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WO2019177253A1 - Système permettant de gérer un disjoncteur dans un tableau de distribution - Google Patents

Système permettant de gérer un disjoncteur dans un tableau de distribution Download PDF

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Publication number
WO2019177253A1
WO2019177253A1 PCT/KR2019/000492 KR2019000492W WO2019177253A1 WO 2019177253 A1 WO2019177253 A1 WO 2019177253A1 KR 2019000492 W KR2019000492 W KR 2019000492W WO 2019177253 A1 WO2019177253 A1 WO 2019177253A1
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WO
WIPO (PCT)
Prior art keywords
breaker
switch
waveform
control device
switchboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2019/000492
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English (en)
Korean (ko)
Inventor
임창준
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Electric Co Ltd
Original Assignee
LSIS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LSIS Co Ltd filed Critical LSIS Co Ltd
Publication of WO2019177253A1 publication Critical patent/WO2019177253A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/0356—Mounting of monitoring devices, e.g. current transformers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear

Definitions

  • the present invention relates to a circuit breaker management system in the switchboard, and more particularly, to a circuit breaker management system for detecting the possibility of the breaker or the switch operation of the breakers installed in the switchboard panel.
  • a circuit breaker disposed on a power line protects the switchboard, the load connected thereto, and various systems by blocking the line when an element such as an overcurrent, an overvoltage, an undervoltage, a short circuit, or a ground fault is detected on the line.
  • the switchboard panel can be opened and closed. Since the door is normally closed, it is difficult for an administrator or user to grasp the situation inside the switchboard panel without opening the door.
  • the switchboard when the switchboard is driven for a long time, the fastening state of the breaker fastened to a slot or the like in the switchboard panel is weakened and the breaker may be separated from the slot.
  • the line in which the breaker is disposed may cause a disconnection, and the power supplied to the loads connected to the line may be unexpectedly interrupted.
  • a control device such as a gateway or a data logger transmits a control signal for the purpose of operating a switch of a breaker arranged on a specific line.
  • the switch of the breaker does not operate according to the control signal.
  • the problem to be solved by the present invention is to provide a breaker management system in the switchboard that can quickly detect the possibility of the breakers disposed in the switchboard panel, or whether the switch is normally operated.
  • the circuit breaker management system includes a sensor and a control device.
  • the sensor detects vibration generated when the switch included in the breaker operates.
  • the control device then transmits a control signal for controlling the switch to the breaker.
  • the control device detects the possibility of breakage of the breaker or non-operation of the switch based on a sensing waveform which is a waveform of the vibration sensed by the vibration sensing sensor.
  • control device includes a memory in which the reference waveform is stored.
  • control device compares the reference waveform with the sensing waveform to detect the possibility of breaker breakage or non-operation of the switch.
  • the control device determines that the breaker is in a steady state when the difference between the reference waveform and the sense waveform does not exceed the threshold. On the other hand, when the difference between the reference waveform and the sense waveform exceeds the threshold, it is determined that the breaker may be detached or the switch is in an inoperative state.
  • the control device determines that there is a possibility of breakage of the breaker.
  • the control device determines that the switch is in an inoperative state.
  • control device accumulates and stores waveforms generated in the normal operation of the switch in a memory.
  • the reference waveform is updated based on the cumulatively stored waveforms.
  • control device includes a gateway provided in the switchboard panel.
  • the vibration sensor is embedded in the gateway.
  • control device further comprises a data logger connected to the gateway.
  • the data logger receives data on the sense waveform from the gateway, and detects the possibility of breaker breakage or non-operation of the switch based on the received data.
  • control device transmits a detection result to the terminal when it is detected that the breaker may be detached or the switch is in an inoperative state.
  • the breaker management system of the present invention has an effect of detecting in real time the possibility of breakage of the breaker or malfunction of the switch.
  • FIG. 1 is a schematic diagram illustrating a circuit breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • FIG. 2 is a schematic block diagram of a gateway included in a breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating an operation of a circuit breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • FIG. 4 is an exemplary diagram illustrating an operation of a gateway transmitting a control signal for operating a switch of a specific breaker.
  • FIG. 5 is a diagram illustrating an example of a waveform detected by a vibration sensor when a switch of a specific circuit breaker receiving the control signal of FIG. 4 normally operates.
  • FIG. 6 is a diagram illustrating an example of a waveform detected by a vibration sensor when a switch of a specific circuit breaker receiving the control signal of FIG. 4 does not operate normally.
  • FIG. 7 is a diagram illustrating an example of a waveform sensed by a vibration sensing sensor when a specific breaker having a possibility of departure receives a control signal of FIG. 4 to operate a switch.
