2005年安徽电网变压器绕组变形事故测试情况的分析

随着省内装机容量的增长,导致系统内的短路容量和短路电流增大,运行过程中的主变压器会发生一些近区和出口短路事故,给设备以及电网的正常运行造成影响。文中结合现场实际,对2005年度安徽电网17家地市供电公司的99台变压器开展绕组变形试验的情况进行了介绍,特别对其中4台主变压器的出口短路和绕组变形情况作了事故原因分析,提出了预防变压器近区和出口短路的措施。

Test and analysis on transformer winding deformation accidents of Anhui Grid in 2005

The increase of the provincial installed capacity leads to the increase of the short circuit capacity and short circuit current in the system. The near zone and outlet short circuit accidents brought about on operating main transformers affect the normal operation of the equipment and power system. This paper introduces the winding deformation tests on the 99 transformers of the Anhui Grid in 2005. Fault causes of the outlet short cut and winding deformation are analyzed on the four of the transformers. Preventive measures to avoid the accidents are put forward.