高电压技术2011，Vol.37Issue(6)：1377-1383,7.
局部放电信号在交联聚乙烯高压电力电缆中的衰变及其检测
Decay and Detection of Partial Discharge Signals in High-voltage Cross-linked Polyethylene Power Cable
摘要
Abstract
A simplified model of transmission line of impedance distributed parameter weighted ratio and finite difference time-domain method were used in the calculation and electromagnetic simulation analysis of the attenuation spectrum characteristics of PD pulse in cables and joints,for the distinctive multi-layered semi-conducting insulation and complex metal shielding structure of cross-linked polyethylene cable.Meanwhile,models of insulated defects in power cable joints and three kinds of sensors were designed.Experiments on near-field and far-field in PD detection system of power cable show that the amplitude of partial discharge wave is similar to power function,and the wave shape is distorted.There is a good match between finite difference time-domain results,calculation of model of transmission line and measurements,The results are helpful for the partial discharge detection and defects identification in cross-linked polyethylene high-voltage power cables.关键词
高压电缆接头/绝缘缺陷模型/局部放电谱图/衰变特性/传感器/波形Key words
high-voltage cable joint/models of insulated defect/partial discharge spectrum/decay characteristic/sensor/wave分类
信息技术与安全科学引用本文复制引用
魏钢,唐炬,文习山,林俊亦..局部放电信号在交联聚乙烯高压电力电缆中的衰变及其检测[J].高电压技术,2011,37(6):1377-1383,7.基金项目
国家重点基础研究发展计划（973计划） （）
