CN104753178A - Power grid fault handling system - Google Patents
Power grid fault handling system Download PDFInfo
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- CN104753178A CN104753178A CN201510179955.2A CN201510179955A CN104753178A CN 104753178 A CN104753178 A CN 104753178A CN 201510179955 A CN201510179955 A CN 201510179955A CN 104753178 A CN104753178 A CN 104753178A
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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
- Y04S10/16—Electric power substations
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Abstract
A power grid fault handling system provides a convenient query method for querying historical data and reproduces historical faults so as to facilitate working personnel in analysis and conclusion of the historical faults. The system provides many humanized designs, clearly expresses fault information of various historical periods when in query of the historical faults and provides very visual analysis results for fault handling personnel and the decision-making level managing massive query content data. The system reminds faults in real time, flexible design can set fault reminders for different circuit management personnel according to different transformer substations and different lines, message reminders are simple and clear in content and notify people in a short message manner, and faults can be accurately handled in real time.
Description
Technical field
The present invention relates to the technical field of electrical network analysis and process, specifically, is a kind of power grid fault treatment system.
Background technology
Compared with other developed country of China and the world, power distribution network development is started late, and development level is lower, builds backwardness relatively, and generating, transmission of electricity, distribution development are coordinated not.This situation seriously constrains the construction and development of distribution network.At present, although China's distribution network obtains certain development, be far from meeting user to the reliability of power supply and quality of power supply requirement, overall development level is relatively backward.Outmoded aging, the problem such as overload, circuit overload, rate of failure are high, poor reliability of ubiquity equipment
Electric network accident management process is extremely complicated, and contain a lot of uncertain factor, current operating analysis software can not provide effective help, is more rely on the experience of dispatcher to make decision-making in-situ.When the grid collapses, require that dispatcher is according to the electric network fault information received, judge fault quickly and accurately, and corresponding treatment measures can be taked, the normal operation of timely recovery electrical network, requires that dispatcher must possess abundant a large amount of power system operation knowwhy and sufficient practical experience.But modern power network
The stability run constantly promotes, and the chance that dispatcher can run into very large electric network fault is very little, is therefore difficult to accumulate abundant operation of power networks practical experience.When grid collapses, only rely on dispatcher oneself handling failure situation, be difficult to the needs meeting power network safety operation.
Summary of the invention
Based on the deficiencies in the prior art, the invention provides a kind of power grid fault treatment system, the model of electrical network forms by with lower part, ground is adjusted and is made up of circuit and plant stand, in circuit, there are line protective devices, line protective devices are made up of line protective device and circuit re-switching equipment, plant stand is divided into the region of different electric pressure by transformer, wherein transformer has protection equipment for transformer, the circuit of each electric pressure has physics bus, generator, load and circuit breaker, physics bus, generator, load and circuit breaker have respective proterctive equipment respectively, can protect each device, protective relaying device can be selected, refer to that one or more proterctive equipment element and logic element are according to together with certain requirement assembled configuration, and complete the device of a certain specific defencive function of electric power system.When in electrical network there are abnormal conditions in the operation of some element; protective relaying device can reflect abnormal work situation to dispatcher timely, or direct Long-distance Control trip operation, excision warping apparatus; reduce the damage of electric component, improve power system power supply reliability simultaneously.
When grid collapses, carry out analyzing and processing by power grid fault treatment system, power grid fault treatment system, by being located at the main website of control centre and being located at the transformer station of its administration and several substations in power plant, is formed by connecting by electric power data communication network network.The main task of system respectively runs factory in collection management electrical network, the protection of standing and the actuating signal of automatic safety device, deciliter signal of circuit breaker, and the recorder data of Microcomputer Protection and fault oscillograph, Trouble Report etc., and carry out comprehensively to these data and signal, statistics, computation and analysis, realize relevant secondary device operational management, the Network Information of monitoring and electric network fault process and intellectuality, for management and running personnel accident treatment provides decision support, for relaying protection professional provides network analysis instrument, for plant maintenance personnel provide unit exception situation information, and provide Data support for other application of electrical network analysis.The main task of substation system is responsible for the information of the microcomputer protecting device, fault oscillograph and other the various intelligent electronic devices that gather in transformer station, and be responsible for being uploaded to main station system after these information norm.Substation system is installed on plant stand scene; adopt distributed frame; generally comprise multiple substation; the collection that generally carried out device in station by a protection manage computer or centralized control center of each substation with communicate, the main task of main station system is that the information uploaded based on substation carries out fault warning, accident analysis, troubleshooting, the filing of information and statistics etc.
