电力电子化电力系统电压功角动态稳定性建模分析方法  

Modeling and Analysis Method for Voltage Power Angle Dynamic Stability of Power Electronic Power System

作　　者：徐文林 肖湘晨 张璨辉 徐慧婷 卜龙敏 肖英[4] XU Wenlin;XIAO Xiangchen;ZHANG Canhui;XU Huiting;BU Longmin;XIAO Ying(Marketing Department,State Grid Hunan Electric Power Co.,Ltd.,Changsha 410004,China;State Grid Hunan Electric Power Co.,Ltd.,Changsha 410000,China;Marketing and Operation Department,State Grid Hunan Power Supply Service Center(Metrology Center),Changsha 410007,China;National Park and Tourism College,Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]国网湖南省电力有限公司营销部,长沙410004 [2]国网湖南省电力有限公司,长沙410000 [3]国网湖南供电服务中心计量中心营销运营部,长沙410007 [4]中南林业科技大学国家公园与旅游学院,长沙410004

出　　处：《电源学报》2025年第1期173-180,共8页Journal of Power Supply

摘　　要：为了避免电力电子化电力系统在运行中因动、静态负荷引起的动态问题,影响系统稳定性,提出1种电压功角动态稳定性建模分析方法。首先使用延拓法追踪电力系统平衡解流形,采用小扰动分析法计算电压功角状态矩阵,对电压功角动态稳定性进行判断;然后采用电力系统稳定模式判别方法,对失稳状态中电压功角状态变量关联情况进行分析,判定系统失稳类别,实现电压功角动态稳定性模型的构建与分析。实验结果表明:负荷模型直接关系着电子化环境下电力系统动态失稳类型,静态负荷模型易造成功角失稳,动态负荷模型易造成电压失稳,时域仿真结果与状态变量参与因子判别结果相吻合;通过功角失稳与电压失稳的测试对发电机角度与节点电压情况进行分析,证明了所提方法在电压功角动态稳定性分析中具有较好的效果,对电力系统工程领域的研究具有一定的参考价值。To avoid the dynamic problems caused by dynamic and static loads in the operation of a power electronic power system,which affect the system stability,a modeling and analysis method for the voltage power angle dynamic stability is proposed.The continuation method is used to track the equilibrium solution manifold of the power system,and the small disturbance analysis method is used to calculate the voltage power angle state matrix to judge the dynamic stability of voltage power angle.By means of the power system stability mode discrimination method,the correlation between voltage and power angle state variables in the instability state is analyzed,the system instability category is determined,and the construction and analysis of voltage and power angle dynamic stability model is realized.Experimental results show that the load model is directly related to the category of dynamic instability of power system in an electronic environment.The static load model is easy to cause power angle instability,while the dynamic load model is easy to cause voltage instability.The time-domain simulation results are consistent with the discrimination results of state variable participation factor.Through the tests of power angle instability and voltage instability,the generator angle and node voltage are analyzed.It is proved that the proposed method has a good effect in the analysis of voltage and power angle dynamic stability,providing certain reference value for researches in the field of power system engineering.

关 键 词：延拓法 电压功角 动态稳定性 平衡解流形 小扰动分析法 失稳类别判定 稳定性建模 

分 类 号：TM464[电气工程—电器]