CONTROL OF SUPERCONDUCTING POWER SUBSTATION TO SMOOTH WIND GENERATION AND IMPROVE SYSTEM FAULT DYNAMICS

Yang-Wu Shen, De-Ping Ke, Bin Zhang, Yuan-Zhang Sun, Jian Zuo, and Shang-Feng Xiong

Keywords

Superconducting power substation, superconducting magnetic energy storage, hybrid wind farm, doubly fed induction generator, transient voltage support

Abstract

Based on comprehensive feasibility analysis, this article proposes to use superconducting magnetic energy storage (SMES) system to suppress the high-frequency power output fluctuations of a hybrid wind farm with doubly fed induction generators (DFIGs) and fixed speed induction generators (FSIGs) so that the primary frequency control of the system can be relieved. The application of the SMES is proposed to be in the well-developed form of superconducting power substation (SPS). Moreover, it is also proposed to coordinate control of the SMES in the SPS and DFIGs in the wind farm to improve the transient dynamics of the system when subjecting a grid fault. Simulation results verify the effectiveness of the proposed control designs.

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