老化对特高压变压器油纸绝缘介电特性及特征量的影响  

Effect of Aging on Dielectric Characteristic and Characteristic Parameter of Oil-Paper Insulation in UHV Transformer

作　　者：李唐兵 童军心 童涛 李伟伟 LI Tang-bing;TONG Jun-xin;TONG Tao;LI Wei-wei(Power Science Research Institute of State Grid Jiangxi Electric Power Co.,Ltd.,Nanchang 330096,China;State Grid Jiangxi Electric Power Co.,Ltd.,Nanchang 330077,China)

机构地区：[1]国网江西省电力有限公司电力科学研究院,江西南昌330096 [2]国网江西省电力有限公司,江西南昌330077

出　　处：《变压器》2021年第7期19-24,共6页Transformer

摘　　要：为研究老化对特高压变压器油纸绝缘介电特性及特征量的影响,选用热老化温度为130℃对油浸纸板进行老化试验,采用弛豫模型对介电谱测试结果进行拟合,提取模型特征参量来评估绝缘的老化程度。In order to study the effect of aging on the dielectric properties and characteristic parameter of oil-paper insulation in UHV transformer,an aging test of oil-impregnated paperboard is carried out with thermal aging temperature of 130°C,and the dielectric spectrum test results are fitted by Havriliak-Negami(HN)relaxation model.The model characteristic parameters are extracted to evaluate the aging degree of insulation.

关 键 词：变压器 油纸绝缘 老化 介电谱 特征参量 

分 类 号：TM404[电气工程—电器]