2024年 06期

Fault Diagnosis Method of Transformer Tap-changers Based on Frequency Response Analysis


摘要(Abstract):

为了准确诊断电力变压器分接开关故障类型,提出一种基于频率响应分析的变压器分接开关故障诊断方法;利用Simulink仿真工具提出并设计电气等效电路模型,针对结焦、点蚀2种常见分接开关故障,利用频率响应分析特征曲线分析变压器分接开关的物理故障敏感性,对开路端对端、短路端对端和绕组间电感和电容进行实验测试。结果表明:使用频率响应分析测量值可以准确识别变压器分接开关触头结焦、点蚀故障,结焦会对利用开路的电路端到端、短路端到端、电容绕组和电感绕组4种不同测量配置得出的频率响应分析特征造成显著影响,但点蚀故障的影响仅在电感绕组配置中出现。

关键词(KeyWords): 变压器;分接开关;频率响应分析;故障检测;等效电路

基金项目(Foundation): 国家自然科学基金项目(62362017);; 内蒙古自治区自然科学基金项目(2021BS05005)

作者(Author): 杨玥,郭红兵,陈波,李培强,神显豪

DOI: 10.13349/j.cnki.jdxbn.20240911.001

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