A kind of fault data fusion method based on fault message identificationTechnical field
The present invention relates to a kind of displacement sensors, belong to displacement detecting/monitoring field.
Background technique
When failure occurs, failure Inversion System can get a large amount of fault datas, including failure wave-recording event, failure wave-recordingFile, protection act report, protection event, SCADA system SOE record, remote signalling displacement record, WAMS data file etc..SystemAccording to the common feature of data, the integration technology of large scale electric network data is studied, a large amount of electric network fault Data Integration is got up,It realizes the data fusion as unit of failure, provides data basis for accident analysis.
Available data integration technology concentrates on the fusion of data level information, directly to not pretreated original observed dataIt is integrated and is analyzed.Advantage has been to maintain object information as much as possible, and information does not occur substantially and loses or omits；The disadvantage is thatIt is too many to handle data, the consuming time is too long, and real-time is poor.Another information fusion is the fusion of feature level information, also known as file-levelInformation fusion, be to having been subjected to after sensor tentatively pre-process, sensor realize essential characteristic extract, offer files and reportsOn the basis of the comprehensive analysis processing that executes.Its advantage is that not only having kept sufficient amount of important information, but also have been subjected to permissibleData compression dilutes data volume significantly, and the real-time for the treatment of process can be improved；The disadvantage is that inevitable that certainInformation loss, thus pretreatment need to be proposed compared with strict requirements.
Due to the polyphyly of electric network fault data, it is necessary to use a kind of effective method reasonable coordination multi-source data, sufficientlyComprehensive useful information, improves the ability of the correct decisions in changeable environment.
Summary of the invention
It is an object of the invention to: a kind of fault data fusion method based on fault message identification is provided, with sufficiently comprehensiveUseful information is closed, the ability of the correct decisions in changeable environment is improved.
To solve the above problems, such a fault data fusion method based on fault message identification of proposed adoption, comprising:
Step 1: fault message integration
Fault message integration is based on fault time section, faulty equipment and relevant device, and the time is the key that description primary faultFactor, and judge whether each source message reflects the necessary condition of same primary fault, but under actual conditions, due to scheduling and respectivelyThe clock source difference at a station, the message time stamp that each source of system is sent is discrepant, it is therefore desirable to fault time section comeFault message integration is carried out, faulty equipment is exactly the primary equipment to break down, includes bus, transformer and route, is used forThe integration of SCADA information and Fault Recorder Information；
It is as follows to integrate process:
Fault message integrates process to protect with wave recording device hair message as trigger condition；
The fault message of protection triggering integrates process: system receives the message that protection is sent at the t1 moment, shows primary new eventBarrier starts, and due to difference of each source system on access conditions and system performance, prolongs to one reception of each source defaultWhen, system obtains relevant device action message after Δ tSCA delay from the SOE warning watch of EMS/SCADA；Meanwhile in Δ tTherefore in the delay time of record, system waits wave recording device to send failure message, and receive message is later according to fault signature judgementNo and triggering failure message is same primary fault, is then to assign this two failure message integration to the same failure id, otherwiseIt is judged as the primary new failure of this message trigger, the fault message triggered into failure wave-recording integrates process；
The fault message of wave recording device triggering integrates process: the integration process and the fault message of protection triggering integrate process substantiallyIt is identical, the difference is that: it needs to carry out the judgement of recording message integrity when receiving message, secondly, waiting wave recording deviceAfter sending message delay, if it is determined that wave recording device message is imperfect, recording list is initiated to wave recording device from system and is called togetherIt calls out, so that maximum possible obtains complete information；
Step 2: data source information time unifying
Characteristic feature when being occurred according to electric power system fault, in conjunction with the message content obtained from each data source, with following 2 kinds of sidesMethod carries out multi-source data alignment；
A. it is aligned according to the circuit breaker trip moment
Time unifying is carried out suitable for SCADA system information and fault recording system information, from the SOE record in SCADA systemBreaker actuation status information when middle acquisition failure, while accurately being sentenced from failure wave-recording file according to the mutation of faulted phase currentDisconnected circuit breaker trip moment, the general character of the two guarantee the feasibility of time unifying；
When line fault, breaker actuation situation when line fault breaker failure, time unifying method are as follows: from failure are consideredFaulty line id is obtained in the Trouble Report that recording system is sent, and the breaker at faulty equipment both ends is obtained according to faulty line idId obtains the circuit breaker trip record of corresponding plant stand, it is believed that this record time and record in the SOE record that SCADA system is sentFaulted phase current mutation moment reflection is the same moment in wave waveform, i.e., is aligned two fault message source times, meanwhile,In case of breaker failure situation, then the respective record and recording waveform for needing to find failure protection tripping circuit breaker carry out pairTogether.
