电力系统自动化2024，Vol.48Issue(17)：46-55,10.DOI:10.7500/AEPS20231025003
超级电容参与风电调频的动态响应优化策略
Optimal Dynamic Response Strategy for Supercapacitor Participating in Wind Power Frequency Regulation
摘要
Abstract
With the continuous increase of the wind power penetration rate,the power system gradually presents the characteristics of low inertia.The rate of change of frequency(RoCoF)and the maximum frequency deviation in low-inertia systems at faults increase significantly,the effect of traditional frequency control methods is weakened and the frequency safety and stability are facing challenges.In view of the above problems,the fast frequency response(FFR)which is prior to primary frequency regulation has become an important way to solve the frequency stability problems of low-inertia system.Firstly,the frequency response model of the wind-thermal-storage power system is established,and the influence of FFR on the frequency response of low-inertia system is analyzed.Secondly,an optimal dynamic response strategy for supercapacitor participating in wind power frequency regulation is proposed based on fuzzy logic inference to control the energy storage.So it can dynamically respond to the system frequency changes,restrain the frequency drop during the frequency drop period and regulate the energy storage recovery power during the frequency recovery period to maintain the stability of state of charge.Finally,the proposed control strategy is verified by simulation.The simulation results show that,the proposed strategy can use the supercapacitor to dynamically respond to the system frequency changes quickly,so as to provide power support for the low-inertia system and make up for the shortage of wind power frequency regulation.Compared with the traditional virtual inertia control strategies of wind turbines,the effects of reducing the maximum RoCoF and inhibiting the maximum frequency deviation are greatly improved.关键词
低惯量系统/快速频率响应/超级电容/风力发电/模糊逻辑控制/频率调节/惯性常数Key words
low-inertia system/fast frequency response/supercapacitor/wind power generation/fuzzy logic control/frequency regulation/inertia constant引用本文复制引用
黎静华,敖国进,宋诚鑫,兰飞..超级电容参与风电调频的动态响应优化策略[J].电力系统自动化,2024,48(17):46-55,10.基金项目
国家自然科学基金资助项目(52367004). This work is supported by National Natural Science Foundation of China(No.52367004). （52367004）
