CN111579921A - Relay protection debugging method - Google Patents
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- CN111579921A CN111579921A CN202010399642.9A CN202010399642A CN111579921A CN 111579921 A CN111579921 A CN 111579921A CN 202010399642 A CN202010399642 A CN 202010399642A CN 111579921 A CN111579921 A CN 111579921A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- 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
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- 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
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- 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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- 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)
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- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a relay protection debugging method, which comprises the following debugging steps: s1, dividing the power transmission line into a plurality of grid units and marking corresponding numbers, wherein the grid units are respectively provided with relay protection units; s2, the wireless communication equipment transmits the initial diagnosis information of the grid cells with corresponding numbers to the data control center in a wireless transmission mode; s3, comparing and analyzing the initial diagnosis information with the fault reason data stored in the fault database to obtain the secondary diagnosis information of the fault reason of the grid unit; s4, the debugger sends the failure removal confirmation information and the failure reason result information of the grid unit to the data control center through the intelligent terminal; s5, the data control center receives and stores the troubleshooting validation information and the failure cause result information of the grid cell. The invention can realize relay protection and remote intelligent monitoring of the power transmission line, and a debugger can quickly and accurately position and eliminate a fault area.
Description
Technical Field
The invention relates to the technical field of relay protection, in particular to a relay protection debugging method.
Background
At present, an electric power system is a large system consisting of electric energy generation, transmission, distribution and power utilization links, the rapid development of the electric power system continuously puts new requirements on relay protection of the electric power system, and accidents happen anywhere in the electric power system, which may have great influence on the operation of the electric power system. When a fault occurs on a line or power equipment in the power transmission system to endanger the safe operation of the power system, the relay protection device can send a warning signal to an operation attendant in time or directly send a trip command to a controlled breaker to quickly stop the fault from continuing to enlarge, so that the automatic protection measure of the power transmission system is realized. A relay protection device is a principle of a relay protection operation mainly based on a change in an electrical quantity when a short circuit or an abnormality occurs in an element in an electric power system.
In the actual maintenance work of the existing power transmission system, due to the fact that the laying distance of the line is long, the terrain environment where the line passes through is complex and changeable, the fault reason may be equipment fault or short circuit of the line caused by other reasons, and the fault which is generated at a certain position cannot be quickly and accurately positioned, and the reason of the fault is judged. Based on the above state of the art, there are mainly drawbacks and disadvantages: the control of relay protection is very inconvenient, a debugger can determine the reason of the fault only after field detection, the range of line inspection is wider, the fault detection efficiency is not high, and the labor and time cost is higher.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a relay protection debugging method, which can realize relay protection and remote intelligent monitoring of a power transmission line, and a debugger can quickly and accurately locate and eliminate a fault area.
The above object of the present invention is achieved by the following technical solutions:
a relay protection debugging method sequentially comprises the following execution steps:
s1, dividing the power transmission line into a plurality of grid units, marking each grid unit with a corresponding number, respectively providing a relay protection unit, acquiring power parameters of the corresponding grid unit in real time by a signal acquisition module of the relay protection unit, comparing and judging the acquired power parameters with a set threshold value by a signal processing module of the relay protection unit, cutting off a target loop of the grid unit by a protection execution module of the relay protection unit when the acquired judgment result indicates that a fault or abnormal operation occurs, and inputting initial diagnosis information of the fault reason to a communication module of the relay protection unit;
s2, each network unit is equipped with wireless communication equipment, the input end of the wireless communication equipment is connected with the communication module of the relay protection unit with corresponding number, and the wireless communication equipment receives the initial diagnosis information of the grid unit with corresponding number and transmits the information to the data control center in a wireless transmission mode;
s3, after receiving the initial diagnosis information of the grid unit with the corresponding number, the data control center compares and analyzes the initial diagnosis information with the fault reason data stored in the fault database to obtain the secondary diagnosis information of the fault reason of the grid unit, and transmits the secondary diagnosis information of the fault reason of the grid unit to the intelligent terminal held by the debugger in a wireless transmission mode;
s4, after receiving the secondary diagnosis information of the grid unit fault reason according to the intelligent terminal, the debugger carries out on-site investigation and diagnosis on the grid unit with the corresponding number, and after the fault removal is finished, the debugger sends the fault removal confirmation information and the fault reason result information of the grid unit to the data control center in a wireless transmission mode through the intelligent terminal;
and S5, the data control center receives and stores the failure removal confirmation information and the failure reason result information of the grid unit, the data control center transmits a reset signal to the wireless communication equipment with the corresponding number after the final confirmation, and the relay protection unit receives the reset signal, and the protection execution module of the relay protection unit is connected with the target loop of the grid unit to recover the normal operation of the grid unit with the corresponding number in the power transmission line.
