摘要
在构造由多条500 kV输电线路、多台600～1 000 MW发电机组电力系统组成的物理模型的基础上,探讨和分析了500 kV变压器空载合闸过程产生励磁涌流及和应涌流的原因;阐述了涌流的特点和可能由此带来的实际问题;最后从消除剩磁、抑制涌流、合理设置保护定值3个方面提出了几种目前现场可以采取的预控管理措施。
On the basis of establishing a physical model composed of several 500 kV transmission lines and 600~ 1 000 MW generating units, the paper discusses and analyzes causes for inrush current and sympathetic current during no-load switching of 500 kV transformer; it elaborates on characteristics of inrush current and potential problems. In the end, the paper introduces some precautions in terms of residual magnetism elimination, inrush suppression and reasonable protection value setting.
出处
《广东电力》
2012年第7期101-105,共5页
Guangdong Electric Power
