Data Attack Isolation in Power Networks Using Secure Voltage Magnitude Measurements
Journal article, 2014

In this paper a procedure to detect and isolate data attacks on power network power flow measurements is proposed. This method can be used in conjunction with available bad data detection (BDD) methods to isolate multiple bad data which are otherwise difficult to handle. The proposed procedure relies on secure measurements of bus voltage magnitudes to define a measurement residual using potentially compromised active and reactive power flow measurements on transmission lines. The proposed residual can be calculated in real-time. In addition, the component of the proposed residual on any particular line depends only locally on the component of the data attack on the same line. This makes the proposed residual well-suited for distributed data attack isolation in large-scale power networks. Furthermore, it can be shown that the proposed procedure becomes more effective when measurements from multiple time instances can be utilized. A detailed numerical case study on the IEEE 14-bus benchmark system demonstrates the effectiveness of the proposed procedure.

Fault location

wide-area protection


power network state estimation


Kin Cheong Sou

Chalmers, Mathematical Sciences, Mathematics

Royal Institute of Technology (KTH)

Henrik Sandberg

Royal Institute of Technology (KTH)

Karl Henrik Johansson

Royal Institute of Technology (KTH)

IEEE Transactions on Smart Grid

1949-3053 (ISSN)

Vol. 5 1 14-28

Areas of Advance

Information and Communication Technology


Driving Forces

Sustainable development

Subject Categories

Control Engineering



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