CN106026404A - Power supply system capable of automatic fault isolation and quick power transmission - Google Patents

Abstract

The invention discloses a power supply system for automatic fault isolation and rapid power transmission, which includes: several monitoring points and power distribution master stations/distribution substations; the power supply system includes sequentially connected power distribution master stations/distribution sub network, microprocessor, and fault information publishing management module; the main power distribution station/substation includes a substation and a detection transmission system, and the detection transmission system includes a fault monitoring/acquisition device, and the fault monitoring/acquisition device is set There is a carrier communication card, and the two ends of the carrier communication card are connected with inductive couplers; the microprocessor has the ability to capture fault information, and cooperates with the main power distribution station/sub-station to realize automatic fault isolation and non-faulty areas of power distribution lines section restores power. The invention can automatically isolate the failure of the power supply system, realize rapid restoration of the power supply system, avoid frequent power outages, improve the stability of the power supply system, reduce operation and maintenance costs, have better safe use performance, and meet actual use requirements.

Description

A power supply system for automatic fault isolation and rapid power transmission

technical field

The invention specifically relates to a power supply system for automatic fault isolation and rapid power transmission, which belongs to the technical field of power supply systems.

Background technique

With the rapid development of the economy, in order to meet the growing demand for electricity, the number of substations and transmission lines in the power system is increasing. After a failure in the power system, how to restore the operation of the power system in a timely and effective manner has become our urgent need A practical problem to solve. Due to the complex terrain in some areas, there are many crossing transmission lines and transmission lines. When the transmission line fails, especially the transmission professionals want to determine the exact location of the fault point in the first time, so as to avoid detours; but conventional The best solution is to call the report on the spot by the duty officer, and then fax it to the dispatching department and the professional team, or ask the protection professionals to call the report at the remote end through the telephone line. Generally, it will take several hours to get it at the fastest. report, the efficiency is low, and the substation is currently unattended, and after some power system failures, professionals must drive to the substation to obtain the report, which is time-consuming and laborious, and seriously affects the speed of fault handling; especially in thunderstorms, strong winds, etc. In extreme weather such as heavy fog or fog, it will be difficult to quickly restore power supply after the power system fails.

So far, the research on the isolation of power faults and the rapid recovery of power supply systems at home and abroad is still at the bottom. Currently. The coverage of communication networks is getting wider and wider, and the distribution of communication base stations is becoming more and more scattered. In rural areas, mountainous areas or remote places, the power supply of base station equipment is a key issue in the early construction and later maintenance. The traditional power supply schemes include: separate mains power supply, mixed power supply with mains power tanker and other schemes. These schemes solve the power supply problem of base station equipment to a certain extent, but in actual use, there may be many fault areas and frequent It is difficult to quickly restore power supply, high operation and maintenance costs, or insufficient reliability of power supply. For this reason, it is necessary to design a new technical solution that can comprehensively solve the deficiencies in the prior art.

Contents of the invention

The present invention is aimed at the deficiencies of the existing technology, and provides a power supply system for automatic isolation of faults and fast power transmission. Under the premise of being convenient to use, the power supply system can automatically isolate the fault area of the power supply system and realize rapid recovery. The power supply system avoids frequent power outages, improves the stability of the power supply system, and reduces the cost of operation and maintenance. It has better safety performance and meets the actual use requirements.

In order to solve the above problems, the technical scheme adopted in the present invention is as follows:

A power supply system for automatic fault isolation and rapid power transmission, comprising: a number of monitoring points and a fault monitoring and acquisition device containing a carrier communication card installed in each of the monitoring points;

The power supply system also includes: successively connected power distribution main station/sub-station, dispatching data network, microprocessor, and fault information release management module;

The main power distribution station/substation includes a substation, and a detection and transmission system for detecting and isolating faults in the substation. The substation is electrically connected to the detection and transmission system in two directions. device and a traveling wave distance measuring device, the detection transmission system includes a fault monitoring/acquisition device, a carrier communication card is arranged in the fault monitoring/acquisition device, and an inductive coupler is connected to both ends of the carrier communication card through a bridge;

