Study on Influence of Electromagnetic Disturbance on Wireless Sensor Unit in Substation

This paper mainly focuses on feature of the electromagnetic disturbance generated by power system and influence on wireless sensor unit. Wireless sensor unit works in substation for signal acquisition and transmission. Influence of electromagnetic disturbance, which is generated in substations of different voltage levels and of different insulation types, on wireless sensors is studied in order to ensure reliability and security. After field measurement and analysis, simulation and immunity test are performed based on extensive field measurement data. Statistical characteristics of electromagnetic disturbance are obtained. Immunity of wireless sensor unit in substation is studied.