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Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System

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  • Kwan-Shik Shim

    (Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea)

  • Seok-Il Go

    (Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea)

  • Sang-Yun Yun

    (Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea)

  • Joon-Ho Choi

    (Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea)

  • Won Nam-Koong

    (Energy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, Korea)

  • Chang-Hoon Shin

    (Energy System Group Energy New Business Laboratory, Korea Electric Power Research Institute, Daejeon 34056, Korea)

  • Seon-Ju Ahn

    (Department of Electrical Engineering, Chonnam National University, Gwangju 61186, Korea)

Abstract

This paper describes a method to estimate conservation voltage reduction (CVR) factors using data measured in power distribution systems. A direct method is proposed to estimate CVR factors using only data measured at the moment of the transformer tap change. The mean absolute deviation (MAD) direct method is proposed to consider direct methods and load variations. The proposed methods do not necessitate intentional tap changes for testing purposes. Instead, the voltage and load changes that occur when the tap changes, for voltage regulation purposes, are measured and utilized in the CVR factor calculation. The proposed methods were tested using data obtained from the Korea Electric Power Corporation (KEPCO) system, and the results revealed that CVR factors for both active power and reactive power could be estimated using data measured in power distribution systems. Results of the CVR factor estimation for the active power revealed that the highest CVR factors occurred in winter, during which a large quantity of heating loads exist. In addition, the estimated CVR factors for the reactive power were higher than the estimated CVR factors for the active power because reactive power is more sensitive to voltage changes.

Suggested Citation

  • Kwan-Shik Shim & Seok-Il Go & Sang-Yun Yun & Joon-Ho Choi & Won Nam-Koong & Chang-Hoon Shin & Seon-Ju Ahn, 2017. "Estimation of Conservation Voltage Reduction Factors Using Measurement Data of KEPCO System," Energies, MDPI, vol. 10(12), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2148-:d:123049
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    References listed on IDEAS

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    1. Soon-Ryul Nam & Sang-Hee Kang & Joo-Ho Lee & Seon-Ju Ahn & Joon-Ho Choi, 2013. "Evaluation of the Effects of Nationwide Conservation Voltage Reduction on Peak-Load Shaving Using SOMAS Data," Energies, MDPI, vol. 6(12), pages 1-13, December.
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    Cited by:

    1. Alireza Gorjian & Mohsen Eskandari & Mohammad H. Moradi, 2023. "Conservation Voltage Reduction in Modern Power Systems: Applications, Implementation, Quantification, and AI-Assisted Techniques," Energies, MDPI, vol. 16(5), pages 1-36, March.
    2. Anthony Igiligi & Armin Vielhauer & Mathias Ehrenwirth & Christian Hurm & Thorsten Summ & Christoph Trinkl & Daniel Navarro Gevers, 2023. "Assessment of Conservation Voltage Reduction in Distribution Networks with Voltage Regulating Distribution Transformers," Energies, MDPI, vol. 16(7), pages 1-14, March.
    3. Mithila Seva Bala Sundaram & ChiaKwang Tan & Jeyraj Selvaraj & Ab. Halim Abu Bakar, 2023. "Energy Savings for Various Residential Appliances and Distribution Networks in a Malaysian Scenario," Energies, MDPI, vol. 16(13), pages 1-18, June.

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