Advanced Security Algorithm for Power Grid

Power grid is the most involved human-made system. Designing energy efficient security protocol first requires an understanding of and data related to the energy consumption of common encryption schemes. Providing time-synchronized data of power system operating states, WAMS will play a vital role in next generation smart grid protection and control. WAMS helps efficient energy transmission as well as reliable and optimal grid management. Security algorithms for power grid need to consider both performance and energy efficiency through code optimization techniques on encryption and decryption. In this paper, we take power nodes (sites) as platforms to experimentally study ways of energy consumptions in different security algorithms. First, we measure energy consumptions of various security algorithms on Cross Bow and Ember sensor nodes. Second, we propose an array of novel code optimization methods to increase energy consumption efficiency of different security algorithms. And then, we compare the results of first experiments (AES) and RC4, two energy efficient symmetric key algorithms that are commonly suggested or used in WLANs. Our results show that RC4 is more suitable for large packets and AES for small packets. Finally, based on careful analysis of measurement results.