Research on Electromagnetic Interference of Lightning Impact Test on Secondary Equipment of Primary and Secondary Distribution Switches
[1]Cheng XianJianpeng ZhuZhao HaiyangYuan XiaodongHe XiangXu Mingming.Research on Electromagnetic Interference of Lightning Impact Test on Secondary Equipment of Primary and Secondary Distribution Switches[J].Journal of Zhengzhou University (Engineering Science),2020,41(04):65-72.[doi:10.13705/j.issn.1671-6833.2020.04.006]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41
Number of periods:
2020 04
Page number:
65-72
Column:
Public date:
2020-08-12
- Title:
- Research on Electromagnetic Interference of Lightning Impact Test on Secondary Equipment of Primary and Secondary Distribution Switches
- Keywords:
- primary and secondary equipment; lightning impulse voltage; feeder terminals; spectrum distribution; Anti-electromagnetic interference
- CLC:
- -
- Abstract:
- The standardization and integration development of primary and secondary equipment of power distribution switches puts forward higher requirements for the reliable operation of secondary equipment under long-term complex electromagnetic environment. This paper builds a lightning impulse voltage test platform, and collect the secondary side of the voltage transformer, the feeder terminal unit (FTU) input and output voltage signals, and analyze the above-mentioned waveform to obtain the electromagnetic interference spectrum distribution of the secondary device port caused by the impulse voltage, which is effectively suppressed by the filtering method. The test results show that the lightning impulse will produce transient high frequency electromagnetic interference to the voltage transformer and feeder terminal unit, the peak value of the interference voltage caused by radiation coupling is about 3kV, the frequency band is 3.6~ 16.4MHz the peak value of the interference voltage caused by conduction coupling is about 4.5kV, the frequency bands are mainly distributed between 1.2~6.7MHz and 12.5~20MHz, after adding the filter, the positive and negative interference voltage peaks are reduced by more than 23%, and no fault occurs. The test results provide reference for the EMC research of secondary equipment for primary and secondary fusion distribution switches
- References:
- -
- Similar References:
Memo
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Last Update:
2020-10-06
