电网技术2016，Vol.40Issue(7)：2067-2074,8.DOI:10.13335/j.1000-3673.pst.2016.07.020
采用串联网侧变换器的双馈风电系统不对称高电压穿越控制研究
Research on HVRT Control of DFIG System Based on Series Grid-Side Converter During Asymmetrical Grid Voltage Swell
摘要
Abstract
1 Based on analysis of transient behavior of doubly-fed induction generator (DFIG) during asymmetrical grid voltage swell, this paper studies a high voltage ride through (HVRT) control strategy for DFIG-based wind power system with grid-side series converter to absorb maximum reactive power during high voltage fault. Controllability of the proposed system is analyzed. During grid voltage asymmetrical swell fault, with effective control of series grid-side converter (SGSC), DFIG stator voltage can be kept invariable and transient DC component of stator flux can be suppressed. With control of grid-side parallel converter, DC-link voltage can be kept constant, and total active or reactive power output fluctuations could be eliminated. Furthermore, power decoupling control of DFIG system and transient reactive power support can be realized by controlling rotor-side converter. Simulation results indicate that the proposed control strategy can realize DFIG system HVRT during asymmetrical grid voltage swell and power grid stability is enhanced.关键词
电网电压骤升/不对称故障/风力发电/高电压穿越/暂态无功支持Key words
grid voltage swell/asymmetrical fault/wind power generation/HVRT/transient reactive power support分类
动力与电气工程引用本文复制引用
姚骏,郭利莎,曾欣,谭义,尹潇..采用串联网侧变换器的双馈风电系统不对称高电压穿越控制研究[J].电网技术,2016,40(7):2067-2074,8.基金项目
国家自然科学基金资助项目(51477016)；教育部中央高校基本科研业务费重点项目(106112015CDJZR155516)。Project Supported by National Natural Science Foundation of China (51477016) （51477016）
the Fundamental Research Funds for the Central Universities (106112015CDJZR155516) （106112015CDJZR155516）
