KEPCO Journal on Electric Power and Energy

  • 제6권4호
  • /
  • Pages.419-425
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  • 2020
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  • 2465-8111(pISSN)
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  • 2466-0124(eISSN)
한국전력공사 (Korea Electric Power Corporation)
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Power Flow Calculation Method of DC Distribution Network for Actual Power System

  • Kim, Juyong (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Cho, Jintae (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Kim, Hongjoo (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Cho, Youngpyo (KEPCO Research Institute, Korea Electric Power Corporation) ;
  • Lee, Hansang (Department of Electrical Engineering, Semyung University)
  • 투고 : 2020.09.28
  • 심사 : 2020.10.16
  • 발행 : 2020.12.30
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초록

DC distribution system has been evaluated as an excellent one in comparison with existing AC distribution network because it needs fewer power conversion stages and the full capacity of the equipment can be used without consideration for power factor. Recently, research and development on the implementation of DC distribution networks have been progressed globally based on the rapid advancement in power-electronics technology, and the technological developments from the viewpoint of infrastructure are also in progress. However, to configure a distribution network which is a distribution line for DC, more accurate and rapid introduction of analysis technology is needed for the monitoring, control and operation of the system, which ensure the system run flexible and efficiently. However, in case of a bipolar DC distribution network, there are two buses acting as slack buses, so the Jacobian matrix cannot be configured. Without solving this problem, DC distribution network cannot be operated when the network is unbalanced. Therefore, this paper presented a comprehensive method of analysis with consideration of operating elements which are directly connected between neutral electric potential caused by the unbalanced of load in DC distribution network with bipolar structure.

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참고문헌

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