基于电压内积的带并联电抗器输电线路单相自适应重合闸

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Abstract In this paper, a single phase adaptive reclosure method for high voltage (HV) transmission lines with shunt reactors which based on inner products of voltage is proposed. Healthy phases voltage and fault phase voltage inner product are treated as initialization inner product, inner products of healthy phase voltage and derivative of fault phase voltage as compensation inner product when single-phase grounding fault appear and the fault phase ends of circuit breaker tripping. To permanent fault, the initialization inner product will keep smaller than compensation inner product in a short transient state, therefore, two inner product curve won't appear intersection. As for transient fault, in the second arc initial stage, the initialization inner product is smaller than the compensation inner product; with the increase of arc resistance, the initialization inner product increase while the compensation inner product decrease, they would have a point of intersection. After arc extinction, low-frequency oscillation is observed in two curves of voltage inner products which have 90° phase differences; they would also have points of intersection. According to this phenomenon, the point of intersection of voltage inner products are used to identify permanent and transient faults and to determine the transient fault has entered the stage of recovery voltage when the second intersection appears. The proposed algorithm needs no threshold which can easily operate and start when the circuit breaker single-phase tripping appears. It does not need to be calculated in frequency domain and not affected by low frequency oscillation component. The EMTP simulations and field data verified its correctness and effectiveness.

Key words： Transmission line adaptive reclosing fault arc inner product

Received: 29 May 2016 Published: 20 June 2017

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TM77

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	Articles by authors
	Luo Xunhua
	Huang Chun
	Jiang Yaqun
	Tang Tao
	Chen Hong

Cite this article:

Luo Xunhua,Huang Chun,Jiang Yaqun等. A Voltage Inner Product Based Approach for Single-Phase Adaptive Reclosure on Transmission Line with Shunt Reactors[J]. Transactions of China Electrotechnical Society, 2017, 32(11): 17-25.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I11/17

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