摘要
近年来由于电力系统短路容量的日渐增大，接入系统的变压器因出口短路造成损坏的台数也日渐增多，而损坏的原因绝大部分是由强大的短路冲击电流在变压器绕组中产生的电动力，超出了变压器设计的耐受能力所致。提出了在变压器设计方面改变变压器的结构，降低电动力，在运行方式上限制变压器的出口短路容量到可以承受的地步，以提高变压器耐短路冲击能力。
During these years with the day by day increasing of the short circuit ca-pacity in the electric power system,the number of the transformer damaged by exitshort circuit in the electric power system has been increasing. the damaging cause ismostly because the strong short circuit impulse current in thansformer windingsgenerated an electric power, which is stronger than design tolerating power of thetransformer windings. This paper proposes that in the transformer design, struc-ture of the transformer must be improved, the electric power must be decreased andin the operating mode, the exit short circuit capacity of the transformer must be lim-ited so that the short circuit resisting irnpulse power of the transformer is in-creased.
关键词
变压器
短路冲击电流
试验
Transformer Short Circuit impulse current Electric power
