一种广域差动保护实现方法

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Abstract The wide-area protection is one of the important directions for the development of relay protection, and wide-area differential protection is an important branch. In this paper, the overall architecture of the wide-area differential protection based on IEC61850 is proposed, the basic concepts of the differential ring is defined, and action criterion and method of the wide-area differential protection is proposed. The blocking conditions of the wide-area differential protection are described, and the dynamic extension of differential ring in case of a branch failure is analyzed. The wide-area differential protection based on the differential ring is effective solution to the existing failure protection easy to malfunction and the dead zone fault. Dynamic simulation system verifies the feasibility and correctness of the proposed method.

Key words： Wide-area protection differential protection differential ring failure protection

Received: 10 May 2013 Published: 18 June 2014

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TM77

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	Articles by authors
	Zhang Zhaoyun
	Chen Wei
	Zhang Zhe
	Chen Deshu

Cite this article:

Zhang Zhaoyun,Chen Wei,Zhang Zhe等. A Method of Wide-Area Differential Protection[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 297-303.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I2/297

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