直流纳网互联运行的在线能量管理方法

发布时间：2018-06-19 21:44

本文选题：直流纳网 + 互联　；参考：《电力系统自动化》2017年01期

【摘要】：针对直流纳网互联形成的纳网群,提出一种在线能量管理方法,在纳网内部层面与纳网交互层面实现能量流控制。基于李雅普诺夫优化理论,构建虚拟储能队列,提出以提高光伏替代率与保证队列稳定性为目标的数学模型,将能量管理问题解耦为每个时刻的线性规划问题,不依赖系统中的未来信息,只需获取当下时刻的信息即可对纳网之间的交换电量做出实时决策。通过实际采集的用户负荷及光伏数据构造了仿真算例,结果验证了所提能量管理方法在满足纳网用户负荷需求的同时,有效地提高了可再生能源在直流纳网群中的消纳。同时,测试结果表明该算法决策时间较短,能满足系统的实时性要求。
[Abstract]:In this paper, an on-line energy management method is proposed to control the energy flow at the internal level of the network and the interaction level between the network and the network, aiming at the group of nanowires formed by the interconnection of DC nanowires. Based on Lyapunov optimization theory, the virtual energy storage queue is constructed, and a mathematical model aiming at improving photovoltaic substitution rate and ensuring queue stability is proposed. The energy management problem is decoupled into linear programming problem at every moment. It does not depend on the future information in the system. It can make real-time decision on the switching power between the network only by obtaining the information at the present time. A simulation example is constructed based on the collected user load and photovoltaic data. The results show that the proposed energy management method not only meets the demand of the user load, but also effectively improves the absorption of renewable energy in the DC network group. At the same time, the test results show that the decision time of the algorithm is short and can meet the real-time requirement of the system.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);
【基金】：国家高技术研究发展计划(863计划)资助项目(2014AA052001)~~
【分类号】：TM73

【相似文献】