CN101858959B - Simulation test method for influence of sampling data delay deviation on relay protective device - Google Patents
Simulation test method for influence of sampling data delay deviation on relay protective device Download PDFInfo
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Abstract
The invention belongs to the field of simulation systems for various voltage degrees of electric power systems, in particular to a simulation test method for influence of sampling data delay deviation on a relay protective device, solving the problem of adaptability test research on corresponding conditions by the protective device. The method comprises the steps of: constructing a dynamic simulation system aiming at a voltage class and a specific environment applied to the protective device; carrying out a system normal operation condition test, a protective region inside failure test and a protective region outside failure test in the dynamic simulation system, recording sampling data of an electronic transducer by using a failure recorder; and guiding corresponding data in the failure recorder out and processing current sampling values received by the protective device.
Description
Technical field
The invention belongs to each electric pressure dynamic power system simulations system field, be specifically related to a kind of emulation test method of influence of sampling data delay deviation on relay protective device.
Background technology
Digital transformer substation will bring far-reaching influence and huge change for automatic operating and the management of transformer station, be the important component part that intelligent grid is built, and all have great significance in economy and technical elements.Protective device is as topmost secondary device in transformer station, and its function and performance are subject to extensive concern always, along with the employing of electronic mutual inductor in digital transformer substation and Networks of Fiber Communications, will certainly bring developing by leaps and bounds of Protection Technology.Yet; digital transformer substation is as an emerging field, and what electronic mutual inductor adopted is new technology, still is in the application initial stage; himself characteristic and stability are not also very clear and definite on the impact of protective device, and Networks of Fiber Communications is not enough in the application experience of process layer.Therefore; the reliability application in digital transformer substation is very necessary for protective relaying device on the emulation test method of the impact of protective device for research electronic mutual inductor and process-level network abnormal conditions, is the important means of exploitation and the detection of corresponding protective relaying device.
Electronic mutual inductor (comprising merge cells) and process-level network all can make the transmission of sampled value produce time-delay, and the electronic mutual inductor of different manufacturers is due to the difference of technical elements, it is not identical that data are processed time-delay, simultaneously, the process-level network time-delay also can be subjected to the impact of the factors such as network load and change.The time-delay that sampled value sends directly affects long the choosing of protective device operational data window, and operation exerts an influence to protective device, delay time longly will cause responding protection blocking, so protective device must carry out emulation testing targetedly before the engineering application.
Summary of the invention
In order to overcome defects, the present invention proposes a kind of emulation test method of influence of sampling data delay deviation on relay protective device, comprise the following steps:
One) electric pressure and the specific environment used for protective device are built the dynamic simulative emulation system, and step is as follows:
(1) adopt equivalent generator simulative power plant;
(2) adopt the valve system such as equivalent power supply simulation;
(3) adopt three-winding transformer, double-bus configuration analog digital transformer station, is connected through single time analog line between analog digital transformer station and simulative power plant, and be connected through the double back analog line between valve system such as simulation grade;
(4) voltage of analog digital transformer station, current signal by electronic type voltage transformer, electronic current mutual inductor collection, send digital oscillograph to;
(5) on transmission line of electricity, on double-bus, and the high, medium and low voltage side of transformer 12 trouble spots are set altogether, each trouble spot is used for simulating various types of metallicity or through the fault of transition resistive short, the transformer high-voltage winding arranges a trouble spot, is used for the turn-to-turn short circuit of simulation different range.
Two) carry out system's normal operation test, the outer fault test of the test of protected location internal fault and protected location in the dynamic simulative emulation system, and the sampled data by fault oscillograph record protection use respective electrical minor mutual inductor;
Three) corresponding data in fault oscillograph is derived, the current sampling data that protective device receives is processed, concrete grammar is as follows:
(1) choose the normal operation data, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation,
(2) choose the situation data that break down in the protected location, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation,
(3) choose the situation data that break down outside the protected location, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation.
