Energies | |
Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through | |
Xinyin Zhang2  Zaijun Wu2  Minqiang Hu2  Xianyun Li1  Ganyun Lv1  | |
[1] Nanjing Institute of Technology, No.1 Hongjindadao, Nanjing 211167, China; E-Mails:;School of Electrical Engineering, Southeast University, No.2 Sipailou, Nanjing 210096, China; E-Mails: | |
关键词: permanent magnet synchronous generator (PMSG); voltage source converter-HVDC (VSC-HVDC); low voltage ride-through (LVRT); coordinated control; hierarchical control; | |
DOI : 10.3390/en8077224 | |
来源: mdpi | |
【 摘 要 】
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.
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
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RO202003190009249ZK.pdf | 866KB | download |