Study on the Transient Process of 500kV Substations Secondary Equipment
Hongbo Li, Pei Xian Li, Yanyan Zhang, Lin Niu, Nannan Gao, Tailong Si, Jiadong Guo, Minmin Xu, Guofeng Li, Liangfeng Guo · IOP Conference Series Materials Science and Engineering · 2017
By analyzing on the reason of the lightning accident occur in the substation, the way of lightning incoming surge invading the secondary system is summarized. The interference source acts on the secondary system through various coupling paths. It mainly consists of four ways: the conductance coupling mode, the Capacitive Coupling Mode, the inductive coupling mode, The Radiation Interference Model. Then simulated the way with the program-ATP. At last, from the three aspects of low-voltage power supply system, the impact potential distribution of grounding grid, the secondary system and the computer system. The lightning protection measures is put forward.