CN105510819A - Breaker health status assessment system and method based on fault recording analysis - Google Patents
Breaker health status assessment system and method based on fault recording analysis Download PDFInfo
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- CN105510819A CN105510819A CN201610003432.7A CN201610003432A CN105510819A CN 105510819 A CN105510819 A CN 105510819A CN 201610003432 A CN201610003432 A CN 201610003432A CN 105510819 A CN105510819 A CN 105510819A
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- fault
- time
- breaker
- wave file
- recorded wave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Abstract
The invention discloses a breaker health status assessment system and method based on fault recording analysis, comprising: analyzing a fault recording file, obtaining correlative items such as breaker motion time, and estimating the health status of a breaker according to a motion time change trend; according to collected recording information after a fault, obtaining the name of the breaker; and according to a series of marking items including a fault beginning time point, a fault stop time point, a breaker motion time point and a protection motion time point, determining fault generation, protection motion, breaker motion and fault stop time points, obtaining protection motion time, breaker motion time, fault duration time and fault removing time, establishing a breaker motion time data table, and providing corresponding early warning prompts according to breaker motion time changes.
Description
Technical field
The present invention relates to technical field of electric power automation, particularly a kind of isolating switch health Evaluation system and method for resolving based on failure wave-recording.
Background technology
Power failure recorder, again referred to as transient fault recorder device TFR (TransientFaultRecorder), it can break down (as line short in electric system, ground connection etc., and system overvoltage, load unbalanced etc.) time, automatically, exactly before the record electricity system failure, various electric parameters (the main number amount of rear process, such as on off state change, analog quantity, mainly voltage, current values) situation of change, by these electric quantitative analyses, relatively, to analyzing and processing accident, judge to protect whether correct operation, improve the effect of safe operation of power system level.
What fault wave recording device record electric parameters adopted is COMTRADE file layout.COMTRADE is ieee standard electrical power system transient data interchange general format.Standard a kind of form that has been the document definition of the transient-wave that collects of electric system or electric power system model and casualty data.This form is intended to provide a kind of data interchange general format being easy to illustrate.IEEE proposed in 1991, and to have carried out revising and perfect in 1999.Each COMTRADE record has one group of maximum 4 relative file, and each in 4 files has a different message level.4 files are as follows: a) heading file b) configuration file c) data file d) message file.
1 heading file (xxxxxxxx.HDR)
Heading file is the optional ASCII text file of one set up by the author of COMTRADE data, and the founder of heading file can create any information with the order of any needs.The form of heading file is ASCII.
2 configuration files (xxxxxxxx.CFG)
Configuration file is a kind of ASCII text file, for the form of data (.DAT) file is correctly described, therefore must preserve with a kind of concrete form.Data (.DAT) information that file comprises annotated by this file, comprising items such as such as sampling rate, number of channels, frequency, channel informations.A field identification file in configuration file the first row according to time (such as 1991,1999 etc.) of COMTRADE Standard Edition.If this field does not exist or sky, then suppose that file is then in accordance with the initial issue date (1991) of standard.It is with ASCII fromat or the field stored in a binary format that configuration file also comprises the adjoint data file of identification.
3 data files (xxxxxxxx.DAT)
Data file comprises the value of all input channels of each sampling in record.Data file comprises the time tag of a serial number and each sampling.These sampled values are except the data of record analog input, and also recording status, namely represents the input of ON/OFF signal.
4 message files (xxxxxxxx.INF)
Message file is the special information that a kind of document creation person wishes to make it outside to the useful information of user.Message file is optional file.
Summary of the invention
In power automatic system; when a failure occurs it; isolating switch and protection act will be triggered; power failure recorder is by electric parameters relevant to fault for record automatically; and be reflected in the recorded wave file of comtrade form, analog quantity channel information data and switching value channel information data can be recorded in recorded wave file respectively.The health status of isolating switch can produce extreme influence to the triggered time of breaker actuation.Same, the breaker actuation time also reflects the health status of isolating switch.
The technical problem to be solved in the present invention is: based on failure wave-recording analytic technique, according to the actuation time change of isolating switch when fault occurs, isolating switch health status is assessed, thus timely as required isolating switch to be overhauled, ensure the safe operation of electric system, improve overhaul efficiency simultaneously.
Technical scheme of the present invention is: the isolating switch health Evaluation system of resolving based on failure wave-recording, comprising:
Recorded wave file handling module, for obtaining recorded wave file, and stores recorded wave file temporarily; The recorded wave file of described recorded wave file and comtrade form;
Read judge module, for opening the interim recorded wave file stored, and the data in recorded wave file being operated, as operation reports an error, then deleting corresponding recorded wave file;
Recorded wave file parsing module, for obtaining the fault-time of each stoppage circuit breaker title and respective circuit breakers from acquired recorded wave file, and Reflector amount and time quantum; Described Reflector amount comprises time of fault inception point, fault end time point, breaker actuation time point and operating time of protection point; Described time quantum comprises breaker actuation time, operating time of protection, trouble duration and clearing time of fault;
, there is the actuation time of rear isolating switch for calculating each fault, being compared adjacent twice actuation time, and judging isolating switch health status according to comparative result, and exporting judged result in isolating switch situation judge module.
