摘要
在直驱风电场并网电力系统闭环模型及各子系统开环模型的基础上,采用开环模式谐振理论解释了直驱风电场出现场网/场内振荡模式的机理。同时,为了抑制直驱风电场中场网/场内振荡模式,提出直驱风电场双层阻尼控制方案,即风电场层阻尼控制主要抑制场网振荡模式,风机层阻尼控制主要抑制场内振荡模式,阻尼控制参数采用全局搜索算法协调整定,共同提升直驱风电场并网系统的阻尼。最后对直驱风电场并网电力系统进行了模态分析和非线性仿真分析,验证了直驱风电场双层阻尼控制方案的有效性。
In this paper, an open loop model of PMSG, PMSG-based wind farm and power grid and a closed loop model of the power system connected with PMSG-based wind farm are established. Based on these model, the open loop mode resonance theory is used to explain the mechanism of wind-farm-grid/inside-wind-farm oscillation phenomena in PMSG-based wind farm. At the same time, in order to suppress the wind-farm-grid/inside-wind-farm oscillation, a bi-level damping control scheme of PMSG-based wind farm is proposed. The wind-farm-grid oscillation mode is mainly suppressed with wind farm-level damping controller, and the inside-wind-farm oscillation mode is mainly suppressed with wind-turbine-level damping controller. The parameters of the bi-level damping control scheme are coordinated to enhance the damping of the power system connected with PMSG-based wind farm. Modal analysis and nonlinear simulation analysis are carried out to verify effectiveness of the bi-level damping control scheme of PMSG-based wind farm.
作者
苏田宇
杜文娟
王海风
SU Tianyu;DU Wenjuan;WANG Haifeng(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources (North China Electric Power University),Changping District,Beijing 102206,China)
出处
《电网技术》
EI
CSCD
北大核心
2019年第2期417-424,共8页
Power System Technology
基金
中央高校基本科研业务费专项资金资助项目(2018ZD01)~~
关键词
直驱风电场
场网振荡模式
场内振荡模式
阻尼控制
PMSG-based wind farm
wind-farm-grid oscillation mode
inside-wind-farm oscillation mode
damping control
