一起500 kV变电站站用变保护跳闸分析

Analysis on a Substation Transformer Protection Trip in a 500 kV Substation

分析了某500kV变电站一起站用变短路故障导致的保护跳闸事件,从故障录波图分析和短路电流估算入手,结合现场一次设备故障状态,对故障发生的原因进行了分析推理和验证,并提出了具体的防范措施和建议。

Analysis is conducted on a protection trip event caused by a short-circuit fault of a 500 kV substation transformer.Starting from the analysis of fault waveform and short-circuit current calculation,combined with the fault status of equipment on a site,the fault causes are analyzed and verified,and specific prevention countermeasures and suggestions are put forward.