By adopting the technical scheme, in the execution steps of the method, when the judgment result obtained by the signal processing module of the relay protection unit indicates that the fault or abnormal operation occurs, the protection execution module of the relay protection unit cuts off the target loop of the grid unit and inputs the initial diagnosis information of the fault reason into the communication module of the relay protection unit, the wireless communication equipment receives the initial diagnosis information of the grid unit with the corresponding number and transmits the initial diagnosis information to the data control center in a wireless transmission mode, the data control center transmits the secondary diagnosis information of the fault reason of the grid unit to the intelligent terminal held by a debugger in a wireless transmission mode, the debugger transmits the fault removal confirmation information and the fault reason result information of the grid unit to the data control center in a wireless transmission mode through the intelligent terminal, and transmits the reset signal to the wireless communication equipment with the corresponding number after final confirmation, the relay protection unit is connected with the target loop of the grid unit after receiving the reset signal, and normal operation of grid units with corresponding numbers in the power transmission line is recovered; the electric power transmission line is divided into a plurality of grid units with corresponding numbers, when a certain grid unit with a certain number has a fault or runs abnormally, initial diagnosis information of a fault reason is transmitted to the data control center in a wireless transmission mode, the initial diagnosis information is compared and analyzed with fault reason data stored in a fault database, secondary diagnosis information of the obtained fault reason is transmitted to an intelligent terminal held by a debugger, and the debugger comprises the number and the fault reason of the corresponding grid unit according to the secondary diagnosis information received by the intelligent terminal. The debugging personnel can be fast accurately positioned to the grid units of the electric power transmission line with the corresponding numbers, fault detection and maintenance work are carried out, and the debugging personnel send fault reason result information to the data control center through the intelligent terminal, so that relay protection and remote intelligent monitoring of the electric power transmission line are realized, the work efficiency of fault removal of the electric power transmission line is improved, and meanwhile, a large amount of labor cost input is reduced.
The present invention in a preferred example may be further configured to: the relay protection unit comprises a signal acquisition module, a signal processing module, a protection execution module and a communication module, wherein the signal acquisition module is used for acquiring signal parameters of corresponding grid units, the signal processing module is used for calculating and processing the signal parameters and outputting corresponding execution signals, and the protection execution module receives the execution signals and executes to switch on or switch off target loops of the grid units.
By adopting the technical scheme, each module of the relay protection unit respectively operates and works independently and is in control connection with the signal processing module, so that the signal acquisition precision and the control sensitivity of the signal acquisition, signal processing and signal execution of the relay protection unit are obviously improved, and the relay protection unit and the relay protection units of other grid units can be managed by the data control center in a unified way.
The present invention in a preferred example may be further configured to: the signal processing module is a single chip microcomputer, the input end of the single chip microcomputer is in signal connection with the signal acquisition module, and the output end of the single chip microcomputer is in signal connection with the protection execution module and the communication module respectively.
By adopting the technical scheme, the signal processing module adopts a single chip microcomputer mode, the control capability is strong, the instructions of the single chip microcomputer are rich, and various requirements of industrial control can be fully met.