Main website can be divided into integrated management function and fault message integrated treatment function two major part, wherein, information comprehensive management module manages when comprising information gathering receiving management, information issuing function management, operational management, parameter management, historical data management, graphical interfaces management, user authority management, GPS couple, and faulted-phase judgment module comprises function of promptly tabulating, waveform analysis function, failure line selection, phase selection, distance measurement function, fault diagnosis functions, behavior evaluation function, decision support function and statistical function.
Information gathering receiving management function is the rule according to presetting; main website is according to certain cycle; or need in real time according to accident treatment, the informations such as the protective device integrated to administrative plant stand and the definite value of fault oscillograph, analog quantity, switching value, protection event, Trouble Report, recorded wave file list and recorded wave file.After collection, by data stored in corresponding history library, by systems soft ware, fault detector, data retransmission station is on the line installed and is arranged on transformer station's (or on circuit) and asymmetric current source is installed forms.When short trouble appears in distribution line, detect that short-circuit current or signal specific electric current flow through, by short-distance wireless receive-transmit system, actuating signal is sent to the data retransmission station being arranged on lines branch place.After data retransmission stands in and receives action message, the indicating device address information of action branch is issued systems soft ware by GPRS.Systems soft ware obtains the laggard row relax of this information, and master station software carries out network topology computational analysis, combines with GIS-Geographic Information System, directly can demonstrate fault point geographical position information, realizes automatic circuit fault location.Master Station Software issues guidance command according to fault message to line switching intelligent controller, makes from the nearest switch separating brake of fault, thus isolated fault, finally interconnection switch is closed a floodgate, realize non-faulting region and restore electricity, complete Fault Isolation and transfer power supply.
Information issuing function: take policy issue to dispatching desk by after fault information analysis process in the fault report information of decision support function block formation, accident analysis conclusion and suggestion, as decision support, provide accident treatment foundation.Adopt Web mode to be distributed to equipment maintenance system the equipment operation exception report that substation active is sent, announcement apparatus maintainer carries out elimination of equipment defect, the normal operation of restorer.
Operational management monitors the real-time communication conditions of main website and substation and each substation internal protection and the communications status between fault oscillograph and substation supervisor and receives and dispatches the specifying information of message.When communicating abnormal, prompting user processes.
Parameter management function realizes managing independently whole system parameter and substation configuration parameter respectively.
System parameter data storehouse comprises following information: the title of various element, electric parameter and other initial parameters in electrical network; Topology information under each system operation mode, element running status (throw/stop state, mutual inductance circuit hangs inspection, the change of transformer grounding mode etc.).Management function realizes the inquiry of component parameters, parameter editor/amendment and user and defines operational mode etc. arbitrarily.
Substation configuration parameter refers to the information of interval that substation termination enters, protective device, oscillograph, comprise each analog quantity,
The definition etc. of sampling/straighforward operation that the definition of the definition of switching value, each protective device action event/alarm event, protection and oscillograph can respond.
Historical data management function mainly realizes substation the inquiry of historical data management and main website historical data management.
Fault data be through after analysis by the equipment Inspection of Distribution Network Failure detection hardware to useful data; Comprise the statistical analysis of fault, the functions such as fault inquiry function, fault recurrence.
Graphical interfaces management, based on main website database one electrical secondary system parameter information, realizes very strong graphical interfaces Presentation Function.Electrical network geographical wiring diagram and each substation main wiring diagram can be shown, and above-mentioned winding diagram can be edited, such as, add, delete, convergent-divergent etc.
User authority management: system also exists catergories of user: management and running personnel, relaying protection personnel, relevant leader, electrical network research and analyse personnel, system manager etc.The different access authority of all types of user can carry out flexible configuration by system manager, and system to browsing data and statistical analysis etc., is all designed with different user right inspections, to ensure the fail safe of system to communication access, data base administration, system maintenance.
During GPS couple, management is by managing the GPS global location clock of system access, for the server of system and work station provide standard clock source, and then for whole subsystems of native system to carry out pair time.
Urgent tabulation function is the fault message bulletin that main website uploads according to certain each substation of information association principle simple syndication; fault type, fault element, switch motion situation and protection act behavior are judged at once; form concise and to the point form, deliver to scheduling picture fast.Dispatch picture to respond on geographical graphic simultaneously, corresponding website is dynamically glimmered, provides voice message etc.
Waveform analysis function analyzes a large amount of fault message of producing in failure process of electrical network, what wherein wave-record chart was complete cover, and electric network fault occurs, development, the overall process of excision and protective device, the startup of fault oscillograph, action, involution and circuit breaker folding process.
Failure line selection can adopt negative phase-sequence than phase algorithm.
Fault Phase Selection can adopt order components phase-comparison method.
