CN104698235A - Method for generating transient fault waveforms in relay protection testing - Google Patents
Method for generating transient fault waveforms in relay protection testing Download PDFInfo
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Abstract
The invention relates to a method for generating transient fault waveforms in relay protection testing. The method comprises the following steps of 1, according to the type of a fault, the position of a fault point, system impedance and the waveform characteristic parameters of the fault and with combination of the mathematical models of power system fault theories, obtaining a transient fault waveform function corresponding to the type of the fault; 2, inputting the fault waveform function obtained in the step 1 into simulation software and adjusting simulation parameters to obtain a simulative waveform curve identical to a practical fault waveform and sampling point data; 3, storing waveform recording file configuration information including the sampling channel number, the sampling point number and the sampling frequency, which are obtained from the practical waveform, into a configuration file.cfg according to the COMTRADE (common format for transient data exchange) standard, and storing waveform data and sampling time, which are obtain through simulation computation, into a waveform recording data file.dat according to the COMTRADE standard; 4, importing the obtained configuration file and the waveform recording data file into a relay protection testing device for playback.
Description
Technical Field
The invention relates to a testing method of a microcomputer relay protection device, in particular to a method for generating a transient fault waveform in a relay protection test.
Background
The performance test method of the relay protection device commonly used at present comprises the following steps: a real-time power digital simulation test system and a relay protection tester. The real-time power digital simulation test system is a dynamic test and can output corresponding fault current according to fault types, and the relay protection tester is a static test and can only output fault quantity in a standard waveform shape.
The real-time electric power digital simulation test system is based on the electromagnetic transient calculation theory of an electric power system, adopts a parallel operation method of a plurality of processors, and realizes the real-time digital simulation of the electric power system through a proper communication mode and task allocation. The flow of the test method is shown in fig. 1, and the simulation principle is as follows: transient process differential equations of the components and the system are described, then numerical methods are applied to solve, and the calculation results are output in the form of current and voltage through a power amplifier. However, the real-time power simulation test system is expensive, so that the wide application of the real-time power simulation test system in the relay protection device test is limited.
The relay protection tester can realize most of test items, can directly output alternating voltage, alternating current circuits, direct current voltage and direct current, and can change angles, frequencies and superpose higher harmonic components. However, the relay protection tester cannot simulate different system faults and output transient fault waveforms, and has certain limitation in relay protection test application.
In the power industry, in order to solve the problem of data exchange among different models of digital fault recording equipment, digital protection and microcomputer testing devices of different manufacturers, a common format (COMTRADE) for transient data exchange of a power system is defined. A COMTRADE format document typically includes four files: 1) title file (. hdr); 2) configuration file (. cfg); 3) data file (. dat); 4) information file (. inf), all file names must be identical. A fault recording file should contain at least a.cfg configuration file and a.dat data file.
The existing relay protection tester can realize the function of replaying fault waveforms, namely, a configuration file (. cfg) and a data file (. dat) are led into the tester, so that the output of fault current and voltage in the fault waveforms can be realized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the method for generating the transient fault waveform in the relay protection test, which can output the transient fault waveform by using the tester, is convenient to test and has low cost.
The invention is realized by the following technical scheme:
the invention relates to a method for generating a transient fault waveform in a relay protection test, which comprises the following steps,
step 1, calculating to obtain a transient fault waveform function corresponding to a fault type according to the fault type, the fault point position, the system impedance and the fault waveform characteristic parameter by combining a mathematical model of a power system fault theory;
step 2, inputting the fault waveform function obtained in the step 1 into simulation software, and adjusting simulation parameters to obtain a simulation waveform curve and sampling point data which are the same as the actual fault waveform;
step 3, storing the configuration information of the recording file including the number of sampling channels, the number of sampling points and the sampling frequency obtained from the actual waveform into a configuration file cfg according to a COMTRADE standard;
storing waveform data and sampling time obtained by simulation calculation into a recording data file dat according to a COMTRADE standard;
and 4, importing the generated configuration file, cfg and wave recording data file and dat into a relay protection tester for playback, and generating fault current or voltage according to the transient fault waveform to test the relay protection device.
