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A method for compensating capacitance current influence on line current differential protection
Author(s): 
Pages: 5-9
Year: Issue:  15
Journal: RELAY

Keyword:  线路电流差动保护电容电流输电线路;
Abstract: 针对输电线路分布电容对差动保护的影响,提出了一种克服电容电流对其影响的保护方案.线路正常运行时,将相电流差动保护的定值整定为线路电容电流的2倍以上,零负序差动保护的定值整定为线路电容电流的1.5倍以上,可靠躲过线路正常运行时的电容电流.在线路空充时,将各差动保护的定值提高两倍同时增加一定的时延,可靠躲过暂态电容电流对各差动保护的影响.
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