The microprocessor is used to analyze, characterize, store and judge the operation of each line or to monitor the fault current of the current signal, monitor and control the feeder switch, have the telemetry function of the remote terminal device, and have the ability to capture fault information , cooperate with the distribution master station/distribution substation to realize the fault automatic isolation of the distribution line and the restoration of power supply in the non-fault section;

The carrier communication card is electrically connected to the microprocessor to realize sending signals according to the protocol;

The power supply system for automatic fault isolation and rapid power transmission also includes a power supply device that rectifies a 220V AC power supply to a 24V DC power supply, and then supplies power to the microprocessor and carrier communication card through DC/DC, and another On the one hand, to charge the battery pack, when the power supply unit loses AC power input, the battery pack will automatically provide 24V DC power to the microprocessor, and the battery can maintain the power supply unit at least work and transmit the fault to the designated superior dispatcher or more time;

A research and judgment module is also connected to the microprocessor, and a command and control system platform is connected to the research and judgment module, and the command and control system platform is also electrically connected to the main power distribution station/substation in reverse;

As an improvement of the above technical solution, a main carrier machine and a protocol converter are installed in the main power distribution station/substation, the main carrier machine adopts a model of DLC-2100, and the protocol converter adopts a model of ACP4001 The industrial computer, the modulation signal output by each monitoring point is transmitted to the power distribution main station/distribution substation through the power cable, coupled to the main carrier machine, and the main carrier machine demodulates the modulated signal to the protocol The converter realizes the corresponding protocol conversion, forwards it to the peripheral debugging automation system through the remote terminal device in the power distribution master station/distribution substation, or directly transmits it to the peripheral debugging automation system through a modem, and the main carrier machine adopts 101 The protocol collects the signals of the monitoring points and sends them to the protocol converter through multiple serial ports to realize the conversion from the 101 protocol to the CDT protocol.

As an improvement of the above-mentioned technical solution, the fault information release management module includes a main station switch, a communication server, a database server, a mobile phone terminal, a workstation, a reverse physical isolator and a WEB server, and the said main station switch communicates with the said main station switch through a microprocessor The dispatching data network is connected, the mobile terminal is connected to the master switch through the database server, the workstation is connected to the master switch, and the master switch is connected to the WEB server through the reverse physical isolator.

As an improvement of the above technical solution, the inductive coupler couples the modulated signal to the shielding layer of the power cable, and the power supply system also includes a ring network cabinet, and the ring network cabinet bypasses the power cable switch cabinet through signal line bridging. signal connection.

As an improvement of the above technical solution, the research and judgment module judges the failure factor of the main power distribution station/sub-station headquarters according to the alarm information, and locates the fault section and its geographical location; receives the data transmitted from the dispatching data network and information, analyze the cause of the failure, and cooperate with the research and judgment module to send the research, judgment, analysis and processing information to the command and control system platform.

As an improvement of the above technical solution, the command and control system platform is used to receive the information from the research and judgment module and give instructions for the next step, and send instructions to dispatch intelligent detectors and maintenance personnel to conduct on-site surveys, and analyze the intelligent detectors and maintenance personnel. The inspection data, and fundamentally analyze the results to determine the cause of the alarm information, and carry out related hidden danger analysis, hidden danger query, auxiliary analysis of disconnection, and active power distribution inspection and maintenance.

The present invention compares with prior art, and implementation effect of the present invention is as follows:

The power supply system for automatic fault isolation and rapid power transmission described in the present invention can automatically isolate the fault area of the power supply system under the premise of being convenient to use, which is convenient for real-time and implementation operation, and can The power failure will be monitored, alarmed and message released, and the cause of the power failure will be judged by the research and judgment module, and the information will be sent to the command and control system in the first time, and the command and control system will give corresponding instructions according to the cause of the failure information. The follow-up analysis, assignment, protection and decision-making and other related operations are coordinated and integrated to facilitate the monitoring and safe operation of the power system, realize the rapid recovery of the power supply system, avoid frequent power outages, improve the stability of the power supply system, and reduce The cost of operation and maintenance is reduced, and it has good safety performance and meets the actual use requirements.