The present invention is based on the isolating switch health Evaluation method of said system, comprise the following steps:
Step one, according to known failure message, mates, obtains corresponding recorded wave file in recorded wave file database; And store temporarily;
Described known fault information is in electric power system fault daily paper message file, comprises the content of the information such as time of failure, abort situation.During coupling, protective device or the place equipment protecting equipment recorded wave file of circuit both sides, fault scene place when fault occurs can be obtained;
Step 2, the interim recorded wave file stored is resolved, obtains corresponding Reflector amount, comprise step:
2.1) according to the fault type in failure message, the current value of each corresponding failure passage and the current value of zero-sequence current passage in corresponding analog quantity channel is chosen in recorded wave file, as the foundation choosing mark amount; Above-mentioned fault type comprises A phase ground connection, B phase ground connection, C phase ground connection, AB ground connection, AC ground connection, BC ground connection, AB is alternate, BC is alternate, AC is alternate and three-phase fault; 2.2) jump-value of current method is utilized to determine mark amount: the calculating formula of fault current component is Δ i
k=i
k-i
k-N, Δ i in formula
kfor fault component is in the value of k sampling instant, i
kfor the measured current sampled value in k moment, i
k-Nfor the current sampling data in the last cycle in k moment, N represents the sampling number of a power frequency period; Due to when systems are functioning properly, the fault current component calculated is 0, when fault start at the end of, fault component is not 0; Therefore by calculating the fault current component of each point, time of fault inception point t is found
0with fault end time point t
1;
2.3) according to the title of recorded wave file breaker in middle amount passage and action whether information; choose breaker actuation signalling channel, protection act signalling channel; data in Acquisition channel, and then the time point obtaining that in each passage, signal changes from 0 to 1, respectively as breaker actuation time point t
2with operating time of protection point t
3mark amount;
Step 3, according to the mark amount chosen, calculates stoppage circuit breaker actuation time, operating time of protection, trouble duration and fault clearance time: be respectively respectively:
Breaker actuation time=t
2-t
0(1)
Operating time of protection=t
3-t
0(2)
Trouble duration=t
1-t
0(3)
Fault clearance time=t
2-t
0(4)
Set up breaker data storehouse, each isolating switch title is corresponding with its actuation time, operating time of protection, trouble duration and fault clearance time, be recorded as failure message, and upgrade breaker data storehouse;
Step 4, monitors the data in breaker data storehouse, when breaker data has renewal, then with deducting actuation time last time, if difference is less than or equal to zero, then ignores current up-to-date actuation time; If difference is greater than zero, then this difference is recorded in breaker actuation time lengthening accumulated value field and also exports as isolating switch early warning information.
Further, further comprising the steps of between step one of the present invention and step 2: to open the recorded wave file temporarily stored, attempt operating to the data in recorded wave file, if operation reports an error, supporting paper is not readable, then delete local temporary files folder and associated documents; If do not report an error, supporting paper record format is correct or without damage, goes to step two and carries out recorded wave file parsing.What described trial was carried out is operating as the master data operations such as such as reading, is prior art.
The present invention is applied in power automatic system, failure wave-recording file is stored in ftp server, in step one, first obtains the ftp path of failure wave-recording file, then return to the ftp path of the recorded wave file that the match is successful, and according to this path, recorded wave file is stored in this locality temporarily.Database in ftp server is conducted interviews, mates and downloaded as prior art.
Beneficial effect of the present invention is: based on failure wave-recording analytic technique, according to the actuation time change of isolating switch when fault occurs, isolating switch health status is assessed, can the health status of Timeliness coverage isolating switch, to overhaul isolating switch as required, ensure the safe operation of electric system, improve overhaul efficiency simultaneously.
Accompanying drawing explanation
Figure 1 shows that the inventive method schematic flow sheet;
Figure 2 shows that step 2.2 short circuit currents waveform schematic diagram;
Figure 3 shows that mark amount obtains schematic diagram.
Embodiment
Further illustrate below in conjunction with the drawings and specific embodiments.