  • FIG. 8 is a diagram illustrating an example of a notification provided when a possibility of departure of a specific breaker is detected according to the embodiment shown in FIG. 7.
  • FIG. 1 is a schematic diagram illustrating a circuit breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • a breaker management system in a switchboard includes a plurality of breakers 11 and relays 12 provided inside the switchboard panel 10. , A meter 13, a gateway 14, a data logger 20, a server 30, and the like. Since the breaker management system is not composed of only the components shown in FIG. 1, the breaker management system may include more or fewer configurations.
  • a plurality of breakers 11 may be disposed in the switchboard panel 10.
  • the number of breakers disposed inside the switchboard panel 10 may be determined based on the number of lines branching inside the switchboard panel 10.
  • each of the breakers 11 may be fixedly installed in a slot or the like inside the switchboard panel 10.
  • Each of the circuit breakers 11 may protect the switchboard and the load or various systems connected thereto by blocking the line when an element such as an overcurrent, overvoltage, undervoltage, short circuit, or ground fault is detected in the line.
  • the breakers 11 may be disposed to correspond to each of the tracks one by one to perform a blocking operation of the corresponding track.
  • Each of the breakers 11 may be implemented as an air circuit breaker (ACB), a molded case circuit breaker (MCCB), a molded circuit breaker (MCB), or the like. In general, the ACB with the highest allowable current may be placed on the upper line, and the MCB with the lowest allowable current may be placed on the lower line.
  • ACB air circuit breaker
  • MCCB molded case circuit breaker
  • MCB molded circuit breaker
  • the breakers 11 are disposed on each of the branched lines in the switchboard panel 10, and thus the breakers 11 may also have a line relationship according to an ancestry relationship between the lines.
  • Each of the breakers 11 may include a switch (not shown). When each of the breakers 11 is switched off, the arranged line is cut off to stop the power supply, and when the switch is turned on, the power supply may be resumed. For example, each of the breakers 11 may turn the switch on / off based on a control signal received from the gateway 14. According to an embodiment, an administrator or a user may manually operate the switch to turn on / off the switch.
  • the switch may be provided in the form of a physical switch so that the position may change when the switch is turned on or off, and a certain level of vibration may occur.
  • the relay 12 may control to supply or cut off power to a load end such as a motor or an electric motor, and may protect the load end when an accident current such as overcurrent or short circuit current occurs in the current flowing through the load end.
  • the relay 12 may be implemented as an electronic motor protection relay (EMPR), but is not limited thereto.
  • the meter 13 can measure and monitor the amount of power in the power system of the switchboard.
  • the meter 13 may be implemented as a digital integrated meter (GIMAC), but is not limited thereto.
  • GIMAC digital integrated meter
  • the gateway 14 may be provided in the switchboard panel 10. According to an embodiment, the gateway 14 may be disposed outside the switchboard panel 10.
  • the gateway 14 is connected (e.g., RS485, etc.) with the breakers 11, the relay 12, and the meter 13 in the switchboard panel 10 according to a wired or wireless communication scheme, so that the breakers 11, the relay Various information related to the operation state of the switchboard can be received from each of the 12 and the meter 13.
  • the gateway 14 may transmit the received information to the data logger 20 or the server 30.
  • the gateway 14 receives a control command for the components inside the switchboard panel 10 from the data logger 20, the server 30, or the like, and based on the received control command, the components 11, 12, 13) or the configuration 11, 12, 13 may be controlled by generating the control command directly.
  • the gateway 14 may be connected to a human machine interface 40.
  • the HMI 40 may be provided on an outer surface of the switchboard panel 10 or on the outside of the switchboard panel 10.
  • the HMI 40 may receive various information related to an operation state in the switchboard panel 10 from the gateway 14 and display the information in a graphic or text form.
  • the HMI 40 may receive various commands or requests related to the operation of the switchboard from an administrator or a user, and transmit the received commands or requests to the gateway 14.
  • the gateway 14 may process a command or request received from the HMI 40, and output the processing result through the HMI 40.
  • the data logger 20 may be connected to the gateway 14 and the server 30 through a wired or wireless communication scheme.
  • the data logger 20 receives various information related to the operation of the gateway 14 and the lower devices (the breakers 11, the relay 12, the meter 13, etc.), and receives the received information from the server 30. Can be sent to.
  • the data logger 20 may transmit a control command received from the server 30 to the gateway 14.
  • the server 30 may be implemented in the form of a cloud server to integrally manage information in the switchboard panel 10.
  • the gateway 14, the data logger 20, or the server 30 may correspond to a control device of a switchboard control system. Such a control device can control the components 11, 12, 13 in the switchboard panel 10.
  • the gateway 14, the data logger 20, or the server 30 may be connected to the administrator's or user's terminal 60 (for example, a smartphone, a tablet PC, a notebook, a desktop, etc.) through various known communication methods. That is, the control device may transmit various information related to the operation of the switchboard to the terminal 60. In addition, the control device receives a control command for controlling the components 11, 12, 13 in the switchboard panel 10 from the terminal 60, and generates a control signal based on the received control command. , 12, 13).
