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| Voltage Stability and Control Technologies of Micro-Grid with Wind Power |
| Deng Wei, Tang Xisheng, Pei Wei, Qi Zhiping |
| Institute of Electrical Engineering of Chinese Academy of Sciences Beijing 100190 China |
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Abstract As dominant distributed generation unit in micro-grid, asynchronous wind turbine has great influence on system operation and voltage stability. The speed-voltage characteristics and power-voltage characteristics of asynchronous wind turbine are studied in this paper, and the impact of asynchronous wind turbine conditions such as capacity, location, and operation on system voltage stability are analyzed. Two kinds of voltage stability control strategies based on energy storage are presented, and each effect on the improvement in system voltage is researched and compared. Study results indicate that energy storage can restrain voltage fluctuations effectively under wind disturbance such as gusts or ramp wind to ensure micro-grid stable operation. When line fault occurs, energy storage can reduce system voltage recovery time after fault clearance.
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Received: 02 October 2010
Published: 19 March 2014
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2012, Vol. 27 
