Optimization Design of Grounding Grid Model for 500kV Substation

Grounding grid is an important guarantee for safe operation of transformer substation, and its performance has been under the attention of the appropriate departments. When the power system is in contingency, grounding grid will rapidly excrete fault current into the earth in order to control the rise of maximum of potential and ensure the safety of person and equipment. To make the superficial potential distributed and further reduce the touch voltage and step voltage so that we can better guarantee the personal and equipment safety, this paper puts forward the optimizing design scheme which uses numerical simulation to analyze the association factor and influencing factor.