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CN113036616A - Intelligent low-voltage switch cabinet based on cloud platform and control method thereof - Google Patents

Intelligent low-voltage switch cabinet based on cloud platform and control method thereof Download PDF

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Publication number
CN113036616A
CN113036616A CN202110241847.9A CN202110241847A CN113036616A CN 113036616 A CN113036616 A CN 113036616A CN 202110241847 A CN202110241847 A CN 202110241847A CN 113036616 A CN113036616 A CN 113036616A
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CN
China
Prior art keywords
circuit breaker
drawout
cabinet
intelligent circuit
intelligent
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Pending
Application number
CN202110241847.9A
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Chinese (zh)
Inventor
韩雪
张立炎
韩卫俭
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Runeng Shandong Electric Power Technology Co ltd
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Runeng Shandong Electric Power Technology Co ltd
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Priority to CN202110241847.9A priority Critical patent/CN113036616A/en
Publication of CN113036616A publication Critical patent/CN113036616A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00—Switchgear having carriage withdrawable for isolation
    • H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
    • H02B11/173—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal drawer type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Distribution Board (AREA)

Abstract

本发明提供了一种基于云平台的智能低压开关柜及其控制方法，包括柜体、若干进线母排、若干配电母排、若干抽出式智能断路器、传感检测单元、柜体控制器和云端服务器；柜体内部设置有第一隔板，第一隔板水平设置并将所述柜体内部分隔为第一腔体和第二腔体；柜体的侧表面上开设有第一窗口，第一窗口与第二腔体内部连通；第二腔体内沿竖直方向依次设置有若干断路器放置位；若干进线母排和若干配电母排固定设置在柜体远离第一窗口方向的第二腔体内；若干抽出式智能断路器与柜体的第二腔体内的各断路器放置位一一对应设置，且与各进线母排和各配电母排一一对应电性连接；抽出式智能断路器与柜体可拆卸式连接。

Figure 202110241847

The invention provides an intelligent low-voltage switch cabinet based on a cloud platform and a control method thereof, including a cabinet body, a plurality of incoming line busbars, a plurality of power distribution busbars, a plurality of withdrawable intelligent circuit breakers, a sensing detection unit, and a cabinet body control A first partition is arranged inside the cabinet, and the first partition is horizontally arranged and divides the inside of the cabinet into a first cavity and a second cavity; the side surface of the cabinet is provided with a first partition window, the first window is communicated with the inside of the second cavity; the second cavity is provided with a number of circuit breaker placement positions in the vertical direction; a number of incoming busbars and a number of distribution busbars are fixedly arranged in the cabinet away from the first window In the second cavity in the direction of Connection; withdrawable intelligent circuit breaker is detachably connected to the cabinet.

Figure 202110241847

Description

Intelligent low-voltage switch cabinet based on cloud platform and control method thereof
Technical Field
The invention relates to the technical field of low-voltage power distribution equipment, in particular to an intelligent low-voltage switch cabinet based on a cloud platform and a control method thereof.
Background
In recent years, as power distribution equipment approaches to intellectualization, informatization and miniaturization, a low-voltage switch cabinet also becomes the key point of quality improvement, efficiency improvement, conversion and upgrading. The low-voltage switch cabinet is an important link of power transmission and distribution and electric energy conversion, is widely applied to industries such as power plants, civil buildings, power distribution rooms and the like, the problems that the existing drawer type low-voltage switch cabinet is frequently accompanied by mechanical faults of parts and the like are often caused, and the frequent faults increase the operation and maintenance cost. Especially, after the circuit breaker, the transformer, the secondary wiring and the instrument are configured inside the drawer type circuit breaker, the cabinet body is unreasonably distributed, so that a large space is not utilized, and large waste on the space is caused.
In addition, the existing low-voltage switch cabinet circuit breaker is mainly monitored by transmitting the data of the circuit breaker to a control cabinet of a control room through a wired network, and monitoring is carried out afterwards on a background of the control cabinet, and maintenance personnel are usually required to go to the field for maintenance after a fault. With the advent of the big data era, monitoring and control of the state of a low-voltage switch cabinet breaker based on a cloud platform become the focus of general attention. Based on the not enough of existing equipment, will promote the reliability of whole low-voltage cabinet, alleviate a ray of maintainer work load, need realize the improvement of circuit breaker miniaturization and intellectuality.
Disclosure of Invention
In view of the above, the invention provides a cloud platform-based intelligent low-voltage switch cabinet which is compact in internal structure, high in space utilization rate, capable of being maintained remotely, safe and reliable, and a control method thereof.
