直流区域配电网电压稳定性分析  

Voltage Stability Analysis of DC Regional Distribution network

作　　者：张米 牟龙华[1] 刘汉宇[2] ZHANG Mi;MU Longhua;LIU Hanyu(Department of Electrical Engineering,Tongji University,Shanghai 201804,China;Marine Design&Research Institute of China,Shanghai 200011,China)

机构地区：[1]同济大学电气工程系,上海201804 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《电力系统及其自动化学报》2023年第7期1-9,35,共10页Proceedings of the CSU-EPSA

基　　金：上海市科学技术委员会资助项目(21142201200);中央高校基本科研业务费用专项资金资助项目(22120210164)。

摘　　要：直流区域配电网具有结构简单、可靠性高和线路损耗较小等优点,但其复杂的拓扑结构、多变的运行工况和结构的高度电力电子化等特点给其稳定运行带来了挑战。针对直流区域配电网电压稳定性问题,本文采用李雅普诺夫第一法和混合势函数理论对直流区域配电网的电压稳定性进行分析,提出直流区域配电网的电压稳定性判据;明确了直流区域配电网电压的静态稳定性与系统的参数有关,而暂态稳定性不仅与系统的参数有关,还与扰动的大小和类型有关。The DC regional distribution network has advantages such as simple structure,high reliability and small line loss.However,its stable operation is severely challenged by its complex topological structure,changeable operating conditions and highly power electronic structure.Aimed at the problem of voltage stability of the DC regional distribu⁃tion network,the voltage stability is analyzed in this paper by using the Lyapunov’s first method and mixed-potential function theory,and the corresponding voltage stability criterion is proposed.It is clarified that the static voltage stabili⁃ty of the DC regional distribution network is related to system parameters.In comparison,its transient stability is not on⁃ly related to system parameters,but also related to the magnitude and type of disturbances.

关 键 词：直流区域配电网 李雅普诺夫第一法 电压静态稳定性 混合势函数理论 电压暂态稳定性 

分 类 号：TM71[电气工程—电力系统及自动化]