基于电压无功控制模型的光伏电网储能分析

Energy Storage Analysis of Photovoltaic Power Grid Basedon Voltage-reactive Power Control Model

在含高比例光伏并网配电网中,设计了一种基于电压无功控制模型的光伏电网储能模型。模型外层选择电池储能系统(battery energy storage systems, BESS)位置和容量,内层为BESS有功和无功功率分配。在IEEE 28节点系统上进行验证。结果表明:BESS的功率分配完成优化后,无功功率损耗与有功功率损耗的均降低幅度20%左右。系统电压波动在电压无功控制及BESS设备协同调度影响下不断减弱,进一步促进电能质量的提升,大大降低了系统能量需求。

In a high proportion photovoltaic grid connected distribution network,a photovoltaic grid energy storage model based on voltage reactive power control model was designed.The outer layer of the model selected the battery energy storage systems(BESS)position and capacity,while the inner layer allocated the active and reactive power of the BESS.The performance verification was carried out on the IEEE 28 node system.The results show that after optimizing the power allocation of BESS,the reduction in reactive power loss and active power loss is about 20%.The fluctuation of system voltage continues to weaken under the collaborative scheduling influence of voltoge var control and BESS equipment,further promoting the improvement of power quality and greatly reducing the energy demand of the system.