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电网技术  2009 

特高压变压器差动保护现场试验

, PP. 19-23

Keywords: 1,000,kV变压器,差动保护,电流极性,现场试验

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Abstract:

晋东南特高压交流变电站1000kV变压器采用调压变与补偿变共体、主变与调压补偿变相互独立的结构,该变压器的差动保护极性要求特殊,既要满足调压变和补偿变差动保护共用TA的不同极性要求,又要解决正反调压时引起的电流极性改变问题。文章对1000kV变压器的调压补偿变进行了差动保护配置,分析了调压补偿变差动保护的TA极性,研究了调压补偿变差动保护的现场试验方法。调压补偿变差动保护现场试验结果表明1000kV变压器采用的结构能满足差动保护对TA极性的特殊要求。

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