【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.更多还原

【Abstract】 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.更多还原