  • the administrator's or user's terminal 60 for example, a smartphone, a tablet PC, a notebook, a desktop, etc.
  • the control device may transmit various information related to the operation of the switchboard to the terminal 60.
  • the control device receives a control command for controlling the components 11, 12, 13 in the switchboard panel 10 from the terminal 60, and generates a control signal based on the received control command. , 12, 13).
  • the breaker is fixed to a slot or the like in the switchboard panel 10.
  • the breaker may be detached from the slot due to a weakening force as the switchboard is operated for a long time. In this case, damage or disconnection of the line on which the corresponding breaker is disposed may occur, which may cause an unexpected interruption of power supply to loads connected to the line.
  • a control device such as a gateway 14, a data logger 20, a server 30, or the like may output a control signal for switching off the breaker 11 disposed on the specific line.
  • a control device such as a gateway 14, a data logger 20, a server 30, or the like may output a control signal for switching off the breaker 11 disposed on the specific line.
  • the circuit breaker management system may minimize the occurrence of the above-described problems by providing a real time notification to a manager by detecting a breaker state such as a possibility of breakage of the breakers 11 or a switch non-operation. have.
  • FIG. 2 is a schematic block diagram of a gateway included in a breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • the gateway 14 detects the possibility of departure or switch non-operation of each of the breakers 11.
  • the data logger 20 or the server 30 may detect the detachment possibility or the switch non-operation.
  • the gateway 14 may transmit data related to the vibration sensed by the vibration sensor 142 to the data logger 20 or the server 30.
  • the gateway 14 includes a communication unit 141, a memory 143, and a controller 144.
  • the communication unit 141 includes a gateway 14 and breakers 11, a gateway 14 and a relay 12, a gateway 14 and a meter 13, a gateway 14, a data logger 20, and a gateway ( 14 and the HMI 40 and at least one wired / wireless communication module for enabling communication between the gateway 14 and the terminal 60.
  • the memory 143 may store various information related to the operation of the gateway 14, information about the components 11, 12, and 13 included in the switchboard panel 10, and the like.
  • the memory 143 may store information on reference waveforms of vibrations generated when the breaker 11 switches (eg, when the switch is turned off).
  • the memory 143 may store an algorithm related to an operation of the breaker management system, which will be described later with reference to FIG. 3.
  • the controller 144 may control the overall operation of the gateway 14.
  • the controller 144 may perform an operation of the breaker management system to be described later with reference to FIG. 3 based on an algorithm stored in the memory 143.
  • the gateway 14 may include a vibration sensor 142.
  • the vibration sensor 142 may be implemented as a MEMS sensor such as an acceleration sensor.
  • the vibration sensor 142 may be provided in a form embedded in the gateway 14, but according to an embodiment, the vibration sensor 142 may be spaced apart from the gateway 14 and fixed to an inner wall of the switchboard panel 10, and the cable may be connected to the gateway 14. It may also be provided in a form that is connected to.
  • the vibration sensor 142 may detect vibration generated when a state change of the breakers 11 is switched off or on.
  • the controller 144 may detect a state such as whether the switch is in normal operation or a breaker may be detached based on the vibration sensed by the vibration sensor 142.
  • the vibration sensor 142 may detect an earthquake or an external shock at a place where the switchboard panel 10 is installed.
  • FIG. 3 is a flowchart illustrating an operation of a circuit breaker management system in a switchboard according to an exemplary embodiment of the present invention.
  • the breaker management system may control a switch operation of the breaker (S100).
  • the gateway 14 may sequentially turn off the switches of each of the breakers 11 for the switch test of each of the breakers 11 in the initial installation of the switchboard.
  • the gateway 14 may switch off the breaker disposed on the specific line for the blocking operation of the specific line during the operation of the switchboard.
  • the circuit breaker management system may detect vibrations according to the switch operation of the circuit breaker using the vibration sensor 142 (S110).
  • each of the breakers 11 may include a switch implemented in a physical form.
  • the switch may generate a vibration as the position is changed as the state is changed (on-> off or off-> on).
  • the vibration may be transmitted to the vibration detection sensor 142 embedded in the gateway 14 or attached to the switchboard panel 10 through a slot to which the breaker and the breaker are fastened.
  • the circuit breaker management system may compare the waveform of the vibration detected by the vibration sensor 142 with a reference waveform (S120).
  • the waveform of the vibration detected by the vibration sensor 142 is defined as a detection waveform.
  • the management system compares the sense waveform with the reference waveform.
  • the controller 144 of the gateway 14 may compare the reference waveform stored in the memory 143 with the detection waveform detected by the vibration detection sensor 142. For example, the controller 144 may perform various comparisons, such as amplitude comparison at a plurality of specific time points, gain comparison at a plurality of frequencies, phase comparison between a reference waveform and a sense waveform, and comparison using cross-correlation. By using the method, the reference waveform and the sensing waveform can be compared.
  • the breaker management system determines that the breaker is in a normal state (S140).
  • the threshold value may be set based on a comparison method between the sensing waveform and the reference waveform.