The present invention is based on the isolating switch health Evaluation system that failure wave-recording is resolved, comprising:
Recorded wave file handling module, for obtaining the recorded wave file of comtrade form, and stores recorded wave file temporarily;
Read judge module, for opening the interim recorded wave file stored, and the data in recorded wave file being operated, as operation reports an error, then deleting corresponding recorded wave file;
Recorded wave file parsing module, for obtaining the fault-time of each stoppage circuit breaker title and respective circuit breakers from acquired recorded wave file, and Reflector amount and time quantum; Described Reflector amount comprises time of fault inception point, fault end time point, breaker actuation time point and operating time of protection point; Described time quantum comprises breaker actuation time, operating time of protection, trouble duration and clearing time of fault;
, there is the actuation time of rear isolating switch for calculating each fault, being compared adjacent twice actuation time, and judging isolating switch health status according to comparative result, and exporting judged result in isolating switch situation judge module.
As shown in Figure 1, a kind of specific embodiment of the present invention, namely based on the isolating switch health Evaluation method of said system, comprises the following steps:
Step one, according to known failure message, mates, obtains corresponding recorded wave file in recorded wave file database; And store temporarily;
Described known fault information is in electric power system fault daily paper message file, comprises the content of the information such as time of failure, abort situation.During coupling, protective device or the place equipment protecting equipment recorded wave file of circuit both sides, fault scene place when fault occurs can be obtained;
The present invention is applied in power automatic system, failure wave-recording file is stored in ftp server, in step one, first obtains the ftp path of failure wave-recording file, then return to the ftp path of the recorded wave file that the match is successful, and according to this path, recorded wave file is stored in this locality temporarily.Database in ftp server is conducted interviews, mates and downloaded as prior art.
Step 2, the interim recorded wave file stored is resolved, obtains corresponding Reflector amount, comprise step:
2.1) according to the fault type in failure message, the current value of each corresponding failure passage and the current value of zero-sequence current passage in corresponding analog quantity channel is chosen in recorded wave file, as the foundation choosing mark amount; Above-mentioned fault type comprises A phase ground connection, B phase ground connection, C phase ground connection, AB ground connection, AC ground connection, BC ground connection, AB is alternate, BC is alternate, AC is alternate and three-phase fault; 2.2) utilize jump-value of current method to determine mark amount: with reference to figure 2, the calculating formula of fault current component is Δ i
k=i
k-i
k-N, Δ i in formula
kfor fault component is in the value of k sampling instant, i
kfor the measured current sampled value in k moment, i
k-Nfor the current sampling data in the last cycle in k moment, N represents the sampling number of a power frequency period; Due to when systems are functioning properly, the fault current component calculated is 0, when fault start at the end of, fault component is not 0; Therefore by calculating the fault current component of each point, time of fault inception point t is found
0with fault end time point t
1;
2.3) according to the title of recorded wave file breaker in middle amount passage and action whether information; choose breaker actuation signalling channel, protection act signalling channel; data in Acquisition channel, and then the time point obtaining that in each passage, signal changes from 0 to 1, respectively as breaker actuation time point t
2with operating time of protection point t
3mark amount;
Step 3, with reference to figure 3, according to the mark amount chosen, calculates stoppage circuit breaker actuation time, operating time of protection, trouble duration and fault clearance time: be respectively respectively:
Breaker actuation time=t
2-t
0(1)
Operating time of protection=t
3-t
0(2)
Trouble duration=t
1-t
0(3)
Fault clearance time=t
2-t
0(4)
Set up breaker data storehouse, each isolating switch title is corresponding with its actuation time, operating time of protection, trouble duration and fault clearance time, be recorded as failure message, and upgrade breaker data storehouse;
Step 4, monitors the data in breaker data storehouse, when breaker data has renewal, then with deducting actuation time last time, if difference is less than or equal to zero, then ignores current up-to-date actuation time; If difference is greater than zero, then this difference is recorded in breaker actuation time lengthening accumulated value field and also exports as isolating switch early warning information.
Further comprising the steps of between step one and step 2: to open the interim recorded wave file stored, attempt operating to the data in recorded wave file, if operation reports an error, supporting paper is not readable, then delete local temporary files folder and associated documents; If do not report an error, supporting paper record format is correct or without damage, goes to step two and carries out recorded wave file parsing.
Isolating switch early warning information is carried out to the output of early warning by prior art, thus facilitate staff to know in time, and carry out corresponding maintenance, to ensure that the operation of isolating switch can not have influence on the safe operation of electric system.
Claims (4)
1., based on the isolating switch health Evaluation system that failure wave-recording is resolved, it is characterized in that, comprising:
Recorded wave file handling module, for obtaining recorded wave file, and stores recorded wave file temporarily;
Read judge module, for opening the interim recorded wave file stored, and the data in recorded wave file being operated, as operation reports an error, then deleting corresponding recorded wave file;
Recorded wave file parsing module, for obtaining the fault-time of each stoppage circuit breaker title and respective circuit breakers from acquired recorded wave file, and Reflector amount and time quantum; Described Reflector amount comprises time of fault inception point, fault end time point, breaker actuation time point and operating time of protection point; Described time quantum comprises breaker actuation time, operating time of protection, trouble duration and clearing time of fault;
, there is the actuation time of rear isolating switch for calculating each fault, being compared adjacent twice actuation time, and judging isolating switch health status according to comparative result, and exporting judged result in isolating switch situation judge module.
