异地双端继电保护暂态试验方法

Study of Two Terminal Relays Transient Test System on Different Positions

预先用电力系统电磁暂态计算程序ＥＭＴＰ准备好数据，利用ＧＰＳ全球定位系统作 为处于异地两端的继电保护暂态试验系统的同步时钟，在一条线路的两侧就可以同时同步地 模拟线路故障时线路两侧的真实三相电流、电压。两侧保护有动作时，通过公用电话网互传 保护动作信息，线路两侧试验系统根据两侧保护的动作情况送出相应于保护动作后的两侧电 流。电压，实现闭环测试。经大量试验获得了满意结果。

By utilizing EMTP to prepare dam in advance, and GPS global positioning system to synchronize the clocks of the two terminal relay transient test systems on different positions, the simulation o f actual fault currents and voltages of three phases on the two terminals of the line can be realized simultaneously. When the two terminal relays of the line act, action information can be transmitted to each other immediately. Then, according to the action information of relays, the relays transient test system on the different terminals of the line can send out corresponding currents and voltages of the three phases to test relays in closed-loop mode.