基于电压相量轨迹的电网静态稳定主导模式识别方法  

Dominant Pattern Recognition Method of Power System Static Stability Based on Voltage Phasor Trajectory

作　　者：郜燊 刘道伟 赵高尚 安军[1] 杨红英 马海滨 GAO Shen;LIU Daowei;ZHAO Gaoshang;AN Jun;YANG Hongying;MA Haibin(School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,Jilin Province,China;China Electric Power Research Institute,Beijing 100192,China)

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012 [2]中国电力科学研究院有限公司,北京市100192

出　　处：《电力建设》2024年第6期149-162,共14页Electric Power Construction

基　　金：国家重点研发计划资助项目(2018YFB0904500);国家电网公司总部科技项目(5100-202155016A-0-0-00)。

摘　　要：随着新型电力系统建设的推进,系统运行机理和动态特性愈加复杂,电网随机性增强,功角稳定和电压稳定常常相互交织不易区分,导致难以制定准确有效的调控策略,因此准确识别系统稳定主导模式对电网调控具有重要意义。首先,阐述了电网功角稳定和电压稳定的辩证关系;其次,以电压相量轨迹为切入点,解析了相轨迹几何特征及其轨迹灵敏度数学模型;在此基础上,基于轨迹灵敏度距离进行定量分析,揭示了电网静态稳定主导特征,并提出基于电压相量轨迹的电网静态稳定主导识别判据;最后,通过算例分析及对比校验,验证了文章所提方法的有效性,实现了电网静态稳定主导模式识别。With advancements in the construction of new power systems,the operating mechanism and dynamic characteristics of these systems have become increasingly complex,and the randomness of the power grid has increased.Power-angle and voltage stabilities are often intertwined and difficult to distinguish,hindering the formulation of accurate and effective control strategies.Therefore,accurately identifying the system stability of the main guidance mode is crucial for power grid regulation.First,this study analyzed the dialectical relationship between power-angle and voltage stabilities of the power grid.Second,taking the voltage phasor trajectory as the starting point,the geometric characteristics of the phase trajectory and its trajectory-sensitivity mathematical model were analyzed.On this basis,quantitative analysis was conducted based on the trajectory-sensitivity distance to determine the dominant characteristics of power-grid static stability,and a criterion for identifying the dominance of this stability based on voltage phasor trajectory was established.Finally,through case analysis and comparative verification,the effectiveness of the proposed method was verified,and the dominant pattern recognition of power-grid static stability was established.

关 键 词：功角稳定 电压稳定 电压相量轨迹 主导判据 主导模式识别 

分 类 号：TM712[电气工程—电力系统及自动化]