电力系统自动化2017，Vol.41Issue(22)：10-15,25,7.DOI:10.7500/AEPS20170528001
多机系统超低频振荡分析与等值方法
Analysis of Ultra-low-frequency Oscillations in Multi-machine System and Equivalent Method
摘要
Abstract
There are significant differences in the oscillation performance and the mechanism of the ultra-low-frequency frequency oscillations (ULFFO) from that of low frequency oscillations.The ULFFO problem is analyzed in the multi-machine system.In the ULFFO,all of generator speeds change coordinately.As a consequence,the system,s frequency oscillates together.An equivalent method for ULFFO analysis is proposed to increase computation efficiency,in which the multi-machine system is equivalent to a single-machine system.Damping torques in the prime mover systems of the generator are decoupled.The sum of them and the damping torques in the electromagnetic power affect the damping ratio of the system.The results provide guidance for the analysis and control of ULFFO in the actual system.关键词
超低频频率振荡/有功频率控制/一次调频/小扰动稳定/振型/单机等值/原动系统阻尼Key words
ultra-low-frequency frequency oscillation/active power and frequency control/primary frequency regulation/small disturbance stability/oscillation mode/single-machine equivalence/damping of prime mover system引用本文复制引用
陈磊,路晓敏,陈亦平,闵勇,张勇,唐卓尧..多机系统超低频振荡分析与等值方法[J].电力系统自动化,2017,41(22):10-15,25,7.基金项目
This work is supported by National Natural Science Foundation of China (No.51377002) and China Southern Power Grid Company Limited.国家自然科学基金资助项目(51377002) （No.51377002）
中国南方电网有限责任公司科技项目. （）
