中国电机工程学报Issue(15)：3815-3822,8.DOI:10.13334/j.0258-8013.pcsee.2015.15.009
基于双馈感应风力发电机虚拟惯量和桨距角联合控制的风光柴微电网动态频率控制
Dynamic Frequency Control Strategy of Wind/Photovoltaic/Diesel Microgrid Based on DFIG Virtual Inertia Control and Pitch Angle Control
摘要
Abstract
Frequency stability is an important guarantee for islanded microgrid, which can ensure it operate safe and steady. In order to improve microgrid dynamic frequency characteristic, this paper represented a virtual inertia control strategy of doubly fed induction generator (DFIG) to increase the amount of microgrid inertia via releasing part of the kinetic energy stored in the rotating rotor, so DFIG can provide a transient frequency support for microgrid. To compensate the decrease of output wind power during the recovery period of the rotor speed, this paper presented the pitch angle control strategy. As a result, the released reserve power caused by decrease of pitch angle can compensate the output power sag, and reduce steady state frequency deviation. This paper combined characteristic of virtual inertial control and pitch angle control of DFIG, and coordinated primary frequency control of diesel generator, consequently islanded microgrid frequency fluctuations caused by load variation can be effectively restrained. Finally, this paper established the microgrid control model include the diesel generator, photovoltaic cell and DFIG, the simulation results showed that this control strategy is valid.关键词
孤岛运行微电网/动态频率控制/双馈感应风力发电机/虚拟惯量控制/桨距角控制Key words
islanded microgrid/dynamic frequency control/doubly fed induction generator (DFIG)/virtual inertia control/pitch angle control分类
信息技术与安全科学引用本文复制引用
赵晶晶,吕雪,符杨,胡晓光..基于双馈感应风力发电机虚拟惯量和桨距角联合控制的风光柴微电网动态频率控制[J].中国电机工程学报,2015,(15):3815-3822,8.基金项目
国家自然科学基金项目(51207087)；上海市教委科研创新项目(12YZ143)；上海绿色能源并网工程技术研究中心资助项目(13DZ2251900)。This project is supported by National Natural Science Foundation of China (51207087) （51207087）
Innovation Program of Shanghai Municipal Education Commission (12YZ143) （12YZ143）
Shanghai Engineering Research Center of Green Energy Grid-Connected Technology (13DZ2251900) （13DZ2251900）
