摘要
建立LCL型储能虚拟同步发电机并网系统传递函数模型,分析不同电网强度和阻抗参数下,LCL型储能虚拟同步发电机谐波谐振风险和特性。为抑制LCL型储能虚拟同步发电机的谐波谐振,基于其控制策略,提出在滤波电容上串联阻尼电阻和并联阻尼电阻的谐波谐振抑制策略,通过改变滤波电容复阻抗的方法,阻尼谐波谐振尖峰,增加LCL型储能虚拟同步发电机并网系统的幅值裕度和相角裕度,增强系统稳定性。建立LCL型储能虚拟同步机电磁暂态模型,验证所提策略的可行性。
The transfer function model of LCL-type energy storage virtual synchronous generator is established in this paper,and the harmonic resonance risk and characteristics of the LCL-type energy storage virtual synchronous generator under different power and impedance parameters is analyzed.In order to suppress the harmonic resonance of the LCL-type energy storage virtual synchronous generator,based on its control strategy,a harmonic resonance suppression strategy with a series damping resistance and a parallel damping resistance on the filter capacitor is proposed.By changing the complex impedance of the filter capacitor,harmonic resonance peaks are damped,and the amplitude margin and phase margin of the LCL-type energy storage virtual synchronous generator grid-connected system are increased,and the system stability is enhanced.The electromagnetic transient model of LCL-type energy storage virtual synchronous machine is established,and the feasibility of the proposed strategy is verified.
作者
李智
张中华
刘辉
宋鹏
何同祥
李娜
Li Zhi;Zhang Zhonghua;Liu Hui;Song Peng;He Tongxiang;Li Na(State Grid Jibei Electric Power Co.Ltd.Research Institute,North China Electric Power Research Institute Co.Ltd.,Beijing 100045,China;State Grid Wind-Solar-Energy Storage Generation Laboratoryi Beijing 100045,China;North China Electric Power University,Baoding 071000,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第10期101-108,共8页
Acta Energiae Solaris Sinica
基金
国家电网公司科技项目(张家口可再生能源示范区重大科技示范工程运维关键技术)
风光储并网运行技术国家电网公司重点实验室资助项目。
关键词
储能虚拟同步发电机
谐波谐振
阻尼电阻
谐振优化
energy storage virtual synchronous generator
harmonic resonance
damping resistance
resonance optimization