2., based on the isolating switch health Evaluation method of system described in claim 1, it is characterized in that, comprise the following steps:
Step one, according to known failure message, mates, obtains corresponding recorded wave file in recorded wave file database; And store temporarily;
Step 2, the interim recorded wave file stored is resolved, obtains corresponding Reflector amount, comprise step:
2.1) according to the fault type in failure message, the current value of each faulty channel in corresponding analog quantity channel in recorded wave file and the current value of zero-sequence current passage is chosen, as the foundation choosing mark amount; Above-mentioned fault type comprises A phase ground connection, B phase ground connection, C phase ground connection, AB ground connection, AC ground connection, BC ground connection, AB is alternate, BC is alternate, AC is alternate and three-phase fault;
2.2) jump-value of current method is utilized to determine mark amount: the calculating formula of fault current component is Δ i
k=i
k-i
k-N, Δ i in formula
kfor fault component is in the value of k sampling instant, i
kfor the measured current sampled value in k moment, i
k-Nfor the current sampling data in the last cycle in k moment, N represents the sampling number of a power frequency period; Due to when systems are functioning properly, the fault current component calculated is 0, when fault start at the end of, fault component is not 0; Therefore by calculating the fault current component of each point, time of fault inception point t is found
0with fault end time point t
1;
2.3) according to the title of recorded wave file breaker in middle amount passage and action whether information; choose breaker actuation signalling channel, protection act signalling channel; data in Acquisition channel, and then the time point obtaining that in each passage, signal changes from 0 to 1, respectively as breaker actuation time point t
2with operating time of protection point t
3mark amount;
Step 3, according to the mark amount chosen, calculates stoppage circuit breaker actuation time, operating time of protection, trouble duration and fault clearance time: be respectively respectively:
Breaker actuation time=t
2-t
0(1)
Operating time of protection=t
3-t
0(2)
Trouble duration=t
1-t
0(3)
Fault clearance time=t
2-t
0(4)
Set up breaker data storehouse, each isolating switch title is corresponding with its actuation time, operating time of protection, trouble duration and fault clearance time, be recorded as failure message, and upgrade breaker data storehouse;
Step 4, monitors the data in breaker data storehouse, when breaker data has renewal, then with deducting actuation time last time, if difference is less than or equal to zero, then ignores current up-to-date actuation time; If difference is greater than zero, then this difference is recorded in breaker actuation time lengthening accumulated value field and also exports as isolating switch early warning information.
3. method according to claim 2, it is characterized in that, further comprising the steps of between step one and step 2: to open the interim recorded wave file stored, attempt operating to the data in recorded wave file, if operation reports an error, supporting paper is not readable, then delete local temporary files folder and associated documents; If do not report an error, supporting paper record format is correct or without damage, goes to step two and carries out recorded wave file parsing.
4. according to the method in claim 2 or 3, it is characterized in that, failure wave-recording file is stored in ftp server, in step, first the ftp path of failure wave-recording file is obtained, then return to the ftp path of the recorded wave file that the match is successful, and according to this path, recorded wave file is stored in this locality temporarily.
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| CN106707156A (en) * | 2016-12-30 | 2017-05-24 | 北京新能中试科技有限公司 | On-line wave recording method and device for circuit breaker opening-closing coil |
| CN107526007A (en) * | 2017-08-14 | 2017-12-29 | 深圳市中业智能系统控制有限公司 | The recognition methods of fault type and device |
| CN107607803A (en) * | 2016-07-11 | 2018-01-19 | 株洲中车时代电气股份有限公司 | Converter system failure logging method, apparatus and system |
| CN107843779A (en) * | 2017-09-26 | 2018-03-27 | 国网河南省电力公司民权县供电公司 | A kind of Power System Fault Record classifying and analyzing method and system based on fuzzy clustering |
| CN109061460A (en) * | 2018-09-03 | 2018-12-21 | 国网湖北省电力有限公司电力科学研究院 | A kind of pole-mounted circuit breaker quickly cuts off the accurate measurement method of failures |
| CN110687399A (en) * | 2019-10-15 | 2020-01-14 | 贵州电网有限责任公司 | Method for judging waveform fault starting time of power distribution network fault indicator |
| CN116127163A (en) * | 2023-04-14 | 2023-05-16 | 国网江西省电力有限公司电力科学研究院 | Anti-interference power transformer short circuit impact analysis system and method |
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| CN116127163B (en) * | 2023-04-14 | 2023-08-15 | 国网江西省电力有限公司电力科学研究院 | Anti-interference power transformer short circuit impact analysis system and method |
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