一起变压器出口短路故障的分析与处理

对一起变压器出口短路故障情况进行了详细叙述,描述了三相绕组的故障状态,分析了三相绕组损坏的原因。在对继电保护动作情况进行分析后,提出了预防变压器出口短路的措施,特别是就如何从继电保护方面采取措施提出了建议,改进保护整定原则,增加母差保护等。

Analysis and Handling of Short Circuit Fault at Transformer Outlet

The condition of the short circuit fault at transformer outlet was narrated in detail. The fault state of three-phase winding was described,and the reason of winding damages was analysed. After analysing protection movement condition,the measures for preventing short circuit fault at transformer outlet were suggested,especially with the measures from relay protection,such as to improve setting principle of protection and increase bus differential protection etc..