摘要
应用ATP/EMTP电磁暂态仿真软件对某地区220kV高压交流电缆的合闸过电压进行研究,建立了过电压的仿真计算模型,计算了过电压水平,并分析了合闸电压特性及其影响因素。此外,还研究了屏蔽层接地方式、合闸相角、残余电位水平对电缆过电压的影响及合闸过电压的规律,提出了抑制合闸过电压的措施。研究成果对工程中合闸过电压检测与抑制具有指导意义。
This paper investigated the characteristics of the closing overvoltage of 220kV voltage cable by using ATP/EMTP.First,the model of the HV cables was built.The closing overvoltage was calculated and the characteristics of closing voltage and its influencing factors were analyzed.Moreover,the closing overvoltage was studied in the conditions of different shield earths,closing angle and levels of the residual potential.The measures to suppress closing overvoltage were proposed.This researching funding provided a guideline for the detection and prevention of engineering overvoltage.
作者
何学锦
邹国平
曹俊平
刘浩军
杨仕友
HE Xuejin;ZOU Guoping;CAO Junping;LIU Haojun;YANG Shiyou(College of Electrical Engineering,Zhejiang University,Hangzhou 310027,China;State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China)
出处
《电工技术》
2019年第1期18-20,25,共4页
Electric Engineering