The present invention in a preferred example may be further configured to: the protection execution module is a circuit breaker or an isolating switch connected to the power transmission line, and the output end of the single chip microcomputer is further electrically connected with a buzzer.
By adopting the technical scheme, the circuit breaker or the isolating switch can be used for cutting off a power transmission line which has faults or does not normally run, and meanwhile, the singlechip controls the honey device connected with the singlechip to generate alarm sound.
The present invention in a preferred example may be further configured to: the data control center comprises a main control computer, a fault database and a wireless transmission unit, wherein the wireless transmission units of the wireless communication equipment, the intelligent terminal and the main control computer are respectively in 4G network communication connection with a 4G network signal tower.
By adopting the technical scheme, the 4G network communication enables the network structure to be reasonable, the data transmission rate to be higher, and meanwhile, the number of signal channels required by the network transmission data in the segment is reduced, so that the network transmission efficiency is improved, and the phenomenon of network congestion in a short time is prevented.
The present invention in a preferred example may be further configured to: the failure database is used for managing and storing failure elimination confirmation information and failure reason result information of grid cells with corresponding numbers.
By adopting the technical scheme, a large amount of fault reason result information is stored in the fault database, and the main control computer calls the fault reason result information as fault reason data, analyzes and compares the fault reason result information with the initial diagnosis information, and then obtains secondary diagnosis information.
The present invention in a preferred example may be further configured to: the intelligent terminal is a mobile phone, a tablet or other intelligent equipment supporting the 4G network.
By adopting the technical scheme, the debugger can establish 4G network communication with the relay protection unit and the data control center through the 4G network by holding the intelligent terminal, so that the debugging can receive or send information in real time, and the debugging is convenient to check and maintain the power transmission line in time.
The present invention in a preferred example may be further configured to: the length of the grid unit is 3-5 km, and the relay protection unit collects the power parameters of the grid unit in real time to be current, voltage or frequency.
By adopting the technical scheme, the relay protection unit acquires the current, the voltage or the frequency of the grid unit with the length of 3-5 km in real time and compares and judges the current, the voltage or the frequency with a set threshold value.
In summary, the invention includes at least one of the following beneficial technical effects:
1. in the execution steps of the method, when the judgment result obtained by the signal processing module of the relay protection unit indicates that the fault or abnormal operation occurs, the protection execution module of the relay protection unit cuts off the target loop of the grid unit and inputs the initial diagnosis information of the fault reason into the communication module of the relay protection unit, the wireless communication equipment receives the initial diagnosis information of the grid unit with the corresponding number and transmits the initial diagnosis information to the data control center in a wireless transmission mode, the data control center transmits the secondary diagnosis information of the fault reason of the grid unit to the intelligent terminal held by a debugger in a wireless transmission mode, the debugger transmits the fault elimination confirmation information and the fault reason result information of the grid unit to the data control center in a wireless transmission mode through the intelligent terminal, and transmits the reset signal to the wireless communication equipment with the corresponding number after final confirmation, the relay protection unit is connected with the target loop of the grid unit after receiving the reset signal, and normal operation of grid units with corresponding numbers in the power transmission line is recovered; the electric power transmission line is divided into a plurality of grid units with corresponding numbers, when a certain grid unit with a certain number has a fault or runs abnormally, initial diagnosis information of a fault reason is transmitted to the data control center in a wireless transmission mode, the initial diagnosis information is compared and analyzed with fault reason data stored in a fault database, secondary diagnosis information of the obtained fault reason is transmitted to an intelligent terminal held by a debugger, and the debugger comprises the number and the fault reason of the corresponding grid unit according to the secondary diagnosis information received by the intelligent terminal. The debugging personnel can quickly and accurately position the grid units with the corresponding numbers to the power transmission line to carry out fault detection and maintenance work, and then send fault reason result information to the data control center through the intelligent terminal, so that relay protection and remote intelligent monitoring of the power transmission line are realized, the working efficiency of fault removal of the power transmission line is improved, and a large amount of labor cost investment is reduced;
2. the modules of the relay protection unit respectively and independently operate and are in control connection with the signal processing module, so that the signal acquisition precision and the control sensitivity of signal acquisition, signal processing and signal execution of the relay protection unit are obviously improved, and the relay protection unit and the relay protection units of other grid units are conveniently and uniformly managed by a data control center. The circuit breaker or the isolating switch can be used for cutting off a power transmission line which has faults or does not normally run, and meanwhile, the singlechip controls the honey device connected with the singlechip to generate alarm sound;
3. the 4G network communication of the invention ensures that the network structure is reasonable, the data transmission rate is faster, and simultaneously, the signal channels required by the network transmission data in the segment are reduced, thereby improving the network transmission efficiency and preventing the network congestion phenomenon in a short time; the intelligent terminal is held by a debugger, 4G network communication is established with the relay protection unit and the data control center through the 4G network, information can be received or sent in real time, and the electric power transmission line can be conveniently and timely inspected and maintained.
