低温下油浸式互感器电气参数温度特性分析及绝缘状态定量诊断方法  

Temperature Characteristic Analysis of Electrical Parameters and Quantitative Diagnosis Method of Insulation Condition of Oil-immersed Transformer at Low Temperature

作　　者：杨代勇 于群英 夏天贺 冯世涛 司昌健 李守学 刘春博 YANG Daiyong;YU Qunying;XIA Tianhe;FENG Shitao;SI Changjian;LI Shouxue;LIU Chunbo(State Grid Jilin Electric Power Company Limited Electric Power Research Institute,Changchun 130021,China;Energy China Road and Bridge Engineering Construction Company Limited,Tianjin 300203,China;State Grid Jilin Electric Power Company Limited,Changchun 130028,China)

机构地区：[1]国网吉林省电力有限公司电力科学研究院,长春130021 [2]中能建路桥工程有限公司,天津300203 [3]国网吉林省电力有限公司,长春130028

出　　处：《吉林电力》2022年第6期17-21,42,共6页Jilin Electric Power

基　　金：国家电网有限公司科技项目(KY-SG-2017-1-JLDKY)。

摘　　要：针对油浸倒立式电流互感器和油浸式电容电压互感器的特点,在低温环境(-60~0℃)范围内开展了常规介质损耗因数测试、频域谱测试和电容量温度特性试验研究,应用电介质理论对两种互感器介质损耗因数低温特性相同和电容量低温特性相反的原因进行了分析,利用温度-频率平移换算,提出了一种低温下油浸式互感器介质损耗因数频率特性曲线和温度特性曲线的换算方法,实现了油浸式互感器绝缘状态的定量诊断评估。For the oil immersed inverted current transformer and oil immersed capacitor voltage transformer,the conventional dielectric loss factor test,frequency spectrum test and capacitance temperature characteristic test were carried out in the low temperature environment(-60~0℃).The reasons for the same low temperature characteristics of the dielectric loss factor and the opposite low temperature characteristics of the capacitance of the two transformers were analyzed using dielectric theory,and the temperature frequency translation conversion was used,A conversion method of dielectric loss factor frequency characteristic curve and temperature characteristic curve of oil immersed transformer at low temperature is proposed,which realizes quantitative diagnosis and evaluation of insulation state of oil immersed transformer.

关 键 词：油浸式互感器 介质损耗因数 频域介电谱 故障诊断 

分 类 号：TM855[电气工程—高电压与绝缘技术]