DOI QR코드

DOI QR Code

Comparative Study to Predict Power Generation using Meteorological Information for Expansion of Photovoltaic Power Generation System for Railway Infrastructure

철도인프라용 태양광발전시스템 확대를 위한 기상정보 활용 발전량 예측 비교 연구

  • Yoo, Bok-Jong (Department of Electrical Engineering, Hanyang University) ;
  • Park, Chan-Bae (Department of Railroad Operation System Engineering, Korea National University of Transportation) ;
  • Lee, Ju (Department of Electrical Engineering, Hanyang University)
  • Received : 2017.07.26
  • Accepted : 2017.08.20
  • Published : 2017.08.31

Abstract

When designing photovoltaic power plants in Korea, the prediction of photovoltaic power generation at the design phase is carried out using PVSyst, PVWatts (Overseas power generation prediction software), and overseas weather data even if the test site is a domestic site. In this paper, for a comparative study to predict power generation using weather information, domestic photovoltaic power plants in two regions were selected as target sites. PVsyst, which is a commercial power generation forecasting program, was used to compare the accuracy between the predicted value of power generation (obtained using overseas weather information (Meteonorm 7.1, NASA-SSE)) and the predicted value of power generation obtained by the Korea Meteorological Administration (KMA). In addition, we have studied ways to improve the prediction of power generation through comparative analysis of meteorological data. Finally, we proposed a revised solar power generation prediction model that considers climatic factors by considering the actual generation amount.

국내에서 태양광 발전설비 설계 시 설계 단계에서의 태양광발전소의 발전량 예측은 국내 현장임에도 불구하고 PVsyst, PVWatts 등 해외 발전량 예측 프로그램과 해외 기상 자료를 이용하여 발전량을 예측하는 경우가 대부분을 차지하고 있는 실정이다. 본 논문에서는 기상정보를 활용한 발전량 예측 비교 연구를 위하여 현재 운영중인 2개 지역의 국내 태양광발전소를 대상지로 선정하였다. 발전량 예측 프로그램인 PVsyst를 활용하여 Meteonorm 7.1과 NASA-SSE의 해외 기상정보를 이용한 발전량 예측값과 국내 기상청 (Korea Meteorology Administration) 기상정보를 활용한 발전량 예측 정확성을 비교하였다. 추가적으로, 기상자료 비교 분석을 통한 발전량 예측 개선 방안을 연구하고, 최종적으로 실제 발전량과의 비교 분석을 통해 기후요소가 고려된 태양광 발전량 예측 수정 모델을 제시하였다.

Keywords

References

  1. Korean Railroad Corporation (2015) Electrical operations data, KORAIL Report 22.
  2. B.J. Yoo, J. Lee (2017) A study on photovoltaic power generation amount forecast at design stage for extended application in the field of railways, Journal of the Korean Society for Railway, 20(2), pp. 182-189. https://doi.org/10.7782/JKSR.2017.20.2.182
  3. www.yonhapnews.co.kr/bulletin/2016/07/21/0200000000AKR20160721086800063.html (Accessed 11 June 2017)
  4. www.pvsyst.com (Accessed 27 January 2017)
  5. S.M. Cheong, J. S. Lee (2014) Design of photovoltaic power generation system, Eduall, 83, Moraenae-ro, Mapo-gu, Seoul, Korea, pp.103.
  6. B.J. Kim, J.W. Park, J.H Yun, W.C. Shin (2015) The development of performance evaluation program of building integrated photovoltaic system, Korea Institute of Ecological Architecture Environment Journal, 15 (4), pp.85-86.
  7. Meteonorm (2014) Meteonorm global meteorological database, Handbook Part I : Software Meteotest.
  8. National Institute of Meteorological Sciences (2013) Meteorological resource map data from technology development research to support green growth (2010-) and Applied Research to Develop Meteorological Technologies (2013-).
  9. Korea Meteorological Administration (2008) An analysis of meteorological resources for optimal utilization of solar energy
  10. A. M. Omar, M. Z. Hussin, S. Shaari, K. Sopian (2014) Energy yield calculation of the grid connected photovoltaic power system, 2014 8th International Conference on Renewable Energy Sources (RES 14), At Kuala Lumpur, pp.163-164.
  11. C. E. B. E. Sidi, M. L. Ndiaye, A. Ndiaye, P. A. Ndiaye (2015) Outdoor performance analysis of a monocrystalline photovoltaic module: Irradiance and temperature effect on exergetic efficiency, International Journal of Physical Sciences 10(11), pp.353.