摘要
近年来,以直流单微网为构成单元的直流微网群因其具有新能源渗透率更高、稳定性更强、能效更好等优势越来越受重视。针对直流微网群提出了一种完全分布式优化调度策略,实现了直流微网群各分布式发电机(distributed generators,DG)与发电成本和碳排放有关的增量成本一致性目标。通过分布式通信结构对目标函数分别在微网层、网群层改进共识算法迭代寻找最优功率分配比例。以寻优结果为指令并考虑直流微网群中线路电阻对功率比例均分精度的影响设计了新型下垂控制器调度各微源,实现了直流微网群经济低碳运行。在MATLAB/Simulink仿真平台搭建了仿真模型,验证了所提控制策略的可行性。
In recent years,DC microgrid cluster has attracted attention for its higher permeability,stronger stability,better energy effi-ciency and so on.In this paper,a fully distributed optimal strategy is proposed to achieve the consistency of incremental cost,which is about generation cost and carbon emission.Based on the distributed communication,the consensus algorithm calculates the objective function at the microgrid level and the cluster level respectively.The results change the droop control of each distributed generators(DG).Considering the influence of line resistance on the accuracy of power proportional sharing,a novel droop controller is de-signed.The simulation model is built on the MATLAB/Simulink to verify the feasibility of the proposed control strategy.
作者
李瑞
李占凯
张福民
李炬
张晓宇
何国杰
LI Rui;LI Zhankai;ZHANG Fumin;LI Ju;ZHANG Xiaoyu;HE Guojie(Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)
出处
《南方电网技术》
CSCD
北大核心
2022年第1期49-57,共9页
Southern Power System Technology
基金
国家自然科学基金(51677052)
河北省高等学校科学技术研究项目(ZD2020133)。
关键词
直流微网群
优化调度
分布式分层控制
共识算法
增量成本一致性
新型下垂控制
DC microgrid cluster
optimal scheduling
distributed hierarchical control
consensus algorithm
incremental cost consis-tency
novel droop control