Wherein, to the evaluation criterion after the emulation testing of influence of sampling data delay deviation on relay protective device be:
When (1) system normally moved, protection received when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, and protective device should work; Protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, and lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation;
When (2) the protected location internal fault occurs in system, before fault occurs, protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, protective device should work, protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation, if have fault to exist in the protected location after protection is open, protective device is answered action message; If in fault, protective device starts, protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, should not affect the correct operation of protective device; After fault finishes, protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, protective device should work, protection receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation;
When (3) the protection external area error occurs in system, before fault occurs, carry out in and fault finish after protective device receive each electronic mutual inductor sampled data and time-delay occurs, misoperation should not occur all;
(4) after protective device is delayed time out-of-limit locking because sampling, should there be the corresponding event recorded message to generate.
The advantage of technical solution of the present invention is to have invented a kind of electronic mutual inductor and network delay deviation to the emulation test method of protective relaying device impact, has solved the adaptive testing research of protective device to corresponding situation.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is the emulation test system process flow diagram of influence of sampling data delay deviation on relay protective device.
Embodiment
1, the 220kV electric pressure specific environment of using for protective device is built the dynamic simulative emulation system, and step is as follows:
(1) adopt the power plant of equivalent generator simulation 220kV side total installation of generating capacity 550MVA, the power plant that adopts equivalent generator simulation 110kV side total installation of generating capacity 120MVA;
(2) adopting equivalent power supply simulation system capacity of short circuit is the valve system that waits of 10000MVA;
(3) adopting the interior rated capacity of three-winding transformer imitating substation of mode of connection Y0/Y/ Δ-12-11 is the three-winding transformer of 238MVA, in conjunction with double-bus configuration analog digital transformer station, be connected through single time analog line of 100km between analog digital transformer station and simulation 220kV side power plant, power plant is connected through single time analog line of 10km with simulation 110kV side, waits between valve system with simulation to be connected through 200km double back analog line;
(4) gather current signal at high voltage side of transformer, medium voltage side, low-pressure side access electronic current mutual inductor ECT1, ECT2, ECT3 respectively, send ZH-5N numeral oscillograph to;
(5) the high, medium and low voltage side at transformer arranges 6 trouble spots altogether, each trouble spot is used for simulating various types of metallicity or through the fault of transition resistive short, the transformer high-voltage winding arranges a trouble spot, is used for the turn-to-turn short circuit of simulation different range;
(6) simulation system is normally moved and tranformer protection district internal and external fault situation, obtains corresponding emulated data by ZH-5N numeral oscillograph.
2, with the input of the data in 1 digital protective relay proving installation, data are processed, simulation different manufacturers electronic mutual inductor and process-level network send sampled value data delay difference.
(1) choose the normal operation data, input digital protecting proving installation, " MAC Address ", " APPID " corresponding in " sampled value setting " project in the digital protecting proving installation are reached " SVID " subitem information to be reached " SVID " with " MAC Address ", " APPID " of the merge cells of ECT1, ECT2, ECT3 and arranges identical, choose ECT1 sampled value data sequence, it is postponed respectively 1 frame～7 frames than ECT2, ECT3 sampled value data sequence;
(2) choose the situation data that break down in the protected location, input digital protecting proving installation, with " MAC Address " corresponding in " sampled value setting " project in the digital protecting proving installation, " APPID " reaches " SVID " subitem information and ECT1, ECT2, " MAC Address " of the merge cells of ECT3, " APPID " reaches " SVID " and arranges identical, choose ECT1 sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, with it than ECT2, ECT3 sampled value data sequence postpones respectively 1 frame～7 frames,
(3) choose the situation data that break down outside the protected location, input digital protecting proving installation, with " MAC Address " corresponding in " sampled value setting " project in the digital protecting proving installation, " APPID " reaches " SVID " subitem information and ECT1, ECT2, " MAC Address " of the merge cells of ECT3, " APPID " reaches " SVID " and arranges identical, choose ECT1 sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, with it than ECT2, ECT3 sampled value data sequence postpones respectively 1 frame～7 frames.
3, the sampled value data after adjusting in 2 are exported to protective device, in the event that the record protection device reports and ZH-5N about the action message of protective device.
4, by evaluation method, protective relaying device is estimated.
