Abstract

The automatic collection of power grid situation information and the real-time multimedia interaction between the front and back end of the accident handling have generated massive power grid data. Wireless communication provides a convenient channel for grid terminal access and data transmission, but the bandwidth of wireless communication is limited, and its broadcasting nature makes information easy to be monitored by illegal eavesdroppers in the transmission process. In order to realize reliable, secure and real-time transmission of power grid data, an intelligent security transmission strategy based on sense-transfer linkage is proposed. The optimization problem is constructed with maximum system security capacity as the goal, interruption probability and interception probability as constraints, and a low complexity algorithm is designed to obtain the sub-optimal solution of the problem. Finally, simulation results verify the effectiveness of the proposed scheme in ensuring communication security, stability and real-time performance.