A study on immunity of wireless sensor unit in substation

This paper studies on immunity of wireless sensor unit in the Internet of Things in substation, which is responsible for signal acquisition and transmission. Field measurement and experiment indicate that the wireless sensor unit is influenced by electromagnetic disturbance in substation. Analysis of the measurement data shows that frequency range of electromagnetic disturbance includes the communication frequency of the wireless sensor unit. In order to reveal the distribution of induced voltage under electromagnetic disturbance in the wireless sensor unit and ensure reliability and security of the Internet of Things in substation, simulation and immunity test of the wireless sensor unit are performed.