不对称参数同塔四回线的综合横差保护方案

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Abstract Due to the asymmetrical parameters of the quadruple-circuit lines, a new method for transverse differential protection and line selection is proposed. Fault super-imposed networks of the quadruple-circuit lines are discussed, and sequence currents of each line are also calculated during a fault. According to the characteristics of sequence currents obtained by the protector, negative- component based transverse differential protection approach is proposed. Different connection schemes of transverse differential protection are considered, and the setting values of the protection are calculated corresponding to different schemes. All the signals of all the protections are acquired by line selection to judge which line to be cut off. Simulation results have verified the reliability and feasibility of the negative-component based transverse differential protection.

Key words： Quadruple-circuit lines asymmetrical line transverse differential protection sequence component line selection

Received: 10 August 2014 Published: 02 December 2016

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TM773

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	Liu Qi
	Tai Nengling
	Fan Chunju
	Yu Zhongan
	Shang Jin

Cite this article:

Liu Qi,Tai Nengling,Fan Chunju等. Transverse Differential Protection for Quadruple-Circuit Lines with Asymmetrical Parameters[J]. Transactions of China Electrotechnical Society, 2016, 31(22): 159-167.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I22/159

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