电力系统自动化2017，Vol.41Issue(10)：22-28,7.DOI:10.7500/AEPS20160721012
电力系统时滞稳定判据保守性差异量化评估方法
Diversity-based Quantitative Evaluation Method of Conservatism of Time-delay Stability Criteria for Power Systems
摘要
Abstract
The time-delay stability criterion based on the Lyapunov stability theory is commonly used to analyze the time-delay stability of power systems.Owing to the different Lyapunov functions and derivation processes adopted, different stability criteria tend to have different forms, computational efficiency and conservative properties.This paper tries to explain the difference in conservative properties by numerical calculation and a visualization method to provide guidance for seeking better criteria.First, four typical time-delay stability criteria are introduced based on a simple review of the time-delay system model.Furthermore, three kinds of indices reflecting the operational diversity of the power system are introduced by time-delay system simulation data.Then a numerical calculation method for evaluating the conservatism of time-delay stability criteria for power systems is presented.Finally, the application process of the evaluation method is shown by a typical first-order system.The effectiveness of the proposed method in multi-dimensional systems and multi-time-delay scenarios has been validated by a single-generator-infinite-bus system and a WSCC 3-generator 9-bus time-delay system.关键词
时滞稳定性/稳定判据/Lyapunov函数/保守性/差异性Key words
time-delay stability/stability criterion/Lyapunov function/conservatism/diversity引用本文复制引用
王蕾,董朝宇,贾宏杰,李晓萌..电力系统时滞稳定判据保守性差异量化评估方法[J].电力系统自动化,2017,41(10):22-28,7.基金项目
国家自然科学基金资助项目(51277128) （51277128）
国家高技术研究发展计划(863计划)资助项目(2015AA050403).This work is supported by National Natural Science Foundation of China (No.51277128) and National High Technology Research and Development Program of China (863 Program) (No.2015AA050403). （863计划）
