A Novel Power Reserve Operating Scheme of DFIG

Abstract:

The system equivalent rotary inertia and frequency control capability are decreased with growing continuously of wind power penetration, because the doubly fed induction generator (DFIG) is decoupled from system frequency, which will bring a new challenge to the large wind power integration. On the basic of analyzing power-speed characteristic of DFIG which operates at different wind speeds, the de-load operating strategy of DFIG based on coordinated controlling of over-speed and changing pitch was proposed, at the same time the de-load operating curve of DFIG was given through calculating, and the enhancing of kinetic energy was proved by theoretical analysis. And the power reserve capacity of system is enhanced.

• Periodical: Applied Mechanics and Materials (Volumes 427-429)
• Pages: 644-647
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.427-429.644
• Online since: September 2013
• Authors: Xin Shou Tian*, Zhong Xu Han, Jian Feng Tian
• Keywords: Changing Pitch, Double Fed Induction Generation (DFIG), Over-Speed, Power Reserve

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