An Optimization Strategy for Generator Start-up Sequence After Blackouts Considering the Cyber System Fault

doi:10.11930/j.issn.1004-9649.202205013

Abstract

Abstract: A reasonable start-up sequence scheme of generator units after blackouts is conducive to increasing the generation capacity of power systems and speeding up power system restoration. Since the dispatching control of power systems highly depends on cyber systems, the cyber system fault will affect the start-up sequence of generator units in the process of power system restoration. Given this background, an optimal start-up sequence model of generator units is proposed with consideration of the cyber system faults. Firstly, the cyber system fault based on the denial of service (DoS) attack is introduced, and the effect of the cyber system fault on the restoration characteristics of generator units in the process of generators' restoration is analyzed. And then, the time uncertainty of cyber system fault is addressed by employing the scenario analysis method. An optimal start-up sequence model of generators is proposed with the expectation of maximum power systems’ total generation as objective function, and taking into account the constraints including the start-up time constraint of generator units, the auxiliary variables constraint related to the cyber system fault, and the start-up power constraint of generator units. The proposed model is linearized and reformulated into a mixed-integer linear programming model, and it can be efficiently solved by commercial solvers. Finally, the IEEE 39-bus power system is employed to verify the effectiveness of the proposed model.

Key words: power system restoration, black-start, generator start-up sequence, cyber system, mixed integer linear programming

LI Mingming, SUN Lei, MA Yinghao. An Optimization Strategy for Generator Start-up Sequence After Blackouts Considering the Cyber System Fault[J]. Electric Power, 2022, 55(9): 146-155.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202205013

https://www.electricpower.com.cn/EN/Y2022/V55/I9/146

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