Modeling And Simulation Of Electromagnetic Environment For Wireless Communication System In Intelligent Substation

State Grid in recent years carry out all aspects of the power grid intelligent construction, these tasks require the deployment of a large number of on-site wireless sensor, the corresponding high reliability and short-range wireless communication technology. The substation itself is a complex and harsh electromagnetic environment, which is a higher requirements for short-range wireless communications technology,anti-interference ability and intelligent substation electromagnetic compatibility. In this paper, the intelligent substation electromagnetic environment is studied, and the measurement and analysis of the wireless communication equipment in the substation are carried out. The modeling and simulation of the electromagnetic environment is used to provide the short-distance wireless communication equipment or system configuration and installation in the substation and anti-jamming. A strong basis. The main work of this thesis is as follows:(1) Based on the measurement data at home and abroad, this paper analyzes the complex electromagnetic environment and electromagnetic disturbance of intelligent substation, the short-range wireless communication technology application field and advantages and disadvantages.(2) Steady-state environment measurement and point-to-point communication measurement were carried out on two different high-voltage substations. The data of the electromagnetic background environment in the communication frequency bands of the substation were presented, and the short-range wireless equipment substation Deployment provides data support.(3) According to the mechanism of transient electromagnetic interference, the single-point dipole method and transmission line theory are used to calculate the electric field of a single point around the high-voltage bus. By CST electromagnetic calculation software,combined with the actual location information of the official substation, a simple model of the substation is established, which can display the change of the magnetic field in the station.