Control strategy for tracking the output power of photovoltaic power generation based on hybrid energy storage system

被引：0

作者：

Tian, Chunguang ^{[1
]}

Tian, Li ^{[1
]}

Li, Dexin ^{[1
]}

Lü, Xiangyu ^{[1
]}

Chang, Xuefei ^{[1
]}

机构：

[1] Electric Power Research Institute, Status Grid Jilin Electric Power Co. Ltd, Changchun,130021, China

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2016年 / 31卷 / 14期

关键词：

Energy storage - Electric load dispatching - Lithium batteries - Supercapacitor - Solar energy - Optimal control systems - Digital storage - Hybrid systems;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Hybrid energy storage system has the technical characteristics of both energy storage and power storage. It can effectively reduce the photovoltaic power prediction error, hence improve the reliability where PV forecast output is used as the reference of the power dispatch. Therefore, this paper proposes an optimal control strategy for hybrid energy storage system to improve the capacity of photovoltaic output tracking the target output power. This strategy uses the compound control method to control the internal energy coordination control and the multi-objective optimization control. It can reasonably distribute the charge and discharge power of battery and super capacitor, and control the output of the hybrid system to make up for the deviations between the predicted power and the actual power. By analyzing the data of 250 days output power from a domestic 40 MW photovoltaic power station, it is shown that this strategy can not only effectively trace the predicted output power of PV, but also make full use of the characteristics of different storage mediums. It reduces the charge and discharge depths of the battery, and consequently the hybrid storage can be better applied. © 2016, The editorial office of Transaction of China Electrotechnical Society. All right reserved.

引用

页码：75 / 83