An integrated modeling framework for cascading failure study and robustness assessment of cyber-coupled power grids

Zhang, Xi; Liu, Dong; Tu, Haicheng; Tse, Chi K.

doi:10.1016/j.ress.2022.108654

Cited by 17 publications

(2 citation statements)

References 28 publications

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“…Large-scale power outages are usually caused by cascading failures (CF), which typically manifest as local disturbances such as generator failures and transmission line issues. These small disturbances gradually trigger CF of power grid components through grid connections, leading to malignant cascading reactions [1,2]. Therefore, it is crucial to quickly and accurately track the development path of CF, as well as develop targeted prevention and control strategies for CF and interruption control in accidents, to ensure the safe operation of the power system and reduce losses from power outages [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Blocking Method for Overload-Dominant Cascading Failures in Power Grid Based on Source and Load Collaborative Regulation

Sun,

Liu,

Liu

et al. 2024

International Journal of Energy Research

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Adjusting generator output and cutting off load can effectively solve the problem of continuous overload and disconnection of power lines caused by power flow transfer. To suppress large-scale power outages caused by overload-dominant cascading failures, a blocking method for overload-dominant cascading failures in the power grid based on source and load collaborative regulation is proposed. The shortest path algorithm was used to identify loads and generators with shorter electrical distances from overloaded lines. Under the premise of meeting the static safety constraints of the power grid, considering the regulation of generator output and the removal of interruptible loads, a multiobjective cascading failure blocking model is established with the minimum overall control cost of the system and the minimum probability coefficient of line failure. Use the NSGA-II algorithm to solve the model and obtain the optimal plan for adjusting generator output and cutting off load. Through example verification, the proposed method can effectively alleviate the phenomenon of line overload, thereby blocking the continuation of overload-dominant cascading failures.

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Section: Introductionmentioning

confidence: 99%

A Blocking Method for Overload-Dominant Cascading Failures in Power Grid Based on Source and Load Collaborative Regulation

Sun,

Liu,

Liu

et al. 2024

International Journal of Energy Research

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“…With the emergence of cyber‐physical power systems, researchers have investigated the impact of the cyber network on the progression of cascading failures. A framework that analyses cyber‐coupled power grids is presented in [20], where the physical network, as well as the control and protection functions of a coupled cyber network, are modeled. Grid robustness can be improved by implementing a cyber network; however, deliberate cyber‐attacks can drastically increase the magnitude of the cascades.…”

Section: Introductionmentioning

confidence: 99%

Multi‐zonal method for cascading failure analyses in large interconnected power systems

Stankovski

Gjorgiev

Sansavini

2022

IET Generation Trans & Dist

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Most cascading failure analysis methods successfully capture cascading developments within one control zone, or region comprised of multiple control zones, controlled by a single transmission system operator (TSO). They neglect, however, the operations of multi‐zonal systems. To bridge this gap, the authors introduce the multi‐zonal method for cascading failure analyses of large interconnected power systems. The method accounts for all control zones in a multi‐zonal system, assesses their power flows, re‐evaluates the system topology after disturbances and applies frequency balancing measures in each control zone independently, thus effectively simulating the actions of multiple TSOs. To demonstrate the capabilities of this method, a case study is investigated which compares the security benefits of the multi‐zonal (national) versus the single‐zone (regional) frequency balancing methods in a multi‐zonal system. The application to the IEEE 118‐bus test system shows that the regional approach increases the security of this system in small and medium cascades, whose expected demand not served is reduced by 28% and 26%, respectively, in comparison to the national approach. However, the expected load shedding for large‐scale cascading events in the regional approach is 42 times as large as in the national approach. This is mainly caused by overloads occurring in transmission lines adjacent to the cross‐zonal tie lines, which are 154% higher with the regional method compared to the national in large cascading events. The capability to identify congestions is presented by devising an upgrading strategy, which makes the regional frequency balancing approach viable from a security aspect.

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Identifying critical nodes of cyber–physical power systems based on improved adaptive differential evolution

Li,

Lin,

2024

Electric Power Systems Research

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An integrated modeling framework for cascading failure study and robustness assessment of cyber-coupled power grids

Cited by 17 publications

References 28 publications

A Blocking Method for Overload-Dominant Cascading Failures in Power Grid Based on Source and Load Collaborative Regulation

A Blocking Method for Overload-Dominant Cascading Failures in Power Grid Based on Source and Load Collaborative Regulation

Multi‐zonal method for cascading failure analyses in large interconnected power systems

Identifying critical nodes of cyber–physical power systems based on improved adaptive differential evolution

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