Identification Method of Transient Electromagnetic Disturbance in Secondary Equipment of Gas Insulated Substation
A secondary equipment, gas-insulated technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., which can solve the problems of limited number of switching operations, limited data quantity, and unrepresentative waveform characteristics.
Inactive Publication Date: 2017-11-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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However, the number of switching operations in the actual GIS substation is limited, so that the amount of data that can be obtained is limited, and the summarized waveform characteristics do not have a good representative meaning
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[0020] The invention provides a method for identifying transient electromagnetic disturbances in secondary equipment of a gas-insulated substation, which will be described below in conjunction with the accompanying drawings.
[0021] The identification method for the transient electromagnetic disturbance in the UHV GIS is to collect the electromagnetic waveform data caused by the switching operation of the secondary equipment of the substation, perform statistical analysis, and extract the waveform characteristic parameters measured and recorded on the secondary equipment of the UHV GIS substation. Define the comparison of waveform characteristic parameters, so as to determine that transient electromagnetic disturbance has occurred during the recording period; including the following steps:
[0022] 1) Select a test UHV GIS full-scale true simulation test circuit with variable branch bus length, various types of isolating switch test products, multi-point synchronous measuremen...
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The invention discloses a method for identifying transient electromagnetic disturbance of a secondary device of a gas insulation substation, and belongs to the field of electromagnetic compatibility of the secondary device of the substation. The method includes the steps of collecting electromagnetic waveform data caused by switching operation of the secondary device of the substation, conducting statistic analysis, extracting waveform characteristic parameters measured and recorded on the secondary device of the ultra-high voltage GIS substation, comparing the waveform characteristic parameters with definition waveform characteristic parameters, and accordingly judging that the transient electromagnetic disturbance occurs in the measurement and recording period. According to the method, a large number of tests are performed, statistic analysis is carried out on the data, the typical waveform parameters are obtained, and the actual vary-fast transient electromagnetic disturbance occurring in the ultra-high voltage substation can be accurately judged; the method is of great guide significance in monitoring and protection of the ultra-high voltage secondary device.
Description
technical field [0001] The invention belongs to the field of electromagnetic compatibility of secondary equipment of a substation, in particular to a method for identifying transient electromagnetic disturbances of secondary equipment of a gas-insulated substation. Background technique [0002] The transient electromagnetic disturbance caused by the switching operation of GIS (gas insulated) substation has the characteristics of short rise time and wide frequency bandwidth, so it is also called ultra-fast transient electromagnetic disturbance. In the field of electromagnetic compatibility of substation secondary equipment, the threat of ultra-fast transient electromagnetic disturbance to secondary equipment is the most serious. my country's power grid has developed to the UHV stage. According to experience, the electromagnetic compatibility problem in higher voltage levels will be more severe. There is an urgent need to study the EMC problems of UHV GIS substations, especia...
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IPC IPC(8): G01R31/00
Inventor 刘骁繁崔翔吴恒天嵇建飞焦重庆王强
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)