CN110889602B - Relay protection multi-source master station fusion decision rapid support system and method thereof - Google Patents
Relay protection multi-source master station fusion decision rapid support system and method thereof Download PDFInfo
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- CN110889602B CN110889602B CN201911107761.6A CN201911107761A CN110889602B CN 110889602 B CN110889602 B CN 110889602B CN 201911107761 A CN201911107761 A CN 201911107761A CN 110889602 B CN110889602 B CN 110889602B
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- 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
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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Abstract
The invention provides a relay protection multi-source main station fusion decision fast support system and a method thereof, which are based on a wave recording main station on the basis of ensuring the independent operation of three main stations, and integrate the advantages of reliable line fault judgment and good line ranging precision of a traveling wave main station of a communication protection main station by establishing a limited information interaction mechanism, thereby exerting the advantage of quick response of the wave recording main station to line faults to the greatest extent, simultaneously making up short boards with no protection action element information and low ranging precision of wave recording fault analysis reports, finally realizing line fault decision information with high automation degree, reliable line fault judgment and complete analysis report contents facing to a relay protection mechanism, and having the capability of replacing the personnel assistant decision process of the relay protection mechanism and directly facing to a direct decision of a regulation and control mechanism.
Description
Technical Field
The invention relates to the field of relay protection, in particular to a relay protection multi-source main station fusion decision rapid support system and a method thereof.
Background
95% of faults of a power grid occur in a power transmission line, after the power transmission line fails, fault line patrol is a necessary means for finding out the position and the reason of the fault, and for the power transmission line with a three-phase fault, unsuccessful reclosing or failure of forced delivery, a fault point and a fault reason need to be found out through line patrol, so that the condition that the line continues to operate is ensured, and a line power restoration instruction can be sent out by a regulation and control mechanism personnel. Therefore, the method and the device can quickly identify the fault type after the power transmission line has a fault, position the fault point, provide timely and accurate guidance for line patrol work, and provide a decision for a regulation and control mechanism by a relay protection mechanism personnel.
Wherein, the relay protection mechanism is responsible for providing auxiliary decision for the regulation mechanism. As shown in fig. 1, the existing relay protection mechanism decision means mainly depends on three main station systems of a wave recording main station, a signal protection main station and a traveling wave main station, and is respectively responsible for collecting wave recording information, protection action information and traveling wave ranging information, and collecting the information to the relay protection mechanism, and personnel of the relay protection mechanism collects, sorts and analyzes the information of the three main station systems to form a relay protection auxiliary decision, and provides support for a regulation and control mechanism. Wherein, three main station systems operate independently, and are administrative respectively. However, manual intervention is high in the process of generating the relay protection aid decision. Therefore, in order to solve the problems, the invention provides a relay protection multi-source main station fusion decision fast support system and a method thereof, which have the advantages that a wave recording main station has fast response to line faults, the judgment of the signal protection main station has reliable line faults, and the line ranging precision of the traveling wave main station is good, so that the system information summarization and secondary decision of relay protection organization personnel on three main stations are not needed, the decision time is shortened, the personnel reduction and the efficiency improvement are realized, and the relay protection intelligent level is improved.
Disclosure of Invention
In view of the above, the invention provides a relay protection multi-source master station fusion decision fast support system and a method thereof, which integrate the advantages of fast response of a wave recording master station to line faults, reliable judgment of line faults of a signal protection master station and good line ranging precision of a traveling wave master station, and no need of relay protection organization personnel to gather information and make secondary decisions of three master station systems, thereby shortening decision time, realizing personnel reduction and efficiency improvement and improving the intelligence level of relay protection.
The technical scheme of the invention is realized as follows: on one hand, the invention provides a relay protection multi-source master station fusion decision rapid support method, which comprises the following steps:
s1, when the line has a fault, the information protection master station sends a protection fault analysis report with protection action element information to the wave recording master station;
s2, the wave recording master station receives the protection fault analysis report, integrates the protection action element information into the wave recording fault analysis report generated by the wave recording master station, extracts a fault brief report comprising fault time, a fault line name and characteristic quantity with an initial wave head from the wave recording fault analysis report, and sends the fault brief report to the traveling wave master station to request traveling wave distance measurement;
s3, after receiving the traveling wave ranging request of the wave recording master station, the traveling wave master station carries out traveling wave ranging based on the initial wave head and returns the ranging result to the wave recording master station;
and S4, the traveling wave ranging result is used by the wave recording master station to correct the line ranging result in the wave recording fault analysis report, and the corrected wave recording fault analysis report is sent to a regulation and control mechanism.
On the basis of the technical scheme, preferably, a plurality of wave recording devices are hung below the wave recording master station; a plurality of protection devices are hung under the information protection master station, and when a line fails, the protection devices send tripping commands to the circuit breakers controlled by the protection devices; a plurality of traveling wave devices are hung under the traveling wave master station;
the recording fault analysis report comprises a fault line name, a fault moment, a fault type, a trip moment, a coincidence moment, a fault distance measurement, change conditions of related voltage and current before and after a fault, a protection total action outlet and a breaker position change;
when the protection total action outlet is a line fault, the signal protection device gives a tripping instruction to the circuit breaker and gives a wave recording device through a hard node signal;
the initial wave head characteristic quantity comprises a peak value, a valid value and a fault duration.
Further preferably, the protection fault analysis report includes the entire contents of the recording fault analysis report and information of the protection operation element inside the protection device;
the protection action element information includes: when the line is in fault, the protection model, the name, the function classification, the action time and the action condition of an action element in the protection device are determined; and the protection action element information is provided to the information protection master station in a communication message SOE mode.
