电力系统自动化2017，Vol.41Issue(17)：9-14,6.DOI:10.7500/AEPS20161208004
利用暂态能量流的超低频振荡在线分析与紧急控制方法
Online Analysis and Emergency Control of Ultra-low-frequency Oscillations Using Transient Energy Flow
摘要
Abstract
The negative damping torque of the generator's prime mover system is considered as the major cause of ultra-low-frequency frequency oscillation (ULFFO) and tripping the primary frequency regulation of the units with negative damping can increase the damping of the system and suppress the oscillation.The key to emergency control is online evaluation of damping of prime mover systems.An online analysis and emergency control method of ULFFO based on transient energy flow is proposed.The transient energy flow method useful to the low frequency oscillation analysis is extended to the analysis of ULFFO.The consistency of the energy flow method and the damping torque method in analyzing the prime mover system's damping in ULFFO is proved.An online evaluation method of the damping torque coefficient of the prime mover system is proposed according to the existing wide-area measurement system data, and the procedure of ULFFO emergency control is given.Simulation results are proof of the effectiveness of the proposed method which provides technical means for online control of ULFFO.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/能量流/阻尼在线评估/紧急控制Key words
ultra-low-frequency frequency oscillation/active power and frequency control/primary frequency regulation/small disturbance stability/energy flow/online damping evaluation/emergency control引用本文复制引用
陈磊,路晓敏,陈亦平,闵勇,莫维科,刘映尚..利用暂态能量流的超低频振荡在线分析与紧急控制方法[J].电力系统自动化,2017,41(17):9-14,6.基金项目
国家自然科学基金资助项目(51377002) （51377002）
中国南方电网有限责任公司科技项目.This work is supported by National Natural Science Foundation of China (No.51377002) and China Southern Power Grid Company Limited. （No.51377002）