The technical scheme of the invention is realized as follows:
on one hand, the invention provides an intelligent low-voltage switch cabinet based on a cloud platform, which comprises a cabinet body (1), a plurality of incoming busbar (2), a plurality of distribution busbar (3), a plurality of drawout intelligent circuit breakers (4), a sensing detection unit (5), a cabinet controller (6) and a cloud server (7);
the cabinet body (1) is hollow, a first partition plate (11) is arranged inside one end of the cabinet body in the vertical extending direction, and the first partition plate (11) is horizontally arranged and divides the interior of the cabinet body into a first cavity (100) and a second cavity (200); a first window (12) is formed in the side surface of the cabinet body, and the first window (12) is communicated with the inside of the second cavity (200); a plurality of circuit breaker placing positions (201) are sequentially arranged in the second cavity (200) along the vertical direction;
the incoming line busbar (2) is fixedly arranged in a second cavity (200) of the cabinet body (1) far away from the first window (12), each incoming line busbar (2) extends along the vertical direction, and adjacent incoming line busbars (2) are arranged in parallel and at intervals;
the power distribution bus bars (3) are fixedly arranged in a second cavity (200) of the cabinet body (1) far away from the first window (12), one end of each power distribution bus bar (3) is fixedly connected with the inner surface grid of the cabinet body, and the other end of each power distribution bus bar (3) horizontally extends towards the direction of the first window (12); on one hand, each power distribution busbar (3) and each wire inlet busbar (2) are arranged in a staggered mode and are arranged at intervals along the horizontal direction; on the other hand, the power distribution busbar (3) is also arranged at intervals along the vertical extension direction of the incoming busbar (2);
the drawout intelligent circuit breakers (4) are arranged in one-to-one correspondence with the circuit breaker placement positions (201) in the second cavity (200), and a wire inlet end and a wire outlet end are further arranged at one end, far away from the first window (12), of the drawout intelligent circuit breaker (4); the wire inlet ends are electrically connected with the wire inlet busbars (2) in a one-to-one correspondence manner, and the wire outlet ends are electrically connected with the power distribution busbars (3) in a one-to-one correspondence manner; the drawout intelligent circuit breaker (4) is detachably connected with the cabinet body (1);
the sensing detection unit (5) is arranged in the second cavity (200), and the sensing detection unit (5) respectively detects the opening current, the closing current or the coil current of each drawout intelligent circuit breaker (4) and outputs corresponding detection signals to the cabinet controller (6);
the cabinet controller (6) is arranged in the first cavity (100), the cabinet controller (6) acquires a detection signal sent by the sensing detection unit (5) to obtain corresponding detection data, and the cabinet controller (6) is further in communication connection with a cloud server (7) remotely arranged on the drawout intelligent circuit breaker (4); the cabinet controller (6) sends the detection data to a cloud server (7);
the maintenance personnel log in the cloud server (7), and send corresponding opening or closing instructions to the cabinet controller (6) through the cloud server (7) after identity verification.
On the basis of the above technical scheme, preferably, be provided with a plurality of second baffles (13) in second cavity (200) of the cabinet body (1), second baffle (13) set up in pairs at cabinet body second cavity (200) internal surface, the one end of each second baffle (13) and cabinet body (1) internal surface fixed connection of nearly first window (12) department, the other end horizontally of second baffle (13) extends towards the middle part position of the cabinet body (1), each second baffle (13) still separates into a plurality of circuit breaker places position (201) along the vertical extending direction layering interval setting of the cabinet body (1) and with the part that second cavity (200) is close to first window (12).
Preferably, a plurality of cross beams (14) and a plurality of wire outgoing terminals (15) are further arranged in the cabinet body (1), the cross beams (14) are fixedly arranged at one end, far away from the first window (12), in a second cavity (200) in the cabinet body (1), and two ends of each cross beam (14) are respectively abutted against the inner surface of the cabinet body, which is arranged oppositely; each cross beam (14) is arranged at intervals along the vertical extension direction of the incoming busbar (2); each beam (14) is also fixedly connected with a power distribution busbar (3) corresponding to the circuit breaker placement position (201) where the beam is located; each outlet terminal (15) penetrates through the cross beam (14) and is electrically connected with the distribution busbar (3) correspondingly connected with the horizontal extending direction of the cross beam (14) one by one, and the other end of each outlet terminal (15) extends towards the inside of the cabinet body (1) in the direction far away from the first window (12).
Further preferably, the sensing detection unit (5) is arranged inside the drawout intelligent circuit breaker (4) and close to the incoming line end or the outgoing line end, and the sensing detection unit (5) comprises a hall element U1, an operational amplifier unit U2, a first processor U3, a switching-on/off unit and a first wireless transmission unit U4; the output end of the hall element U1 is electrically connected with the non-inverting input end and the inverting input end of the operational amplifier unit U1, and the output end of the operational amplifier unit U2 is electrically connected with the ADC port of the first processor U3; the first processor U3 is also electrically connected with the switching-on/off unit and the first wireless transmission unit U4 respectively; the first wireless transmission unit is also in signal connection with a cabinet controller (6); and the switching-on and switching-off unit selectively acts to switch off or switch on the drawout intelligent circuit breaker (4).
Further preferably, a touch screen unit is further arranged at one end, close to the first window (12), of the drawout intelligent circuit breaker (4), and is electrically connected with a serial port of the first processor U3; and the cabinet controller (6) obtains corresponding detection data according to the detection signal sent by the sensing detection unit (5), and sends the detection data to the touch screen unit for output and display by the first processor U3.
Still further preferably, the cabinet controller (6) includes a second processor U5, a second wireless transmission unit U6, a third wireless transmission unit U7 and a fourth wireless transmission unit U8, and the second processor U5 is electrically connected to the second wireless transmission unit U6, the third wireless transmission unit U7 and the fourth wireless transmission unit U8, respectively; the second wireless transmission unit U6 is in signal connection with the first wireless transmission unit U4; the third wireless transmission unit U7 or the fourth wireless transmission unit U8 is selected to be in communication connection with the cloud server (7).