On the basis of the above technical solution, preferably, before S1, the method further includes the following steps:
s101, a wave recording master station collects disturbance information, carries out fault analysis according to the disturbance information, and generates a wave recording fault analysis report when judging that the disturbance information is fault information;
s102, extracting a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from a wave recording fault analysis report, and sending the fault brief report to a message protecting main station to carry out a fault verification request;
s103, after receiving the wave recording master station fault checking request, the information protecting master station compares the fault checking request with a protection fault analysis report cache report which is arranged by the information protecting master station, and the protection fault analysis report requested by the wave recording master station is matched in the cache report;
if the matching fault analysis report is successful, the information protection master station sends a confirmation report to the wave recording master station, and the confirmation report comprises a protection fault analysis report selected after the matching is successful;
if the matching fault analysis report fails, the wave recording master station sends a denial report to the signal protection master station, wherein the denial report does not contain any protection fault analysis report;
s104, if the wave recording master station receives the negative report, judging that the fault of the wave recording master station is misjudged, and giving up the wave recording fault analysis report requesting verification;
if the wave recording master station receives the confirmation report and judges that the fault judgment of the wave recording master station is correct, comparing a protection fault analysis report confirmed by the information protection master station with a fault wave recording analysis report requesting verification, and if no difference exists, supplementing protection action element information in the protection fault analysis report into the wave recording fault analysis report to finish report confirmation; if the difference is found after comparison, correcting the recording fault analysis report by the content in the protection fault analysis report, and simultaneously supplementing the information of the protection action element to finish the correction of the report;
if the protection fault analysis report is arranged in the cache report by the information protection main station, the fault check request of the wave recording main station is not received within preset time, the failure judgment of the wave recording main station is judged, the protection fault analysis report is actively pushed to the wave recording main station, and the protection fault analysis report is directly processed into the wave recording fault analysis report after the wave recording main station receives the protection fault analysis report, and the fault check request does not need to be sent to the information protection main station system.
Further preferably, the matching means in S103 includes a time correlation method based on the failure time, or an initial wave head feature quantity comparison method.
Further preferably, the time-dependent method comprises the following specific steps: taking the fault time given by the wave recording master station as a reference, relaxing the fault time for 15 seconds in the forward and backward directions respectively, generating a comparison time window, searching a protection fault analysis report in the cache report of the information-protecting master station in the time window, and if a unique report is found, successfully matching; otherwise, the report is continuously searched by adopting a characteristic quantity comparison mode.
Further preferably, the initial wave head characteristic quantity comparison method specifically includes the steps of:
s201, taking the fault time given by the wave recording master station as a reference, and relaxing the fault time for 30 minutes forwards and backwards respectively to generate a comparison time window;
s202, in a time window, if no report exists in the information-guaranteeing master station cache report, matching fails;
in the time window, if a single report exists in the message protection master station cache report, the report is compared with the initial wave head characteristic quantity in the fault brief report provided by the wave recording master station in detail, the comparison object comprises a peak value, an effective value, fault duration, starting time and resetting time of a protection total action exit, if all the approximation degrees are matched, the matching is successful, the protection fault analysis report of the message protection master station is selected, otherwise, the matching is failed;
and in the time window, if a plurality of reports exist in the message-protecting main station cache reports, performing detailed comparison on all the reports one by one with initial wave head characteristic quantities in the fault brief report provided by the wave-recording main station, wherein the comparison objects comprise peak values, effective values, fault duration, starting time and resetting time of protecting total action outlets, after the comparison of the plurality of reports is completed, if all the approximation degrees are not matched, failure is allocated, otherwise, a protection fault analysis report with the most matched approximation degree is selected, and the matching is successful.
On the basis of the above technical solution, preferably, S3 specifically includes the following steps:
s301, after receiving a traveling wave distance measurement request of a wave recording master station, a traveling wave master station calls all traveling wave data generated by a traveling wave device configured by a fault line within 15 seconds before and after a fault moment to the traveling wave master station, the traveling wave master station matches the traveling wave data according to a fault brief report, if the approximation degree is consistent, an initial wave head of the traveling wave data is successfully matched, the traveling wave master station carries out traveling wave distance measurement based on the initial wave head, a distance measurement result is returned to the wave recording master station, and meanwhile a success indication signal is returned; if the approximation degrees are not matched, the initial wave head matched with the traveling wave data fails, the traveling wave master station returns an unsuccessful indication signal to the wave recording master station, and a traveling wave ranging result is not provided;
s302, after the wave recording master station receives the indication signal of the traveling wave master station, if the indication is successful, the traveling wave ranging result is used for correcting the line ranging result in the wave recording fault analysis report; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
Further preferably, the step of matching the traveling wave master station with the traveling wave data according to the fault brief report in S301 specifically includes the following steps:
according to the line name in the fault brief report, based on the fault time, widening 15 seconds before and after, generating a comparison time window, calling all traveling wave data generated by a traveling wave device configured by the fault line in 15 seconds before and after the fault time to a traveling wave main station in the time window, calculating characteristic quantities of a peak value, an effective value and fault duration time for an initial wave head of the traveling wave data by the traveling wave main station, and comparing the characteristic quantities with the characteristic quantities provided in the request command.
