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高压电器  2015 

依800 kV特高压直流工程换流变压器阀侧对称加压局部放电试验的现场试验方法探讨

, PP. 136-140

Keywords: 换流变压器,对称加压,局部放电,现场试验,抗干扰

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Abstract:

长时感应电压(ACLD)带局部放电测量试验是检测变压器内部是否存在缺陷的最有效手段之一。笔者以±800kV特高压直流工程中Y-Δ换流变压器局部放电测量试验为对象,研究并成功实施了现场直接采用阀侧对称加压方式进行的ACLD带局部放电测量试验。详细介绍了该试验的试验原理及方法、试验参数的计算和现场实施情况,并对试验回路中采取的抗干扰措施进行了总结。试验结果验证了特高压换流变现场阀侧对称加压局部放电试验的可行性及有效性。

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