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Security Assessment and Coordinated Emergency Control Strategy for Power Systems with Multi-Infeed HVDCs

Author

Listed:
  • Qiufang Zhang

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Zheng Shi

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Ying Wang

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Jinghan He

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Yin Xu

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Meng Li

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

Short-circuit faults in a receiving-end power system can lead to blocking events of the feed-in high-voltage direct-current (HVDC) systems, which may further result in system instability. However, security assessment methods based on the transient stability (TS) simulation can hardly catch the fault propagation phenomena between AC and DC subsystems. Moreover, effective emergency control strategies are needed to prevent such undesired cascading events. This paper focuses on power systems with multi-infeed HVDCs. An on-line security assessment method based on the electromagnetic transient (EMT)-TS hybrid simulation is proposed. DC and AC subsystems are modeled in EMTDC/PSCAD and PSS/E, respectively. In this way, interactions between AC and DC subsystems can be well reflected. Meanwhile, high computational efficiency is maintained for the on-line application. In addition, an emergency control strategy is developed, which coordinates multiple control resources, including HVDCs, pumped storages, and interruptible loads, to maintain the security and stability of the receiving-end system. The effectiveness of the proposed methods is verified by numerical simulations on two actual power systems in China. The simulation results indicate that the EMT-TS hybrid simulation can accurately reflect the fault propagation phenomena between AC and DC subsystems, and the coordinated emergency control strategy can work effectively to maintain the security and stability of systems.

Suggested Citation

  • Qiufang Zhang & Zheng Shi & Ying Wang & Jinghan He & Yin Xu & Meng Li, 2020. "Security Assessment and Coordinated Emergency Control Strategy for Power Systems with Multi-Infeed HVDCs," Energies, MDPI, vol. 13(12), pages 1-21, June.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:12:p:3174-:d:373530
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    References listed on IDEAS

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    1. Ruoyu Zhang & Junyong Wu & Yan Xu & Baoqin Li & Meiyang Shao, 2019. "A Hierarchical Self-Adaptive Method for Post-Disturbance Transient Stability Assessment of Power Systems Using an Integrated CNN-Based Ensemble Classifier," Energies, MDPI, vol. 12(17), pages 1-20, August.
    2. Soobae Kim & Thomas J. Overbye, 2015. "Optimal Subinterval Selection Approach for Power System Transient Stability Simulation," Energies, MDPI, vol. 8(10), pages 1-12, October.
    3. Chunlei Zhang & Xiaodong Chu & Bing Zhang & Linlin Ma & Xin Li & Xiaobo Wang & Liang Wang & Cheng Wu, 2018. "A Coordinated DC Power Support Strategy for Multi-Infeed HVDC Systems," Energies, MDPI, vol. 11(7), pages 1-20, June.
    4. Xiangqi Li & Yunfeng Li & Li Liu & Weiyu Wang & Yong Li & Yijia Cao, 2020. "Latin Hypercube Sampling Method for Location Selection of Multi-Infeed HVDC System Terminal," Energies, MDPI, vol. 13(7), pages 1-15, April.
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    Cited by:

    1. Jinghan He & Ninghui Han & Ziqi Wang, 2021. "Optimization Method for Multiple Measures to Mitigate Line Overloads in Power Systems," Energies, MDPI, vol. 14(19), pages 1-19, September.

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