On the other hand, the invention provides a relay protection multi-source main station fusion decision fast support system, which comprises a wave recording main station, a signal protection main station and a traveling wave main station, wherein a plurality of wave recording devices are hung below the wave recording main station, a plurality of protection devices are hung below the signal protection main station, and a plurality of traveling wave devices are hung below the traveling wave main station, and the system is characterized in that: the wave recording master station comprises a disturbance data sorting module, a first interaction module, a first correction module and a second correction module; the information protection main station comprises a fault data sorting module and a second interaction module; the traveling wave master station comprises a third interaction module;
the wave recording device is used for sending the disturbance information to the disturbance data sorting module to analyze the disturbance information, wherein the disturbance information comprises fault information and non-fault information;
the disturbance data sorting module analyzes and judges whether the disturbance information is fault information, and when the disturbance information is judged to be non-fault information, the non-fault information is recorded; when the fault information is judged, generating a wave recording fault analysis report according to the fault information, and sending the wave recording fault analysis report to the first interaction module for caching;
the first interaction module extracts a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from the wave recording fault analysis report and sends the fault brief report to the second interaction module to carry out a fault verification request;
the fault data sorting module generates a protection fault analysis report according to fault information generated by the protection device when the line has a fault, and sends the protection fault analysis report to the second interaction module for caching;
the second interaction module compares the fault verification request sent by the first interaction module with a buffer report of the protection fault analysis report arranged by the second interaction module, and matches the protection fault analysis report requested by the first interaction module in the buffer report; if the matching fault analysis report is successful, the second interaction module sends a confirmation report to the first correction module, and the confirmation report comprises a protection fault analysis report selected after the matching is successful; if the matching fault analysis report fails, the second interaction module sends a denial report to the first correction module, wherein the denial report does not contain any protection fault analysis report;
the first correction module is used for receiving the confirmation report or the denial report sent by the protection fault analysis report interaction module, supplementing the protection fault analysis report in the confirmation report into the wave recording fault analysis report if the confirmation report is received, and sending the supplemented wave recording fault analysis report to the first interaction module; and if the negative report is received, judging that the fault of the wave recording main station is misjudged, and giving up the wave recording fault analysis report requesting verification.
After the first interaction module receives the recording fault analysis report supplemented by the first correction module, a fault brief report containing fault time, a fault line name and characteristic quantity with an initial wave head is extracted from the recording fault analysis report and sent to a third interaction module, the third interaction module searches corresponding traveling wave data in a traveling wave device according to the fault brief report, matches the traveling wave data with the fault brief report, if the approximation degree is consistent, the initial wave head matching of the traveling wave data is successful, the third interaction module carries out traveling wave distance measurement based on the initial wave head, and returns a distance measurement result to the second correction module and returns a success indication signal; if the approximation degrees are not matched, the initial wave head of the traveling wave data is failed to be matched, the third interaction module returns an unsuccessful indication signal to the second correction module, and the traveling wave ranging result is not provided;
after the second correction module receives the indication signal of the third interaction module, if the indication is successful, the line ranging result in the wave recording fault analysis report is corrected by using the traveling wave ranging result, and the corrected wave recording fault analysis report is sent to the first interaction module; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
Compared with the prior art, the relay protection multi-source master station fusion decision rapid support system and the method thereof have the following beneficial effects:
(1) on the basis of ensuring the independent operation of the three main stations, the method is based on the wave recording main station, combines the advantages of reliable line fault judgment of the signal protection main station and good line ranging precision of the traveling wave main station by establishing a limited information interaction mechanism, gives full play to the advantage that the wave recording main station can react to the line fault quickly, simultaneously makes up short boards with low ranging precision and lacking protection action element information of a wave recording fault analysis report, finally realizes line fault decision information with high automation degree, reliable line fault judgment and complete analysis report content facing to a relay protection mechanism, and has the capacity of replacing personnel auxiliary decision process of the relay protection mechanism and directly facing to direct decision of a regulation and control mechanism;
(2) the system implementation method has the advantages that on the basis that timeliness is not reduced, reliability of line fault judgment, accuracy of fault location indexes and integrity of line fault analysis are improved in an all-round mode, relay protection organization personnel do not need to collect information of three main station systems and make secondary decisions, decision time is shortened, personnel reduction and efficiency improvement are achieved, and relay protection intelligence level is improved;
(3) the wave recording master station completes the confirmation and correction of a wave recording fault analysis report with the help of the information master station, supplements protection action element information, eliminates the possibility of misjudgment and missed judgment of line faults, and has the capabilities of reliably analyzing the line faults and automatically outputting decisions to a regulation and control mechanism;
(4) the wave recording master station confirms and corrects the fault location result of the line through the signal protection master station and the traveling wave master station, so that automatic, reliable and accurate decision information is generated, and the decision information can be directly submitted to a regulation and control mechanism without intervention of a relay protection mechanism.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional relay protection system;
FIG. 2 is a graph of an original recording of a fault;
FIG. 3 is a schematic diagram of information interaction and operation between a wave recording master station and a message protection master station in a conventional relay protection system;
FIG. 4 is a fusion decision processing process diagram of the relay protection multi-source master station fusion decision fast support method of the invention;
FIG. 5 is a flow chart of information interaction starting by a wave recording master station in the relay protection multi-source master station fusion decision fast support system of the invention;
FIG. 6 is a flow chart of a communication master station starting information interaction in the relay protection multi-source master station fusion decision fast support system;
fig. 7 is a structural diagram of a relay protection multi-source master station fusion decision fast support system of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
As shown in fig. 4, the method for quickly supporting the relay protection multi-source master station fusion decision includes the following steps:
s1, when the line has a fault, the information protection master station sends a protection fault analysis report with protection action element information to the wave recording master station;
s2, the wave recording master station receives the protection fault analysis report, integrates the protection action element information into the wave recording fault analysis report generated by the wave recording master station, extracts a fault brief report comprising fault time, a fault line name and characteristic quantity with an initial wave head from the wave recording fault analysis report, and sends the fault brief report to the traveling wave master station to request traveling wave distance measurement;
s3, after receiving the traveling wave ranging request of the wave recording master station, the traveling wave master station carries out traveling wave ranging based on the initial wave head and returns the ranging result to the wave recording master station;
and S4, the traveling wave ranging result is used by the wave recording master station to correct the line ranging result in the wave recording fault analysis report, and the corrected wave recording fault analysis report is sent to a regulation and control mechanism.
