Issue No. 04 - July-Aug. (2017 vol. 14)
Hongbo Liu , Department of Computer Information and Graphics Technology, Indiana University Purdue University at Indianapolis, IN
Yingying Chen , Department of Electrical and Computer Engineering, Stevens Institute Technology, Hoboken, NJ
Mooi Choo Chuah , Department of Computer Science and Engineering, Lehigh University, Bethlehem, PA
Jie Yang , Department of Computer Science, Florida State University, Tallahassee, FL
H. Vincent Poor , Department of Electrical Engineering, Princeton University, Princeton, NJ
A key component of a smart grid is its ability to collect useful information from a power grid for enabling control centers to estimate the current states of the power grid. Such information can be delivered to the control centers via wireless or wired networks. It is envisioned that wireless technology will be widely used for local-area communication subsystems in the smart grid (e.g., in distribution networks). However, various attacks with serious impact can be launched in wireless networks such as channel jamming attacks and denial-of-service attacks. In particular, jamming attacks can cause significant damages to power grids, e.g., delayed delivery of time-critical messages can prevent control centers from properly controlling the outputs of generators to match load demands. In this paper, a communication subsystem with enhanced self-healing capability in the presence of jamming is designed via intelligent local controller switching while integrating a retransmission mechanism. The proposed framework allows sufficient readings from smart meters to be continuously collected by various local controllers to estimate the states of a power grid under various attack scenarios. The jamming probability is also analyzed considering the impact of jammer power and shadowing effects. In addition, guidelines on optimal placement of local controllers to ensure effective switching of smart meters under jamming are provided. Via theoretical, experimental and simulation studies, it is demonstrated that our proposed system is effective in maintaining communications between smart meters and local controllers even when multiple jammers are present in the network.
Jamming, Smart meters, Switches, Smart grids, Wireless communication, Substations
H. Liu, Y. Chen, M. C. Chuah, J. Yang and H. V. Poor, "Enabling Self-Healing Smart Grid Through Jamming Resilient Local Controller Switching," in IEEE Transactions on Dependable and Secure Computing, vol. 14, no. 4, pp. 377-391, 2017.