Preferably, when the recording data file is generated according to the COMTRADE standard, the first column is a sampling number serial number, the second column is a sampling time stamp, and then, the analog channel data and the digital channel data are sequentially generated.
Preferably, the simulation software adopts MATLAB simulation software.
Compared with the prior art, the invention has the following beneficial technical effects:
according to the invention, fault waveforms are analyzed in a simulation manner and transient fault waveform files are generated quickly and accurately, so that relay protection testers can complete transient fault tests of relay protection devices, configuration files and wave recording data files can be generated without using a real-time power digital simulation test system, playback is realized through a tester, the method is low in cost, and the use is extremely convenient and quick; meanwhile, the problem that a conventional relay protection tester cannot directly generate different transient fault waveforms is solved, and the practical significance is high in practical test.
Drawings
Fig. 1 illustrates a conventional relay protection device testing method.
Fig. 2 shows a relay protection device testing method according to the present invention.
Fig. 3 test waveforms as required in the test standard.
Fig. 4 simulates a software generated fault current waveform.
Fig. 5 shows a fault current waveform played back by the relay protection tester.
Fig. 6 a COMTRADE profile generated according to the present method.
Fig. 7 a COMTRADE data file generated according to the method.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
In the method for generating the transient fault waveform in the relay protection test, as shown in fig. 2, firstly, the fault waveform is mathematically analyzed by combining the basic principle of power system analysis. And inputting the obtained fault waveform function into simulation software to obtain a group of corresponding fault waveform data. According to the COMTRADE file format, the fault waveform file is respectively generated into a corresponding configuration file (. cfg) and a data file (. dat), and then a group of COMTRADE standard fault recording files can be obtained. And importing the recording file into a relay protection tester with a playback function, so that a fault waveform identical to the function description can be output.
The preferred embodiment takes the permanent fault-20 times of large current used in the transient performance test of the test item in the national network company standard Q/GDW 11015-2013 analog input type merging unit detection specification as an example, and the current waveform is shown in fig. 3. There is no fault current waveform ready for actual testing. Firstly, according to the fault analysis principle of a power system, fault current is formed by superposing a sinusoidal alternating current component and an exponentially decaying direct current component, and the general mathematical function expression of the fault current is as follows:
wherein,
Iamis the amplitude of the sinusoidal alternating current component;
f is the frequency of the sinusoidal alternating current component, which is usually the same as the power frequency;
is the initial phase angle of the sinusoidal alternating current component;
Idmis the initial value of the direct current component;
τ is the decay time constant of the dc component.
The maximum fault current was 53.882A according to the test standardThe decay time constant was 100 ms. By adjusting Iam、Idmτ, a waveform consistent with the test requirements can be obtained.
The same waveform can be obtained by inputting the function into Matlab, as shown in fig. 4. The cfg file is generated in accordance with the format of the COMTRADE standard configuration file, as shown in fig. 5, and contains the number of channels, channel coefficients, sampling frequency, number of sampling points, and the amount of trigger time.
Fig. 6 is a data file generated according to the COMTRADE standard. The first column is a sampling number serial number, the second column is a sampling time mark, and then, the analog channel data and the digital channel data are sequentially arranged. In this example there is only one analog channel.
And storing the obtained waveform into a configuration file and a data file according to the COMTRADE format configuration, and introducing the configuration file and the data file into a relay protection tester for playback. As shown in fig. 7, opening the obtained configuration file with a waveform playback tool may result in the same fault waveform as fig. 3 and 4.
