摘要
为提高直驱永磁风力发电系统的性能,在直流侧增加新型钒氧化还原液流电池(VRB)储能装置。设计了相应的双向DC/DC变换器控制策略,在风速变化时,VRB能够通过快速充放电平抑系统发电机输出功率波动以及平衡电网需求功率;在电网电压跌落时,还可提高低电压穿越能力。对具有储能电池的风力发电系统建立了仿真模型,详细分析了系统在风速变化、电网需求功率变化以及电压跌落时的动态响应过程和运行特性,并给出了仿真验证。仿真结果表明,在直流侧加VRB储能装置,有效地提高了直驱风电系统并网运行性能和低电压穿越能力,系统动态响应速度快。
To enhance the performance of direct-drive permanent magnet wind power generation system,a new type of vanadium redox flow battery（VRB） energy storage system（ESS） is added at DC-side of the converter.Correspondinglyt,he control strategy of bi-directional converter is developed.VRB ESS can quickly charge and discharge so that it can smooth the fluctuation of generator output power and balance the demand for power grid when the wind rapidly changes;while the voltage grid dips,it can also improve the ability of LVRT.The simulation model is established,and the dynamic response process and operation characteristics are analyzed in detail.The simulation results show that the performances of grid connected operation and LVRT are effectively improved for the direct-drive wind power system by adding VRB ESS at the DC-side,and the dynamic respond speed of system is fast.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第14期43-48,78,共7页
Power System Protection and Control
基金
台达电力电子科教发展计划基金(DREG2009006)
电力系统国家重点实验室项目(SKLD09KZ10)资助~~
关键词
直驱风电系统
永磁同步发电机
储能电池
钒氧化还原液流电池
低电压穿越
direct-driven wind power system
permanent magnet synchronous generator
energy storage battery
vanadium redox flow battery（VRB）
low voltage ride through（LVRT）