As shown in fig. 4, a plurality of wave recording devices are hung on the wave recording master station, the wave recording devices collect disturbance information on a line, the disturbance information includes fault information and non-fault information, and the disturbance information is sent to the wave recording master station, the wave recording master station judges whether the disturbance information is fault information according to the analysis of the disturbance information, and when the disturbance information is judged to be non-fault information, the wave recording master station records the non-fault information; and when the fault information is judged, generating a wave recording fault analysis report according to the fault information.
The protection fault analysis report is collected and arranged into a protection fault analysis report through the protection device, and the protection device sends the protection fault analysis report to the protection main station for caching. The traveling wave master station is hung with a plurality of traveling wave devices, and the traveling wave devices are arranged in the substation side transformer substation, record traveling wave data and store the traveling wave data in the traveling wave devices.
Wherein, the wave recording master station compares the letter master station, has following advantage:
(1) as shown in fig. 3, the recording master station provides the original recording data of the line disturbance with fault and non-fault, while the protection master station can only provide the original recording data at the time of fault. In other words, the original recording data provided by the information-guaranteeing main station is a subset of the original recording data provided by the recording main station (the fault data portion in the disturbance data);
(2) the starting sensitivity of the wave recording master station to the line disturbance is higher than that of the information protection master station, but the judgment reliability of the line fault is lower than that of the information protection master station. When acquiring a recording fault analysis report, relay protection mechanism personnel need to confirm through observing relevant information of the information protection master station;
(3) the wave recording main station and the information protection main station can provide line fault analysis reports with similar contents, and the differences are that: as shown in fig. 3, the recording fault analysis report provided by the recording master station can only give protection total action exit information, and the protection fault analysis report provided by the protection master station can give more detailed protection action element information inside the protection device;
(4) the wave recording main station and the information protection main station have data homology and algorithm homology to the line fault, high matching degree and easy mutual verification. The wave recording master station has the advantages of quicker response to line faults, more reliable transmission and stronger timeliness, and is easy to provide qualitative auxiliary decision support for a relay protection mechanism at the first time.
The wave recording master station has the following advantages compared with the traveling wave master station:
(1) the traveling wave master station has stronger sensitivity to line disturbance and higher sampling rate, data is characterized by being intensive, fragmented and massive, and the traveling wave master station cannot receive each recorded wave data to the master station end and then perform local analysis one by one like the recorded wave master station. Therefore, the traveling wave master station does not have the capability of automatically judging the initial wave head, but the wave recording master station can;
(2) the automation degree of the data retrieval of the traveling wave master station is far lower than that of the wave recording master station. The traveling wave master station is difficult to automatically acquire accurate data of the plant station side through self capacity, mainly depends on manual intervention, reduces the query range, manually extracts the data to the master station end, and then carries out manual traveling wave ranging.
(3) The traveling wave master station has weak sensing capability to line faults, and the wave recording master station is extremely strong in the aspect.
In conclusion, the wave recording master station has the following advantages compared with the information protection master station and the traveling wave master station:
(1) and (4) the timeliness is superior. All disturbances include fault and non-fault data, and the wave recording master station can automatically upload to the master station in the first time. The information-protecting master station and the traveling wave master station are influenced by factors such as modeling complexity and data massiveness, the effect of remotely acquiring data is poor, the manual dependence is high, and the time consumption is long;
(2) the autonomous analysis capability is strong. And the wave recording master station autonomously analyzes, judges the line fault and generates a wave recording fault analysis report by completely copying the original data of the remote wave recorder. The main trust station does not have the ability of self-analyzing the fault, and only depends on the on-site fault report of the protection device in the plant station, and the uncontrollable factors are more. The traveling wave master station does not have the capability of actively identifying and calling fault data of the traveling wave device in the station, and the capability of autonomous analysis is lost.
(3) In a conventional mode, the recording file records single disturbance for 3s, the file size is 0.5MB, the traveling wave file records single disturbance for 4ms, the file size is 15MB, and the traveling wave data file has the characteristics of densification, fragmentation and sea quantization and is not suitable for automatic processing of a master station. And the signal protection main station only reacts when the fault occurs, so that the risk of omission exists, and the monitoring and the evaluation of the line state in a non-fault time period are not facilitated.
Therefore, in this embodiment, the recording master station is used as the master system.
Further preferably, as shown in fig. 2, the recording fault analysis report includes a fault line name, a fault time, a fault type, a trip time, a coincidence time, a fault location, and a change condition of related voltage and current before and after the fault, a protection total action exit, and a circuit breaker position change;
when the protection total action outlet is a line fault, the protection device gives a tripping instruction to the circuit breaker and gives a wave recording device through a hard node signal;
the initial wave head characteristic quantity comprises a peak value, a valid value and a fault duration.
Further preferably, the protection fault analysis report includes the entire contents of the recording fault analysis report and information of the protection operation element inside the protection device;
the protection action element information includes: when the line is in fault, the protection model, the name, the function classification, the action time and the action condition of an action element in the protection device are determined; and the protection action element information is provided to the information protection master station in a communication message SOE mode.
The beneficial effect of this embodiment does: on the basis of ensuring the independent operation of the three main stations, the method is based on the wave recording main station, combines the advantages of reliable line fault judgment of the signal protection main station and good line ranging precision of the traveling wave main station by establishing a limited information interaction mechanism, gives full play to the advantage that the wave recording main station can react to the line fault quickly, simultaneously makes up short boards with low ranging precision and lacking protection action element information of a wave recording fault analysis report, finally realizes line fault decision information with high automation degree, reliable line fault judgment and complete analysis report content facing to a relay protection mechanism, and has the capability of directly replacing personnel assistant decision process of the relay protection mechanism and directly facing to a direct decision of a regulation mechanism;
the method for realizing the system improves the reliability of line fault judgment, the accuracy of fault distance measurement indexes and the integrity of line fault analysis in all directions on the basis of not reducing the timeliness, and no relay protection organization personnel are needed to collect and make secondary decisions on the system information of the three main stations, so that the decision time is shortened, the personnel reduction and the efficiency improvement are realized, and the relay protection intelligence level is improved.