Invention has been described according to specific exemplary embodiment herein.It will be apparent carrying out to one skilled in the art suitable replacement or revise under not departing from the scope of the present invention.Exemplary embodiment is only illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (2)
1. the emulation test method of an influence of sampling data delay deviation on relay protective device comprises the following steps:
One) electric pressure and the specific environment used for protective device are built the dynamic simulative emulation system, and step is as follows:
(1) adopt equivalent generator simulative power plant;
(2) adopt the valve system such as equivalent power supply simulation;
(3) adopt three-winding transformer, double-bus configuration analog digital transformer station, is connected through single time analog line between analog digital transformer station and simulative power plant, and be connected through the double back analog line between valve system such as simulation grade;
(4) voltage of analog digital transformer station, current signal by electronic type voltage transformer, electronic current mutual inductor collection, send digital oscillograph to;
(5) on transmission line of electricity, on double-bus, and the high, medium and low voltage side of transformer 12 trouble spots are set altogether, each trouble spot is used for simulating various types of metallicity or through the fault of transition resistive short, the transformer high-voltage winding arranges a trouble spot, is used for the turn-to-turn short circuit of simulation different range;
Two) carry out system's normal operation test, the outer fault test of the test of protected location internal fault and protected location in the dynamic simulative emulation system, and the sampled data by digital oscillograph record protection use respective electrical minor mutual inductor;
Three) corresponding data in digital oscillograph is derived, the current sampling data that protective device receives is processed, concrete grammar is as follows:
(1) choose the normal operation data, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation,
(2) choose the situation data that break down in the protected location, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation,
(3) choose the situation data that break down outside the protected location, input digital protecting proving installation, with " MAC Address " in " sampled value setting " project of digital protecting proving installation, " APPID " reaches " MAC Address " of " SVID " subitem information and merging unit of electronic transformer, " APPID " reaches " SVID " and arranges identical, choose an electronic current mutual inductor sampled value data sequence, before choosing respectively fault and beginning, reach fault in the fault generating process and finish data segment afterwards, it is postponed respectively 1 frame～7 frames than other electronic current mutual inductor sampled value data sequences, sampled value data after adjusting are exported to protective device, the logout information that the record protection device reports and action situation.
2. the method for claim 1 is characterized in that to the evaluation criterion after the emulation testing of influence of sampling data delay deviation on relay protective device being:
When (1) system normally moved, protective device received when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, and protective device should work; Protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, and lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation;
When (2) the protected location internal fault occurs in system, before fault occurs, protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, protective device should work, protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation, if have fault to exist in the protected location after protection blocking is open, protective device is answered action message; If in fault, protective device starts, protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, should not affect the correct operation of protective device; After fault finishes, protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation is no more than 1ms, protective device should work, protective device receives when between each electronic mutual inductor sampled data, the maximum delay deviation surpasses 1ms, latch-up protection, lower than 1ms, after lasting 40ms, protection blocking is open in the maximum delay deviation;
When (3) the protection external area error occurs in system, before fault occurs, carry out in and fault finish after protective device receive each electronic mutual inductor sampled data and time-delay occurs, misoperation should not occur all;
(4) after protective device is delayed time out-of-limit locking because sampling, should there be the corresponding event recorded message to generate.
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| CN102565741B (en) * | 2011-12-30 | 2014-09-17 | 浙江省电力公司 | Dynamic simulative detection method of performance of network recorder-analyzer on basis of symmetrical light principle |
| CN103605021B (en) * | 2013-11-18 | 2016-04-20 | 国家电网公司 | A kind of detection method of circuit relay protection device |
| CN104062583B (en) * | 2014-07-18 | 2016-06-15 | 国家电网公司 | A kind of simulated test detection method of closing in quick-break fault |
| CN105680445A (en) * | 2016-03-14 | 2016-06-15 | 中国电力科学研究院 | Delay-based heuristic peak load reduction method |
| CN106771775A (en) * | 2017-01-17 | 2017-05-31 | 贵州大学 | A kind of object test device of same intelligent substation protection device half |
| CN107800590B (en) * | 2017-10-31 | 2020-09-01 | 南方电网科学研究院有限责任公司 | Transmission equipment delay monitoring method and device and switch transmission delay monitoring system |
| CN111913145B (en) * | 2020-06-24 | 2022-09-16 | 南方电网科学研究院有限责任公司 | Method and device for testing measurement deviation of electronic transformer measurement system |
| CN113054746B (en) * | 2021-04-08 | 2023-01-03 | 南方电网科学研究院有限责任公司 | Relay protection master station online monitoring function fault filing module testing system and method |
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