Drawings
FIG. 1 is a schematic diagram of the debugging principles of the present invention.
Fig. 2 is a schematic structural diagram of the relay protection unit of the present invention.
Marked as 1 in the figure, power transmission line; 11. a grid cell; 2. a relay protection unit; 21. a signal acquisition module; 22. a signal processing module; 23. a protection execution module; 24. a communication module; 3. a data control center; 31. a main control computer; 32. a fault database; 33. a wireless transmission unit; 4. 4G network signal tower; 5. an intelligent terminal; 6. a wireless communication device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the method for debugging relay protection disclosed by the present invention sequentially includes the following steps:
s1, dividing the power transmission line 1 into a plurality of grid units 11, wherein the length of each grid unit 11 is 3-5 km, each grid unit 11 is marked with a corresponding number, each grid unit 11 is provided with a relay protection unit 2, a signal acquisition module 21 of each relay protection unit 2 acquires power parameters of the corresponding grid unit 11 in real time, the power parameters are current, voltage or frequency, a signal processing module 22 of each relay protection unit 2 compares and judges the acquired power parameters with a set threshold value thereof according to the acquired power parameters, when the acquired judgment result indicates that a fault or abnormal operation occurs, a protection execution module 23 of each relay protection unit 2 cuts off a target loop of the corresponding grid unit 11, and initial diagnosis information of the fault reason is input into a communication module 24 of each relay protection unit 2;
s2, each network unit is equipped with a wireless communication device 6, the input end of the wireless communication device 6 is connected with the communication module 24 of the relay protection unit 2 with the corresponding number, and the wireless communication device 6 receives the initial diagnosis information of the grid unit 11 with the corresponding number and transmits the information to the data control center 3 in a wireless transmission mode;
s3, after receiving the initial diagnosis information of the grid cell 11 with the corresponding number, the data control center 3 compares and analyzes the initial diagnosis information with the fault reason data stored in the fault database 32 to obtain the secondary diagnosis information of the fault reason of the grid cell 11, and the data control center 3 transmits the secondary diagnosis information of the fault reason of the grid cell 11 to the intelligent terminal 5 held by a debugger in a wireless transmission mode;
s4, after receiving the secondary diagnosis information of the fault reason of the grid cell 11 according to the intelligent terminal 5, the debugger performs on-site investigation and diagnosis on the grid cell 11 with the corresponding number, and after the fault removal is finished, the debugger sends the fault removal confirmation information and the fault reason result information of the grid cell 11 to the data control center 3 in a wireless transmission mode through the intelligent terminal 5;
s5, the data control center 3 receives and stores the failure removal confirmation information and the failure cause result information of the grid cell 11, and after the final confirmation, transmits the reset signal to the wireless communication device 6 with the corresponding number, and after the relay protection unit 2 receives the reset signal, the protection execution module 23 thereof switches on the target circuit of the grid cell 11, and restores the normal operation of the grid cell 11 with the corresponding number in the power transmission line 1.