On the other hand, the invention also provides a control method of the intelligent low-voltage switch cabinet based on the cloud platform, which comprises the following steps:
s1: configuring an intelligent low-voltage switch cabinet and a cloud server (7) based on a cloud platform according to the structure;
s2: establishing a verification code confirmation link of switching-off operation and switching-on operation of the drawout intelligent circuit breaker (4) based on password verification in a cabinet controller (6);
s3: the method comprises the steps that a sensing detection unit (5) periodically detects each drawout intelligent circuit breaker (4) in a cabinet body, obtains operation parameters of each drawout intelligent circuit breaker (4), and periodically uploads the operation parameters to a cabinet controller (6) and a cloud server (7);
s4: the cabinet controller (6) selects insulation resistance, switching-off current, switching-on current, switching-off time, switching-on time, coil current peak value and coil current average change rate in the obtained operation parameters of the drawout intelligent circuit breaker (4) as characteristic values, and establishes a characteristic set of the operation state of the drawout intelligent circuit breaker (4);
s5: establishing a fault diagnosis model of the drawout intelligent circuit breaker (4) based on the characteristic set of the running state of the drawout intelligent circuit breaker (4); selecting different characteristic values from the characteristic set as a training set and a test set respectively; establishing a diagnosis model and training;
s6: setting a first threshold value and a second threshold value based on the output result of the diagnostic model, wherein the second threshold value is larger than the first threshold value; when the output result corresponding to the diagnosis model does not exceed a first threshold value, the operation state of the drawout intelligent circuit breaker (4) is normal; when the first threshold value is smaller than the output result corresponding to the diagnosis model, which is smaller than the second threshold value, the operation state of the drawout intelligent circuit breaker (4) is in a deterioration trend, and the cabinet controller (6) sends prompt signals to the drawout intelligent circuit breaker (4) and the cloud server (7) respectively; and the output result corresponding to the diagnosis model exceeds a second threshold value, which indicates that the corresponding drawout intelligent circuit breaker (4) cannot be used continuously and needs to be replaced, and the cabinet controller (6) respectively sends out warning signals to the drawout intelligent circuit breaker (4) and the cloud server (7).
Further preferably, the establishment of the verification code confirmation link of the switching-off operation and the switching-on operation of the drawout intelligent circuit breaker (4) based on password verification is to establish three times of verification, wherein the first verification is that maintenance personnel logs in a cloud server (7) through a pre-registered account number, and then the second verification is performed: the cabinet controller (6) sends a random dynamic password to the cloud server (7), maintenance personnel input the random dynamic password, an input error returns to log in the interface of the cloud server (7), and the random dynamic password is successfully verified and then enters into third verification: inputting a reserved password of the drawout intelligent circuit breaker (4) in a cloud server (7), and after a maintainer inputs the reserved password, locally verifying the reserved password in a cabinet controller (6); and after all the three times of verification, the maintenance personnel can further input an opening or closing instruction of the drawout intelligent circuit breaker (4) in the cloud server (7).
Further preferably, the characteristic set for establishing the operation state of the drawout intelligent circuit breaker (4) is the insulation resistance a of the characteristic value1A switching-off current a2Closing current a3Time of opening the gate a4Closing time a5Coil current peak value a6And a coilAverage rate of change of current a7As set of features a, a ═ a1,a2,a3,a4,a5,a6,a7) (ii) a The sensing detection unit (5) periodically detects each drawout intelligent circuit breaker (4) in the cabinet body and obtains each corresponding characteristic once to form a sample with a characteristic set A; the sample is normalized:
Figure BDA0002962504680000051
wherein a isikThe kth data of the ith feature; a isikmaxAnd aikminAre respectively aikMaximum and minimum values of; obtaining a feature vector set after normalization processing
Figure BDA0002962504680000052
Calculating matrix B ═ A*TA*Obtaining a corresponding characteristic value; from feature vector set A*Obtaining a training set and a test set, wherein the neuron number of an input layer is 7, the neuron number of an output layer is 10, an adjusting constant is 5, and the neuron number of a hidden layer is 10; sampling a training function trailing of a neural network algorithm, wherein the maximum failure frequency is 5, the minimum gradient requirement is 0.01, the initial value of an algorithm parameter Mu is 0.001, and the maximum value of the algorithm parameter Mu is 100; and obtaining an output result.
Further preferably, the first threshold value is the maximum value of a factory inspection report test value of the drawout intelligent circuit breaker (4); the second threshold value is 1.3 times of the maximum value of the factory inspection report test value of the drawout intelligent circuit breaker (4).
