基于证据理论融合的广域后备保护新方法

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Abstract In order to reduce the communication traffic of wide-area backup protection(WABP) and improve the correctness of its decision-making in the case of information wrong or missing, the paper proposes a new algorithm of WABP based on the evidence theory fusion. After power grid is fault, each substation uploads only a small amount of lines’current information according to action case of start element of line and distribution characteristics of fault component current of power grid. The current information which is compared by master substation to identify a few candidate suspiciously fault lines. Then master station obtains traditional protection information from therelevant substations of protection information domain of the suspected fault line. Master substation identifies the actual fault line by evidence theory fusion with the traditional protection information. The simulation examples show that the new WABP algorithm has the excellent performance of low sampling synchronization requirement, small wide area communication traffic, and correct decision even when some of information are wrong or missing.

Key words： Wide area backup protection distribution characteristics of fault component current a group of fault component current comparing their amplitude D-S evidence theory

Received: 31 August 2012 Published: 05 November 2014

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TM77

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	Chen Guoyan
	Zhang Zhe
	Yin Xianggen
	Yao Yao
	He Zhiqin

Cite this article:

Chen Guoyan,Zhang Zhe,Yin Xianggen等. A New Algorithm of Wide Area Backup Protection Based on Evidence Theory Fusion[J]. Transactions of China Electrotechnical Society, 2014, 29(10): 246-255.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I10/246

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