出口短路对变压器的影响及预防措施

The Impact of Outlet Short-circuit on Power Transformer

变压器是电力系统中重要的设备之一,变压器的稳定可靠运行对电力系统安全起着非常重要的作用;但由于受变压器制造技术和运行维护水平的限制,故障还是时有发生。近年来,变压器出口短路故障严重影响了电力系统的安全稳定运行。统计表明,在变压器损坏的原因中,80%是由于变压器出口短路电流冲击造成。因此,加强变压器的运行维护,采取切实有效的措施防止变压器出口短路,对电网的安全稳定运行具有重要的意义。

Transformer in electric system is one of the most important apparatuses,its stability and reliability are vital to power system.But because of the limit of its manufacturing technology and operation level, breakdown of short-circuit is often takes place.The transformer＇s outlet short-circuit influences the security of the electric system.From the statistics,we conclude that in the breakdown of the transformer 80% are caused by outlet short-circuit. So,enhanccing the stability of the transformer and takeing some measures to prevent the outlet short-circuit are significance to transformer.