一起35kV站用变低压绕组介损超标问题的分析与处理  

Analysis and Treatment of Dielectric Loss Exceeding Standard of 35kV Transformer Winding

作　　者：朱庆民 沈花林 关银环 马国勤 ZHU Qingmin;SHEN Hualin;GUAN Yinhuan;MA Guoqin(Wujiang Transformer Co.,Ltd.,Suzhou 215200,China)

机构地区：[1]吴江变压器有限公司,江苏苏州215200

出　　处：《变压器》2025年第4期71-75,共5页Transformer

摘　　要：绕组介质损耗因数(tanδ)测量是鉴别变压器在高电压作用下绝缘性能可靠性的试验,tanδ测试值是判断变压器绝缘状态的重要指标。本文中笔者以两台SZ13-800/35站用变为例,对影响tanδ的回路电容和电阻测试值进行对比分析,确定低压绕组介损超标的原因并给出改进建议,为相关制造厂在同类问题分析时提供参考。Winding dielectric loss factor(tans)measurement is a test to identify the reliability of transformer insulation performance at high voltages.The tans test value is an important index to judge the insulation state of transformer.In this paper,taking two SZ13-800/35 station transformers as examples,the author compares and analyzes the test values of the loop capacitance and resistance which affect tans,determines the cause of the dielectric loss exceeding the standard of low-voltage windings,and gives some suggestions for improvement,to provide reference for related manufacturers in the analysis of similar problems.

关 键 词：变压器 介质损耗因数 铁心绝缘漆 

分 类 号：TM406[电气工程—电器]