Claims (3)
1. The method for generating the transient fault waveform in the relay protection test is characterized by comprising the following steps,
step 1, calculating to obtain a transient fault waveform function corresponding to a fault type according to the fault type, the fault point position, the system impedance and the fault waveform characteristic parameter by combining a mathematical model of a power system fault theory;
step 2, inputting the fault waveform function obtained in the step 1 into simulation software, and adjusting simulation parameters to obtain a simulation waveform curve and sampling point data which are the same as the actual fault waveform;
step 3, storing the configuration information of the recording file including the number of sampling channels, the number of sampling points and the sampling frequency obtained from the actual waveform into a configuration file cfg according to a COMTRADE standard;
storing waveform data and sampling time obtained by simulation calculation into a recording data file dat according to a COMTRADE standard;
and 4, importing the generated configuration file, cfg and wave recording data file and dat into a relay protection tester for playback, and generating fault current or voltage according to the transient fault waveform to test the relay protection device.
2. The method for generating a transient fault waveform in a relay protection test according to claim 1, wherein when the recording data file is generated according to a COMTRADE standard, a first column is a sampling number serial number, a second column is a sampling time stamp, and then, analog channel data and digital channel data are sequentially generated.
3. The method for generating a transient fault waveform in a relay protection test according to claim 1, wherein the simulation software adopts MATLAB simulation software.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108536116A (en) * | 2018-02-08 | 2018-09-14 | 中国电力科学研究院有限公司 | A kind of test method and system of governing system |
| CN108647479A (en) * | 2018-07-03 | 2018-10-12 | 广东电网有限责任公司 | A kind of surge arrester failure transient-wave diagnostic method and device |
| CN109101714A (en) * | 2018-08-02 | 2018-12-28 | 云南电网有限责任公司昆明供电局 | A method of verifying protective relaying device logic function |
| CN109583014A (en) * | 2018-10-19 | 2019-04-05 | 广东电网有限责任公司电力调度控制中心 | DC voltage ripple factor calculation method and system based on fault recorder data |
| CN110672969A (en) * | 2019-11-05 | 2020-01-10 | 国网黑龙江省电力有限公司电力科学研究院 | On-site line protection device field test system |
| CN111157940A (en) * | 2020-01-09 | 2020-05-15 | 广东电科院能源技术有限责任公司 | Flexible direct-current electronic transformer simulation system |
| CN111208466A (en) * | 2020-02-19 | 2020-05-29 | 中国电力科学研究院有限公司 | Method and system for carrying out on-site verification on transient characteristics of direct-current voltage measuring device |
| CN112379837A (en) * | 2020-11-13 | 2021-02-19 | 许继集团有限公司 | Method and device for generating wave recording file of feeder terminal |
| CN112578276A (en) * | 2020-11-24 | 2021-03-30 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Relay protection dynamic performance test system |
| CN113420409A (en) * | 2021-05-17 | 2021-09-21 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
| CN113607992A (en) * | 2021-09-08 | 2021-11-05 | 广东电网有限责任公司 | Detection wave generation method of direct current distribution protection device and related device |
| CN113609671A (en) * | 2021-08-02 | 2021-11-05 | 上海置信智能电气有限公司 | Fault recording file generation method and device based on simulation software |
| CN116298440A (en) * | 2023-05-18 | 2023-06-23 | 国电南瑞科技股份有限公司 | State sequence simulation method for realizing coupling of multisource abnormal working conditions of power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201191762Y (en) * | 2008-01-30 | 2009-02-04 | 华东电网有限公司 | Relay protection failure information processing apparatus graphically displaying position change of protection switch |
| CN102200560A (en) * | 2011-05-20 | 2011-09-28 | 重庆电力科学试验研究院 | Function test platform and method for transformer relaying protection device based on real time digital system (RTDS) |
