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Optimal Parameters of Volt–Var Function in Smart Inverters for Improving System Performance

Author

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  • Hyeong-Jin Lee

    (Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Korea)

  • Kwang-Hoon Yoon

    (Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Korea)

  • Joong-Woo Shin

    (Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Korea)

  • Jae-Chul Kim

    (Department of Electrical Engineering, Soongsil University, 369, Sangdo-ro, Dongjak-gu, Seoul 06978, Korea)

  • Sung-Min Cho

    (Korea Electric Power Research Institute (KEPRI), Korea Electric Power Company (KEPCO), 105, Munji-ro, Yuseong-gu, Daejeon 34056, Korea)

Abstract

This paper proposes a method to improve the performance of a distribution system by optimizing volt–var function of a smart inverter to alleviate the voltage deviation problem due to distributed generation connection. In order to minimize voltage deviation and line losses which represent the performance of a distribution system, this paper proposes an algorithm that optimally sets the parameters of the volt–var function. In the process of optimizing the parameters of the volt–var function, the algorithm proposed in this paper considers minimizing the contribution of the reactive power in order not to affect the output of the distributed generation. In order to apply to the field, the distribution system in South Korea considering the configuration and operation regulation was selected as a test model for algorithm verification. As a result, the system performance was successfully improved by optimally setting the volt–var function of the smart inverter which is an effective way to solve the over-voltage problem caused by distributed generation connection. This paper verified the proposed method through OpenDSS, a quasi-static time-series simulation, for the test model considering the characteristics of the distribution system in South Korea.

Suggested Citation

  • Hyeong-Jin Lee & Kwang-Hoon Yoon & Joong-Woo Shin & Jae-Chul Kim & Sung-Min Cho, 2020. "Optimal Parameters of Volt–Var Function in Smart Inverters for Improving System Performance," Energies, MDPI, vol. 13(9), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:9:p:2294-:d:354317
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    References listed on IDEAS

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    1. Jaewan Suh & Sungchul Hwang & Gilsoo Jang, 2017. "Development of a Transmission and Distribution Integrated Monitoring and Analysis System for High Distributed Generation Penetration," Energies, MDPI, vol. 10(9), pages 1-15, August.
    2. Sang-Yun Yun & Joon-Ho Choi, 2014. "Development and Field Test of a Real-Time Database in the Korean Smart Distribution Management System," Energies, MDPI, vol. 7(4), pages 1-24, March.
    3. Yun-Su Kim & Gyeong-Hun Kim & Jae-Duck Lee & Changhee Cho, 2016. "New Requirements of the Voltage/VAR Function for Smart Inverter in Distributed Generation Control," Energies, MDPI, vol. 9(11), pages 1-14, November.
    4. Hana Kim & Hun Park, 2018. "PV Waste Management at the Crossroads of Circular Economy and Energy Transition: The Case of South Korea," Sustainability, MDPI, vol. 10(10), pages 1-15, October.
    5. Sang-Yun Yun & Pyeong-Ik Hwang & Seung-Il Moon & Seong-Chul Kwon & Il-Keun Song & Joon-Ho Choi, 2014. "Development and Field Test of Voltage VAR Optimization in the Korean Smart Distribution Management System," Energies, MDPI, vol. 7(2), pages 1-27, February.
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    Cited by:

    1. Zheng Liu & Maryam Majidi & Haonan Wang & Denis Mende & Martin Braun, 2023. "Time Series Optimization-Based Characteristic Curve Calculation for Local Reactive Power Control Using Pandapower - PowerModels Interface," Energies, MDPI, vol. 16(11), pages 1-24, May.
    2. Ryuto Shigenobu & Akito Nakadomari & Ying-Yi Hong & Paras Mandal & Hiroshi Takahashi & Tomonobu Senjyu, 2020. "Optimization of Voltage Unbalance Compensation by Smart Inverter," Energies, MDPI, vol. 13(18), pages 1-22, September.

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