Cooperative Voltage Control Method by Power Factor Control of PV Systems and LRT

  • Kawasaki Shoji
    Graduate school of Electrical and Electronics Engineering, University of Fukui
  • Kanemoto Noriaki
    Graduate school of Electrical and Electronics Engineering, University of Fukui
  • Taoka Hisao
    Graduate school of Electrical and Electronics Engineering, University of Fukui
  • Matsuki Junya
    Graduate school of Electrical and Electronics Engineering, University of Fukui
  • Hayashi Yasuhiro
    Graduate School of Advanced Science and Engineering, Major in Electrical Engineering and Bioscience, Waseda University

Bibliographic Information

Other Title
  • 太陽光発電システム群の力率制御とLRTによる協調型電圧制御法
  • タイヨウコウ ハツデン システムグン ノ リキリツ セイギョ ト LRT ニ ヨル キョウチョウガタ デンアツ セイギョホウ

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Description

Recently, the number of system interconnection of the renewable energy sources (RES) such as the photovoltaic generation (PV) and wind power generation is increasing drastically, and there is in danger of changing the voltages in a distribution system by the precipitous output variation of RESs. In this study, the authors propose one voltage control method of the distribution system by the power factor control of plural PV systems in consideration of cooperation with the load ratio control transformer (LRT) of laggard control response installed beforehand in the distribution system. In the proposed method, the slow voltage variation is controlled by LRT, and the steep voltage variation uncontrollable by LRT is controlled by plural PV systems, as a result, all the node voltages are controllable within the proper limits. In order to verify the validity of the proposed method, the numerical calculations are carried out by using an analytical model of distribution system which interconnected PV systems.

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