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Effects of neutral earthing on the occurrence of sympathetic inrush in transformer
Author(s): 
Pages: 7-12
Year: Issue:  20
Journal: RELAY

Keyword:  变压器和应涌流起始涌流中性点;
Abstract: 和应涌流影响变压器的正常运行,目前认为将空载合闸变压器或运行变压器的中性点对地断开,是切断和应涌流通路,避免产生和应涌流的有效方法.通过仿真和试验研究,分析了变压器中性点接地状态对变压器和应涌流产生的影响,结果表明变压器的中性点断开并不能消除和应涌流的产生,而且运行变压器或空载合闸变压器中性点断开与否,一台变压器空载合闸,运行变压器中都有可能产生和应涌流,并且中性点在不同接地的不同组合状态下,运行变压器中产生的和应涌流是不相同的.
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