플랜트 저널 (Plant Journal)

한국플랜트학회 (Korea Institute of Plane Engineering and Construction)
권호 표지

후류가 하류 풍력발전기의 발전량에 미치는 영향

Effect of Wake on the Energy Production of the Downstream Wind Turbine

  • 발행 : 2016.09.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 해안 복잡지형에 2열 배치된 풍력단지 운영사례를 분석하여 후류에 의한 풍력발전기의 영향을 분석하여 풍속의 변화 그리고 난류강도의 변화를 분석하였다. 주풍향 대비 인접 풍력발전기와 이격거리가 날개직경(rotor diameter,RD) 90m 기준 4RD인 경우 후류에 의해 풍속감소 및 난류강도의 증가로 인한 발전량의 감소를 확인 할 수 있었다. 특히 후류에의한 급격한 순간풍향의 변화시, 풍력발전기의 불시정지로 발전량이 현저히 감소되었고 이를 보완하기 위하여 요브레이크를 설비를 보강 함으로써 불시정지 빈도를 감소하고 발전량을 제고하는데 효과가 있음을 확인할 수 있었다.

In this study, the effect of wake on the energy production of a downstream wind turbine was analyzed on the base of operation practices of wind farm in the coastal complex terrain which has 2 row array of wind turbines. And changes in the variation of wind speed and turbulence intensity was analyzed. In case wind turbines are spaced 4-rotor diameter-apart in the prevailing wind direction, reduction in energy production was confirmed due to the decrease of wind speed and the increase of turbulence intensity by wake. Especially a radical change of wind direction caused wind turbine a sudden stop and energy production significantly reduced. It is considered improvement of yaw brake can prevent the sudden stop and increase energy production.

키워드

참고문헌

  1. Lee, Ki Hoon, 2007, Wind Tunnel Test on the Wake Characteristics of a Small-Scale Wind Turbine.
  2. DWIA, Danish Wind Industry Association, 2003, Wind Energy Reference Manual.
  3. IEC 61400-12-1 Wind turbines(1st ed.) Part 12-1-1, 2005, Power performance measurements of electricity producing wind turbines.
  4. Kim, Keon-hoon, Hyun, Seung-Gun, Ju, Young-Chul, 2012, A Study on the Effect of Wind Turbulence Intensity on the Power Performance of Wind Turbine System, Journal of the Korean Solar Energy Society, Vol. 32, No. 4.
  5. Son Jaehoon, Paek Insu, Yoo Neungsoo, Nam Yoonsu, 2014, Study on the effect of wake on the performance and load of a downstream wind turbine, Journal of the Korean Solar Energy Society, Vol. 34, No. 2.
  6. Yoo, Neung Soo∙Yoon, Kwang Young, 2008, A Study on the Effect of Wind Characteristics on the Wind Turbine Power Output, Journal of the Wind Engineering Institute of Korea, Vol. 12. No.2.