신재생에너지 (New & Renewable Energy)

  • 제9권2호
  • /
  • Pages.51-57
  • /
  • 2013
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  • 1738-3935(pISSN)
  • /
  • 2713-9999(eISSN)
한국신·재생에너지학회 (Korean Society for New and Renewable Energy)
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인버터 기반 신재생 에너지 발전 시스템의 계통 지원 운전을 위한 계통 전압 검출 방법

A Detection Method of Grid Voltage for Grid Support Operation of an Inverter-based Renewable Energy Generation System

  • 안현철 (광운대학교 대학원 전기공학과) ;
  • 송승호 (광운대학교 전기공학과)
  • Ahn, Hyun-Chul (Department of Electrical Engineering, Kwangwoon University) ;
  • Song, Seung-Ho (Department of Electrical Engineering, Kwangwoon University)
  • 투고 : 2013.03.25
  • 심사 : 2013.06.27
  • 발행 : 2013.06.25
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초록

The Grid code is being strengthen as increase of renewable energy ratio. Especially, the grid connection regulations are continuously being updated for stable operation of power grids. Static grid support and Dynamic grid support must make an accurate measure at Grid connected point because they needs control algorithm individually. It has to exactly measure voltage including switching ripple at the output of the inverter generating system. In addition, it is necessary to have an accurate voltage measurement when the situation rapidly changing the grid impedance is caused by the input of serial impedance of transformer and line impedance as well as Grid Fault Device. In this paper, We propose a new detection method of grid voltage to calculate accurately the r.m.s voltage of the grid connection point along the standard required by the low voltage regulation. We verified performance through simulation grid fault device.

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참고문헌

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