电力系统及其自动化学报2018，Vol.30Issue(1)：22-29,8.DOI:10.3969/j.issn.1003-8930.2018.01.004
基于幅频特性的储能系统参与调频的效果评价方法
Effect Evaluation Method for Energy Storage System Participating in Frequency Regulation Based on Amplitude-frequency Characteristics
摘要
Abstract
Based on the theory of power spectral density(PSD)and the principle of time-frequency domain transforma-tion,the PSD distribution characteristics of wind power fluctuation components are investigated,and the frequency spectrum characteristics of wind power fluctuation with different mean values are systematically studied and described. Grid models are built for simulating frequency regulation,and the amplitude-frequency characteristics of the grid are ob-tained with the wind power fluctuations as incentives,and the grid frequency deviation and the output power increment of the units and energy storage system(ESS)as responses. Considering two cases of frequency regulation for convention-al power units without/with ESS,the amplitude-frequency characteristics are compared. To overcome the limitation that the simple time domain indexes cannot reflect the duty distribution of frequency regulation,a method based on time-fre-quency domain index is proposed to evaluate the effect of ESS on frequency regulation. Simulation examples prove that the proposed method can comprehensively and effectively evaluate the duty difference between ESS and the convention-al units in the frequency regulation process,which can provide quantitative reference for evaluating the effectiveness of ESS related control methods and analyzing their role in the frequency regulation process.关键词
风电并网/储能调频/幅频特性/调频效果/调频责任/时频域指标Key words
wind power integration/energy storage frequency regulation/amplitude frequency characteristic/frequen-cy regulation effect/frequency regulation duty/time-frequency domain index分类
信息技术与安全科学引用本文复制引用
陈良,李欣然,黄际元,谭庄熙,李朋..基于幅频特性的储能系统参与调频的效果评价方法[J].电力系统及其自动化学报,2018,30(1):22-29,8.基金项目
国家重点研发计划资助项目(2017YFB0903400) （2017YFB0903400）
湖南省科技重大专项资助项目(2016GK1003) （2016GK1003）
国家自然科学基金资助项目(51477043) （51477043）
