Study On Measures For Improving The Electromagnetic Anti-interference Ability Of The Secondary Equipments In Substation

The electromagnetic interference of secondary equipment influences the safety and stabilization of the power system. This paper studied on the electromagnetic anti-interference theory of shields in secondary cables and the grounding method for the shields in high voltage power substation.Firstly, this paper introduced the electromagnetic interference resource of the secondary equipment in substation, and analyzed the ways of those electromagnetic interference. secondly , based on the structure of the secondary cables and the theory of the electromagnetic anti-interference in shields, the circuit models ware built and simulated in PSpice. At last, the Measures for improving the electromagnetic anti-interference ability of the secondary equipments in substation,such as laying method of the cables, grounding method of the shields,and etc,were developed by the conclusion of the simulation test.