Description of drawings

Fig. 1 is a schematic structural diagram of a power supply system for automatic fault isolation and rapid power transmission according to the present invention;

Fig. 2 is a schematic diagram of the internal structure of a power distribution master station/distribution substation of a power supply system with automatic fault isolation and rapid power transmission according to the present invention;

Fig. 3 is a structural schematic diagram of a fault monitoring and collecting device in a power supply system for automatic fault isolation and rapid power transmission according to the present invention.

detailed description

The content of the present invention will be described below in conjunction with specific embodiments.

As shown in Fig. 1 and Fig. 3, it is a schematic structural diagram of a power supply system for automatic fault isolation and fast power transmission according to the present invention.

A power supply system for automatic fault isolation and rapid power transmission according to the present invention includes: several monitoring points and a fault monitoring and acquisition device containing a carrier communication card 31 installed in each monitoring point; the power supply system includes successively connected power distribution mains Station/distribution substation 10, dispatching data network 40, microprocessor 50, fault information release management module 60; power distribution master station/distribution substation 10 includes substation 20, and a detection and transmission system for detecting and isolating substation 20 faults , the substation 20 is bidirectionally electrically connected to the detection and transmission system, the substation 20 includes a switch 21, a wave recorder 22, an inductor 23 and a traveling wave distance measuring device 24, the detection and transmission system includes a fault monitoring/acquisition device 30, a fault monitoring/acquisition device 30 There is a carrier communication card 31 inside, and the two ends of the carrier communication card 31 are connected with an inductive coupler 32 through a bridge; the microprocessor 50 is used to analyze, characterize, store and judge the operation of each line or monitor the fault current of the current signal , monitor and control the feeder switch, have the telemetry function of the remote terminal device, and have the ability to capture fault information, cooperate with the main power distribution station/sub-station 10 to realize the automatic fault isolation of the distribution line and the recovery of power supply in the non-faulty section The carrier communication card 31 is electrically connected with the microprocessor 50 to realize sending signals according to the protocol; the power supply system also includes a power supply device, and the power supply device includes rectifying the 220V AC power supply to a 24V DC power supply, and then supplies power to the microprocessor 50 through DC/DC71 And carrier communication card 31, on the other hand, to storage battery pack 72 charging, when power supply device loses AC power input, storage battery pack 72 will automatically provide 24V direct current power supply to microprocessor 50, and storage battery pack 72 can keep power supply device work at least will Fault transmission to designated superior scheduling or more time; Microprocessor 50 is also connected with research and judgment module 51, research and judgment module 51 is connected with command and control system platform 52, and command and control system platform 52 is also connected with said power distribution master station/ The distribution substation 10 is electrically connected in reverse. The power supply system for automatic fault isolation and rapid power transmission described in the present invention can automatically isolate the fault area of the power supply system under the premise of being convenient to use, which is convenient for real-time and implementation operation, and can Monitor, alarm and release messages for power failures, and the research and judgment module will judge the cause of the power failure, and send the information to the command and control system in the first time, and the command and control system will give corresponding instructions according to the cause of the failure information. The follow-up analysis, assignment, protection and decision-making and other related operations are coordinated and integrated to facilitate the monitoring and safe operation of the power system, realize the rapid recovery of the power supply system, avoid frequent power outages, improve the stability of the power supply system, and reduce The cost of operation and maintenance is reduced, and it has good safety performance and meets the requirements of actual use.