  • the steady state may refer to a state in which the fastening of the breaker is good so that there is no possibility of detachment of the breaker from the slot, and a state in which the switch of the breaker operates normally.
  • the breaker management system can detect the possibility of breaker breakage or switch malfunction of the breaker based on the magnitude (amplitude) of the detected waveform.
  • S140-S150 Specifically, when the difference between the sense waveform and the reference waveform exceeds the threshold, it is determined that the breaker may be detached or the switch is in an inoperative state.
  • the controller 144 of the gateway 14 determines the detection waveform. By comparing the magnitude (amplitude) at the time point and the reference magnitude (amplitude), it is possible to detect the possibility of detachment of the breaker or the switch non-operation of the breaker.
  • the specific time point means a predetermined time point.
  • the breaker management system may detect that the breaker switch is in an inoperative state.
  • the breaker management system may detect that there is a possibility of breakage of the breaker.
  • the circuit breaker management system may output the detection result through an output means such as the HMI 40 or transmit the detected result to the terminal 60 of the manager or the user (S160).
  • the detection result may be output through a screen of the HMI 40 or a display of the terminal 60.
  • the administrator or the user may recognize that the switch of the breaker does not operate normally or recognize the possibility of the breaker break-out based on the output or transmitted sensing result, and take appropriate action accordingly.
  • FIG. 4 is an exemplary view illustrating an operation of a gateway transmitting a control signal for operating a switch of a specific circuit breaker
  • FIG. 5 is a vibration sensor when the switch of the specific circuit breaker receiving the control signal of FIG. 4 operates normally. It is a figure which shows the example of the waveform detected by the.
  • the controller 144 of the gateway 14 may provide a control signal CTRL for operating (eg, turning off) the switch of the ninth breaker CB9 among the plurality of breakers CB1 to CB11.
  • the ninth breaker CB9 may be transmitted.
  • information about a reference waveform REF_W may be stored in the memory 143 of the gateway 14 or the memory of the control device.
  • the reference waveform REF_W refers to a waveform generated when the switch operates normally.
  • the reference waveform REF_W may be provided in a form stored in the memory 143 when the system is initially installed.
  • the control device accumulates and stores waveforms generated during normal operation of the switch while the breaker management system is driven, and updates the reference waveform REF_W at a predetermined time point or at a predetermined interval based on the stored waveforms. You may.
  • the ninth circuit breaker CB9 may switch off based on the received control signal CTRL. As the switch is turned off at the first time point T1, vibration may occur. The vibration gradually weakens with time, and after a predetermined time, the vibration may no longer occur. When there is no possibility of the ninth breaker CB9 and the switch operates normally, the waveform detected by the vibration sensor 142 may have a form similar to the reference waveform REF_W of FIG. 5.
  • FIG. 6 is a diagram illustrating an example of a waveform detected by a vibration sensor when a switch of a specific circuit breaker receiving the control signal of FIG. 4 is inoperative.
  • the ninth breaker CB9 may not turn off the switch. have.
  • vibration may not occur. That is, the waveform W1 sensed by the vibration sensor 142 may have a magnitude (amplitude) at each of the first time point T1 and the second time point T2 smaller than the reference size REF.
  • the controller 144 of the gateway 14 may detect that the switch is inoperative when the magnitude of the waveform W1 is smaller than the reference magnitude REF at each of the first time point T1 and the second time point T2. have.
  • FIG. 7 is a diagram illustrating an example of a waveform sensed by a vibration sensing sensor when a specific breaker having a possibility of departure receives a control signal of FIG. 4 to operate a switch.
  • the duration of vibration generated when the ninth circuit breaker CB9 is operated is relatively related. Can be increased.
  • the waveform W2 sensed by the vibration sensor 142 has a magnitude (amplitude) greater than the reference magnitude REF at the second time point T2 after a predetermined time has elapsed from the first time point T1. Can be.
  • the controller 144 of the gateway 14 may detect that there is a possibility of departure of the ninth breaker CB9. have.
  • the breaker management system may detect the non-operation of the switch or the likelihood of departure of the breaker based on the vibration generated during the switch operation of the breaker.
  • FIG. 8 is a diagram illustrating an example of a notification provided when a possibility of departure of a specific breaker is detected according to the embodiment shown in FIG. 7.
  • the controller 144 of the gateway 14 may detect the ninth breaker CB9 through the HMI 40.
  • the screen 800 indicating the possibility of departure may be displayed.
  • the screen 800 may include a message for inducing an administrator or a user to check a fastening state of the ninth breaker CB9 as the possibility of departure of the ninth breaker CB9 is detected.
  • An administrator or a user may conveniently confirm that there is a possibility of departure of the ninth breaker CB9 based on the screen 800, and may take measures accordingly.
  • the breaker management system may provide a detection result to an administrator or a user by detecting the non-operation of the switch or effectively detecting the possibility of departure of the breaker, based on the vibration generated when the breaker switches. Accordingly, the manager or the user can more conveniently and effectively manage the breakers in the switchboard panel 10.

