电网技术Issue(9)：2461-2465,5.DOI:10.13335/j.1000-3673.pst.2014.09.023
基于轨迹特征根的扰动冲击机理探索
Study on the Mechanism of Disturbance Impact on Power System Transient Stability Based on Trajectory Eigenvalues
摘要
Abstract
Routine scanning of the transient stability of the North China-Central China interconnected power system finds that under some circumstances the disturbances occurring far away from the Jin-Yu ultra-high voltage (UHV) transmission line may cause more severe power oscillations on the Jin-Yu UHV line than the same type of disturbances occurring close to it. From the perspective that the corresponding oscillation mode is excited, a kind of mechanism of disturbance impact on power system transient stability based on trajectory eigenvalues is proposed to explain the above phenomenon. The nature of trajectory eigenvalue analysis which is to linearize the nonlinear system at non-equilibrium step by step and represent the nonlinear system by a series of linear systems is originally elaborated by case studies of power systems. The proposed mechanism is also validated by the case study of the North China-Central China interconnected power system.关键词
特高压/轨迹特征根/振荡模式/暂态稳定/电力系统Key words
ultra-high voltage/trajectory eigenvalue/oscillation mode/transient stability/power system分类
信息技术与安全科学引用本文复制引用
陈乾,沈沉,汤蕾..基于轨迹特征根的扰动冲击机理探索[J].电网技术,2014,(9):2461-2465,5.基金项目
国家电网公司大电网重大专项资助项目(SGCC-MPLG017-2012)；国家自然科学基金创新研究群体科学基金资助项目(51321005)。Project Supported Jointly by State Grid Corporation of China, Major Projects on Planning and Operation Control of Large Scale Grid (SGCC-MPLG017-2012), and the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (51321005) （SGCC-MPLG017-2012）
