coordinated control strategies of vsc-hvdc-based wind power systems for low voltage ride through

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ID: 209673
2015
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Abstract
The Voltage Source Converter-HVDC (VSC-HVDC) system applied to wind power generation can solve large scale wind farm grid-connection and long distance transmission problems. However, the low voltage ride through (LVRT) of the VSC-HVDC connected wind farm is a key technology issue that must be solved, and it is currently lacking an economic and effective solution. In this paper, a LVRT coordinated control strategy is proposed for the VSC-HVDC-based wind power system. In this strategy, the operation and control of VSC-HVDC and wind farm during the grid fault period is improved. The VSC-HVDC system not only provides reactive power support to the grid, but also effectively maintains the power balance and DC voltage stability by reducing wind-farm power output, without increasing the equipment investment. Correspondingly, to eliminate the influence on permanent magnet synchronous generator (PMSG)-based wind turbine (WT) systems, a hierarchical control strategy is designed. The speed and validity of the proposed LVRT coordinated control strategy and hierarchical control strategy were verified by MATLAB/Simulink simulations.
Reference Key
zhang2015energiescoordinated Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Xinyin Zhang;Zaijun Wu;Minqiang Hu;Xianyun Li;Ganyun Lv
Journal acs combinatorial science
Year 2015
DOI
10.3390/en8077224
URL
http://www.mdpi.com/1996-1073/8/7/7224
Keywords
hierarchical controltechnology

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