Further improved, as shown in Figure 2, a main carrier machine 11 and a protocol converter 12 are installed in the power distribution master station/distribution substation 10, the main carrier machine 11 adopts the model DLC-2100 product, and the protocol converter 12 adopts The industrial computer of model ACP4001, the modulated signal output by each monitoring point is transmitted to the power distribution main station/substation 10 through the power cable, and coupled to the main carrier machine 11, which demodulates the modulated signal to the protocol The converter 12 realizes the corresponding protocol conversion, forwards it to the peripheral debugging automation system via the remote terminal device in the power distribution master station/distribution substation 10, or directly transmits it to the peripheral debugging automation system through a modem, and the main carrier machine 11 The 101 protocol is used to collect the signals of the monitoring points, and the signals are sent to the protocol converter 12 through multiple serial ports, so as to realize the conversion from the 101 protocol to the CDT protocol. In order to facilitate the monitoring and safe operation of the power system, it realizes the rapid recovery of the power supply system, avoids frequent power outages, improves the stability of the power supply system, and reduces the operation and maintenance costs. It has good safety performance and meets the actual use requirements.

Further improved, as shown in Figure 1, the fault information release management module 60 includes a main station switch 61, a communication server 62, a database server 63, a mobile phone terminal 64, a workstation 65, a reverse physical isolator 66 and a WEB server 67, the main station Switch 61 is connected with dispatching data network 40 by microprocessor 50, and mobile phone terminal 64 is connected with master station switch 61 by described database server 63, and workstation 65 is connected with master station switch 61, and master station switch 61 passes reverse physical isolator 66 It is connected to the WEB server 67 . The power supply system can automatically isolate the fault area of the power supply system, which is convenient for real-time and implementation operation. It can monitor and alarm the power failure and release the message in the first time, and the research and judgment module can judge the cause of the power failure, and in the first time The information is sent to the command and control system in a short time, and the command and control system gives corresponding instructions according to the cause of the fault information for subsequent analysis, dispatch, protection, decision-making and other related operations, and overall planning and integrated management, so as to facilitate the monitoring and control of the power system safe operation.

Specifically, the inductive coupler 32 couples the modulated signal to the shielding layer of the power cable. The power supply system also includes a ring network cabinet, and the ring network cabinet bypasses the power cable switch cabinet by means of signal line bridging to realize signal connection.

Specifically, the research and judgment module 51 judges according to the alarm information that it is the fault factor of the main power distribution station/substation 10 headquarters, and locates the fault section and its geographical location; receives the data and information transmitted from the dispatching data network 40, Analyze the cause of the failure, and cooperate with the research and judgment module 51 to send the information after research and judgment, analysis and processing to the command and control system platform 52. The command and control system platform 52 is used to receive the information sent by the research and judgment module 51 and give instructions for the next step, and send instructions to dispatch smart detectors and maintenance personnel to conduct on-site surveys, and analyze the inspection data of the smart detectors and maintenance personnel, and fundamentally analyze The results are judged to be the cause of the alarm information, and relevant hidden danger analysis, hidden danger query, auxiliary analysis of disconnection and active power distribution inspection and maintenance are carried out.

The above content is a detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be deemed to belong to the protection scope of the present invention.

Claims (6)

1. the electric power system of the quick power transmission of automatic separating fault, it is characterised in that: including: some monitoring points and be provided with the malfunction monitoring harvester including carrier communication card (31) in described each monitoring point；

Distribution main website/distribution substation (10) that described electric power system includes being sequentially connected, dispatch data net (40), microprocessor (50), fault message release management module (60)；

Described distribution main website/distribution substation (10) include transformer station (20), and it is used for detecting and isolating the detection transmission system of transformer station (20) fault, described transformer station (20) electrically connects with described detection transmission system bidirectional, described transformer station (20) includes switch (21), oscillograph (22), induction apparatus (23) and traveling wave ranging device (24), described detection transmission system includes malfunction monitoring/harvester (30), it is provided with carrier communication card (31) in described malfunction monitoring/harvester (30), there is inductive coupler (32) at described carrier communication card (31) two ends by bridging connection；

