Journal
JOURNAL OF MODERN POWER SYSTEMS AND CLEAN ENERGY
Volume 6, Issue 5, Pages 847-859Publisher
SPRINGEROPEN
DOI: 10.1007/s40565-018-0413-5
Keywords
State estimation; False data injection attack; Bad data detection; Unscented Kalman filter
Categories
Funding
- Ministry of Education, Science and Technological Development of the Republic of Serbia
- Schneider Electric DMS NS, Serbia [III-42004]
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It has recently been shown that state estimation (SE), which is the most important real-time function in modern energy management systems (EMSs), is vulnerable to false data injection attacks, due to the undetectability of those attacks using standard bad data detection techniques, which are typically based on normalized measurement residuals. Therefore, it is of the utmost importance to develop novel and efficient methods that are capable of detecting such malicious attacks. In this paper, we propose using the unscented Kalman filter (UKF) in conjunction with a weighted least square (WLS) based SE algorithm in real-time, to detect discrepancies between SV estimates and, as a consequence, to identify false data attacks. After an attack is detected and an appropriate alarm is raised, an operator can take actions to prevent or minimize the potential consequences. The proposed algorithm was successfully tested on benchmark IEEE 14-bus and 300-bus test systems, making it suitable for implementation in commercial EMS software.
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