CAJ | 학술논문

电压互感器（TV）二次回路多点接地易对继电保护的动作行为产生严重干扰。分析了一起TV两点接地导致线路保护误动事例，并提出一种检查运行变电站TV二次回路接地点的试验方法，可以有效消除变电站的TV二次回路多点接地隐患，确保电网的安全运行。
전압호감기（TV）이차회로다점접지역대계전보호적동작행위산생엄중간우。분석료일기TV량점접지도치선로보호오동사례，병제출일충검사운행변전참TV이차회로접지점적시험방법，가이유효소제변전참적TV이차회로다점접지은환，학보전망적안전운행。
The multi-point grounding of the TV secondary circuit is easy to seriously disrupt the line protection action.An instances of the line protection malfunction caused by two-point grounding with TV is analyzed.An experimental method of examining the TV secondary circuit grounding point in operation substation is proposed through this case,which can effectively eliminate the TV secondary circuit substation multi-point grounding risks and ensure the safe operation of power grid.