220kV轴向分裂变压器低压绕组频率响应测试异常分析研究

SHI Dong-wei, LIU Shi-fu, MAO Qing-bo, WANG Zhi-xin, LIU Dao, GONG Xiu-zhong

Transformer(2023)

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Abstract
220kV轴向分裂变压器在进行频率响应测试时,低压绕组经常会出现明显变形甚至严重变形的试验结果.本文作者以某220kV轴向分裂变压器交接时频率响应测试异常为例,通过对频率响应测量试验原理、产品结构以及各种试验的综合分析,对比同类型变压器低压绕组测试结果,明确了低压结构对频率响应测试的影响,发现频率响应分析法对该类型变压器低压侧绕组变形判定不准确,提出了采用电抗法进行分析研究的建议.
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Key words
Transformer,Frequency response,Electroreactive method,Winding deforma-tion
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