光伏发电功率预测及储能系统参与的源-荷平衡分析

Power Forecasting of Photovoltaic Power Generation and Source Load Balance Analysis of Energy Storage System

为统筹协调光伏发电功率消纳,在光伏电站引入储能系统,结合光伏功率预测,平抑光伏发电功率波动,降低对电网的冲击,进一步提高电网系统稳定性。在光伏发电功率预测中,充分考虑光伏设备离线等突发因素对功率输出的影响,对储能系统接入位置进行比较分析,选择在光伏发电系统并网点前的直流侧接入,相对减少损耗,提高效率。分析结果表明,该方案有助于系统优化运行和调度管理,具有较好的工程应用潜力。

The energy storage system is used for the photovoltaic power station to coordinate the power consumption of photovoltaic power generation.This study combined photovoltaic power prediction to smooth the fluctuation of photovoltaic power generation,reduce the impact on the power grid,and improve the stability of the power grid system.It considered the influence of sudden factors such as off-line photovoltaic equipment on power output.It also compared and analyzed the access location of the energy storage system and selected the DC side access in front of the grid connection point of the photovoltaic power generation system to relatively reduce losses and improve efficiency in the prediction of photovoltaic power generation.The analysis shows that the scheme is helpful to optimize system operation and dispatching management,and has good engineering application potential.