| CN102200561A (en) * | 2011-05-20 | 2011-09-28 | 重庆电力科学试验研究院 | Function test platform and method for bus relaying protection device based on real time digital system (RTDS) |
| CN102496930A (en) * | 2011-12-28 | 2012-06-13 | 浙江省电力公司 | Remote inversion method of internal action logic of protection device |
| CN103605021A (en) * | 2013-11-18 | 2014-02-26 | 国家电网公司 | A detection method for a line relay protection device |
-
2015
- 2015-03-19 CN CN201510122243.7A patent/CN104698235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201191762Y (en) * | 2008-01-30 | 2009-02-04 | 华东电网有限公司 | Relay protection failure information processing apparatus graphically displaying position change of protection switch |
| CN102200560A (en) * | 2011-05-20 | 2011-09-28 | 重庆电力科学试验研究院 | Function test platform and method for transformer relaying protection device based on real time digital system (RTDS) |
| CN102200561A (en) * | 2011-05-20 | 2011-09-28 | 重庆电力科学试验研究院 | Function test platform and method for bus relaying protection device based on real time digital system (RTDS) |
| CN102496930A (en) * | 2011-12-28 | 2012-06-13 | 浙江省电力公司 | Remote inversion method of internal action logic of protection device |
| CN103605021A (en) * | 2013-11-18 | 2014-02-26 | 国家电网公司 | A detection method for a line relay protection device |
Non-Patent Citations (3)
| Title |
|---|
| 梁贵书，杨良: "电力系统暂态故障模拟再现系统", 《河北电力技术》 * |
| 秦倩: "基于故障录波数据的继电保护动作特性分析系统", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 罗维康: "继电保护仿真实验系统的开发", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (18)
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| CN108536116A (en) * | 2018-02-08 | 2018-09-14 | 中国电力科学研究院有限公司 | A kind of test method and system of governing system |
| CN108647479A (en) * | 2018-07-03 | 2018-10-12 | 广东电网有限责任公司 | A kind of surge arrester failure transient-wave diagnostic method and device |
| CN108647479B (en) * | 2018-07-03 | 2020-11-17 | 广东电网有限责任公司 | Lightning arrester fault transient waveform diagnosis method and device |
| CN109101714A (en) * | 2018-08-02 | 2018-12-28 | 云南电网有限责任公司昆明供电局 | A method of verifying protective relaying device logic function |
| CN109583014B (en) * | 2018-10-19 | 2023-06-09 | 广东电网有限责任公司电力调度控制中心 | DC voltage ripple coefficient calculation method and system based on fault wave recording data |
| CN109583014A (en) * | 2018-10-19 | 2019-04-05 | 广东电网有限责任公司电力调度控制中心 | DC voltage ripple factor calculation method and system based on fault recorder data |
| CN110672969A (en) * | 2019-11-05 | 2020-01-10 | 国网黑龙江省电力有限公司电力科学研究院 | On-site line protection device field test system |
| CN111157940A (en) * | 2020-01-09 | 2020-05-15 | 广东电科院能源技术有限责任公司 | Flexible direct-current electronic transformer simulation system |
| CN111208466A (en) * | 2020-02-19 | 2020-05-29 | 中国电力科学研究院有限公司 | Method and system for carrying out on-site verification on transient characteristics of direct-current voltage measuring device |
| CN112379837A (en) * | 2020-11-13 | 2021-02-19 | 许继集团有限公司 | Method and device for generating wave recording file of feeder terminal |
| CN112578276A (en) * | 2020-11-24 | 2021-03-30 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Relay protection dynamic performance test system |
| CN113420409A (en) * | 2021-05-17 | 2021-09-21 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
| CN113420409B (en) * | 2021-05-17 | 2022-12-20 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
| CN113609671A (en) * | 2021-08-02 | 2021-11-05 | 上海置信智能电气有限公司 | Fault recording file generation method and device based on simulation software |
| CN113607992A (en) * | 2021-09-08 | 2021-11-05 | 广东电网有限责任公司 | Detection wave generation method of direct current distribution protection device and related device |
| CN113607992B (en) * | 2021-09-08 | 2023-07-21 | 广东电网有限责任公司 | Detection wave generation method of direct current power distribution protection device and related device |
| CN116298440A (en) * | 2023-05-18 | 2023-06-23 | 国电南瑞科技股份有限公司 | State sequence simulation method for realizing coupling of multisource abnormal working conditions of power system |
| CN116298440B (en) * | 2023-05-18 | 2023-09-29 | 国电南瑞科技股份有限公司 | State sequence simulation method for realizing coupling of multisource abnormal working conditions of power system |
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