摘要
考虑光伏输出功率的波动性,加入可控微源—微型燃气轮机平滑光伏功率波动,建立了包含单级式光伏发电系统、微型燃气轮机发电系统的混合微电网模型。并网运行时,微型燃气轮机采用PQ控制,提供微电网的有功和无功功率支撑,在满足本地负荷基础上,实现混合微电网并网功率可调度;孤岛运行时,微型燃气轮机采用基于下垂特性的V/F控制,实现从并网到孤岛模式的切换。考虑实际光照强度的变化,对光伏/微型燃气轮机混合微电网在并网和孤岛两种模式中的运行特性进行仿真分析,验证控制方式的可行性。
Considering the fluctuations of PV output power,the controllable microsource microturbine（MT） is added to smooth PV power fluctuations,and a PV/MT hybrid microgrid is modeled composed of the single-stage photovoltaic and the microturbine power generation system.When the microgrid operates on the grid-connected mode,MT with PQ control is adopted to provide active and reactive power support for the microgrid,and make it possible to schedule the grid-connected power of hybrid microgrid under the condition of satisfying the local load.For isolated operation,MT with V/F control based on drooping characteristics is adopted to switch from grid-connected mode to islanding mode.Then considering the variation of actual light intensity,the operation characteristics of the microgrid are simulated and analyzed when it operates on grid-connected and islanding mode.The simulation results verify the feasibility of the proposed control strategy.
出处
《华东电力》
北大核心
2011年第1期86-91,共6页
East China Electric Power
基金
重庆市自然科学基金(CSTC2009BB6190)
输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512709208)~~
关键词
微电网
光伏
微型燃气轮机
建模
microgrid
photovoltaic
microturbine
modeling
