高电压技术2024，Vol.50Issue(11)：4773-4788,16.DOI:10.13336/j.1003-6520.hve.20241234
高渗透率新能源发电并网变流器跟网/构网型稳定控制技术综述与展望
Review and Prospect of Stability Control Techniques for Grid-following/Grid-forming Con-verters in High-penetration Renewable Energy Generation
摘要
Abstract
As the penetration rate of renewable energy sources(represented by photovoltaic and wind power)continues to increase,the characteristics of the power grid become increasingly complex.Traditional single-mode grid-following and grid-forming converters cannot fully meet the needs of power grids.Consequently,on one hand,under high penetration conditions,the problem of significant fluctuations in the impedance of local grids becomes more pronounced,exhibiting characteristics of strong to weak variations.The existing stability control of grid-connected converters still has application limitations.How to combine both control modes to ensure that the converters could compromise both economy and sta-bility is a research hotspot.On the other hand,the control of existing grid-connected inverters is hard to adapt to the nonlinear changes in the complex grid characteristics.Under high penetration conditions,influenced by the intermittency of renewable energy sources and grid faults leading to equipment or grid branch disconnections,the structure or parame-ters of the grid exhibit nonlinear changes.Therefore,exploring the application of nonlinear control in grid-following and grid-forming inverters to enhance their stability under complex grid conditions is of significant importance.In summary,we reviews several control methods that combine the advantages of both grid-following and grid-forming modes,based on the single-mode control of grid-forming and grid-following converters.These methods include single-converter du-al-mode switching control,single-converter dual-mode integrated control,and multi-converters station hybrid mode control.Furthermore,this paper elaborates how to improve the existing control of grid-connected inverters to adapt to the nonlinear changes in complex grid characteristics.Finally,we provide an outlook on future control technologies of con-verters.关键词
高渗透率/新能源并网/电网阻抗/非线性控制/构网型控制/跟网型控制Key words
high penetration rate/renewable energy grid connection/grid impedance/nonlinear control/grid-forming control/grid-following control引用本文复制引用
李明,常永康,毛永涛,刘恩俊,汪兴,张兴,耿华..高渗透率新能源发电并网变流器跟网/构网型稳定控制技术综述与展望[J].高电压技术,2024,50(11):4773-4788,16.基金项目
国家自然科学基金(52207211 （）
U2166601 （）
U23A20655) （）
中央高校基本科研业务费专项资金(JZ2024HGTB0259).Project supported by National Natural Science Foundation of China(52207211,U2166601,U23A20655),Special Funds for Basic Research Operating Ex-penses of Central Universities(JZ2024HGTB0259). （JZ2024HGTB0259）
