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高压电器  2014 

团林换流站高压直流电压异常波动分析与处理

, PP. 111-118

Keywords: 直流输电,直流分压器,突变量保护,电压波动,接地故障

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Abstract:

2011年5月5日,±500kV团林换流站直流线路低电压保护先后动作两次,通过对故障录波分析、RTDS仿真、理论计算等方法判断实际直流线路无故障,动作原因为团林换流站高压直流母线分压器测量电压异常波动引起。笔者介绍了团林换流站高压直流电压异常波动详细过程及原因,并提出了对直流分压器二次测量回路进行接地故障点检测的建议,成功解决了高压直流电压异常波动故障,消除了可能引起直流系统停运的隐患。

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