Example 2
On the basis of embodiment 1, this embodiment provides a specific information interaction mechanism between the wave recording master station and the information protection master station, fig. 5 is a flowchart of information interaction started by the wave recording master station first, and fig. 6 is a flowchart of information interaction started by the information protection master station first, and the process and principle are the same, so only the flowchart of information interaction started by the wave recording master station first is described here, which specifically includes the following steps:
s101, a wave recording master station collects disturbance information, carries out fault analysis according to the disturbance information, and generates a wave recording fault analysis report when judging that the disturbance information is fault information;
s102, extracting a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from a wave recording fault analysis report, and sending the fault brief report to a message protecting main station to carry out a fault verification request;
s103, after receiving the wave recording master station fault checking request, the information protecting master station compares the fault checking request with a protection fault analysis report cache report which is arranged by the information protecting master station, and the protection fault analysis report requested by the wave recording master station is matched in the cache report;
if the matching fault analysis report is successful, the information protection master station sends a confirmation report to the wave recording master station, and the confirmation report comprises a protection fault analysis report selected after the matching is successful;
if the matching fault analysis report fails, the wave recording master station sends a denial report to the signal protection master station, wherein the denial report does not contain any protection fault analysis report;
s104, if the wave recording master station receives the negative report, judging that the fault of the wave recording master station is misjudged, and giving up the wave recording fault analysis report requesting verification;
if the wave recording master station receives the confirmation report and judges that the fault judgment of the wave recording master station is correct, comparing a protection fault analysis report confirmed by the information protection master station with a fault wave recording analysis report requesting verification, and if no difference exists, supplementing protection action element information in the protection fault analysis report into the wave recording fault analysis report to finish report confirmation; if the difference is found after comparison, correcting the recording fault analysis report by the content in the protection fault analysis report, and simultaneously supplementing the information of the protection action element to finish the correction of the report;
if the protection fault analysis report is arranged in the cache report by the information protection main station, the fault check request of the wave recording main station is not received within preset time, the failure judgment of the wave recording main station is judged, the protection fault analysis report is actively pushed to the wave recording main station, and the protection fault analysis report is directly processed into the wave recording fault analysis report after the wave recording main station receives the protection fault analysis report, and the fault check request does not need to be sent to the information protection main station system.
Wherein the predetermined time may be 5 minutes.
The beneficial effect of this embodiment does: after the steps, the wave recording master station completes the confirmation and correction of the wave recording fault analysis report with the help of the information master station, supplements the information of the protective action element, eliminates the possibility of misjudgment and missed judgment of the line fault, and has the capabilities of reliably analyzing the line fault and automatically outputting a decision to a regulation and control mechanism.
Example 3
On the basis of embodiment 2, this embodiment provides a method for matching data of a recording master station and a communication-protecting master station when information interaction is performed between the two master stations. The matching means in this embodiment includes a time correlation method based on the failure time, or an initial wave head characteristic quantity comparison method.
Further preferably, the time-dependent method comprises the following specific steps: taking the fault time given by the wave recording master station as a reference, relaxing the fault time for 15 seconds in the forward and backward directions respectively, generating a comparison time window, searching a protection fault analysis report in the cache report of the information-protecting master station in the time window, and if a unique report is found, successfully matching; otherwise, the report is continuously searched by adopting a characteristic quantity comparison mode.
Further preferably, the initial wave head characteristic quantity comparison method specifically includes the steps of:
s201, taking the fault time given by the wave recording master station as a reference, and relaxing the fault time for 30 minutes forwards and backwards respectively to generate a comparison time window;
s202, in a time window, if no report exists in the information-guaranteeing master station cache report, matching fails;
in the time window, if a single report exists in the message protection master station cache report, the report is compared with the initial wave head characteristic quantity in the fault brief report provided by the wave recording master station in detail, the comparison object comprises a peak value, an effective value, fault duration, starting time and resetting time of a protection total action exit, if all the approximation degrees are matched, the matching is successful, the protection fault analysis report of the message protection master station is selected, otherwise, the matching is failed;
and in the time window, the message protection main station caches a plurality of reports, all the reports are compared with the initial wave head characteristic quantity in the fault brief report provided by the wave recording main station one by one in a detailed manner, the comparison objects comprise a peak value, an effective value, a fault duration, and the starting time and the resetting time of the protection total action exit, after the comparison of the reports is completed, if all the approximations are not consistent, the matching fails, otherwise, the protection fault analysis report with the most consistent approximation is selected, and the matching succeeds.
The beneficial effect of this embodiment does: in the information interaction process of the wave recording main station and the information protection main station, a time correlation mode based on fault time or an initial wave head characteristic quantity comparison mode is adopted, a protection fault analysis report of the fault main station requesting verification is searched from the information protection main station, the fault time of the wave recording main station requesting verification is ensured to be consistent with a waveform and the protection fault analysis report stored in the information protection main station, and the problem that the fault judgment is incorrect due to unsuccessful matching is solved.
