电力系统保护与控制Issue(4)：79-83,5.
基于受扰轨迹模式分析的动态稳定辅助决策
Dynamic stability auxiliary decision-making based on mode shape analysis of disturbed trajectory
摘要
Abstract
According to state estimation results, the system disturbed trajectory in expected fault set is obtained by numerical simulation. Prony method is used to extract the dominant mode reflecting the system dynamic stability characteristics from the disturbed trajectory. The damping of the dominant mode is referenced to judge the system dynamic stability. If system dominant modes of multiple faults have the same frequency, the fault with the smallest system damping is selected as the critical fault for controlling. The direction of generation adjusting is judged by power perturbation method based on the unit clusters and participation factors, and the direction of generation adjusting in different weakly damped modes is coordinated. As required by numerical simulation iteration, the method uses parallel computing to search the smallest power adjust value with which single mode’s damp is improved to the safety value. If multiple mode’s adjustment measures contain the same generator, the generator’s adjust value is corrected in order to obtain unified generation adjusting actions for controlling multi-weakly damped modes. Simulation results of the North China Power Grid demonstrate the validity and practicality of the method.关键词
动态稳定/辅助决策/受扰轨迹/主导模式/参与因子Key words
dynamic stability/auxiliary decision-making/disturbed trajectory/dominant mode/participation factor分类
信息技术与安全科学引用本文复制引用
郑伟,鲍颜红,彭慧敏,徐伟,徐泰山,马明..基于受扰轨迹模式分析的动态稳定辅助决策[J].电力系统保护与控制,2013,(4):79-83,5.基金项目
国家电网公司科技项目 （）
