中国电机工程学报Issue(34)：6083-6092,10.DOI:10.13334/j.0258-8013.pcsee.2014.34.009
计及转子励磁控制的双馈感应发电机短路电流研究
Research on Short-circuit Current of Doubly-fed Induction Generators Under Rotor Excitation Control
摘要
Abstract
The large-scale application of doubly-fed wind turbines has significantly changed the fault transient characteristics of power systems. The short-circuit current contributed by doubly-fed induction generator (DFIG) should be fully understood to ensure the implementation of the planning and protection of power system. However, the impact of the converter excitation control has not been fully assessed, thus resulting in greater difficulty in the analysis and calculation of short-circuit current. This study presents a detailed analysis of short-circuit current of a DFIG, with focus on the complex coupling between the excitation control and electromagnetic process. The transient disturbances and their transitive relation in a DFIG under symmetrical short circuit are analyzed by constructing the dynamic model of rotor circuit. The expressions of rotor and stator short-circuit currents are deduced for the simplified calculation and analytical analysis. The characteristics of the short-circuit current of DFIG under the excitation control are analyzed and the impacts of control mode on the transient behavior are presented. The time-domain simulation is adopted to verify the validity of the theoretical analyses.关键词
风力发电/双馈感应发电机/短路电流/电压跌落/矢量控制Key words
wind power/doubly fed induction generator (DFIG)/short-circuit current/voltage drop/vector control分类
信息技术与安全科学引用本文复制引用
欧阳金鑫,熊小伏..计及转子励磁控制的双馈感应发电机短路电流研究[J].中国电机工程学报,2014,(34):6083-6092,10.基金项目
国家高技术研究发展计划项目(863计划)(2011AA05 A107)；重庆大学输配电装备及系统安全与新技术国家重点实验室资助重点项目(2007DA10512711102)。The National High Technology Research and Development of China 863 Program(2011AA05A107) （863计划）
Key Project Supported by State Key Laboratory of Power Transmission Equipment and System Security (2007DA10512709202) （2007DA10512709202）
