电力系统保护与控制2012，Vol.40Issue(4)：1-7,13,8.
基于下垂控制结构微网小扰动稳定性分析
Small signal stability analysis of microgrid droop controlled power allocation loop
摘要
Abstract
First, the principle of the droop control and the power calculation method is introduced. In order to overcome the disadvantage of big droop coefficients on the stability of the power allocation loop, here a feed forward path on the real power droop block is added to improve the stability. Then the small signal model of the microgrid is established, the impacts of droop coefficients, line resistance and reactance, filter and feed forward coefficients' on the stability is systematically analyzed, which confirms that the feed forward path can improve the stability significantly, so the power allocation loop can adopt big droop coefficients to lower its sensitivity on the fluctuation of the frequency and voltage of the distribution network, as well as improve the reactive load distribution accuracy. At last, the time domain simulation is conducted to confirm the necessity of adopting appropriate feed forward coefficients to configurate the dominant conjugate eigenvalue of small signal model.关键词
微网/下垂控制结构/功率计算/小信号模型/稳定性分析Key words
microgrid/ droop control/ power calculation method/ small signal model/ stability analysis分类
信息技术与安全科学引用本文复制引用
范元亮,苗逸群..基于下垂控制结构微网小扰动稳定性分析[J].电力系统保护与控制,2012,40(4):1-7,13,8.基金项目
教育部新世纪优秀人才资助项目(NCET-08-0489) （NCET-08-0489）
浙江省杰出青年基金资助项目(R1080089) （R1080089）
