不依赖双侧时钟同步的输电线双端行波测距

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Abstract It is difficult to implement two-ended fault location method between the travelling wave recorders made by different companies, because of the method's strict reliance on remote data and two ended time synchronization. To solve this problem, coordinated double-ended travelling wave fault location method independent of two side time synchronization is proposed in this paper. The features patterns of faulted surge arrival sequence were analyzed: After eliminating the disturbance caused from sound lines by comparing amplitude and phase in group, the sequence of surge arrival can be divided into two patterns. In fierce faulted pattern, faulted travelling waves approximatively propagate independently in two separated segments composed by each monitored buses and faulted point, which makes the time delay consistent for adjacent surges at same side and the sum of corresponding time delay consistent for surges at separate sides. Refraction surges can be detected in weak faulted pattern, which makes sequence of surge arrival consistent at two terminals. The two faulted modes can be identified through matched sequence of initial and follow-up double-ended surges, and the separated two-ended data-driven based travelling wave fault location collaborative approaches independent of two-ended time synchronization were proposed. The proposed method is proven feasible and effective by both digital simulations and field data record.

Key words： Sequence of surge arrival surge matching ping-pong time synchronization travelling wave fault location dynamic time warping (DTW) data driven

Received: 21 October 2013 Published: 30 October 2015

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T77

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	Articles by authors
	Zhang Guangbin
	Shu Hongchun
	Yu Jilai
	Sun Xiangfei

Cite this article:

Zhang Guangbin,Shu Hongchun,Yu Jilai等. Double-Ended Travelling Wave Fault Location Independent of Two Side Time Synchronization[J]. Transactions of China Electrotechnical Society, 2015, 30(20): 199-209.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I20/199

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