Abstract：As nonlinear loads largely increases and much more power electronic devices being used, harmonics and active component increases a lot in the grounding fault current. After compensating the reactive current, residual current is enough to maintain the arc, which may cause overvoltage and fault continue to develop. This paper proposes an electromagnetic hybrid petersen coil(EHPC) based on magnetically controllable reactor(MCR) and active power compensator(APC), expounds it’s two operating statuses and principle, analyses the factors of influence of frequency scanning to ground capacitor and proposes an improving method. We also discuss the relationship of neutral displacement voltage, fault phase voltage, zero sequence current and grounding fault current, put forward a decoupling compensating and flexible control strategy pointing at the active, reactive and harmonic component of grounding fault current. Simulations and experiments verify that grounding fault current can be fully compensated fast and effectively, meeting both the requirement of current and voltage, suggesting the correctness and feasibility of the principle and the control strategy.
陈柏超, 王朋, 沈伟伟, 田翠华, 魏亮亮, 涂志康. 电磁混合式消弧线圈的全补偿故障消弧原理及其柔性控制策略[J]. 电工技术学报, 2015, 30(10): 311-318.
Wang Peng, Chen Baichao, Shen Weiwei, Tian Cuihua, Wei Liangliang, Tu Zhikang. The Principle of Full Compensation Arc Suppression and Flexible Control of Electromagnetic Hybrid Petersen Coil. Transactions of China Electrotechnical Society, 2015, 30(10): 311-318.
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2015, Vol. 30 