Fault localization divides single end distance measurement and both-end distance measuring.
Fault diagnosis functions: after power grid accident, fast quick-recovery normally runs is the necessary condition reducing the power interruptions time and strengthen power supply reliability.As the first step of accident recovery, failure diagnosis fast and accurately should be realized and take corresponding measure to recover electric power supply with isolated fault element.Electric network failure diagnosis mainly carries out analysis to identify fault element to the feature of the electrical quantities measurements such as the event information of protective device generation, the state change information of circuit breaker and electric current and voltage.Fault diagnostic program is the important component part of power grid fault treatment system.
Fault diagnosis flow scheme is as follows
Step one, fault diagnosis system starts
Step 2, a secondary device static information initialization
Step 3, scanning warning message, has judged whether warning message, if had, performs step 4, if not, repeated execution of steps three
Step 4, reads warning message, identification and deletion false alarm information
Step 5, judges whether to there is fault message, if had, performs step 6, if not, returns step 3
Step 6, startup separator is diagnosed, and judges fault message
Step 7, determines fault zone according to fault message
Step 8, progressively scans fault zone, until all faulty equipments in traversal fault zone
Step 9, carries out sampling analysis to all faulty equipments
Step 10, obtains sampling analysis result, existence fault diagnosis report
Action behavior Function of Evaluation: motion analysis module is by dependent failure information; motion analysis is carried out to the switch in the fault message sequence generated after information pre-processing, protective device, according to protecting the primary current voltage waveform of wave-record chart record and evaluating its action situation the setting value of protection, operate time of adjusting.
Decision support function: the topological structure in electrical network is for describing the annexation of electric component.Bus in electrical network is formed by connecting by circuit breaker and switch by many bus elements.The electric component that electrical island in electrical network is connected by some buses and bus again forms.Numerous electrical island is contain in electrical network.Power network topology analysis is exactly the folding condition according to grid disruption road device and switch, rely on specific searching algorithm, as BFS or Depth Priority Algorithm etc., each parent track element is linked to be certain bus, and bus and the electric component that is connected with bus are formed electrical island, carry out network connection analysis.Regard the annexation of electrical network as abstract Points And lines relation, analyze the annexation of network, and determine the electriferous state of network.The acceptor at search suspect device branch road place.After forming the fault section after fault, performed by the accident analysis performed under failed operation, system starts to start backstage failure diagnosis kernel program, in probabilistic situation of the uncertainty considered in information exchanging process and failure process itself, there is in view of information theory the concepts such as condition self information amount and mutual information, and probability theory knowledge can be utilized the advantage of uncertain information precisive, the method for diagnosing faults using expert system and information theory knowledge to combine, carries out accident analysis.Finally determine faulty equipment, generate the strategy that Analysis on Fault Diagnosis reports and recommendations take corresponding action.The content of Trouble Report comprises the fault waveform that the title of circuit or element, fault are separate, switch changed position process condition, each protective device action situation, fault oscillograph or protective device collect; Distance measurement value is provided to line fault; Trouble Report can be sorted out according to key word of the inquiry, as protect types, protection model, protection channel etc.
Statistical function, according to historical data, completes following statistical analysis: fault message statistics, switching value Information Statistics, device action/log-on message statistics, protective device title/type/producer, protection act number of times, performance factor, protection act reason, whether misoperation/refused action protection mistake/tripping reason; Wave recording device title/type/producer, record ripple start reason, whether correct starting rate, error starting/refuse start, whether normal record ripple is.The information such as signal intelligence statistics, communication failure reason.
Electric network failure diagnosis system intelligence handling failure pours in the fault message of control centre when occurring, auxiliary dispatching person determines faulty equipment timely and accurately.This fault diagnosis system comprises two running statuses and is respectively real-time state and research state, and failure diagnosis is divided into the failure diagnosis part under real-time state under failure diagnosis and research state.Under real-time state, real time scan messaging bus, automatically intercepts real-time grid and runs section, when there being fault to occur, according to the action message of the breaker actuation information above sent and protective device and proterctive equipment, carrying out failure diagnosis, providing analysis report.Research state dispatching person can arrange the action message of switch changed position information and protective device and proterctive equipment by hand; simulate the operation of power networks state section under certain failure condition; by perform Analysis on Fault Diagnosis, generate fault diagnosis report, result as fault case stored in knowledge base.This fault diagnosis system can provide more real-time for dispatcher, abundant and intelligentized aid decision support, enables the scheduling decision of electric power system by analytic type to intelligent transformation.
