中国电机工程学报2025，Vol.45Issue(4)：1299-1310,中插7,13.DOI:10.13334/j.0258-8013.pcsee.232271
新型电力系统频域稳定判据的置信度问题探讨
Discussion on the Confidence of Frequency-domain Stability Criteria for New-type Power Systems
摘要
Abstract
Revealing the stability mechanism of the power system forms the foundation for resolving stability issues.However,the reliability of the obtained stability mechanism lacks analytical methods.To solve this problem,the connotation of stability mechanism of power system is analyzed and then the confidence of stability criterion and its derived mechanism is proposed.Next,focusing on the dynamic characteristics of power system in the equilibrium neighborhood,the confidence problem of stability criterion/mechanism is transformed into an evaluation problem of principal contradiction.The identification method of principal contradiction and the confidence evaluation method of stability criterion/mechanism are proposed from the robustness of the stability margin.Further,the reason why many typical frequency-domain criteria of power systems are valid is explained from the perspective of generalized eigenvalues approximating singular values.Finally,the validity of the proposed methods is verified by simulation.关键词
稳定机理/奇异值/广义特征值/鲁棒性/置信度Key words
stability mechanism:singular value/generalized eigenvalue/robustness/confidence degree分类
动力与电气工程引用本文复制引用
艾力西尔·亚尔买买提,辛焕海,王玮,鞠平..新型电力系统频域稳定判据的置信度问题探讨[J].中国电机工程学报,2025,45(4):1299-1310,中插7,13.基金项目
国家自然科学基金项目(U22B6008,U2166204). Project Supported by National Natural Science Foundation of China(U22B6008,U2166204). （U22B6008,U2166204）
