摘要
鉴于目前对线路过电压的研究大部分还停留在架空线路、短距离电缆线路、架空线路与电缆线路的混合线路,缺乏对长距离电缆线路过电压的分析,从多个因素出发,在EMTP电磁暂态仿真软件上搭建模型进行仿真计算。结果表明,在短距离时电缆线路不存在工频过电压,只需并联高压电抗器解决操作过电压问题,当线路较长时,需同时考虑工频过电压和操作过电压。
Most of the research on the overvoltage of transmission lines still stay in overhead lines,short-distance cable lines,overhead lines and cable lines,and are lack of analysis on the overvoltage of long-distance cable lines.Starting from many factors,this paper builds a model on EMTP electromagnetic transient simulation software and carries out simulation calculation.The results show that there is no power frequency overvoltage in short distance cable lines,and only voltage reactor in parallel is needed to solve the problem of operating overvoltage.When the line is long,both power frequency overvoltage and switching overvoltage need to be considered.
作者
陈宗正
张旭航
曹炜
CHEN Zong-zheng;ZHANG Xu-hang;CAO Wei(Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Electric Power Economic Research Institute,Shanghai 200001,China)
出处
《水电能源科学》
北大核心
2019年第12期136-139,共4页
Water Resources and Power
关键词
电缆
线路长度
EMTP
工频过电压
操作过电压
cable
line length
EMTP
power frequency overvoltage
operating overvoltage
