Electromagnetic Interference Protection Method of Beidou Positioning Terminal Near High Voltage Transmission Lines

In this paper, the electromagnetic compatibility of Beidou positioning terminal in the Internet of Things of transmission lines is studied by combining modeling simulation and laboratory measurement test, and effective anti-interference technology suggestions are put forward by analyzing its anti-interference characteristics. Experiments have been carried out in the laboratory, including electromagnetic interference space radiation test, partial discharge test, communication test of different antenna polarization directions, and shielding effect test of large-size metal frame electrical equipment on Beidou positioning terminal communication. On the basis of these test results, the anti-interference analysis model of Beidou positioning terminal is established through simulation, which reveals the influence of electromagnetic disturbance on communication of Beidou positioning terminal in different situations, evaluates the electromagnetic compatibility of Beidou positioning terminal in transmission line, and puts forward the layout strategy and anti-interference technology of Beidou positioning terminal in transmission line. The research results of this paper provide theoretical support, experience and technical support for the wide application of Beidou positioning terminal in smart grid.