中文摘要：

变电站复杂强电磁干扰会导致电子式互感器输出错误信号,并引起继电保护装置误动作而降低电力系统的可靠性。使用隔离开关分合容性小电流试验系统产生复杂电磁环境工况,来检测电子式电流互感器的输出特性。首先,通过联合击穿电压、两断口间电压差及击穿电流的大小来判断隔离开关是否被击穿,建立了隔离开关分合电容器模型,进而模拟隔离开关操作产生的电磁暂态骚扰;其次,在隔离开关操作条件下,分别对使用有源和无源积分器的Rogowski线圈的电子式电流互感器进行了仿真;最后,通过仿真结果得出在复杂电磁环境下,基于无源积分器的电子式电流互感器相较有源积分器的电子式电流互感器在灵敏度接近的前提下,高频响应能力提高了65%以上,可以准确反映一次母线电流的变化,从而改善暂态电磁环境下电子式电流互感器的输出特性。

英文摘要：

The wrong signal of electronic transformer resulted from complex strong electromagnetism disturbance can cause the malfunction of relay protection device, reduce the reliability of power system. The test system of separating and combining capacitive small current produces complex electromagnetic environment conditions to detect the output characteristics of electronic current transformer. First of all, the breakdown voltage, the voltage between the two fracture and the breakdown current are used to judge whether the disconnector is broken down or not. The model of the disconnector is built to simulate the electromagnetic transient disturbance. Secondly, the electronic current transformer model of Rogowski coil based on active and passive integrators are simulated under the operating condition of disconnector respectively. Finally, the simulation results show that under the complex electromagnetic environment and the premise of similar sensitivity, the electronic current transformer based on passive integrator is more than 65% higher than that of the active integrator in high-frequency response. In this way, it can accurately reflect the change of bus current and improve the output characteristic of electronic current transformer under transient electromagnetic environment.