Compared with the prior art, the intelligent low-voltage switch cabinet based on the cloud platform and the control method thereof provided by the invention have the following beneficial effects:
(1) the invention adopts compact layout, the inlet bus bar and the distribution bus bar which are arranged at intervals in a staggered way can save wiring space, the whole volume of the switch cabinet is reduced, and more drawout intelligent circuit breakers are arranged in a smaller space;
(2) the second cavity is divided into a plurality of circuit breaker placing positions by a second partition plate arranged in the second cavity, and one or two drawout intelligent circuit breakers can be placed in each circuit breaker placing position according to the requirement, so that the application range of the cabinet body is widened;
(3) the cabinet body and the cross beam are respectively fixed with the incoming busbar and the distribution busbar, so that the incoming terminal and the outgoing terminal in a plugging state are respectively and correspondingly connected with the incoming busbar and the distribution busbar, and the isolation of the incoming busbar and the distribution busbar is realized;
(4) on one hand, the sensing detection unit can acquire corresponding performance parameters of the drawout intelligent circuit breaker during opening, closing or operation, and output and display the performance parameters through the touch screen unit, and also can receive instructions of the cabinet controller and execute opening or closing actions;
(5) the cabinet controller receives the detection signal of the sensing detection unit on one hand, and can also communicate with a remote cloud server and store the detection data in a cloud terminal;
(6) the cloud server is responsible for carrying out three different identity verifications on the drawout intelligent circuit breaker corresponding to the remote login of the maintenance personnel, so that the system safety is ensured, and the invasion risk is reduced;
(7) the cabinet controller samples a neural network algorithm, a training set and a test set are constructed for detection data acquired by the sensing detection unit, the running state of the drawout intelligent circuit breaker is judged by setting two threshold values, corresponding prompts or alarm information is sent, and the working intensity of maintenance personnel is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a front view of a combination state of a cabinet body and a drawout intelligent circuit breaker of an intelligent low-voltage switch cabinet based on a cloud platform and a control method thereof;
fig. 2 is a perspective view of a combination state of a cabinet body with a part of side surfaces removed and a drawout intelligent circuit breaker of the cloud platform-based intelligent low-voltage switchgear and the control method thereof;
fig. 3 is a rear view of a drawout intelligent circuit breaker of the cloud platform-based intelligent low-voltage switch cabinet and the control method thereof;
fig. 4 is a rear view of a combination state of a certain circuit breaker placement position and drawout type intelligent circuit breaker in fig. 2;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
FIG. 6 is a sectional view taken along line B-B of FIG. 4;
fig. 7 is a wiring diagram of a sensing detection unit of the intelligent low-voltage switch cabinet based on the cloud platform and the control method thereof;
fig. 8 is a wiring diagram of a cabinet controller of the intelligent low-voltage switch cabinet based on the cloud platform and the control method thereof;
fig. 9 is a flow chart of a verification code confirmation link of the opening operation and the closing operation of the drawout intelligent circuit breaker based on password verification according to the cloud platform-based intelligent low-voltage switch cabinet and the control method thereof;
fig. 10 is a flow chart of fault diagnosis of a drawout intelligent circuit breaker of the cloud platform-based intelligent low-voltage switch cabinet and the control method thereof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1 to 8, the technical solution of the present invention is realized as follows:
on one hand, the invention provides an intelligent low-voltage switch cabinet based on a cloud platform, which comprises a cabinet body 1, a plurality of incoming busbar 2, a plurality of distribution busbar 3, a plurality of drawout intelligent circuit breakers 4, a sensing detection unit 5, a cabinet controller 6 and a cloud server 7;
the cabinet body 1 is hollow, a first partition plate 11 is arranged inside one end of the cabinet body in the vertical extending direction, and the first partition plate 11 is horizontally arranged and divides the interior of the cabinet body into a first cavity 100 and a second cavity 200; a first window 12 is arranged on the side surface of the cabinet body, and the first window 12 is communicated with the inside of the second cavity 200; a plurality of circuit breaker placing positions 201 are sequentially arranged in the second cavity 200 along the vertical direction; the cabinet 1 is a light-emitting frame base for forming a device placement space other than the cloud server 7.
The plurality of incoming busbar 2 are fixedly arranged in a second cavity 200 of the cabinet body 1 far away from the first window 12, each incoming busbar 2 extends along the vertical direction, and adjacent incoming busbars 2 are arranged in parallel and at intervals; the incoming busbar 2 can adopt a three-wire or four-wire structure of a copper bar. The incoming line busbar 2 is connected with external electric energy input equipment.
The power distribution busbars 3 are fixedly arranged in a second cavity 200 of the cabinet body 1 far away from the first window 12, one end of each power distribution busbar 3 is fixedly connected with a grid in the cabinet body, and the other end of each power distribution busbar 3 horizontally extends towards the direction of the first window 12; on one hand, each power distribution busbar 3 is arranged with each incoming busbar 2 in a staggered manner along the horizontal direction and is arranged at intervals; on the other hand, the power distribution busbar 3 is also arranged at intervals along the vertical extension direction of the incoming busbar 2; the power distribution busbar 3 can be arranged in a three-wire system or a four-wire system relative to the power inlet busbar 2, and the power distribution busbar 3 is connected with external electric equipment.
The drawout intelligent circuit breakers 4 are arranged in one-to-one correspondence to the circuit breaker placement positions 201 in the second cavity 200, and a wire inlet end and a wire outlet end are further arranged at one end, away from the first window 12, of each drawout intelligent circuit breaker 4; the wire inlet ends are electrically connected with the wire inlet busbars 2 in a one-to-one correspondence manner, and the wire outlet ends are electrically connected with the power distribution busbars 3 in a one-to-one correspondence manner; the inlet wire end and the outlet wire end are both provided with a clamping groove, and the clamping grooves are clamped on the inlet wire busbar 2 or the distribution busbar 3. The drawout intelligent circuit breaker 4 is detachably connected with the cabinet body 1; in order to ensure the safety of electricity and prevent the draw-out type intelligent circuit breaker 4 from misoperation, a mechanism for locking the current position of the draw-out type intelligent circuit breaker 4, such as a lock, is usually arranged between the draw-out type intelligent circuit breaker 4 and the cabinet body 1.
The sensing detection unit 5 is arranged in the second cavity 200, and the sensing detection unit 5 respectively detects the opening current, the closing current or the coil current of each drawout intelligent circuit breaker 4 and outputs corresponding detection signals to the cabinet controller 6; the sensing detection unit 5 can also drive the drawout intelligent circuit breaker 4 to realize the switching-off or switching-on action.