Fault history is that enquiry of historical data provides inquiry mode easily, and can reappear historical failure, is convenient to staff and analyzes historical failure situation, sum up; System provides many human oriented designs, as the history curve of fault statistical graph module, substation fault tabulate statistics are designed to application personnel and provide multiple display modes, the fault message of each period of history is have expressed clearly, for supervisory packet provides analysis result very intuitively containing the fault personnel of a large amount of query contents data and decision-making level when fault history is inquired about; System real time fail is reminded, flexible design can arrange different line management personnel respectively and carry out fault cues according to different substation, different circuit, message notifying content is short and sweet, and can notify people in the mode of note, can promptly and accurately process when ensure that and break down.
Accompanying drawing explanation
Fig. 1 is the troubleshooting process of power grid fault treatment system
Fig. 2 is the fault management content of power grid fault treatment system.
Embodiment
A kind of power grid fault treatment system, the model of electrical network forms by with lower part, ground is adjusted and is made up of circuit and plant stand, in circuit, there are line protective devices, line protective devices are made up of line protective device and circuit re-switching equipment, plant stand is divided into the region of different electric pressure by transformer, wherein transformer has protection equipment for transformer, the circuit of each electric pressure has physics bus, generator, load and circuit breaker, physics bus, generator, load and circuit breaker have respective proterctive equipment respectively, can protect each device, protective relaying device can be selected, refer to that one or more proterctive equipment element and logic element are according to together with certain requirement assembled configuration, and complete the device of a certain specific defencive function of electric power system.When in electrical network there are abnormal conditions in the operation of some element; protective relaying device can reflect abnormal work situation to dispatcher timely, or direct Long-distance Control trip operation, excision warping apparatus; reduce the damage of electric component, improve power system power supply reliability simultaneously.
When grid collapses, carry out analyzing and processing by power grid fault treatment system, power grid fault treatment system, by being located at the main website of control centre and being located at the transformer station of its administration and several substations in power plant, is formed by connecting by electric power data communication network network.The main task of system respectively runs factory in collection management electrical network, the protection of standing and the actuating signal of automatic safety device, deciliter signal of circuit breaker, and the recorder data of Microcomputer Protection and fault oscillograph, Trouble Report etc., and carry out comprehensively to these data and signal, statistics, computation and analysis, realize relevant secondary device operational management, the Network Information of monitoring and electric network fault process and intellectuality, for management and running personnel accident treatment provides decision support, for relaying protection professional provides network analysis instrument, for plant maintenance personnel provide unit exception situation information, and provide Data support for other application of electrical network analysis.The main task of substation system is responsible for the information of the microcomputer protecting device, fault oscillograph and other the various intelligent electronic devices that gather in transformer station, and be responsible for being uploaded to main station system after these information norm.Substation system is installed on plant stand scene; adopt distributed frame; generally comprise multiple substation; the collection that generally carried out device in station by a protection manage computer or centralized control center of each substation with communicate, the main task of main station system is that the information uploaded based on substation carries out fault warning, accident analysis, troubleshooting, the filing of information and statistics etc.
Main website can be divided into integrated management function and fault message integrated treatment function two major part, wherein, information comprehensive management module manages when comprising information gathering receiving management, information issuing function management, operational management, parameter management, historical data management, graphical interfaces management, user authority management, GPS couple, and faulted-phase judgment module comprises function of promptly tabulating, waveform analysis function, failure line selection, phase selection, distance measurement function, fault diagnosis functions, behavior evaluation function, decision support function and statistical function.
As shown in Figure 1; information gathering receiving management function is the rule according to presetting; main website is according to certain cycle; or need in real time according to accident treatment, the informations such as the protective device integrated to administrative plant stand and the definite value of fault oscillograph, analog quantity, switching value, protection event, Trouble Report, recorded wave file list and recorded wave file.After collection, by data stored in corresponding history library, by systems soft ware, fault detector, data retransmission station is on the line installed and is arranged on transformer station's (or on circuit) and asymmetric current source is installed forms.When short trouble appears in distribution line, detect that short-circuit current or signal specific electric current flow through, by short-distance wireless receive-transmit system, actuating signal is sent to the data retransmission station being arranged on lines branch place.After data retransmission stands in and receives action message, the indicating device address information of action branch is issued systems soft ware by GPRS.Systems soft ware obtains the laggard row relax of this information, and master station software carries out network topology computational analysis, combines with GIS-Geographic Information System, directly can demonstrate fault point geographical position information, realizes automatic circuit fault location.Master Station Software issues guidance command according to fault message to line switching intelligent controller, makes from the nearest switch separating brake of fault, thus isolated fault, finally interconnection switch is closed a floodgate, realize non-faulting region and restore electricity, complete Fault Isolation and transfer power supply.