Described microprocessor (50) for current signal through analyze, qualitative, store and judge the operation of every circuit or carry out fault current monitoring, carry out the monitoring and control of feeder switch, there is the telemetry function of remote terminal unit, and there is the ability that fault message catches, coordinate distribution main website/distribution substation (10) to realize automatic fault isolation and the restoring power supply in non-broken-down section of distribution line；

Described carrier communication card (31) electrically connects with described microprocessor (50), it is achieved send signal by stipulations；

Described electric power system also includes electric supply installation, described electric supply installation includes that by 220V alternating current power supply rectification be 24V DC source, again through DC/DC(71) it is powered at microprocessor (50) and carrier communication card (31), on the other hand, charge to accumulator battery (72), when supply unit loses alternating current power supply input, accumulator battery (72) will provide 24V DC source will automatically to microprocessor (50), and accumulator battery (72) is able to maintain that supply unit at least to work fault and is sent to specify higher level's scheduling or more time；

Be also associated with on described microprocessor (50) studying and judging module (51), described in study and judge the upper connection of module (51) and have command and control system platform (52), described command and control system platform (52) also reversely to electrically connect with described distribution main website/distribution substation (10).

nullA kind of electric power system of the quick power transmission of automatic separating fault，It is characterized in that: in described distribution main website/distribution substation (10), main carrier machine (11) is installed、Protocol converter (12)，Described main carrier machine (11) uses model to be DLC-2100 product，Described protocol converter (12) uses model to be the industrial computer of ACP4001，The modulated signal of described each monitoring point output is sent to this distribution main website/distribution substation (10) by power cable，It coupled to described main carrier machine (11)，Modulated signal demodulation is delivered to described protocol converter (12) by this main carrier machine (11)，Realize the conversion of corresponding stipulations，The debugging automated system of periphery it is forwarded to via the terminal unit device in this distribution main website/distribution substation (10)，Or be directly over modem be sent to periphery debugging automated system，Described main carrier machine (11) uses 101 stipulations to gather the signal of described each monitoring point，And deliver to described protocol converter (12) by Multi-serial port，Realize the conversion to CDT stipulations of 101 stipulations.

A kind of electric power system of the quick power transmission of automatic separating fault, it is characterized in that: described fault message release management module (60) includes station exchange (61), communication server (62), database server (63), mobile phone terminal (64), work station (65), reversely physical isolator (66) and WEB server (67), described station exchange (61) is connected with described dispatch data net (40) by microprocessor (50), described mobile phone terminal (64) is connected with station exchange (61) by described database server (63), described work station (65) is connected with station exchange (61), station exchange (61) is connected with WEB server (67) by described reverse physical isolator (66).

A kind of electric power system of the quick power transmission of automatic separating fault, it is characterized in that: modulated signal is coupled to the screen layer of power cable by described inductive coupler (32), described electric power system also includes ring main unit, and described ring main unit is walked around power cable switch cubicle by holding wire bridging mode and realized the connection of signal.

A kind of electric power system of the quick power transmission of automatic separating fault, it is characterized in that: described in study and judge module (51) judges it is distribution main website/distribution substation (10) general headquarters failure factor according to warning message, and navigate to fault section and geographical position thereof；Receive the data that transmitted by described dispatch data net (40) and information, analyze fault cause, and study and judge the information after module (51) will be studied and judged and analyzed and processed described in coordinating and be sent to command and control system platform (52).

A kind of electric power system of the quick power transmission of automatic separating fault, it is characterized in that: described command and control system platform (52) is studied and judged, for reception, information that module (51) transmits and makes next step instruction, and transmission instruction carries out assigning intelligent detector and maintainer reconnaissance at criminal scene, and analyze intelligent detector and the inspection data of maintainer, and analysis result judgement is the cause of warning message at all, and carry out Analysis of Potential, hidden danger inquiry, broken string assistant analysis and the active distribution maintenance and inspection being correlated with.