Data-driven Probabilistic Static Security Assessment for Power System Operation Using High-order Moments

Wang, Guanzhong; Li, Zhiyi; Zhang, Feng; Ju, Ping; Wu, Hao; Feng, Changsen

doi:10.35833/mpce.2019.000106

Cited by 4 publications

(3 citation statements)

References 7 publications

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“…Thus, the presented dispatch problem for every single decision moment of real-time dispatch can be formulated as: (9) where S' is a subset of the Pareto solution set of (10). (10) where S'' is a subset of the Pareto solution set of (11).…”

Section: Ideal Dispatch Decision For Each Decision Momentmentioning

confidence: 99%

“…Unlike model (7), model (9) gives priority to narrowing down security thresholds. Only if there is more than one operation point which can narrow down security thresholds as much as possible, the proposed model will then consider the economic indicator.…”

Section: Ideal Dispatch Decision For Each Decision Momentmentioning

confidence: 99%

“…To simultaneously consider the comprehensive economic and security requirements such as costs, static security [9], and small-signal stability [10], the security operation region will be narrowed down, which would cause the challenges of constraint violations to the existing real-time dispatch strategies.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic-decision-based Real-time Dispatch for Reducing Constraint Violations

Zhong

Zhang

Chung

et al. 2022

Journal of Modern Power Systems and Clean Energy

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This paper proposes a dynamic-decision-based realtime dispatch method to coordinate the economic objective with multiple types of security dispatch objectives while reducing constraint violations in the process of adjusting the system operation point to the optimum. In each decision moment, the following tasks are executed in turn: ① locally linearizing the system model at the current operation point with the online model identification by using measurements; ② narrowing down the gaps between unsatisfied security requirements and their security thresholds in order of priority; ③ minimizing the generation cost; ④ minimizing the security indicators within their security thresholds. Compared with the existing real-time dispatch strategies, the proposed method can adjust the deviations caused by unpredictable power flow fluctuations, avoid dispatch bias caused by model parameter errors, and reduce the constraint violations in the dispatch decision process. The effectiveness of the proposed method is verified with the IEEE 39-bus system.

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