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Development of a Static Equivalent Model for Korean Power Systems Using Power Transfer Distribution Factor-Based k -Means++ Algorithm

Author

Listed:
  • Bae-Geun Lee

    (Department of Electrical Engineering, School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea)

  • Joonwoo Lee

    (Department of Electrical Engineering, School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea)

  • Soobae Kim

    (Department of Electrical Engineering, School of Electronic and Electrical Engineering, Kyungpook National University, Daegu 41566, Korea)

Abstract

This paper presents a static network equivalent model for Korean power systems. The proposed equivalent model preserves the overall transmission network characteristics focusing on power flows among areas in Korean power systems. For developing the model, a power transfer distribution factor (PTDF)-based k -means++ algorithm was used to cluster the bus groups in which similar PTDF characteristics were identified. For the reduction process, the bus groups were replaced by a single bus with a generator or load, and an equivalent transmission line was determined to maintain power flows in the original system model. Appropriate voltage levels were selected, and compensation for real power line losses was made for the correct representation. A Korean power system with more than 1600 buses was reduced to a 38-bus system with 13 generators, 25 loads, and 74 transmission lines. The effectiveness of the developed equivalent model was evaluated by performing power flow simulations and comparisons of various characteristics of the original and reduced systems. The simulation comparisons show that the developed equivalent model maintains inter-area power flows as close as possible to the original Korean power systems.

Suggested Citation

  • Bae-Geun Lee & Joonwoo Lee & Soobae Kim, 2020. "Development of a Static Equivalent Model for Korean Power Systems Using Power Transfer Distribution Factor-Based k -Means++ Algorithm," Energies, MDPI, vol. 13(24), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:24:p:6663-:d:463674
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    Cited by:

    1. Gokturk Poyrazoglu, 2021. "Determination of Price Zones during Transition from Uniform to Zonal Electricity Market: A Case Study for Turkey," Energies, MDPI, vol. 14(4), pages 1-13, February.

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