电力系统自动化2017，Vol.41Issue(16)：64-70,7.DOI:10.7500/AEPS20161208002
电力系统一次调频过程的超低频振荡分析
Ultra-low-frequency Oscillation of Power System Primary Frequency Regulation
摘要
Abstract
In the actual system,the ultra low-frequency frequency oscillation (ULFFO) event caused by instability of the primary frequency regulation process is different from the traditional low-frequency oscillation in both mechanism and performance.ULFFO belongs in the category of frequency stability.The single-machine single-load system is the simplest system to study this problem.Such key characteristics of ULFFO as oscillation frequency,damping and oscillation performance are tackled based on the single-machine single load system.The oscillation frequency and damping as well as their influencing factors are derived and analyzed in the simplified model.The Bode plot method,whose crossover frequency and phase margin corresponds to the oscillation frequency and damping ratio respectively,is used to investigate the oscillation frequency and damping in the detailed model.The applicability of the damping torque method in treating the damping of the prime mover system is confirmed.The amplitude of mechanical power is larger than that of electromagnetic power in 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/振荡频率和阻尼/阻尼转矩Key words
ultra-low-frequency frequency oscillation/active power and frequency control/primary frequency regulation/small disturbance stability/oscillation frequency and damping/damping torque引用本文复制引用
路晓敏,陈磊,陈亦平,闵勇,侯君,刘映尚..电力系统一次调频过程的超低频振荡分析[J].电力系统自动化,2017,41(16):64-70,7.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）
