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Operational mode analysis of transformer neutral point
Author(s): 
Pages: 115-118
Year: Issue:  5
Journal: Relay

Keyword:  变压器中性点过电压零序通路;
Abstract: 通过对中性点不接地系统防止系统过电压措施、中性点接地对电力系统的影响进行分析,特别对操作、断线、单相接地、雷击等不同情况下中性点处出现的过电压进行分析,同时结合零序通路问题,总结出变压器中性点接地方式的选择应考虑系统零序阻抗、零序电流的分布、N-1对系统运行方式的影响等因素,做到不使接地点数目过多,以避免零序网络过于复杂、零序保护的定值不好整定、零序保护的各段保护之间不易配合,也不能因为接地点太少...
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