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Enhancing Line Capacity Utilization in Power Transmission System Using Active MVDC Link

Author

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  • Changhee Han

    (School of Electrical Engineering, Korea University, Anam-ro, Sungbuk-gu, Seoul 02841, Korea)

  • Sungyoon Song

    (School of Electrical Engineering, Korea University, Anam-ro, Sungbuk-gu, Seoul 02841, Korea)

  • Juyong Kim

    (Korea Electric Power Corporation (KEPCO), Naju-si, Jeollanam-do 58322, Korea)

  • Gilsoo Jang

    (School of Electrical Engineering, Korea University, Anam-ro, Sungbuk-gu, Seoul 02841, Korea)

Abstract

As a proportion of generation using renewable energy increases in a power system, the need for facility investment is increasing in not only the distribution system but also the transmission system. However, it is inefficient to invest in new equipment to deal with the short peak output of renewable energy generation. For this reason, this paper proposes a method for operating the grid more flexibly, through an optimal operating strategy of the direct current (DC) line at medium-voltage (MV) level, thereby delaying the facility investment in the transmission line. In order to determine the optimal operating point of the converter connected with a DC line, the swarm intelligence-based optimization technique, which can minimize multi-objective function, is used. In addition, in order to overcome the communication dependency of the centralized control, which needs to receive information about the optimal operating point computed by the system operator, this paper proposes a decentralized emergency control (DEC) method in case of a communication fault.

Suggested Citation

  • Changhee Han & Sungyoon Song & Juyong Kim & Gilsoo Jang, 2019. "Enhancing Line Capacity Utilization in Power Transmission System Using Active MVDC Link," Energies, MDPI, vol. 12(9), pages 1-23, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1589-:d:226084
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    References listed on IDEAS

    as
    1. Sungyoon Song & Jongin Kim & Junghun Lee & Gilsoo Jang, 2017. "AC Transmission Emulation Control Strategies for the BTB VSC HVDC System in the Metropolitan Area of Seoul," Energies, MDPI, vol. 10(8), pages 1-15, August.
    2. Qi, Qi & Long, Chao & Wu, Jianzhong & Yu, James, 2018. "Impacts of a medium voltage direct current link on the performance of electrical distribution networks," Applied Energy, Elsevier, vol. 230(C), pages 175-188.
    3. Seungchan Oh & Heewon Shin & Hwanhee Cho & Byongjun Lee, 2018. "Transient Impact Analysis of High Renewable Energy Sources Penetration According to the Future Korean Power Grid Scenario," Sustainability, MDPI, vol. 10(11), pages 1-15, November.
    4. Kim, Sehyun & Lee, Hyunjae & Kim, Heejin & Jang, Dong-Hwan & Kim, Hyun-Jin & Hur, Jin & Cho, Yoon-Sung & Hur, Kyeon, 2018. "Improvement in policy and proactive interconnection procedure for renewable energy expansion in South Korea," Renewable and Sustainable Energy Reviews, Elsevier, vol. 98(C), pages 150-162.
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    Cited by:

    1. Olayiwola Alatise & Arkadeep Deb & Erfan Bashar & Jose Ortiz Gonzalez & Saeed Jahdi & Walid Issa, 2023. "A Review of Power Electronic Devices for Heavy Goods Vehicles Electrification: Performance and Reliability," Energies, MDPI, vol. 16(11), pages 1-25, May.

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