摘要
在新型电力系统发展背景下,交直流混合微电网集合了交流微电网和直流微电网的优势,能够充分利用各种能源资源、提高能源利用率。但由于系统内电力电子设备特性的多样性、复杂性,使得微电网的稳定性问题较为突出。首先,阐述了交直流混合微电网典型拓扑结构及其控制特点,并介绍其典型应用场景,针对微电网稳定性问题进行简要归纳总结。然后,介绍了交直流混合微电网小扰动稳定性和大扰动稳定性分析方法,例如模式分析法、频域分析法等小扰动稳定性分析方法,以及时域仿真法、直接法、混合势函数理论等大扰动稳定性分析方法,并对提升稳定性措施方法进行分析总结。最后,对交直流混合微电网稳定性提升方法进行了总结及展望。
In the context of the development of new power system,AC/DC hybrid microgrid combines the advantages of AC and DC microgrid,which can make full use of all kinds of energy resources and improve the energy utilization rate.However,due to the diversity and complexity of the characteristics of power electronic equipment in the system,the stability of microgrid is relatively prominent.Firstly,the article describes the typical topology and control characteristics of AC/DC hybrid microgrid,also introduces the typical application scenarios and briefly summarizes the microgrid stability problems.Secondly,the analysis methods for smallsignal stability and large-signal stability in hybrid AC/DC microgrids were introduced.For small-signal stability analysis,methods such as modal analysis and frequency-domain analysis were presented.For large-signal stability analysis,approaches including timedomain simulation,direct methods,and mixed potential function theory were discussed.Additionally,measures to enhance stability were analyzed and summarized.Finally,the methods for improving stability in hybrid AC/DC microgrids were summarized with future perspectives.
作者
古晓凤
袁旭峰
郑华俊
熊炜
GU Xiaofeng;YUAN Xufeng;ZHENG Huajun;XIONG Wei(College of Electrical Engineering,Guizhou University,Guiyang 550025,China)
出处
《供用电》
北大核心
2025年第9期8-20,共13页
Distribution & Utilization
基金
国家自然科学基金项目(52367005,52367019)
国家重点研发计划项目(2022YFE0205300)。
关键词
交直流混合微电网
稳定性
小扰动稳定
大扰动稳定
综述
AC/DC hybrid microgrid
stability
small disturbance stability
large disturbance stability
review
