An Anti-interference Technique for Wireless Sensor Network in Transformer Substation with Complicated Electromagnetic Interference

To support the increasing power demand, a lot of ultra-high voltage transformer substations have been built, with wireless sensor network deployed to sense and collect the operation data. However, interference introduced by the substation environment is complicated. In this paper, an anti-interference technique for wireless sensor network in transformer substation with complicated electromagnetic interference is proposed. Three kinds of interference are considered. To deal with the complicated electromagnetic interference introduced by UHV transformation substations, a low-power SF allocation strategy is designed. To cope with the transmission interference, including the inter-AP co-channel interference and other co-channel interference, a shifting SF Allocation strategy is proposed. Simulation results show that the proposed scheme reduces the interference level in the substation, which is beneficial to improve the communication reliability of the WSNs in transformer substation.