中国电机工程学报2017，Vol.37Issue(19)：5613-5621,9.DOI:10.13334/j.0258-8013.pcsee.161896
基于特征值分析的DFIG风电机组在微电网中的频率控制策略研究
Control Strategy of DFIG Wind Power Generation on Frequency Control of Micro-grid Based on Eigenvalue Analysis
摘要
Abstract
With developing of power electronics technology,the variable speed constant frequency doubly fed induction generator (DFIG) could be involved in frequency adjustment by using virtual inertia control and over-speed load reduction control.This paper focus on fmding the eigenvalue of response character of frequency of micro-grid,which is achieved by analyzing the variation of the eigenvalues of the micro-grid when the parameters of the virtual inertia control,over-speed control and diesel engine control changes.The reasonable range of the variation of the virtual inertia control and over-speed control was obtained by taking the stability of the micro-grid into consideration.The stability of the micro-grid was evaluated by the variation of the eigenvalue of the micro-grid corresponding to the variation of parameters of the virtual inertia control and the over-speed control.To solve the frequency oscillation problem caused by choosing too big frequency control parameters,the PI parameters of the active power control of the DFIG was modified,so that the small signal stability of the micro-grid is improved by improving dynamic response of the frequency of the micro-grid.Finally,the method,which could improve the frequency stability and the small signal stability of the micro-grid,proposed in this paper was verified by dynamic time-domain simulation that was built in DIgSILENT/PowerFactory.关键词
微电网/风电/频率控制/小干扰稳定性/特征值分析法Key words
micro-grid/wind power generation/frequency control/small signal stability/eigenvalue analysis分类
信息技术与安全科学引用本文复制引用
赵晶晶,洪婉莎,徐成斯,徐传琳..基于特征值分析的DFIG风电机组在微电网中的频率控制策略研究[J].中国电机工程学报,2017,37(19):5613-5621,9.基金项目
国家自然科学基金项目(51207087) （51207087）
上海绿色能源并网工程技术研究中心资助项目(13DZ2251900).Project Supported by National Natural Science Foundation of China (51207087) （13DZ2251900）
Shanghai Green Energy Grid Connected Technology Engineering Research Center(13DZ2251900). （13DZ2251900）
