变压器一侧相间故障电压变化分析

Analysis and Discussion on YN,d11 Transformer Fault with Voltage Change

以某变电站YN,d11变压器中压侧BC相及低压侧bc相间故障为例。通过公式计算、向量分析、及仿真模型验证,总结出YN,d11变压器相间故障时,相电压的变化规律。当YN,d11其中一侧相间故障时,结合电压变化规律及现场波形记录,能更加准确、迅速地判断出设备的故障情况,为现场赢得了宝贵的故障处理时间,保障了设备的安全稳定运行。

Taking a substation YN, d11 BC phase voltage side of the transformer and the low-pressure side bc-phase fault, for ex-ample.By formula, vector analysis, and simulation model verification, Summed YN, when d11 transformer phase fault, phase volt-age variation.When YN, d11 one side phase fault, Combined voltage variation and field waveform record, Can be more accurately and quickly determine the fault of the equipment, For the scene to win a valuable troubleshooting time, To protect the security and stability of operation of the equipment.