Detection of False Data Injection Attacks in a Smart Grid Based on WLS and an Adaptive Interpolation Extended Kalman Filter

Guoqing Zhang, Wengen Gao (), Yunfei Li, Xinxin Guo, Pengfei Hu and Jiaming Zhu
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Guoqing Zhang: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China
Wengen Gao: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China
Yunfei Li: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China
Xinxin Guo: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China
Pengfei Hu: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China
Jiaming Zhu: School of Electrical Engineering, Anhui Polytechnic University, Wuhu 241000, China

Energies, 2023, vol. 16, issue 20, 1-20

Abstract: An accurate power state is the basis of the normal functioning of the smart grid. However, false data injection attacks (FDIAs) take advantage of the vulnerability in the bad data detection mechanism of the power system to manipulate the process of state estimation. By attacking the measurements, then affecting the estimated state, FDIAs have become a serious hidden danger that affects the security and stable operation of the power system. To address the bad data detection vulnerability, in this paper, a false data attack detection method based on weighted least squares (WLS) and an adaptive interpolation extended Kalman filter (AIEKF) is proposed. On the basis of applying WLS and AIEKF, the Euclidean distance is used to calculate the deviation values of the two-state estimations to determine whether the current moment is subjected to a false data injection attack in the power system. Extensive experiments were conducted to simulate an IEEE-14-bus power system, showing that the adaptive interpolation extended Kalman filter can compensate for the deficiency in the bad data detection mechanism and successfully detect FDIAs.

Keywords: false data injection attacks; adaptive interpolation extended Kalman filter; state estimation; Euclidean distance; smart grid (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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