Information issuing function: take policy issue to dispatching desk by after fault information analysis process in the fault report information of decision support function block formation, accident analysis conclusion and suggestion, as decision support, provide accident treatment foundation.Adopt Web mode to be distributed to equipment maintenance system the equipment operation exception report that substation active is sent, announcement apparatus maintainer carries out elimination of equipment defect, the normal operation of restorer.
Operational management monitors the real-time communication conditions of main website and substation and each substation internal protection and the communications status between fault oscillograph and substation supervisor and receives and dispatches the specifying information of message.When communicating abnormal, prompting user processes.
Parameter management function realizes managing independently whole system parameter and substation configuration parameter respectively.
System parameter data storehouse comprises following information: the title of various element, electric parameter and other initial parameters in electrical network; Topology information under each system operation mode, element running status (throw/stop state, mutual inductance circuit hangs inspection, the change of transformer grounding mode etc.).Management function realizes the inquiry of component parameters, parameter editor/amendment and user and defines operational mode etc. arbitrarily.
Substation configuration parameter refers to the information of interval that substation termination enters, protective device, oscillograph, comprise each analog quantity,
The definition etc. of sampling/straighforward operation that the definition of the definition of switching value, each protective device action event/alarm event, protection and oscillograph can respond.
Historical data management function mainly realizes substation the inquiry of historical data management and main website historical data management.
Fault data be through after analysis by the equipment Inspection of Distribution Network Failure detection hardware to useful data; As shown in Figure 2, comprise the statistical analysis of fault, the functions such as fault inquiry function, fault recurrence.
Graphical interfaces management, based on main website database one electrical secondary system parameter information, realizes very strong graphical interfaces Presentation Function.Electrical network geographical wiring diagram and each substation main wiring diagram can be shown, and above-mentioned winding diagram can be edited, such as, add, delete, convergent-divergent etc.
User authority management: system also exists catergories of user: management and running personnel, relaying protection personnel, relevant leader, electrical network research and analyse personnel, system manager etc.The different access authority of all types of user can carry out flexible configuration by system manager, and system to browsing data and statistical analysis etc., is all designed with different user right inspections, to ensure the fail safe of system to communication access, data base administration, system maintenance.
During GPS couple, management is by managing the GPS global location clock of system access, for the server of system and work station provide standard clock source, and then for whole subsystems of native system to carry out pair time.
Urgent tabulation function is the fault message bulletin that main website uploads according to certain each substation of information association principle simple syndication; fault type, fault element, switch motion situation and protection act behavior are judged at once; form concise and to the point form, deliver to scheduling picture fast.Dispatch picture to respond on geographical graphic simultaneously, corresponding website is dynamically glimmered, provides voice message etc.
Waveform analysis function analyzes a large amount of fault message of producing in failure process of electrical network, what wherein wave-record chart was complete cover, and electric network fault occurs, development, the overall process of excision and protective device, the startup of fault oscillograph, action, involution and circuit breaker folding process.
Failure line selection can adopt negative phase-sequence than phase algorithm.
Fault Phase Selection can adopt order components phase-comparison method.
Fault localization divides single end distance measurement and both-end distance measuring.
Fault diagnosis functions: after power grid accident, fast quick-recovery normally runs is the necessary condition reducing the power interruptions time and strengthen power supply reliability.As the first step of accident recovery, failure diagnosis fast and accurately should be realized and take corresponding measure to recover electric power supply with isolated fault element.Electric network failure diagnosis mainly carries out analysis to identify fault element to the feature of the electrical quantities measurements such as the event information of protective device generation, the state change information of circuit breaker and electric current and voltage.Fault diagnostic program is the important component part of power grid fault treatment system.
Fault diagnosis flow scheme is as follows
Step one, fault diagnosis system starts
Step 2, a secondary device static information initialization
Step 3, scanning warning message, has judged whether warning message, if had, performs step 4, if not, repeated execution of steps three
Step 4, reads warning message, identification and deletion false alarm information
Step 5, judges whether to there is fault message, if had, performs step 6, if not, returns step 3
Step 6, startup separator is diagnosed, and judges fault message
Step 7, determines fault zone according to fault message
Step 8, progressively scans fault zone, until all faulty equipments in traversal fault zone
Step 9, carries out sampling analysis to all faulty equipments
Step 10, obtains sampling analysis result, existence fault diagnosis report
Action behavior Function of Evaluation: motion analysis module is by dependent failure information; motion analysis is carried out to the switch in the fault message sequence generated after information pre-processing, protective device, according to protecting the primary current voltage waveform of wave-record chart record and evaluating its action situation the setting value of protection, operate time of adjusting.
