Analysis of Physical Layer Security Communication in Smart Grid

Abstract

In the smart grid environment, the secure transmission of power data is a major challenge for smart devices. Due to the broadcasting characteristics of wireless media, wireless communications in the power grid are vulnerable to eavesdropping attacks. Traditional encryption implementation requires high costs in wireless environments. In order to improve the security of data transmission in the power grid, physical layer security (PLS) has attracted widespread attention. However, there are too many idealized and unrealistic assumptions about the security research results in this field. This paper analyzes a physical layer security communication scheme considering the actual erection distance. When up-layer system break by opponent, the natural randomness of the physical channel will play a role in ensuring system security. We conducted simulations and analyzed the impact of the legal user’s erection distance on the physical layer security performance of data transmission in the power grid, and adopted a targeted secure transmission scheme.