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Research on Low Voltage Ride Through capability of wind farms grid integration using VSC-HVDC

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4 Author(s)
Jian Liu ; State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Beijing, China ; Haifeng Liang ; Wei Li ; Ran Guo

With the capacities of wind generators in power system rapidly increasing, wind farms has impact on the AC grid obviously. So the problem which is to improve Low Voltage Ride Through (LVRT) capability of wind generators needs to be solved urgently. Base on the design of controllers of DFIG and controllers of VSC-HVDC system, the wind farms connected to the AC grid by two different methods of AC and VSC-HVDC are modeled in the paper. When there is a three-phase short-circuit fault in system side, the LVRT capability of wind farm that integrates by two different ways is analyzed. For wind farm connected to AC grid through VSC-HVDC system, if VSC-HVDC system has chosen right dc-capacitors, the dc-capacitors can temporarily store energy during system fault which can ensure the LVRT requirements of wind turbines.

Published in:

Innovative Smart Grid Technologies - Asia (ISGT Asia), 2012 IEEE

Date of Conference:

21-24 May 2012

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