A survey on cyber attacks against nonlinear state estimation in power systems of ubiquitous cities |
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| Affiliation: | 1. Department of Computer Science, The University of Hong Kong, Hong Kong, China;2. Harbin Institute of Technology Shenzhen Graduate School, China;3. Department of Optoelectronic Engineering, Jinan University, China;1. School of Computer Science and Technology, USTC, China;2. Suzhou Institute for Advanced Study, USTC, China;3. School of Computer Science, Yancheng Teachers University, China;1. Electronics Research Institute, Computers and Systems Department, Cairo, Egypt;2. Al-Azhar University, Computers and Systems Department, Cairo, Egypt;1. Institute for Information Industry, Taipei, Taiwan;2. Department of Computer Science and Information Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan;1. Faculty of Natural and Applied Sciences, Notre Dame University, Deir el Qamar, Lebanon;2. LARlFA-EDST Laboratory, Faculty of Sciences, Lebanese University, Fanar, Lebanon |
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| Abstract: | It is well-known that critical infrastructures would be targets for cyber attacks. In this paper, we focus on the power systems (i.e. smart grids) in ubiquitous cities, where every meter is linked to an information network through wireless networking. In a smart grid system, information from smart meters would be used to perform a state estimation in real time to maintain the stability of the system. A wrong estimation may lead to disastrous consequences (e.g. suspension of electricity supply or a big financial loss). Unfortunately, quite a number of recent results showed that attacks on this estimation process are feasible by manipulating readings of only a few meters. In this paper, we focus on nonlinear state estimation which is a more realistic model and widely employed in a real power grid environment. We category cyber attacks against nonlinear state estimation, and review the mechanisms behind. State-of-the-art security measures to detect these attacks are discussed via sensor protection. Hope that the community would be able to come up with a secure system architecture for ubiquitous cities. |
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| Keywords: | Nonlinear state estimation Attacks Power systems Security |
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