A study on immunity of wireless sensor unit in substation

Abstract

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.

A Systemic Approach for IoT Security

“…In this trend, two main research activities can be evoked here. First, authors in [24] describe a simulation and immunity test of a wireless sensor in order to avoid electromagnetic disturbance in substation. Second, immunity-based schemes can be used to detect intrusions in the IoT.…”

Wide Band Time-Correlated Model for Wireless Communications under Impulsive Noise within Power Substation

“…If the impulses are powerful enough to be detected by any commercial wireless devices, then, an increase of the impulse duration, amplitude and occurrence will increase the impulsive noise power, which is more likely to interfere with the wireless communications and to disturb the electrical network in smart grid applications. Other studies of wireless communications in power substations have confirmed the threat of impulsive noise on the reliability of the transmission [10], [11], [12], [13]. So far the main propositions to reduce the interferences are either to increase the transmission power or to choose a safe path for the sensors disposition (safety distance from the equipment or antenna orientation).…”