摘要
鉴于同走廊并行的不同电压等级不同塔运行的输电线路之间的耦合性很强,为研究同走廊并行架设的750 kV输电线路和330 kV输电线路之间的电气不平衡,仿真分析了同走廊输配电线路感应电压产生的原因及其影响因素。采用ATP-EMTP建立了系统等效模型,结果表明750 kV输电线路对同走廊并行的330 kV输电线路有明显的静电感应电压,互相之间的电磁感应电压并不明显;750 kV输电线路对330 kV配电线路之间的影响与输送功率有关,线路功率越大,330 kV配电线路三相电压不平衡越严重,反之亦然。
In view of the strong coupling between the parallel transmission lines of different voltage levels and different towers running in the common corridor,in order to study the electrical imbalance between the 750 kV transmission line and the 330 kV transmission line erected in the common corridor,the causes and influencing factors of induced voltage in transmission and distribution lines in the same corridor are analyzed by simulation.The system equivalent model is established by using ATP-EMTP.The results show that the 750 kV transmission line has obvious electrostatic induction voltage to the 330 kV transmission line parallel to the corridor,and the electromagnetic induction voltage between them is not obvious.The impact of 750 kV transmission lines on 330 kV distribution lines is related to the transmission power.The greater the line power,the more serious the three-phase voltage imbalance of 330 kV distribution lines,and vice versa.
作者
包艳艳
张广东
刘康
温定筠
郭陆
王海龙
BAO Yanyan;ZHANG Guangdong;LIU Kang;WEN Dingjun;GUO Lu;WANG Hailong(State Grid Gansu Electric Power Research Institute,Lanzhou 730070,China)
出处
《电工技术》
2021年第5期53-55,共3页
Electric Engineering
关键词
电气不平衡
感应电压
仿真计算
同走廊并行
electrical imbalance
induced voltage
simulation calculation
parallel to the corridor
