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| An accident analysis of simultaneous blocks of bipolar four valves manifold in ultra high voltage direct current system caused by wildfires |
| Peng Yonglai, Chen Chaoquan, He Hongzi |
| Dali Bureau,EHV Power Transmission Company,Dali,Yunnan 671000 |
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Abstract Xinsong station is currently the highest ultra high voltage station in the world with the highest altitude and the strongest seismic level. The Xinsong-Dongfang ultra high voltage direct current system is one of the 12 key transmission channels in the national air pollution prevention and control action plan, with a transmission distance of about 1953km and a transmission capacity of 5000MW. Analysis of simultaneous blocks of bipolar four valves manifold in ultra high voltage direct current system through the validation of the protection criterion and TFR waveform analysis, program logic analysis, combined with line observation, points out the fault to direct current line directly caused by wildfires, there is a certain guiding significance for the new fault in the future.
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Received: 19 April 2020
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Peng Yonglai,Chen Chaoquan,He Hongzi. An accident analysis of simultaneous blocks of bipolar four valves manifold in ultra high voltage direct current system caused by wildfires[J]. Electrical Engineering, 2020, 21(11): 119-124.
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http://dqjs.cesmedia.cn/EN/Y2020/V21/I11/119
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2020, Vol. 21 
