摘要
大规模风电场并网系统引起的次/超同步振荡对系统稳定性及风电消纳造成了不利影响,为此,对该类新型振荡的频率分量及宽频特征进行研究。首先,利用瞬时功率理论分析次/超同步振荡功率的表现形式,发现其同时包含交流分量与直流分量。其次,研究系统处于不同运行状态时次/超同步振荡功率的频率分量特征。最后,通过仿真算例分析,验证风电场并网系统次/超同步振荡功率的频率分量特征的理论分析结论。
The subsynchronous and supersynchronous oscillations caused by the large-scale wind farm integrated system have affected system stability and wind power consumption.Under the background,the frequency components and broadband characteristics of this new type of oscillation are studied in this paper.Firstly,the expression of subsynchronous and supersynchronous oscillation power is analyzed by applying the instantaneous power theory.It is found that the expression contains both AC and DC components.Secondly,the frequency components of subsynchronous and supersynchronous oscillation power are studied when the system is in different operating conditions.Finally,the conclusions obtained by theoretical analysis is verified by simulation.
作者
马闻达
王西田
解大
MA Wenda;WANG Xitian;XIE Da(Key Laboratory of Control of Power Transmission and conversion(SJTU),Ministry of Education,Shanghai 200240,China)
出处
《电力科学与技术学报》
CAS
北大核心
2021年第6期128-135,共8页
Journal of Electric Power Science And Technology
基金
国家自然科学基金(51677114)。
关键词
大规模风电场
次同步振荡
超同步振荡
功率
频率分量
large-scale wind farm
subsynchronous oscillation
supersynchronous oscillation
power
frequency component