Decision support function: the topological structure in electrical network is for describing the annexation of electric component.Bus in electrical network is formed by connecting by circuit breaker and switch by many bus elements.The electric component that electrical island in electrical network is connected by some buses and bus again forms.Numerous electrical island is contain in electrical network.Power network topology analysis is exactly the folding condition according to grid disruption road device and switch, rely on specific searching algorithm, as BFS or Depth Priority Algorithm etc., each parent track element is linked to be certain bus, and bus and the electric component that is connected with bus are formed electrical island, carry out network connection analysis.Regard the annexation of electrical network as abstract Points And lines relation, analyze the annexation of network, and determine the electriferous state of network.The acceptor at search suspect device branch road place.After forming the fault section after fault, performed by the accident analysis performed under failed operation, system starts to start backstage failure diagnosis kernel program, in probabilistic situation of the uncertainty considered in information exchanging process and failure process itself, there is in view of information theory the concepts such as condition self information amount and mutual information, and probability theory knowledge can be utilized the advantage of uncertain information precisive, the method for diagnosing faults using expert system and information theory knowledge to combine, carries out accident analysis.Finally determine faulty equipment, generate the strategy that Analysis on Fault Diagnosis reports and recommendations take corresponding action.The content of Trouble Report comprises the fault waveform that the title of circuit or element, fault are separate, switch changed position process condition, each protective device action situation, fault oscillograph or protective device collect; Distance measurement value is provided to line fault; Trouble Report can be sorted out according to key word of the inquiry, as protect types, protection model, protection channel etc.
Statistical function, according to historical data, completes following statistical analysis: fault message statistics, switching value Information Statistics, device action/log-on message statistics, protective device title/type/producer, protection act number of times, performance factor, protection act reason, whether misoperation/refused action protection mistake/tripping reason; Wave recording device title/type/producer, record ripple start reason, whether correct starting rate, error starting/refuse start, whether normal record ripple is.The information such as signal intelligence statistics, communication failure reason.
Electric network failure diagnosis system intelligence handling failure pours in the fault message of control centre when occurring, auxiliary dispatching person determines faulty equipment timely and accurately.This fault diagnosis system comprises two running statuses and is respectively real-time state and research state, and failure diagnosis is divided into the failure diagnosis part under real-time state under failure diagnosis and research state.Under real-time state, real time scan messaging bus, automatically intercepts real-time grid and runs section, when there being fault to occur, according to the action message of the breaker actuation information above sent and protective device and proterctive equipment, carrying out failure diagnosis, providing analysis report.Research state dispatching person can arrange the action message of switch changed position information and protective device and proterctive equipment by hand; simulate the operation of power networks state section under certain failure condition; by perform Analysis on Fault Diagnosis, generate fault diagnosis report, result as fault case stored in knowledge base.This fault diagnosis system can provide more real-time for dispatcher, abundant and intelligentized aid decision support, enables the scheduling decision of electric power system by analytic type to intelligent transformation.
Fault history is that enquiry of historical data provides inquiry mode easily, and can reappear historical failure, is convenient to staff and analyzes historical failure situation, sum up; System provides many human oriented designs, as the history curve of fault statistical graph module, substation fault tabulate statistics are designed to application personnel and provide multiple display modes, the fault message of each period of history is have expressed clearly, for supervisory packet provides analysis result very intuitively containing the fault personnel of a large amount of query contents data and decision-making level when fault history is inquired about; System real time fail is reminded, flexible design can arrange different line management personnel respectively and carry out fault cues according to different substation, different circuit, message notifying content is short and sweet, and can notify people in the mode of note, can promptly and accurately process when ensure that and break down.
The foregoing is only of the present invention and be preferably not limited to the present invention, obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (6)
1. a power grid fault treatment system, it is characterized in that, the model of electrical network forms by with lower part, ground is adjusted and is made up of circuit and plant stand, in circuit, there are line protective devices, line protective devices are made up of line protective device and circuit re-switching equipment, plant stand is divided into the region of different electric pressure by transformer, wherein transformer has protection equipment for transformer, the circuit of each electric pressure has physics bus, generator, load and circuit breaker, physics bus, generator, load and circuit breaker have respective proterctive equipment respectively, can protect each device.
