Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
권호 표지

Compensation of Voltage Variation Using Active Power-Dependent Reactive Power Control with Multiple VRE Systems Connected in a Distribution Line

배전 선로에 연계된 다수대의 변동성 재생에너지 발전 시스템의 출력 유효전력 변동에 따른 무효전력 제어를 이용한 전압 변동 보상

  • 이상훈 (광운대학교, 전기공학과) ;
  • 김수빈 (광운대학교, 전기공학과) ;
  • 송승호 (광운대학교, 전기공학과)
  • Received : 2018.12.18
  • Accepted : 2018.12.27
  • Published : 2018.12.31

⟨ Previous Next ⟩

Abstract

This paper introduces an active power dependent standard characteristic curve, Q(P) to compensate for voltage variations due to the output of distributed generation. This paper presents an efficient control method of grid-connected inverters by comparing and analyzing voltage variation magnitude and line loss according to the compensation method. Voltage variations are caused not only by active power, but also by the change of reactive power flowing in the line. In particular, the system is in a relatively remote place in a coastal area compared with existing power plants, so it is relatively weak and may not be suitable for voltage control. So, since it is very important to keep the voltage below the normal voltage limit within the specified inverter capacity and to minimize line loss due to the reactive power. we describe the active power dependent standard characteristic curve, Q(P) method and verify the magnitude of voltage variation by simulation. Finally, the characteristics of each control method and line loss are compared and analyzed.

Keywords

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP)

References

  1. Samadi A, Eriksson R, Soder L, Rawn B. G and Boemer J. C 2014, "Coordinated Active Power-Dependent Voltage Regulation in Distribution Grids With PV Systems" IEEE Trans. Power Delivery, vol. 29, no. 3
  2. Schwabe U and Jansson P, 2010, "Utilityinterconnected photovoltaic systems reaching grid parity in New Jersey," in Proc. IEEE Power Energy Soc. Gen. Meeting, pp. 1-5.
  3. Jaeger-Waldau A, 2012, "PV status report 2012 -research, solar cell production and market implementation of photovoltaics," European Commission, DG Joint Research Center, Institute for Energy and Transport, Renewable Energy Unit.
  4. Verma D, Midtgard O, and Satre T, 2011, "Review of photovoltaic status in a european (EU) perspective," in Proc. 37th IEEE Photovoltaic Specialists Conf, pp. 003292-003297.
  5. Wohlgemuth J. H, Cunningham D. W, Clark R. F, Posbic J. P, Zahler J. M, Garvison P, Carlson D. E, and Gleaton M, 2008, "Reaching grid parity using BP solar crystalline silicon technology," in Proc. 33rd IEEE Photovoltaic Specialists Conf., pp. 1-4.
  6. Saint Drenan Y. M, Bofinger S, Ernst B, Landgraf T, and Rohrig K, 2011, "Regional nowcasting of the solar power production with PV-plant measurements and satellite images," presented at the ISES SolarWorld Congr., Kassel, Germany.
  7. Boemer,K.Burges J. C, Zolotarev P, Lehner , Wajant P, Fürst M., Brohm R, and Kumm T, "Overview of German grid issues and retrofit of photovoltaic power plants in Germany for the prevention of frequency stability problems in abnormal system conditions of the ENTSO-E region continental europe," presented at the 1st Int.Workshop Integration of Solar Power into Power Syst.,
  8. KEPCO, 2005, "Korean grid code for interconnection of distributed resources".
  9. Im. J. H., 2008, "Analysis and Compensation of PCC Voltage Variation due to Power Fluctuation of an Isolated Grid Connected Wind Turbine", Master Course, KwangWoon Univ.
  10. Im. J. H., 2013, "The Study on Voltage Compensation for the Distributed Generation Inverter with the Consideration of Current Limit for Grid Connection including Voltage Unbalance Fault", PhD, KwangWoon Univ.