B. it is aligned according to protection act matching
Carry out time unifying suitable for SCADA system information and protection information substation information, SOE record in SCADA system andThere are protection act information, under the conditions of existing power generation, electric system in the protection act report that protection main website is sentDetailed protection act model is temporarily defined not yet, is the protection act record of character string forms in the information that system obtains,The identical protection act information in two fault message sources is found by the way of string matching, protects information by two according to theseThe time unifying in a fault message source.
The matching process for carrying out protection act information according to keyword is as follows:
Step 1: extracting protection model from protection act report:
(1) search key in device model, including RCS, PCS, CSC, SSR and PSL；
(2) number after above-mentioned keyword, including 931,602 and 943 are obtained, space, '-' character are ignored；
Step 2: record of the screening comprising above-mentioned keyword and number in the SOE record of SCADA, comprising: comprising ' RCS ' and' 931 ' record；
Step 3: searched in the SOE record of protection act report and above-mentioned screening while including following two categories key-stringsRecord:
(1) class types are protected, comprising: differential, vertical poor, quick-break, acceleration, failure, dead zone, I sections/II sections/III sections of ground distance；
(2) action description class, comprising: movement, outlet, starting；
Step 4: carrying out time unifyings according to the alignment of one of occurrence or comprehensive multiple occurrences.
Data information integration technology is a kind of good tool that can meet the requirement.The polyphyly and complexity of electric network dataIt is required that faulted-phase judgment must be effectively integrated, the robustness of fault message could be provided in this way.
Compared with prior art, the present invention utilizes the key characteristic of each data source fault message, the spy based on source informationSign carries out data fusion.The characteristics of trouble analysis system each in conjunction with power grid, the common trait of trouble-shooting data, to number of faultsAfter carrying out real-time integration, fault data is carried out by time unifying according to the characteristic of fault message, to provide for accident analysisEffectively, reliable and accurate data.
Detailed description of the invention
Fig. 1 is electric network data fusion process figure of the present invention；
Fig. 2 is that the fault message of protection triggering integrates flow chart；
Fig. 3 is that the fault message of wave recording device triggering integrates flow chart；
Fig. 4 is to carry out time unifying flow chart according to the circuit breaker trip moment.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, invention will be made by attached drawing below furtherGround detailed description.
Embodiment:
Electric network data fusion process figure will tell about fault message integration and event pair as shown in Figure 1, in following content in detailNeat method, comprising:
Fault message integration
Fault message integration is to realize the premise of multi-source information accident analysis.In the end system of station, communication access environment is to compareComplicated, the message obtained from each source system has many characteristics, such as independence, diversity, redundancy, and system is in deployment way, pipeReason mode and the method for operation etc. are mutually indepedent, and communication interface, transmission mode and file format etc. are widely different, simultaneouslyAll there is redundancy to a certain extent in the message that each system is sent.In order to accurately and effectively comprehensively utilize the number of each data sourceAccording to progress accident analysis it may first have to the data for integrating each data source by fault message, the data obtained from each data sourceIn determine the reflection of which data is same primary fault.
1. fault message integrates foundation
The common characteristic that fault message integration needs to find multiple system messages, which is used as, integrates foundation.In this system, fault messageIntegration is based on the following conditions:
A) fault time section
B) faulty equipment and relevant device
Time is the key factor for describing primary fault, and judges whether each source message reflects the necessary item of same primary faultPart.But under actual conditions, due to dispatching the clock source difference with each station, the message time stamp that each source of system is sent is variant's.Therefore it needs to carry out fault message integration with fault time section.Faulty equipment is exactly the primary equipment to break down, packetIntegration containing bus, transformer and route, for SCADA information and Fault Recorder Information.
2. fault message integrates process
Protection and wave recording device can send message to system when failure occurs, and SCADA message and file can only be called actively and be obtainedIt takes.Therefore, the fault message of this system integrates process to protect with wave recording device hair message as trigger condition.
