A Study on the Harmonics of Distribution Power System Interconnected with Distributed Generation

분산전원의 배전계통 연계 시 발생하는 고조파에 관한 연구

  • Park, Jae-Gyun (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Kim, Jin-Sung (Department of Electrical Engineering, Korea University of Technology and Education) ;
  • Oh, Yong-Taek (Department of Electrical Engineering, Korea University of Technology and Education)
  • 박재균 (한국기술교육대학교 정보기술공학부) ;
  • 김진성 (한국기술교육대학교 정보기술공학부) ;
  • 오용택 (한국기술교육대학교 정보기술공학부)
  • Published : 2010.01.31


In this paper, the analysis of the harmonics of distribution power system interconnected with DG(distributed generation) is simulated by using PSCAD/EMTDC and evaluated the harmonics. The modeling system for simulation is similar to the actual distribution system, and solar power system. The simulation analyses are performed at connection points for each sector. Harmonic standards of interconnection with DG (IEEE Std 1547 and IEEE Std 519) are applied to the evaluation algorithm, converted the simulated data through FFT method, evaluated by THD and TDD separately. The harmonic contents in the case of without DG and each sector with DG are evaluated and compared. The results of evaluation showed the effect that the harmonic contents are appropriated at all sector with DG (without DG) in the distribution power systems but the large induction motor(50KW) is increased the harmonic contents.


DG(Distributed Generation);THD(Total Harmonic Distortion);TDD(Total Demand Distortion);FFT(Fast Fourier Transformation);Simulation;Evaluation;Interconnection


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