2. power grid fault treatment system as claimed in claim 1, it is characterized in that, power grid fault treatment system is by being located at the main website of control centre and being located at the transformer station of its administration and several substations in power plant, be formed by connecting by electric power data communication network network, the main task of system respectively runs factory in collection management electrical network, the protection of standing and the actuating signal of automatic safety device, deciliter signal of circuit breaker, and the recorder data of Microcomputer Protection and fault oscillograph, Trouble Report, and carry out comprehensively to these data and signal, statistics, computation and analysis, realize relevant secondary device operational management, the Network Information of monitoring and electric network fault process and intellectuality, for management and running personnel accident treatment provides decision support, the main task of substation system is responsible for gathering the microcomputer protecting device in transformer station, the information of fault oscillograph and other various intelligent electronic devices, and be responsible for being uploaded to main station system after these information norm, substation system is installed on plant stand scene, adopt distributed frame, the collection that carried out device in station by a protection manage computer or centralized control center of each substation with communicate, the main task of main station system is that the information uploaded based on substation carries out fault warning, accident analysis, troubleshooting, the filing of information and statistics.
3. power grid fault treatment system as claimed in claim 2, it is characterized in that, main website can be divided into information comprehensive management function and fault message integrated treatment function two major part, wherein, information comprehensive management module comprises information gathering receiving management, information issuing function manages, operational management, parameter management, historical data management, graphical interfaces manages, user authority management, manage during GPS couple, faulted-phase judgment module comprises function of promptly tabulating, waveform analysis function, failure line selection, phase selection, distance measurement function, fault diagnosis functions, behavior evaluation function, decision support function and statistical function.
4. power grid fault treatment system as claimed in claim 3, it is characterized in that, power grid fault treatment system comprises information gathering receiving management function, for the rule that basis presets, main website is according to certain cycle, or need in real time according to accident treatment, the protective device integrated to administrative plant stand and the definite value of fault oscillograph, analog quantity, switching value, protection event, Trouble Report, recorded wave file list and recorded wave file information, after collection, by data stored in corresponding history library, by systems soft ware, fault detector is on the line installed, data retransmission station and be arranged on transformer station install asymmetric current source composition, when there is short trouble in distribution line, detect that short-circuit current or signal specific electric current flow through, by short-distance wireless receive-transmit system, actuating signal is sent to the data retransmission station being arranged on lines branch place, after data retransmission stands in and receives action message, the indicating device address information of action branch is issued systems soft ware by GPRS, systems soft ware obtains the laggard row relax of this information, master station software carries out network topology computational analysis, combine with GIS-Geographic Information System, directly can demonstrate fault point geographical position information, realize automatic circuit fault location, Master Station Software issues guidance command according to fault message to line switching intelligent controller, make from the nearest switch separating brake of fault, thus isolated fault, finally interconnection switch is closed a floodgate, realize non-faulting region to restore electricity, complete Fault Isolation and transfer power supply,
Information issuing function: take policy issue to dispatching desk in the fault report information of decision support function block formation, accident analysis conclusion and suggestion by after fault information analysis process, as decision support, accident treatment foundation is provided, Web mode is adopted to be distributed to equipment maintenance system the equipment operation exception report that substation active is sent, announcement apparatus maintainer carries out plant maintenance, the normal operation of restorer
Operational management monitors the real-time communication conditions of main website and substation and each substation internal protection and the communications status between fault oscillograph and substation supervisor and receive and dispatch the specifying information of message, when communicating abnormal, points out user to process,
Parameter management function realizes managing independently whole system parameter and substation configuration parameter respectively,
System parameter data storehouse comprises following information: the title of various element, electric parameter and other initial parameters in electrical network; Topology information under each system operation mode, element running status, management function realizes the inquiry of component parameters, parameter editor/amendment and user and defines operational mode arbitrarily,
Substation configuration parameter refers to the information of interval that substation termination enters, protective device, oscillograph; comprise the definition of sampling/straighforward operation that each analog quantity, the definition of switching value, the definition of each protective device action event/alarm event, protection and oscillograph can respond
Historical data management function mainly realizes substation the inquiry of historical data management and main website historical data management,
Fault data be through after analysis by the equipment Inspection of Distribution Network Failure detection hardware to useful data; Comprise the statistical analysis of fault, fault inquiry function, fault recurrence function,
Graphical interfaces management, based on main website database one electrical secondary system parameter information, realizes graphical interfaces Presentation Function, display electrical network geographical wiring diagram and each substation main wiring diagram, and edits above-mentioned winding diagram,
User authority management: system also exists catergories of user: management and running personnel, relaying protection personnel, relevant leader, electrical network research and analyse personnel, system manager; the different access authority of all types of user carries out flexible configuration by system manager; system to communication access, data base administration, system maintenance is to browsing data and statistical analysis; all be designed with different user right inspections; to ensure the fail safe of system
During GPS couple, management is by managing the GPS global location clock of system access, for the server of system and work station provide standard clock source, and then for whole subsystems of native system to carry out pair time.