Example 4
On the basis of embodiment 2, the wave recording master station confirms and corrects through the information-protecting master station, supplements protection action element information, basically confirms that a fault occurs, and protects the protection action element information of a protection device, and at the moment, the specific position of the fault needs to be determined. Therefore, the embodiment provides a specific information interaction mechanism between the wave recording master station and the traveling wave master station, and the specific position of the fault is obtained through information interaction with the traveling wave master station. As shown in fig. 4 and 5, the method specifically includes the following steps:
s301, extracting fault brief reports including fault time, fault line name and characteristic quantity with initial wave head from a wave recording fault analysis report, sending the fault brief reports to a traveling wave master station, and requesting traveling wave distance measurement;
s302, after the traveling wave master station receives a traveling wave distance measurement request of the wave recording master station, calling all traveling wave data generated by a traveling wave device configured by a fault line within 15 seconds before and after a fault moment to the traveling wave master station, matching the traveling wave master station with the traveling wave data according to a fault brief report, if the approximation degree is consistent, successfully matching an initial wave head of the traveling wave data, carrying out traveling wave distance measurement by the traveling wave master station based on the initial wave head, returning a distance measurement result to the wave recording master station, and simultaneously returning a success indication signal; if the approximation degrees are not matched, the initial wave head matched with the traveling wave data fails, the traveling wave master station returns an unsuccessful indication signal to the wave recording master station, and a traveling wave ranging result is not provided;
s303, after the wave recording master station receives the indication signal of the traveling wave master station, if the indication is successful, correcting the line ranging result in the wave recording fault analysis report by using the traveling wave ranging result; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
The step S202 of matching the traveling wave master station with the traveling wave data according to the fault brief report specifically comprises the following steps:
according to the line name in the fault brief report, based on the fault time, widening 15 seconds before and after, generating a comparison time window, calling all traveling wave data generated by a traveling wave device configured by the fault line in 15 seconds before and after the fault time to a traveling wave main station in the time window, calculating characteristic quantities of a peak value, an effective value and fault duration time for an initial wave head of the traveling wave data by the traveling wave main station, and comparing the characteristic quantities with the characteristic quantities provided in the request command.
The beneficial effect of this embodiment does: through the steps, the wave recording master station completes the correction of the line ranging result of the wave recording fault analysis report. The wave recording master station confirms and corrects the fault location result of the line through the signal protection master station and the traveling wave master station, so that automatic, reliable and accurate decision information is generated, and the decision information can be directly submitted to a regulation and control mechanism without intervention of a relay protection mechanism.
Example 5
On the basis of any one of embodiments 1 to 4, as shown in fig. 7, the present embodiment provides a relay protection multi-source master station fusion decision fast support system, which includes a wave recording master station, a communication protection master station, and a traveling wave master station.
And a plurality of wave recording devices are hung below the wave recording master station. The wave recording device collects disturbance information on a line, wherein the disturbance information comprises fault information and non-fault information, and sends the disturbance information to the wave recording master station.
And a plurality of protection devices are hung below the information protection main station. When a line breaks down, the protection device acts, generates fault data, communicates, collects and arranges the fault data into a protection fault analysis report through the protection device, and sends the protection fault analysis report to the information protection main station for caching.
And a plurality of traveling wave devices are hung under the traveling wave master station. The traveling wave device is arranged in a substation side transformer substation, records traveling wave data and stores the traveling wave data in the traveling wave device.
The wave recording master station comprises a disturbance data sorting module, a first interaction module, a first correction module and a second correction module; the information protection main station comprises a fault data sorting module and a second interaction module; the traveling wave master station comprises a third interaction module.
The wave recording device is used for sending the disturbance information to the disturbance data sorting module to analyze the disturbance information, judging whether the disturbance information is fault information or not, and recording non-fault information when the disturbance information is judged to be non-fault information; when the fault information is judged, generating a wave recording fault analysis report according to the fault information, and sending the wave recording fault analysis report to the first interaction module for caching;
the first interaction module extracts a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from the wave recording fault analysis report and sends the fault brief report to the second interaction module to carry out a fault verification request;
the protection device acts when a line fails, generates fault data and uploads the fault data to the fault data arrangement module;
the fault data sorting module generates a protection fault analysis report according to the fault information when the line has a fault, and sends the protection fault analysis report to the second interaction module for caching;
the second interaction module compares the fault verification request sent by the first interaction module with a buffer report of the protection fault analysis report arranged by the second interaction module, and matches the protection fault analysis report requested by the first interaction module in the buffer report; if the matching fault analysis report is successful, the second interaction module sends a confirmation report to the first correction module, and the confirmation report comprises a protection fault analysis report selected after the matching is successful; if the matching fault analysis report fails, the second interaction module sends a denial report to the first correction module, wherein the denial report does not contain any protection fault analysis report;
the first correction module is used for receiving the confirmation report or the denial report sent by the protection fault analysis report interaction module, supplementing the protection fault analysis report in the confirmation report into the wave recording fault analysis report if the confirmation report is received, and sending the supplemented wave recording fault analysis report to the first interaction module; if the negative report is received, judging that the fault of the wave recording main station is misjudged, and giving up the wave recording fault analysis report requesting verification;
after the first interaction module receives the wave recording fault analysis report supplemented by the first correction module, extracting a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from the wave recording fault analysis report and sending the fault brief report to a third interaction module;
the third interaction module searches corresponding traveling wave data in the traveling wave device according to the fault brief report, matches the traveling wave data according to the fault brief report, if the approximation degree is consistent, the initial wave head of the traveling wave data is successfully matched, the third interaction module carries out traveling wave distance measurement based on the initial wave head, and returns the distance measurement result to the second correction module and simultaneously returns a success indication signal; if the approximation degrees are not matched, the initial wave head of the traveling wave data is failed to be matched, the third interaction module returns an unsuccessful indication signal to the second correction module, and the traveling wave ranging result is not provided;
the second correction module is used for correcting the line ranging result in the wave recording fault analysis report by using the traveling wave ranging result and sending the corrected wave recording fault analysis report to the first interaction module after receiving the indication signal of the third interaction module and if the indication is successful; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
The beneficial effect of this embodiment does: the system integrates the wave recording master station, the information protection master station and the traveling wave master station into a system, is based on the wave recording master station on the basis of ensuring the independent operation of the three master stations, integrates the advantages of reliable line fault judgment and good line ranging precision of the traveling wave master station by establishing a limited information interaction mechanism, gives play to the advantage that the wave recording master station can react to line faults quickly to the greatest extent, simultaneously makes up short boards with low ranging precision and lacking protection action element information of wave recording fault analysis reports, finally realizes line fault decision information with high automation degree, reliable line fault judgment and complete analysis report content facing to a relay protection mechanism, has the capacity of replacing personnel of the relay protection mechanism to assist in a decision process and directly facing to a regulation and control mechanism to make decisions;
the method for realizing the system improves the reliability of line fault judgment, the accuracy of fault distance measurement indexes and the integrity of line fault analysis in all directions on the basis of not reducing the timeliness, and no relay protection organization personnel are needed to collect and make secondary decisions on the system information of the three main stations, so that the decision time is shortened, the personnel reduction and the efficiency improvement are realized, and the relay protection intelligence level is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A relay protection multi-source main station fusion decision rapid support method is characterized by comprising the following steps: the method comprises the following steps:
s1, when the line has a fault, the information protection master station sends a protection fault analysis report with protection action element information to the wave recording master station;
s2, the wave recording master station receives the protection fault analysis report, integrates the protection action element information into the wave recording fault analysis report generated by the wave recording master station, extracts a fault brief report comprising fault time, a fault line name and characteristic quantity with an initial wave head from the wave recording fault analysis report, and sends the fault brief report to the traveling wave master station to request traveling wave distance measurement;
s3, after receiving the traveling wave ranging request of the wave recording master station, the traveling wave master station carries out traveling wave ranging based on the initial wave head and returns the ranging result to the wave recording master station;
and S4, the traveling wave ranging result is used by the wave recording master station to correct the line ranging result in the wave recording fault analysis report, and the corrected wave recording fault analysis report is sent to a regulation and control mechanism.
