变压器油中局放宽带脉冲电流法带电检测方法研究  

Study on the Method of In-line Detection of Transformer Oil by Pulse Current Method

作　　者：董宇恒 曹晓源 DONG Yuheng;CAO Xiaoyuan(State Grid Ili Yihe Power Supply Co.,Ltd.,Huocheng County Power Supply Company,Ili 835000,China)

机构地区：[1]国网伊犁伊河供电有限责任公司霍城县供电公司,新疆伊犁835000

出　　处：《电工技术》2025年第3期60-62,65,共4页Electric Engineering

摘　　要：由于变压器运行环境复杂、局部放电故障频发,威胁整个电力系统的安全性,因此研究变压器油中局放宽带脉冲电流法带电检测方法。布设超宽带高频脉冲电流传感器带电捕捉变压器因油中局放现象产生的宽带脉冲电流信号,并对信号进行去噪处理,利用支持向量机分类去噪后的宽带脉冲电流信号,实现对变压器油中局放信号的带电检测。实验结果表明,在变压器油中局放带电检测中,设计方法可以获得不同油中局放模式下变压器放电信号信息,且与实际数据基本一致。Due to the complex operation environment of transformer and frequent partial discharge faults,which threaten the safety of the whole power system,a new method of in-line detection of transformer oil by using the pulse current method is studied.The ultra-wideband high-frequency pulse current sensor is set up to capture the wideband pulse current signal generated by the phenomenon of in-oil discharge,and the signal is denoised.The support vector machine is used to classify and denoise the wideband pulse current signal to realize the in-oil discharge mode detection.The experimental results show that the design method can obtain the discharge signal information of transformer under different discharge modes in transformer oil,and it is basically consistent with the actual data.

关 键 词：变压器油 局部放电 宽带脉冲电流法 带电检测 局放检测 

分 类 号：TM855[电气工程—高电压与绝缘技术]