摘要
建立包含直驱型风力发电机、单级式光伏发电系统和储能蓄电池的风能与光伏混合微电网模型。混合微电网在并网运行时,通过储能蓄电池平滑风能和光伏电源的输出功率波动,维持公共连接点(PCC)电压;在孤岛运行时,对蓄电池采用低压配电网P/V和Q/f下垂控制策略,实现从并网运行到孤岛模式的切换。考虑实际风速和光照强度的变化,对风能与光伏混合微电网在并网和孤岛2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。
Modeling of a wind/PV hybrid micm-grid was carried out, which includes a direct-drive wind power generator, single-stage photovoltaic power generation system and storage battery. When the micro-grid operates on the grid-connected mode, the battery is able to regulate the voltage of the common coupling of point and smooth the power fluctuation of the wind generator and PV generation system. The battery with P/V and Q/f control strategy based on the droop characteristics was adopyed to isolate the micro-grid from the common grid in a rapid and seamless fashion. The control characteristics of the micro-grid were simulated and analyzed when it operated on grid-connected and islanding mode, considering of the actual wind speed and light intensity. The simulation results verify the feasibility of the proposed strategy.
出处
《中国电力》
CSCD
北大核心
2010年第4期81-85,共5页
Electric Power
基金
重庆市自然科学基金资助项目(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
微电源
风能
光伏
建模
micro-grid
micro-source
wind energy
photovohaie （PV）
modeling