2. The relay protection multi-source master station fusion decision fast support method of claim 1, characterized in that: a plurality of wave recording devices are hung below the wave recording master station; a plurality of protection devices are hung under the information protection master station, and when a line fails, the protection devices send tripping commands to circuit breakers controlled by the protection devices; a plurality of traveling wave devices are hung under the traveling wave master station;
the recording fault analysis report comprises a fault line name, a fault moment, a fault type, a trip moment, a coincidence moment, a fault distance measurement, change conditions of related voltage and current before and after a fault, a protection total action outlet and a breaker position change;
when the protection total action outlet is a line fault, the protection device gives a tripping instruction to the circuit breaker and gives a wave recording device through a hard node signal;
the initial wave head characteristic quantity comprises a peak value, a valid value and a fault duration.
3. The relay protection multi-source master station fusion decision fast support method of claim 2, characterized in that: the protection fault analysis report comprises all contents of the recording fault analysis report and protection action element information inside the protection device;
the protection action element information includes: when the line is in fault, the protection model, the name, the function classification, the action time and the action condition of an action element in the protection device are determined; and the protection action element information is provided to the information protection master station in a communication message SOE mode.
4. The relay protection multi-source master station fusion decision fast support method of claim 1 or 3, characterized in that: before executing the step S1, the method further includes the following steps:
s101, a wave recording master station collects disturbance information, carries out fault analysis according to the disturbance information, and generates a wave recording fault analysis report when judging that the disturbance information is fault information;
s102, extracting a fault brief report comprising fault time, a fault line name and initial wave head characteristic quantity from a wave recording fault analysis report, and sending the fault brief report to a message protecting main station to carry out a fault verification request;
s103, after receiving the wave recording master station fault checking request, the information protecting master station compares the fault checking request with a protection fault analysis report cache report which is arranged by the information protecting master station, and the protection fault analysis report requested by the wave recording master station is matched in the cache report;
if the matching fault analysis report is successful, the information protection master station sends a confirmation report to the wave recording master station, and the confirmation report comprises a protection fault analysis report selected after the matching is successful;
if the matching fault analysis report fails, the wave recording master station sends a denial report to the signal protection master station, wherein the denial report does not contain any protection fault analysis report;
s104, if the wave recording master station receives the negative report, judging that the fault of the wave recording master station is misjudged, and giving up the wave recording fault analysis report requesting verification;
if the wave recording master station receives the confirmation report and judges that the fault judgment of the wave recording master station is correct, comparing a protection fault analysis report confirmed by the information protection master station with a fault wave recording analysis report requesting verification, and if no difference exists, supplementing protection action element information in the protection fault analysis report into the wave recording fault analysis report to finish report confirmation; if the difference is found after comparison, correcting the recording fault analysis report by the content in the protection fault analysis report, and simultaneously supplementing the information of the protection action element to finish the correction of the report;
if the protection fault analysis report is arranged in the cache report by the information protection main station, the fault check request of the wave recording main station is not received within preset time, the failure judgment of the wave recording main station is judged, the protection fault analysis report is actively pushed to the wave recording main station, and the protection fault analysis report is directly processed into the wave recording fault analysis report after the wave recording main station receives the protection fault analysis report, and the fault check request does not need to be sent to the information protection main station system.
5. The relay protection multi-source master station fusion decision fast support method of claim 4, characterized in that: the matching means in S103 includes a time correlation method based on the fault time, or an initial wave head characteristic quantity comparison method.
6. The relay protection multi-source master station fusion decision fast support method of claim 5, characterized in that: the time correlation method comprises the following specific steps: taking the fault time given by the wave recording master station as a reference, relaxing the fault time for 15 seconds in the forward and backward directions respectively, generating a comparison time window, searching a protection fault analysis report in the cache report of the information-protecting master station in the time window, and if a unique report is found, successfully matching; otherwise, the report is continuously searched by adopting a characteristic quantity comparison mode.
