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Optimal Subinterval Selection Approach for Power System Transient Stability Simulation

Author

Listed:
  • Soobae Kim

    (Korea Electric Power Research Institute (KEPRI), Korea Electric Power Corporation (KEPCO), 105 Munji-Ro, Yuseong-Gu, Daejeon 305-760, Korea)

  • Thomas J. Overbye

    (Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 306 N. Wright St., Urbana, IL 61801, USA)

Abstract

Power system transient stability analysis requires an appropriate integration time step to avoid numerical instability as well as to reduce computational demands. For fast system dynamics, which vary more rapidly than what the time step covers, a fraction of the time step, called a subinterval, is used. However, the optimal value of this subinterval is not easily determined because the analysis of the system dynamics might be required. This selection is usually made from engineering experiences, and perhaps trial and error. This paper proposes an optimal subinterval selection approach for power system transient stability analysis, which is based on modal analysis using a single machine infinite bus (SMIB) system. Fast system dynamics are identified with the modal analysis and the SMIB system is used focusing on fast local modes. An appropriate subinterval time step from the proposed approach can reduce computational burden and achieve accurate simulation responses as well. The performance of the proposed method is demonstrated with the GSO 37-bus system.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:10:p:11871-11882:d:57491
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    Citations

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    Cited by:

    1. 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.
    2. Teshome Lindi Kumissa & Fekadu Shewarega, 2023. "Fast Power System Transient Stability Simulation," Energies, MDPI, vol. 16(20), pages 1-17, October.
    3. Ikram Boucetta & Djemai Naimi & Ahmed Salhi & Saleh Abujarad & Laid Zellouma, 2022. "Power System Stability Enhancement Using a Novel Hybrid Algorithm Based on the Water Cycle Moth-Flame Optimization," Energies, MDPI, vol. 15(14), pages 1-17, July.
    4. Huaiyuan Wang & Baohui Zhang & Zhiguo Hao, 2015. "Response Based Emergency Control System for Power System Transient Stability," Energies, MDPI, vol. 8(12), pages 1-13, November.
    5. Ying-Yi Hong, 2016. "Electric Power Systems Research," Energies, MDPI, vol. 9(10), pages 1-4, October.

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