电力系统自动化2019，Vol.43Issue(5)：114-120,128,8.DOI:10.7500/AEPS20180328005
海上双馈感应发电机定子绕组匝间短路容错技术可行性分析
Feasibility Analysis of Fault-tolerant Technology for Stator Winding Turn-to-turn Short-circuit Fault of Offshore Doubly-fed Induction Generator
摘要
Abstract
Owing to the harsh marine environment, the stator winding short-circuit faults of offshore doubly-fed induction generator (DFIG) occurr constantly. Due to the low accessibility, the problems of hard maintenance and high outage loss in the offshore wind farm make the fault-tolerant technology requirements increasingly urgent. The precise and generic stator winding turn-to-turn short-circuit model of DFIG is built based on the short-circuit fault characteristics of DFIG stator windings. To solve the problem of the operation for DFIG which is seriously affected by the increase of stator negative sequence current during the fault of sequence current is seperated and the negative sequence current is extracted and offsetted by injecting the corresponding harmonic voltage into the rotor side, and the negative sequence controller is built to restrain the negative component of the stator phase current after the fault. The simulation and experimental results indicate that the proposed method is able to reduce the amplitude of stator negative sequence current and pulsation of output power.关键词
海上风电/双馈感应发电机/定子匝间短路/负序电流/容错技术Key words
offshore wind power/doubly-fed induction generator (DFIG)/stator winding turn-to-turn short-circuit/negative sequence current/fault-tolerant technology引用本文复制引用
魏书荣,吴锐,符杨,张开华,张智伟..海上双馈感应发电机定子绕组匝间短路容错技术可行性分析[J].电力系统自动化,2019,43(5):114-120,128,8.基金项目
国家重点研发计划资助项目(2017YFB0902800) （2017YFB0902800）
上海市科技创新行动计划资助项目(18DZ1202400)本文的研究得到了"电气工程"上海市Ⅱ类高原学科、上海绿色能源并网工程技术研究中心项目( 13DZ2251900) 和上海市电站自动化技术重点实验室资助,谨此致谢. （18DZ1202400）
This work is supported by National Key R&O Program of China (No. 2017YFB0902800) and Shanghai Science and Technology Innovation Action Plan (No. 18DZ1202400). （No. 2017YFB0902800）
