针对独立风光发电中混合储能容量优化配置研究

摘要

In order to reduce the energy storage costs of stand-alone Wind/PV power generation system, it is necessary to configure the capacity ratio of storage system reasonably. By analyzing the energy storage characteristics of ultracapacitor and battery, an energy management strategy of the hybrid energy storage system is proposed, as well as the calculation procedure of LPSP based on this energy management strategy. An optimization model is constructed, which considers the lowest average annual cost of energy storing device based on life cycle cost theory as the optimization objective, and considers the reliability indexes such as LPSP of stand-alone Wind/PV System as the constraints, then the optimization problem is solved by improved PSO algorithm. Finally, it is indicated that the proposed energy management strategy could play the complementary advantages of two storage components more adequately, and effectively decrease energy storage system cost by the computing results comparison of an example.%　　为有效降低独立风光发电系统中混合储能系统的费用成本，需要合理的优化配置储能系统容量。通过分析超级电容器和蓄电池的储能特性，提出一种基于该类混合储能系统的能量管理策略，并分析了此能量管理策略下的系统负荷缺电率(LPSP)的计算流程。建立了以全生命周期费用(LCC)理论为基础的储能装置年均费用为目标函数，以独立风光发电系统LPSP 等可靠性指标为约束条件的储能容量优化模型，并运用改进粒子群算法对优化问题进行求解。通过算例结果分析，表明所提出的能量管理策略能够更加充分地发挥两种储能元件的互补优势，有效降低储能系统成本。