The cabinet controller 6 is arranged in the first cavity 100, the cabinet controller 6 acquires a detection signal sent by the sensing detection unit 5 to obtain corresponding detection data, and the cabinet controller 6 is further in communication connection with a cloud server 7 remotely arranged on the drawout intelligent circuit breaker 4; the cabinet controller 6 sends the detection data to the cloud server 7;
when the intelligent switching-off or switching-on system is used, a maintainer can remotely log in the cloud server 7, sends a corresponding switching-off or switching-on instruction to the cabinet controller 6 through the cloud server 7 after identity verification, and appoints a switching-off or switching-on action through the sensing detection unit 5 to realize remote operation or maintenance.
In order to better utilize the limited space in the cabinet body 1, a plurality of second partition plates 13 are arranged in the second cavity 200 of the cabinet body 1, the second partition plates 13 are arranged on the inner surface of the second cavity 200 of the cabinet body in pairs, one end of each second partition plate 13 is fixedly connected with the inner surface of the cabinet body 1 near the first window 12, the other end of each second partition plate 13 horizontally extends towards the middle position of the cabinet body 1, and each second partition plate 13 is also arranged at intervals in a layering manner along the vertical extending direction of the cabinet body 1 and divides the part of the second cavity 200 near the first window 12 into a plurality of circuit breaker placing positions 201.
According to the specification of the cabinet 1, such as a common cabinet with height 2200, width 500 and depth 800-1000 mm, the second cavity 200 can be divided into 9-10 breaker placing positions 201 by the second partition 13. The second partition plate 13 divides the cabinet body 1 into a plurality of adjacent circuit breaker placing positions 201, and the number of the drawout intelligent circuit breakers 4 at the position can be changed according to requirements. For example, when the load current is less than 400A, two draw-out intelligent circuit breakers of 100-400A may be placed at the circuit breaker placing position 201; if the load current is larger than 400A and smaller than 800A, a drawout intelligent circuit breaker of 400-800A is placed at the circuit breaker placing position 201.
In order to limit the distance between each incoming busbar 2 and each distribution busbar 3, a plurality of cross beams 14 and a plurality of outgoing line terminals 15 are further arranged in the cabinet body 1, the cross beams 14 are fixedly arranged at one end, far away from the first window 12, in the second cavity 200 in the cabinet body 1, and two ends of each cross beam 14 are respectively abutted against the inner surface of the cabinet body, which is arranged oppositely; each cross beam 14 is arranged at intervals along the vertical extending direction of the incoming busbar 2; each beam 14 is also fixedly connected with a power distribution busbar 3 corresponding to the circuit breaker placing position 201; each outlet terminal 15 penetrates through the cross beam 14 and is electrically connected with the distribution busbar 3 correspondingly connected with the horizontal extending direction of the cross beam 14 one by one, and the other end of each outlet terminal 15 extends towards the inside of the cabinet body 1 in the direction far away from the first window 12. The cross beam 14 fixes the power distribution busbar 3 and the wire outlet terminal 15 at the same time, so that better wiring of external electric equipment is facilitated, and the phenomenon that the power distribution busbar 3 is interfered by the wire inlet busbar 2 to cause short circuit is also prevented.
The sensing detection unit 5 is arranged in the drawout intelligent circuit breaker 4 and close to the incoming line end or the outgoing line end, and the sensing detection unit 5 comprises a Hall element U1, an operational amplifier unit U2, a first processor U3, a switching-on/off unit and a first wireless transmission unit U4; the output end of the hall element U1 is electrically connected with the non-inverting input end and the inverting input end of the operational amplifier unit U1, and the output end of the operational amplifier unit U2 is electrically connected with the ADC port of the first processor U3; the first processor U3 is also electrically connected with the switching-on/off unit and the first wireless transmission unit U4 respectively; the first wireless transmission unit is also in signal connection with the cabinet controller 6; and the switching-on and switching-off unit selectively acts to switch off or switch on the drawout intelligent circuit breaker 4. Fig. 7 shows a wiring diagram of a sensing detection unit, which is specifically detected by the hall element U1, and then an output signal of the hall element U1 is amplified by the operational amplifier unit U2 and inputted into an ADC port of the first processor U3. A touch screen unit is arranged at one end of the drawout intelligent circuit breaker 4 close to the first window 12 and is electrically connected with a serial port of the first processor U3; and the cabinet controller 6 obtains corresponding detection data according to the detection signal sent by the sensing detection unit 5, and sends the detection data to the touch screen unit for output and display by the first processor U3. In the figure, a first processor U3 communicates with the cabinet controller 6 via a first wireless transmission unit U4. Chip U10 is a touch screen controller. JD1 is a relay, and the output signal of the first processor U3 causes the relay coil to be attracted, so that the switching-off or switching-on action of the drawout intelligent circuit breaker 4 is realized.
Fig. 8 shows a connection diagram of signal connection between the cabinet controller 6 and the cloud server 7, where the cabinet controller 6 includes a second processor U5, a second wireless transmission unit U6, a third wireless transmission unit U7, and a fourth wireless transmission unit U8, and the second processor U5 is electrically connected to the second wireless transmission unit U6, the third wireless transmission unit U7, and the fourth wireless transmission unit U8, respectively; the second wireless transmission unit U6 is in signal connection with the first wireless transmission unit U4; the third wireless transmission unit U7 or the fourth wireless transmission unit U8 is connected with the cloud server 7 in a communication mode. The second wireless transmission unit U6 is matched with the first wireless transmission unit U4, and the WiFi module E103 of the electronic technology limited company with the degree of hundred million is adopted, so that the preset WIFI signals in the machine room can be utilized for communication. The third wireless transmission unit U7 is paired and configured between the second processor U5 and the cloud server 7, and implements LoRa wireless communication. The fourth wireless transmission unit U8 is also provided in pairs at the second processor U5 and the cloud server 7, and performs long-distance communication through a 4G or similar carrier network.