5. as power grid fault treatment system that claim 4 is stated; it is characterized in that; power grid fault treatment system also comprises function of promptly tabulating; for the fault message bulletin that main website uploads according to certain each substation of information association principle simple syndication; fault type, fault element, switch motion situation and protection act behavior are judged at once; form concise and to the point form; deliver to scheduling picture fast; dispatch picture to respond on geographical graphic simultaneously; corresponding website is dynamically glimmered; provide voice message
Waveform analysis function analyzes a large amount of fault message that electrical network produces in failure process; what wherein wave-record chart was complete cover, and electric network fault occurs, development, the overall process of excision and protective device, the startup of fault oscillograph, action, involution and circuit breaker folding process
Failure line selection adopts negative phase-sequence than phase algorithm,
Fault Phase Selection adopts order components phase-comparison method,
Fault localization divides single end distance measurement and both-end distance measuring.
6. as power grid fault treatment system that claim 5 is stated; it is characterized in that; power grid fault treatment system also comprises fault diagnosis functions: electric network failure diagnosis mainly carries out analysis to identify fault element to event information, the state change information of circuit breaker and the feature of electric current and voltage electrical quantities measurement that protective device produces
Fault diagnosis flow scheme is as follows
Step one, fault diagnosis system starts;
Step 2, a secondary device static information initialization;
Step 3, scanning warning message, has judged whether warning message, if had, performs step 4, if not, repeated execution of steps three;
Step 4, reads warning message, identification and deletion false alarm information;
Step 5, judges whether to there is fault message, if had, performs step 6, if not, returns step 3;
Step 6, startup separator is diagnosed, and judges fault message;
Step 7, determines fault zone according to fault message;
Step 8, progressively scans fault zone, until all faulty equipments in traversal fault zone;
Step 9, carries out sampling analysis to all faulty equipments;
Step 10, obtains sampling analysis result, existence fault diagnosis report;
Action behavior Function of Evaluation: motion analysis module is by dependent failure information; motion analysis is carried out to the switch in the fault message sequence generated after information pre-processing, protective device; according to protecting the primary current voltage waveform of wave-record chart record and evaluating its action situation the setting value of protection, operate time of adjusting
Decision support function: the topological structure in electrical network is for describing the annexation of electric component, power network topology analysis is according to the folding condition of grid disruption road device and switch, rely on specific searching algorithm, each parent track element is linked to be certain bus, and bus and the electric component that is connected with bus are formed electrical island, carry out network connection analysis, analyze the annexation of network, and determine the electriferous state of network, the acceptor at search suspect device branch road place, after forming the fault section after fault, performed by the accident analysis performed under failed operation, system starts to start backstage failure diagnosis kernel program, in probabilistic situation of the uncertainty considered in information exchanging process and failure process itself, in view of information theory has condition self information amount and mutual information concept, and probability theory knowledge can be utilized the advantage of uncertain information precisive, use the method for diagnosing faults that expert system and information theory knowledge combine, carry out accident analysis, finally determine faulty equipment, generate the strategy that Analysis on Fault Diagnosis reports and recommendations take corresponding action, the content of Trouble Report comprises the title of circuit or element, fault is separate, switch changed position process condition, each protective device action situation, the fault waveform that fault oscillograph or protective device collect, distance measurement value is provided to line fault, Trouble Report can be sorted out according to key word of the inquiry, as protect types, protection model, protection channel,
Statistical function, according to historical data, completes following statistical analysis: fault message statistics, switching value Information Statistics, device action/log-on message statistics, protective device title/type/producer, protection act number of times, performance factor, protection act reason, whether misoperation/refused action protection mistake/tripping reason; Wave recording device title/type/producer, record ripple start reason, whether correct starting rate, error starting/refuse start, whether normal record ripple is, and signal intelligence is added up, communication failure cause information,
Electric network failure diagnosis system intelligence handling failure pours in the fault message of control centre when occurring, auxiliary dispatching person determines faulty equipment timely and accurately, this fault diagnosis system comprises two running statuses and is respectively real-time state and research state, failure diagnosis is divided into the failure diagnosis part under real-time state under failure diagnosis and research state, under real-time state, real time scan messaging bus, automatic intercepting real-time grid runs section, when there being fault to occur, according to the action message of the breaker actuation information above sent and protective device and proterctive equipment, carry out failure diagnosis, provide analysis report, research state dispatching person can arrange the action message of switch changed position information and protective device and proterctive equipment by hand, simulate the operation of power networks state section under certain failure condition, by performing Analysis on Fault Diagnosis, generate fault diagnosis report, result as fault case stored in knowledge base, this fault diagnosis system can provide more real-time for dispatcher, enrich and intelligentized aid decision support, enable the scheduling decision of electric power system by analytic type to intelligent transformation.
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