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Key Application Technologies of High Efficiency Power Quality Control Systems

  • Liu, Ding-Guo (College of Electrical and Information Engineering, Hunan University) ;
  • Shuai, Zhi-Kang (College of Electrical and Information Engineering, Hunan University) ;
  • Tu, Chun-Ming (College of Electrical and Information Engineering, Hunan University) ;
  • Cheng, Ying (Maintenance Company, Hunan Electric Power Corporation) ;
  • Luo, An (College of Electrical and Information Engineering, Hunan University)
  • Received : 2012.06.18
  • Published : 2013.05.20

Abstract

Large capacity reactive power compensation and harmonic control in the low-voltage grid of an enterprise, are important technical means to improve power quality and reduce power loss. In this paper, the principle of an efficient power quality controller is analyzed. Then, key application technologies of the HPQC which would influence the performances of the HPQC are studied. Based on an analysis of the harmonic shunt problem, a frequency dividing control strategy of the HPQC continuous subsystem is proposed. A parameter design method of the HPQC discrete subsystem and its installation method are also proposed to ensure the system compensation effect. HPQC systems have been designed for a copper foil plant. The effectiveness of this paper has been verified by the simulation and application results.

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