7. The relay protection multi-source master station fusion decision fast support method of claim 6, characterized in that: the initial wave head characteristic quantity comparison method specifically comprises the following steps:
s201, taking the fault time given by the wave recording master station as a reference, and relaxing the fault time for 30 minutes forwards and backwards respectively to generate a comparison time window;
s202, in a time window, if no report exists in the information-guaranteeing master station cache report, matching fails;
in the time window, if a single report exists in the message protection master station cache report, the report is compared with the initial wave head characteristic quantity in the fault brief report provided by the wave recording master station in detail, the comparison object comprises a peak value, an effective value, fault duration, starting time and resetting time of a protection total action exit, if all the approximation degrees are matched, the matching is successful, the protection fault analysis report of the message protection master station is selected, otherwise, the matching is failed;
and in the time window, if a plurality of reports exist in the message-protecting main station cache reports, performing detailed comparison on all the reports one by one with initial wave head characteristic quantities in the fault brief report provided by the wave-recording main station, wherein the comparison objects comprise peak values, effective values, fault duration, starting time and resetting time of protecting total action outlets, after the comparison of the plurality of reports is completed, if all the approximation degrees are not matched, failure is allocated, otherwise, a protection fault analysis report with the most matched approximation degree is selected, and the matching is successful.
8. The relay protection multi-source master station fusion decision fast support method of claim 3, characterized in that: the S3 specifically includes the following steps:
s301, after receiving a traveling wave distance measurement request of a wave recording master station, a traveling wave master station calls all traveling wave data generated by a traveling wave device configured by a fault line within 15 seconds before and after a fault moment to the traveling wave master station, the traveling wave master station matches the traveling wave data according to a fault brief report, if the approximation degree is consistent, an initial wave head of the traveling wave data is successfully matched, the traveling wave master station carries out traveling wave distance measurement based on the initial wave head, a distance measurement result is returned to the wave recording master station, and meanwhile a success indication signal is returned; if the approximation degrees are not matched, the initial wave head matched with the traveling wave data fails, the traveling wave master station returns an unsuccessful indication signal to the wave recording master station, and a traveling wave ranging result is not provided;
s302, after the wave recording master station receives the indication signal of the traveling wave master station, if the indication is successful, the traveling wave ranging result is used for correcting the line ranging result in the wave recording fault analysis report; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
9. The relay protection multi-source master station fusion decision fast support method of claim 8, characterized in that: the step S301 of matching the traveling wave master station with the traveling wave data according to the fault brief report specifically comprises the following steps:
according to the line name in the fault brief report, based on the fault time, widening 15 seconds before and after, generating a comparison time window, calling all traveling wave data generated by a traveling wave device configured by the fault line in 15 seconds before and after the fault time to a traveling wave main station in the time window, calculating characteristic quantities of a peak value, an effective value and fault duration time for an initial wave head of the traveling wave data by the traveling wave main station, and comparing the characteristic quantities with the characteristic quantities provided in the request command.
10. Relay protection multisource main website fuses quick support system of decision, and it includes recording main website, letter main website and travelling wave main website, hang down with a plurality of recording devices in the recording main website, hang down with a plurality of protection device in the letter main website, hang down with a plurality of travelling wave devices in the travelling wave main website, its characterized in that: the wave recording master station comprises a disturbance data sorting module, a first interaction module, a first correction module and a second correction module; the information protection main station comprises a fault data sorting module and a second interaction module; the traveling wave master station comprises a third interaction module;
the wave recording device sends the disturbance information to the disturbance data sorting module to analyze the disturbance information, wherein the disturbance information comprises fault information and non-fault information;
the disturbance data sorting module analyzes and judges whether the disturbance information is fault information, and when the disturbance information is judged to be non-fault information, the non-fault information is recorded; when the fault information is judged, generating a wave recording fault analysis report according to the fault information, and sending the wave recording fault analysis report to the first interaction module for caching;
the first interaction module extracts fault brief reports comprising fault time, fault line names and initial wave head characteristic quantities from the wave recording fault analysis reports and sends the fault brief reports to the second interaction module for carrying out fault verification requests;
the fault data sorting module generates a protection fault analysis report according to fault information generated by the protection device when the line has a fault, and sends the protection fault analysis report to the second interaction module for caching;
the second interaction module is combined with a buffer report of a protection fault analysis report arranged by the second interaction module after receiving the fault check request sent by the first interaction module, and the buffer report is matched with the protection fault analysis report requested by the first interaction module; if the matching fault analysis report is successful, the second interaction module sends a confirmation report to the first correction module, and the confirmation report comprises a protection fault analysis report selected after the matching is successful; if the matching fault analysis report fails, the second interaction module sends a denial report to the first correction module, wherein the denial report does not contain any protection fault analysis report;
the first correction module receives the confirmation report or the denial report sent by the protection fault analysis report interaction module, supplements the protection fault analysis report in the confirmation report to the wave recording fault analysis report if the confirmation report is received, and sends the supplemented wave recording fault analysis report to the first interaction module; if the negative report is received, judging that the fault of the wave recording main station is misjudged, and giving up the wave recording fault analysis report requesting verification;
after the first interaction module receives the recording fault analysis report supplemented by the first correction module, a fault brief report containing fault time, a fault line name and characteristic quantity with an initial wave head is extracted from the recording fault analysis report and sent to a third interaction module, the third interaction module searches corresponding traveling wave data in a traveling wave device according to the fault brief report, matches the traveling wave data with the fault brief report, if the approximation degree is matched, the initial wave head matching the traveling wave data is successful, the third interaction module carries out traveling wave distance measurement based on the initial wave head, returns a distance measurement result to the second correction module, and returns a success indication signal; if the approximation degrees are not matched, the initial wave head of the traveling wave data is failed to be matched, the third interaction module returns an unsuccessful indication signal to the second correction module, and the traveling wave ranging result is not provided;
after the second correction module receives the indication signal of the third interaction module, if the indication is successful, the line ranging result in the wave recording fault analysis report is corrected by using the traveling wave ranging result, and the corrected wave recording fault analysis report is sent to the first interaction module; and if the indication is unsuccessful, not modifying the line ranging result in the recording fault analysis report.
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