摘要
对孤网运行风光互补微电网电压频率控制和混合储能功率分配问题提出了混合储能管理控制策略,该策略将混合储能中锂电池设定恒功率和压频电源两种模式,对超级电容器采用电压/频率控制。锂电池作恒功率电源时,根据发电预测和负荷预测结果平复系统波动;超级电容器则依据电压/频率控制补偿系统实时功率缺额,保障微电网稳定运行。为此在MATLAB/SIMULINK中搭建了仿真模型,进行了孤网运行、能量分析、模式切换三次仿真,结果表明该策略正确。
In order to solve the problem of voltage and frequency control and power allocation in PV-wind microgrid, a management and control strategy for hybrid storage is presented. Hybrid storage devices are lithium battery and supercapacitor in this strategy. Lithium battery is set two modes： constant power and voltage frequency power. The supercapacitor is arranged voltage/frequency control. As the source of supplying constant power, it can stabilize power fluctuation based on prediction of power generation and load forecasting. Supercapacitor compensates real-time power shortage according to the voltage/frequency control in order to ensure stable operation of microgrid. Simulation models are built in MATLAB/SIMULINK. Simulation Contains isolated grid operation, energy analysis and mode exchange. The results show that the strategy is right.
出处
《水电能源科学》
北大核心
2014年第6期180-184,共5页
Water Resources and Power
基金
国家国际科技交流与合作专项基金项目(2010DFB63200)
山西省高等学校中青年拔尖创新人才支持计划
关键词
微电网
混合储能
能量平衡
预测和管理
microgrid
hybrid energy storage
energy balance
forecasting and management