Referring to fig. 2, the relay protection unit 2 includes a signal acquisition module 21, a signal processing module 22, a protection execution module 23, and a communication module 24, where the signal acquisition module 21 is configured to acquire signal parameters of a corresponding grid unit 11, the signal processing module 22 is configured to perform operation processing on the signal parameters and output a corresponding execution signal, and the protection execution module 23 receives the execution signal and executes switching on or switching off of a target circuit of the grid unit 11. The signal processing module 22 is a single chip microcomputer, the input end of the single chip microcomputer is in signal connection with the signal acquisition module 21, and the output end of the single chip microcomputer is in signal connection with the protection execution module 23 and the communication module 24 respectively. The protection execution module 23 is a circuit breaker or an isolating switch connected to the power transmission line 1, and the output end of the single chip is also electrically connected with a buzzer. The signal acquisition module 21 includes a current transformer, a voltage transformer and a power supply.
The data control center 3 comprises a main control computer 31, a fault database 32 and a wireless transmission unit 33, wherein the wireless communication equipment 6, the intelligent terminal 5 and the wireless transmission unit 33 of the main control computer 31 are respectively in 4G network communication connection with the 4G network signal tower 4. The failure database 32 is used to manage and store failure-elimination confirmation information and failure cause result information of the grid cells 11 of the corresponding numbers. The intelligent terminal 5 is a mobile phone, a tablet or other intelligent equipment supporting a 4G network.
The implementation principle of the embodiment is as follows: when the judgment result obtained by the signal processing module 22 of the relay protection unit 2 indicates that a fault or abnormal operation occurs, the protection execution module 23 of the relay protection unit 2 cuts off the target loop of the grid unit 11, and inputs the initial diagnosis information of the fault reason to the communication module 24 of the relay protection unit 2, the wireless communication device 6 receives the initial diagnosis information of the grid unit 11 with the corresponding number and transmits the initial diagnosis information to the data control center 3 in a wireless transmission manner, the data control center 3 transmits the secondary diagnosis information of the fault reason of the grid unit 11 to the intelligent terminal 5 held by a debugger in a wireless transmission manner, the debugger transmits the fault removal confirmation information and the fault reason result information of the grid unit 11 to the data control center 3 in a wireless transmission manner through the intelligent terminal 5, and transmits the reset signal to the wireless communication device 6 with the corresponding number after final confirmation, after receiving the reset signal, the relay protection unit 2 switches on the target loop of the grid unit 11, and resumes the normal operation of the grid unit 11 with the corresponding number in the power transmission line 1; the power transmission line 1 is divided into a plurality of grid units 11 with corresponding numbers, when a certain grid unit 11 with a certain number has a fault or runs abnormally, initial diagnosis information of a fault reason is transmitted to the data control center 3 in a wireless transmission mode, after the initial diagnosis information is compared and analyzed with fault reason data stored in the fault database 32, obtained secondary diagnosis information of the fault reason is transmitted to the intelligent terminal 5 held by a debugger, and the debugger includes the number and the fault reason of the corresponding grid unit 11 according to the secondary diagnosis information received by the intelligent terminal 5. The debugger can quickly and accurately position the grid cells 11 with the corresponding numbers of the power transmission line 1 to perform fault detection and maintenance work, and then the debugger sends fault reason result information to the data control center 3 through the intelligent terminal 5.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (8)
1. A relay protection debugging method is characterized by sequentially comprising the following execution steps:
s1, dividing the power transmission line (1) into a plurality of grid units (11), marking each grid unit (11) with a corresponding number, respectively equipping each grid unit (11) with a relay protection unit (2), acquiring power parameters of the corresponding grid unit (11) in real time by a signal acquisition module (21) of each relay protection unit (2), comparing and judging the acquired power parameters with a set threshold value by a signal processing module (22) of each relay protection unit (2), cutting off a target loop of the grid unit (11) by a protection execution module (23) of each relay protection unit (2) when an obtained judgment result indicates that a fault or abnormal operation occurs, and inputting initial diagnosis information of a fault reason to a communication module (24) of each relay protection unit (2);
