基于ATP-EMTP的330kV空载线路非同期合闸过电压研究  

Research on Asynchronous Closing Overvoltage of 330kV No load Transmission Line Based on ATP EMTP

作　　者：王国林 WANG Guolin

机构地区：[1]国网四川省电力公司德阳供电公司,四川德阳618000

出　　处：《青海电力》2021年第2期38-40,53,共4页Qinghai Electric Power

摘　　要：实践表明,分相操作机构的断路器非同期合330 kV空载线路时,合闸电阻、残余电荷等因素对操作过电压的影响很大,研究其影响规律对于生产实际非常重要。文章考虑在B相合闸时间落后A相5 ms和C相合闸时间落后A相2 ms条件下,分析合闸电阻、接入时间、合闸相位和残余电荷对操作过电压的影响。并得出结论:断路器并联的合闸电阻、合闸电阻接入的时间和空载线路上的残余电荷对操作过电压影响较大,合闸时电源的相位对操作过电压影响较小。Practice has shown that when the circuit breaker of the split phase operating mechanism closes the 330 kV no load line asynchronously,the closing resistance,residual charge and other factors have a great influence on the operating overvoltage.The study of its influence law is very important to the actual production.The article considers the influence of closing resistance,access time,closing phase and residual charge on the operating overvoltage under the condition that the closing time of phase B is 5 ms behind that of phase A and the closing time of phase C is 2 ms behind that of phase A.And it is concluded that the parallel closing resistance of the circuit breaker,the time when the closing resistance is connected,and the residual charge on the no load circuit have a greater impact on theoperating overvoltage,and the phase of the power supply during closing has less impact on the operating overvoltage.

关 键 词：ATP-EMTP 非同期合闸 空载线路 操作过电压 

分 类 号：TM86[电气工程—高电压与绝缘技术] TM743