In addition, the invention also provides a control method of the intelligent low-voltage switch cabinet based on the cloud platform, which comprises the following steps:
s1: configuring an intelligent low-voltage switch cabinet and a cloud server 7 based on a cloud platform according to the structure;
s2: establishing a verification code confirmation link of switching-off operation and switching-on operation of the drawout intelligent circuit breaker 4 based on password verification in the cabinet controller 6;
s3: the sensing detection unit 5 periodically detects each drawout intelligent circuit breaker 4 in the cabinet body, acquires the operating parameters of each drawout intelligent circuit breaker 4 and periodically uploads the operating parameters to the cabinet controller 6 and the cloud server 7;
s4: the cabinet controller 6 selects the insulation resistance, the opening current, the closing current, the opening time, the closing time, the coil current peak value and the coil current average change rate in the obtained operation parameters of the drawout intelligent circuit breaker 4 as characteristic values, and establishes a characteristic set of the operation state of the drawout intelligent circuit breaker 4;
s5: establishing a fault diagnosis model of the drawout intelligent circuit breaker 4 based on the characteristic set of the running state of the drawout intelligent circuit breaker 4; selecting different characteristic values from the characteristic set as a training set and a test set respectively; establishing a diagnosis model and training;
s6: setting a first threshold value and a second threshold value based on the output result of the diagnostic model, wherein the second threshold value is larger than the first threshold value; when the output result corresponding to the diagnosis model does not exceed the first threshold value, the operation state of the drawout intelligent circuit breaker 4 is normal; when the first threshold value < the output result corresponding to the diagnosis model < the second threshold value, the operation state of the drawout intelligent circuit breaker 4 is indicated to have a deterioration trend, and the cabinet controller 6 respectively sends prompt signals to the drawout intelligent circuit breaker 4 and the cloud server 7; and when the output result corresponding to the diagnosis model exceeds a second threshold value, which indicates that the corresponding drawout intelligent circuit breaker 4 cannot be used continuously and needs to be replaced, the cabinet controller 6 respectively sends out warning signals to the drawout intelligent circuit breaker 4 and the cloud server 7.
As shown in fig. 9, in the step S2, the establishment of the verification code confirmation link of the opening operation and the closing operation of the drawout intelligent circuit breaker 4 based on password verification is to establish three times of verification, where the first verification is that a maintenance worker logs in the cloud server 7 through a pre-registered account, and then enters the second verification: the cabinet controller 6 sends a random dynamic password to the cloud server 7, maintenance personnel input the random dynamic password, an input error returns to log in the interface of the cloud server 7, and the random dynamic password is successfully verified to enter a third verification: inputting a reserved password of the drawout intelligent circuit breaker 4 in the cloud server 7, and after a maintainer inputs the reserved password, locally verifying the reserved password in the cabinet controller 6; and after all the three times of verification, the maintenance personnel can further input an opening or closing instruction of the drawout intelligent circuit breaker 4 into the cloud server 7. And if the password of any verification link is continuously mistaken for three times, remote switching-off or switching-on operation is forbidden.
In the step S3, the characteristic set of the operation state of the draw-out type intelligent circuit breaker 4 is established by using the insulation resistance a of the characteristic value1A switching-off current a2Closing current a3Time of opening the gate a4Closing time a5Coil current peak value a6And the average rate of change a of the coil current7As set of features a, a ═ a1,a2,a3,a4,a5,a6,a7) (ii) a The sensing detection unit 5 periodically detects each drawout intelligent circuit breaker 4 in the cabinet body and obtains each corresponding characteristic once to form a sample with a characteristic set A; the sample is normalized:
Figure BDA0002962504680000121
wherein a isikThe kth data of the ith feature; a isikmaxAnd aikminAre respectively aikMaximum and minimum values of; obtaining a feature vector set after normalization processing
Figure BDA0002962504680000122
Calculating matrix B ═ A*TA*Obtaining a corresponding characteristic value; from feature vector set A*Obtaining a training set and a test set, wherein the neuron number of an input layer is 7, the neuron number of an output layer is 10, an adjusting constant is 5, and the neuron number of a hidden layer is 10; sampling a training function trailing of a neural network algorithm, wherein the maximum failure frequency is 5, the minimum gradient requirement is 0.01, the initial value of an algorithm parameter Mu is 0.001, and the maximum value of the algorithm parameter Mu is 100; and obtaining an output result.