It is as shown in Figure 2 that the fault message of protection triggering integrates process.System receives the message that protection is sent, table at the t1 momentBright primary new failure starts.Due to difference of each source system on access conditions and system performance, set to each source systemA fixed reception delay.System obtains relevant device movement letter after Δ tSCA delay from the SOE warning watch of EMS/SCADABreath.Meanwhile in Δ t therefore in the delay time of record, system waits wave recording device to send failure message, receives message later according to eventBarrier feature judges whether and triggers that the message of failure is same primary fault, is then to assign this two failure message integration sameOtherwise a failure id is judged as the primary new failure of this message trigger, the fault message integration triggered into failure wave-recordingProcess.
The fault message of wave recording device triggering integrates process such as Fig. 3, the fault message of process flow and Prudential Master triggeringIt is similar to integrate process, but needs to carry out the judgement of recording message integrity when receiving message.Secondly, waiting wave recording device hairAfter sending message delay, if it is determined that wave recording device message is imperfect, recording list can be initiated from system to wave recording deviceCalling, so that maximum possible obtains complete information.
According to above-mentioned analysis, in fault message integration process, it is desirable to provide a variety of Rule of judgment progress multi-sources of integrating disappearThe differentiation and integration of breath, in this system, fault message integration is based on fault time section, faulty equipment and relevant device thereforeBarrier plant stand is judged that the specific integration condition of the items in Fig. 2 and Fig. 3 is as shown in table 1, and the △ t in table is configurable, for mostLimits are eliminated since station end and the inconsistent bring of dispatching terminal Time Inconsistency or each system time of dispatching terminal influence.
The fault message of 1 failure wave-recording of table triggering integrates process
Data source information time unifying
In actual production operational process, due to the difference of clock source, each substation's time is differentiated.Even if sameIn substation, the unstability due to clock apparatus and the clock synchronization problem by time service equipment itself, each device in substation insideTime is also different.Accident analysis is carried out in order to accurately and effectively comprehensively utilize the data of each data source it may first have toThe time of each fault message source data is aligned by certain rule.
Characteristic feature when being occurred according to electric power system fault, in conjunction with the message content obtained from each data source, Ke YiyongFollowing 2 kinds of methods carry out multi-source data alignment.
1. being aligned according to the circuit breaker trip moment
This method is suitable for SCADA system information and fault recording system information carries out time unifying.From SCADA systemBreaker actuation status information when available failure in SOE record, while can be from failure according to the mutation of faulted phase currentAccurate judgement circuit breaker trip moment in recorded wave file, the general character of the two guarantee the feasibility of time unifying.
By taking line fault as an example, breaker actuation situation when line fault breaker failure, time unifying method are consideredAre as follows: faulty line id is obtained from the Trouble Report that fault recording system is sent, and is set according to the available failure of faulty line idThe breaker id at standby both ends obtains the circuit breaker trip record of corresponding plant stand in the SOE record that SCADA system is sent, it is believed thatFaulted phase current mutation moment reflection is the same moment in this record time and recording waveform, can be by two fault messagesSource time alignment.Meanwhile in case of breaker failure situation, then need to find the respective record of failure protection tripping circuit breakerIt is aligned with recording waveform.Time unifying process such as Fig. 4.
2. being aligned according to protection act matching
This method is suitable for SCADA system information and protection information substation information carries out time unifying.SOE in SCADA systemThere is protection act information in the protection act report that record and protection main website are sent.Under the conditions of existing power generation, electricityForce system temporarily defines detailed protection act model not yet, is the protection act of character string forms in the information that system obtainsRecord.The mode that string matching can be used finds the identical protection act information in two fault message sources, according to these protectionsInformation can be by the time unifying in two fault message sources.
This method carries out protection act information matches according to keyword, and matching process is as follows:
Step 1: extracting protection model from protection act report:
(1) search key in device model: RCS, PCS, CSC, SSR, PSL etc.；
(2) number after above-mentioned keyword, such as 931,602,943 are obtained, space, '-' character are ignored；
Step 2: record of the screening comprising above-mentioned keyword and number in the SOE record of SCADA, such as: comprising ' RCS ' and' 931 ' record；
Step 3: searched in the SOE record of protection act report and above-mentioned screening while including following two categories key-stringsRecord:
(1) class types are protected: differential, vertical poor, quick-break, acceleration, failure, dead zone, I sections/II sections/III sections etc. of ground distance；
(2) action description class: movement, outlet, starting etc.；
Such as: two sources all include ' differential ' and ' movement '；
Step 4: carrying out time unifyings according to the alignment of one of occurrence or comprehensive multiple occurrences.