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高压电器  2015 

高海拔变电站紫外检测异常现象分析

, PP. 99-104

Keywords: 电晕放电,紫外检测,高海拔,风力,昼夜温差,色漆

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Abstract:

500kV色尔古变电站的500kV设备场地电晕放电引起的可听噪声比其他500kV变电站明显要大。而紫外检测技术主要是通过观测高压电气设备周围电晕放电,来分析判断与电晕放电有关的电气缺陷或故障。笔者介绍了紫外检测在色尔古站的开展情况、实验室环境下避雷器均压环模拟试验和避雷器均压环电场仿真计算,针对紫外检测异常现象进行了详细分析,认为高海拔、风力大和昼夜温差大导致设备均压环相色漆剥落是造成电晕噪声明显偏大的主要原因,并提出了改进措施。

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