In the step S4, the first threshold value is the maximum value of the factory inspection report test value of the drawout intelligent circuit breaker 4; the second threshold value is 1.3 times of the maximum value of the factory inspection report test value of the drawout intelligent circuit breaker 4.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides an intelligence low-voltage switchgear based on cloud platform which characterized in that: the intelligent power distribution cabinet comprises a cabinet body (1), a plurality of incoming busbar (2), a plurality of distribution busbar (3), a plurality of extraction type intelligent circuit breakers (4), a sensing detection unit (5), a cabinet controller (6) and a cloud server (7);
the cabinet body (1) is hollow, a first partition plate (11) is arranged inside one end of the cabinet body in the vertical extending direction, and the first partition plate (11) is horizontally arranged and divides the interior of the cabinet body into a first cavity (100) and a second cavity (200); a first window (12) is formed in the side surface of the cabinet body, and the first window (12) is communicated with the inside of the second cavity (200); a plurality of circuit breaker placing positions (201) are sequentially arranged in the second cavity (200) along the vertical direction;
the incoming line busbar (2) is fixedly arranged in a second cavity (200) of the cabinet body (1) far away from the first window (12), each incoming line busbar (2) extends along the vertical direction, and adjacent incoming line busbars (2) are arranged in parallel and at intervals;
the power distribution bus bars (3) are fixedly arranged in a second cavity (200) of the cabinet body (1) far away from the first window (12), one end of each power distribution bus bar (3) is fixedly connected with the inner surface grid of the cabinet body, and the other end of each power distribution bus bar (3) horizontally extends towards the direction of the first window (12); on one hand, each power distribution busbar (3) and each wire inlet busbar (2) are arranged in a staggered mode and are arranged at intervals along the horizontal direction; on the other hand, the power distribution busbar (3) is also arranged at intervals along the vertical extension direction of the incoming busbar (2);
the drawout intelligent circuit breakers (4) are arranged in one-to-one correspondence with the circuit breaker placement positions (201) in the second cavity (200), and a wire inlet end and a wire outlet end are further arranged at one end, far away from the first window (12), of the drawout intelligent circuit breaker (4); the wire inlet ends are electrically connected with the wire inlet busbars (2) in a one-to-one correspondence manner, and the wire outlet ends are electrically connected with the power distribution busbars (3) in a one-to-one correspondence manner; the drawout intelligent circuit breaker (4) is detachably connected with the cabinet body (1);
the sensing detection unit (5) is arranged in the second cavity (200), and the sensing detection unit (5) respectively detects the opening current, the closing current or the coil current of each drawout intelligent circuit breaker (4) and outputs corresponding detection signals to the cabinet controller (6);
the cabinet controller (6) is arranged in the first cavity (100), the cabinet controller (6) acquires a detection signal sent by the sensing detection unit (5) to obtain corresponding detection data, and the cabinet controller (6) is further in communication connection with a cloud server (7) remotely arranged on the drawout intelligent circuit breaker (4); the cabinet controller (6) sends the detection data to a cloud server (7);
the maintenance personnel log in the cloud server (7), and send corresponding opening or closing instructions to the cabinet controller (6) through the cloud server (7) after identity verification.
2. The intelligent low-voltage switchgear based on the cloud platform according to claim 1, wherein: be provided with a plurality of second baffles (13) in second cavity (200) of the cabinet body (1), second baffle (13) set up in cabinet body second cavity (200) internal surface in pairs, the one end of each second baffle (13) and the cabinet body (1) internal surface fixed connection of nearly first window (12) department, the other end horizontally of second baffle (13) extends towards the middle part position of the cabinet body (1), each second baffle (13) still sets up and separates into a plurality of circuit breakers along the vertical extending direction layering interval of the cabinet body (1) and puts position (201) with the part that second cavity (200) are close to first window (12).
3. The intelligent low-voltage switchgear based on the cloud platform according to claim 2, wherein: the cabinet body (1) is also internally provided with a plurality of cross beams (14) and a plurality of wire outlet terminals (15), the cross beams (14) are fixedly arranged at one end, far away from the first window (12), in the second cavity (200) in the cabinet body (1), and two ends of each cross beam (14) are respectively abutted against the inner surface of the cabinet body, which is oppositely arranged; each cross beam (14) is arranged at intervals along the vertical extension direction of the incoming busbar (2); each beam (14) is also fixedly connected with a power distribution busbar (3) corresponding to the circuit breaker placement position (201) where the beam is located; each outlet terminal (15) penetrates through the cross beam (14) and is electrically connected with the distribution busbar (3) correspondingly connected with the horizontal extending direction of the cross beam (14) one by one, and the other end of each outlet terminal (15) extends towards the inside of the cabinet body (1) in the direction far away from the first window (12).
4. The intelligent low-voltage switchgear based on the cloud platform according to claim 2, wherein: the sensing detection unit (5) is arranged in the drawout intelligent circuit breaker (4) and close to the wire inlet end or the wire outlet end, and the sensing detection unit (5) comprises a Hall element U1, an operational amplifier unit U2, a first processor U3, a switching-on/off unit and a first wireless transmission unit U4; the output end of the hall element U1 is electrically connected with the non-inverting input end and the inverting input end of the operational amplifier unit U1, and the output end of the operational amplifier unit U2 is electrically connected with the ADC port of the first processor U3; the first processor U3 is also electrically connected with the switching-on/off unit and the first wireless transmission unit U4 respectively; the first wireless transmission unit is also in signal connection with a cabinet controller (6); and the switching-on and switching-off unit selectively acts to switch off or switch on the drawout intelligent circuit breaker (4).
5. The intelligent low-voltage switchgear based on the cloud platform according to claim 4, wherein: a touch screen unit is further arranged at one end, close to the first window (12), of the drawout intelligent circuit breaker (4), and is electrically connected with a serial port of the first processor U3; and the cabinet controller (6) obtains corresponding detection data according to the detection signal sent by the sensing detection unit (5), and sends the detection data to the touch screen unit for output and display by the first processor U3.