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Abstract

L'invention concerne un système permettant de gérer un disjoncteur dans un tableau de distribution. Le système comprend un capteur de détection et un appareil de commande. Le capteur de détection détecte une vibration d'un commutateur inclus dans le disjoncteur. En outre, l'appareil de commande transmet, au disjoncteur, un signal de commande permettant de commander le commutateur. En outre, l'appareil de commande détecte une possibilité de déviation du disjoncteur ou un non fonctionnement du commutateur, sur la base d'une forme d'onde de détection qui est une forme d'onde de la vibration détectée par le capteur de détection destiné à détecter une vibration.
PCT/KR2019/000492 2018-03-14 2019-01-11 Système permettant de gérer un disjoncteur dans un tableau de distribution Ceased WO2019177253A1 (fr)

Applications Claiming Priority (2)

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KR10-2018-0029949 2018-03-14
KR1020180029949A KR102160425B1 (ko) 2018-03-14 2018-03-14 배전반 내 차단기 관리 시스템

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WO2019177253A1 true WO2019177253A1 (fr) 2019-09-19

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Cited By (1)

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CN112665707A (zh) * 2020-12-15 2021-04-16 国网天津市电力公司电力科学研究院 一种变压器短路冲击后累积效应及诊断方法

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KR102163218B1 (ko) * 2020-03-31 2020-10-08 주식회사 목양종합건축사사무소 무정전 전원 공급 장치를 구비한 건축물 내 배전반 제어 시스템
CN118507991A (zh) 2020-04-13 2024-08-16 旭化成株式会社 复合型单层化学交联分隔件

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KR101194021B1 (ko) * 2012-05-10 2012-10-24 주식회사 포스 다면적 온도감지를 이용한 배전반
KR101568845B1 (ko) * 2015-04-15 2015-11-20 주식회사 영원기전 진동감지 기능이 향상된 수배전반

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CN112665707A (zh) * 2020-12-15 2021-04-16 国网天津市电力公司电力科学研究院 一种变压器短路冲击后累积效应及诊断方法
CN112665707B (zh) * 2020-12-15 2023-03-03 国网天津市电力公司电力科学研究院 一种变压器短路冲击后累积效应及诊断方法

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