s2, each network unit is respectively and correspondingly provided with a wireless communication device (6), a communication connection is established between the input end of the wireless communication device (6) and the communication module (24) of the relay protection unit (2) with the corresponding number, and the wireless communication device (6) receives the initial diagnosis information of the grid unit (11) with the corresponding number and transmits the initial diagnosis information to the data control center (3) in a wireless transmission mode;
s3, after receiving the initial diagnosis information of the grid unit (11) with the corresponding number, the data control center (3) compares and analyzes the initial diagnosis information with the fault reason data stored in the fault database (32) to obtain the secondary diagnosis information of the fault reason of the grid unit (11), and the data control center (3) transmits the secondary diagnosis information of the fault reason of the grid unit (11) to the intelligent terminal (5) held by a debugger in a wireless transmission mode;
s4, after receiving the secondary diagnosis information of the fault reason of the grid unit (11) according to the intelligent terminal (5), the debugger carries out on-site investigation and diagnosis on the grid unit (11) with the corresponding number, and after the fault elimination is finished, the debugger sends the fault elimination confirmation information and the fault reason result information of the grid unit (11) to the data control center (3) in a wireless transmission mode through the intelligent terminal (5);
s5, the data control center (3) receives and stores the failure elimination confirmation information and the failure reason result information of the grid unit (11), after the final confirmation, the data control center transmits a reset signal to the wireless communication equipment (6) with the corresponding number, and after the relay protection unit (2) receives the reset signal, the protection execution module (23) thereof switches on the target loop of the grid unit (11), and the normal operation of the grid unit (11) with the corresponding number in the power transmission line (1) is recovered.
2. The relay protection debugging method according to claim 1, wherein the relay protection unit (2) comprises a signal acquisition module (21), a signal processing module (22), a protection execution module (23) and a communication module (24), the signal acquisition module (21) is used for acquiring signal parameters of the corresponding grid unit (11), the signal processing module (22) is used for calculating and processing the signal parameters and outputting a corresponding execution signal, and the protection execution module (23) receives the execution signal and executes to turn on or off a target circuit of the grid unit (11).
3. The relay protection debugging method according to claim 2, wherein the signal processing module (22) is a single chip microcomputer, an input end of the single chip microcomputer is in signal connection with the signal acquisition module (21), and an output end of the single chip microcomputer is in signal connection with the protection execution module (23) and the communication module (24), respectively.
4. The relay protection debugging method according to claim 3, comprising: the protection execution module (23) is a circuit breaker or a disconnecting switch connected to the power transmission line (1), and the output end of the single chip microcomputer is further electrically connected with a buzzer.
5. The relay protection debugging method according to claim 1, wherein the data control center (3) comprises a main control computer (31), a fault database (32) and a wireless transmission unit (33), and the wireless communication devices (6), the intelligent terminal (5) and the wireless transmission unit (33) of the main control computer (31) are respectively in 4G network communication connection with a 4G network signal tower (4).
6. The relay protection debugging method according to claim 5, wherein said fault database (32) is used for managing and storing fault elimination confirmation information and fault reason result information of grid cells (11) with corresponding numbers.
7. The relay protection debugging method according to claim 1, wherein the intelligent terminal (5) is a mobile phone, tablet or other intelligent device supporting a 4G network.
8. The relay protection debugging method according to any one of claims 1 to 7, wherein the length of the grid unit (11) is 3-5 km, and the relay protection unit (2) collects the power parameter of the grid unit (11) in real time as current, voltage or frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010399642.9A CN111579921A (en) | 2020-05-13 | 2020-05-13 | Relay protection debugging method |
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