Smart Grid Monitoring Systems based on Advanced Encryption Standard and Wireless Local Area Network

China's power grid is developing in the direction of informatization and increasingly large-scale at present. In view of the problems of optical cable interference and poor data security in the existing power grid detection system, a grid detection system based on wireless local area network (WLAN) and improved advanced encryption standard (AES) is proposed. Firstly, wireless local area network technology is introduced on the basis of the original power grid detection system to realize wireless transmission of power data. Then the newly-proposed system improves the S-BOX in the traditional AES encryption algorithm to improve the security of the algorithm. The improved AES encryption algorithm is applied to the grid detection system to realize the secure transmission of power data. Finally, the practical value of the grid detection system is verified by simulation.