Journal of Power System Engineering (동력기계공학회지)

The Korean Society for Power System Engineering (한국동력기계공학회)
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Study on Optimum Design Condition for Variable Speed Control of Rated Speed Fans used in a Power Plant

발전소 통풍계통의 가변속 운전을 위한 최적 설계조건에 관한 연구

  • 조철환 (한국전력 전력연구원) ;
  • 양경현 (한국전력 전력연구원) ;
  • 정남근 (한국전력 전력연구원) ;
  • 김봉진 (한국 중부발전(주) 제주화력 발전처)
  • Received : 2010.05.24
  • Accepted : 2010.08.27
  • Published : 2010.10.31
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Abstract

Recently, the large capacity draft fans in power plants had been changed to variable speed type to educe the power consumption. But the fan experienced the unexpected vibration at specific speed regions. In this study, the high vibration frequency of the fan was confirmed and the natural frequency of the rotor were measured and analyzed by FEM programs. It was analyzed that the vibration was caused by the resonance at the frequency, 30.7Hz. So, the rotor vibration characteristic was changed by adjusting the distance between the shaft bearings. It was conformed the high vibration was disappeared over the all operation speeds.

Keywords

References

  1. 김종철, 1986, "PUMP와 BLOWER의 가변속 운전에 의한 ENERGY SAVING", 세미나집, 한국기계산업진흥회, pp. 98-102.
  2. 김병옥, 이안성, 2008, "산업용 원심분리기의 진동저감을 위한 로터다이나믹 해석", 한국소음진동공학회 논문집 제18권 제8호, pp. 879-885.
  3. 양경현. 조철환, 조성태, 2009, "FDF 및 IDF 가변속 운전에 대한 안정성 검토 결과 보고서", 기술보고서, 한전 전력연구원, pp. 1-16.
  4. 조철환 외 4인, 2009. "발전소 통풍계통의 가변속 적용 후 진동특성에 관한연구" 한국동력기계공학회지, 제13권, 제6호.