配电网消弧线圈新型调谐方式的研究

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Abstract The existing tuning method of post-set arc suppressing coil for distribution network is running at a status away from the resonance point when the system is normal and adjusting quickly to overcompensation when single-phase ground happens. In this paper, the defects of the method which includes long response time, high overvoltage level and misjudgment of fault line selection in high-resistance grounded situation are assessed through ATP-EMTP simulation. Based on the simulation results, a new tuning method of arc suppression coil is proposed. The new method is presetting arc suppression coil to 40% off degree when the system is normal and adjusting to overcompensation after a time window of 100ms, during which time accurate line selection utilizing characteristics of undercompensationis in progress, when single-phase ground is detected.The superiority of the new arc suppression coil tuning method is proved through simulation results.

Key words： arc suppressing coil undercompensation intermittent arc grounding grounding line selection evaluation and optimization

Received: 26 June 2014 Published: 23 January 2014

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	Xia Xiaofei

Cite this article:

Xia Xiaofei. The New Tuning Method of Arc Suppressing Coil for Distribution Network[J]. Electrical Engineering, 2013, 14(11): 16-21.

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http://dqjs.cesmedia.cn/EN/Y2013/V14/I11/16

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