6. The intelligent low-voltage switchgear based on the cloud platform of claim 5, wherein: the cabinet controller (6) comprises a second processor U5, a second wireless transmission unit U6, a third wireless transmission unit U7 and a fourth wireless transmission unit U8, wherein the second processor U5 is electrically connected with the second wireless transmission unit U6, the third wireless transmission unit U7 and the fourth wireless transmission unit U8 respectively; the second wireless transmission unit U6 is in signal connection with the first wireless transmission unit U4; the third wireless transmission unit U7 or the fourth wireless transmission unit U8 is selected to be in communication connection with the cloud server (7).
7. A control method of an intelligent low-voltage switch cabinet based on a cloud platform is characterized by comprising the following steps: the method comprises the following steps:
s1: the configuration of a cloud platform based intelligent low voltage switchgear cabinet and cloud server (7) according to any of the claims 1-6;
s2: establishing a verification code confirmation link of switching-off operation and switching-on operation of the drawout intelligent circuit breaker (4) based on password verification in a cabinet controller (6);
s3: the method comprises the steps that a sensing detection unit (5) periodically detects each drawout intelligent circuit breaker (4) in a cabinet body, obtains operation parameters of each drawout intelligent circuit breaker (4), and periodically uploads the operation parameters to a cabinet controller (6) and a cloud server (7);
s4: the cabinet controller (6) selects insulation resistance, switching-off current, switching-on current, switching-off time, switching-on time, coil current peak value and coil current average change rate in the obtained operation parameters of the drawout intelligent circuit breaker (4) as characteristic values, and establishes a characteristic set of the operation state of the drawout intelligent circuit breaker (4);
s5: establishing a fault diagnosis model of the drawout intelligent circuit breaker (4) based on the characteristic set of the running state of the drawout intelligent circuit breaker (4); selecting different characteristic values from the characteristic set as a training set and a test set respectively; establishing a diagnosis model and training;
s6: setting a first threshold value and a second threshold value based on the output result of the diagnostic model, wherein the second threshold value is larger than the first threshold value; when the output result corresponding to the diagnosis model does not exceed a first threshold value, the operation state of the drawout intelligent circuit breaker (4) is normal; when the first threshold value is smaller than the output result corresponding to the diagnosis model, which is smaller than the second threshold value, the operation state of the drawout intelligent circuit breaker (4) is in a deterioration trend, and the cabinet controller (6) sends prompt signals to the drawout intelligent circuit breaker (4) and the cloud server (7) respectively; and the output result corresponding to the diagnosis model exceeds a second threshold value, which indicates that the corresponding drawout intelligent circuit breaker (4) cannot be used continuously and needs to be replaced, and the cabinet controller (6) respectively sends out warning signals to the drawout intelligent circuit breaker (4) and the cloud server (7).
8. The control method of the intelligent low-voltage switch cabinet based on the cloud platform according to claim 7, characterized in that: the verification code confirmation link for establishing the switching-off operation and the switching-on operation of the drawout intelligent circuit breaker (4) based on password verification is to establish three times of verification, wherein the first time of verification is that maintenance personnel logs in a cloud server (7) through a pre-registered account number, and then the second time of verification is entered: the cabinet controller (6) sends a random dynamic password to the cloud server (7), maintenance personnel input the random dynamic password, an input error returns to log in the interface of the cloud server (7), and the random dynamic password is successfully verified and then enters into third verification: inputting a reserved password of the drawout intelligent circuit breaker (4) in a cloud server (7), and after a maintainer inputs the reserved password, locally verifying the reserved password in a cabinet controller (6); and after all the three times of verification, the maintenance personnel can further input an opening or closing instruction of the drawout intelligent circuit breaker (4) in the cloud server (7).
9. The control method of the intelligent low-voltage switch cabinet based on the cloud platform according to claim 7, characterized in that: the characteristic set for establishing the running state of the drawout intelligent circuit breaker (4) is the insulation resistance a of the characteristic value1A switching-off current a2Closing current a3Time of opening the gate a4Closing time a5Coil current peak value a6And the average rate of change a of the coil current7As set of features a, a ═ a1,a2,a3,a4,a5,a6,a7) (ii) a The sensing detection unit (5) periodically detects each drawout intelligent circuit breaker (4) in the cabinet body and obtains each corresponding characteristic once to form a sample with a characteristic set A; the sample is normalized:
Figure FDA0002962504670000041
wherein a isikIs the ith characteristicThe kth data of (1); a isikmaxAnd aikminAre respectively aikMaximum and minimum values of; obtaining a feature vector set after normalization processing
Figure FDA0002962504670000042
Calculating matrix B ═ A*TA*Obtaining a corresponding characteristic value; from feature vector set A*Obtaining a training set and a test set, wherein the neuron number of an input layer is 7, the neuron number of an output layer is 10, an adjusting constant is 5, and the neuron number of a hidden layer is 10; sampling a training function trailing of a neural network algorithm, wherein the maximum failure frequency is 5, the minimum gradient requirement is 0.01, the initial value of an algorithm parameter Mu is 0.001, and the maximum value of the algorithm parameter Mu is 100; and obtaining an output result.
10. The control method of the intelligent low-voltage switch cabinet based on the cloud platform according to claim 7, characterized in that: the first threshold value is the maximum value of the factory inspection report test value of the drawout intelligent circuit breaker (4); the second threshold value is 1.3 times of the maximum value of the factory inspection report test value of the drawout intelligent circuit breaker (4).
CN202110241847.9A 2021-03-04 2021-03-04 Intelligent low-voltage switch cabinet based on cloud platform and control method thereof Pending CN113036616A (en)

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