基于PSCAD/EMTDC的输电线路单相接地故障仿真研究
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摘要
为反映输电线路发生单相接地故障对电力系统的影响,利用PSCAD/EMTDC电磁暂态仿真软件建立了500 kV高压输电线路仿真模型.针对高压输电线路发生单相接地故障时故障点短路电流进行了模拟计算,并配置了完整的距离保护与差动保护模型.当输电线路发生单相接地故障时,继电保护装置能够迅速准确动作将故障点切离,保护系统正常运行.
To reflect the influence of single-phase grounding fault on power system of transmission line,using PSCAD/EMTDC electromagnetic transient simulation software,the simulation model of 500 kV high-voltage transmission line is established.Simulates the short-circuit current of fault point in single-phase ground fault of high-voltage transmission line.When a single-phase ground fault occurs in the transmission line,the relay protection device can quickly cut off the fault point,protecting the normal operation of the system.
To reflect the influence of single-phase grounding fault on power system of transmission line,using PSCAD/EMTDC electromagnetic transient simulation software,the simulation model of 500 kV high-voltage transmission line is established.Simulates the short-circuit current of fault point in single-phase ground fault of high-voltage transmission line.When a single-phase ground fault occurs in the transmission line,the relay protection device can quickly cut off the fault point,protecting the normal operation of the system.
引文
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[2]曹斌,吴志敏,张鹏,等.基于PSCAD的500 kV输电线路潜供电流和恢复电压的仿真分析[J].高压电器,2014,50(12):71-78
[3]唐萃.大串补度输电线路的电流差动保护分析与对策[J].电力系统自动化,2015(5):191-196
[4]曹磊,周满,张延鹏.串联补偿设备对线路保护的影响及解决办法[J].东北电力技术,2010,31(3):14-16
[5]张勇.含串补电容的线路继电保护运行与整定[J].南方电网技术,2008,2(1):75-83
[6]王育学,尹项根,张哲,等.基于参数识别原理的串补线路距离保护[J].电力系统自动化,2011,35(14):98-102
[7]胡玉峰,尹项根,陈德树,等.TCSC的继电保护数字仿真研究[J].电力系统自动化,2002,26(16):39-44
[8]夏毅,王凤岭,王翀,等.500 kV上承双回线路保护与串补保护相互影响分析[J].中国电力,2010,43(8):87-90
[9]范秀菊.可控串联电容补偿对电网继电保护影响的研究[D].北京:华北电力大学,2010
[10]肖异.可控串补电网故障暂态仿真及保护性能分析[D].武汉:华中科技大学,2006
[11]尹项根,邰能灵,杨书富.标积制动量的应用与分析[J].中国电机工程学报,2000,20(1):85-188