With the wide application of renewable energy and power electronics,the stable operation of power grids faces new challenges and opportunities.Virtual synchronous generator(VSG)control technology has great potential in maintaining power grids stability and improving energy utilization efficiency.Firstly,the characteristics of the new power system are introduced,the VSG control strategy of the energy storage converter is discussed,and the advantages of the grid-forming energy storage converters and its application scenarios are analyzed.Then,the applications of VSG technology in the field of energy sources and storage devices for accessing renewable energy are sorted out in detail,and the research focuses in this field at home and abroad are summarized.Three key VSG control methods are discussed especially,which includes the VSG control considering the state of charge of the energy storage unit,the crossover control and capacity allocation based on hybrid energy storage,and the adaptive regulation of VSG parameters.The research status and development trend of VSG technology for grid-forming converters are comprehensively summarized,aiming to provide references and insights for subsequent research and engineering practice,while pointing out the problems of VSG technology for energy storage in terms of theory and application,and prospects are presented.
关键词
储能变流器/构网型控制/可再生能源/新型电力系统/虚拟同步发电机
Key words
Energy storage converter/Grid-forming control/Renewable energy/New power system/Virtual synchronous generator(VSG)
维普
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