Coordinated voltage control of a DFIG-based Wind Power Plant to suppress the overvoltage after a fault clearance

사고 제어 이후 과전압 억제를 위한 DFIG 풍력단지의 협조 전압제어

  • Park, Geon (Department of Electrical Engineering, Chonbuk National University) ;
  • Kim, Jinho (Department of Electrical Engineering, Chonbuk National University) ;
  • Kang, Yong Cheol (Department of Electrical Engineering, Chonbuk National University)
  • Published : 2015.07.15

Abstract

This paper presents a coordinated control scheme of a doubly-fed induction generator (DFIG)-based wind power plant (WPP) to suppress the overvoltage after a fault clearance. To achieve this, the variation of the terminal voltage at a fault clearance is captured and used to DFIG and WPP controllers. As a result, DFIGs within a WPP suppress the overvoltage rapidly by reducing the reactive power injection. The performance of the proposed scheme was investigated for a 100 MW WPP consisting of 20 units of 5 MW DFIGs for a grid fault. The results show the proposed scheme successfully suppresses the overvoltage at the point of interconnection.

Keywords