Calculation of electric field in wire penetration monitoring device on strong electromagnetic environment

Abstract

Abstract In a strong electromagnetic environment, there is a great demand for the parameters needed to monitor the operation of lines or substation equipment, and the reliability of the monitoring device is a problem that needs to be researched. According to the need for heat dissipation and assembly of the cavity of the wire penetration monitoring device, for the high-voltage and high-current wire access point and the hole structure inside the device, this paper establishes a cavity model with a ring-shaped gap through a wire and derives the analytical formula of the electromagnetic field in the cavity, then the influence of plane wave pitching angle, the structure parameters of the conductor and the position of the wire on the internal resonance characteristic transformation of the through wire cavity are analyzed. The simulation analysis results can be used for the structure and shielding design of the wire penetration monitoring device under the electromagnetic environment of transmission lines and substations.