电动汽车规模化接入配电网的充电优化

发布时间：2018-05-24 21:40

本文选题：配电 + 电动汽车　；参考：《电力自动化设备》2015年06期

【摘要】：将配变台区下的电动汽车看成一个小型"集聚体",提出基于配电网安全运行的充电优化问题模型,该模型以有功网损最小为目标函数,计及节点电压、线路潮流、配变容量、集中式充电功率的动态爬升约束以及充电能量平衡约束,优化慢充模式下"集聚体"的充电功率。分区代理商负责监控所管辖台区下每辆汽车的充电行为。采用原-对偶内点法求解该模型,IEEE 33节点系统、PGE 69系统以及一个实际的119节点配电系统的计算结果表明该算法具有良好的收敛性和优化效果。通过动态平衡充电负荷,有效降低了系统网损,平抑了负荷波动,改善了末端电压水平,且避免了随机充电在某些时段可能造成的短时电压质量下降、馈线重载及配变过载等问题,提高了配电网运行的经济性和安全性。
[Abstract]:The electric vehicle under the distribution transformer station is regarded as a small "agglomeration", and a charging optimization model based on the safe operation of the distribution network is proposed. The model takes the minimum active power loss as the objective function, taking into account the node voltage, line power flow, distribution capacity, etc. The dynamic climbing constraint and charge energy balance constraint of centralized charging power are used to optimize the charging power of "agglomerate" in slow charging mode. District agents are responsible for monitoring the charging behavior of each vehicle in the area under its jurisdiction. The calculation results of the IEEE33-bus system / PGE69 system and a real 119-bus distribution system using primal-dual interior point method show that the proposed algorithm has good convergence and optimization performance. By dynamically balancing the charging load, the system network loss is effectively reduced, the load fluctuation is suppressed, the terminal voltage level is improved, and the short-time voltage quality degradation caused by random charging is avoided. The economy and security of distribution network are improved because of the overloading of feeder and distribution transformer.
【作者单位】：广西大学广西电力系统最优化与节能技术重点实验室;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2013CB228205) 国家自然科学基金资助项目(51167001)~~
【分类号】：U469.72;TM910.6

【共引文献】