电源学报2024，Vol.22Issue(4)：143-151,9.DOI:10.13234/j.issn.2095-2805.2024.4.143
基于小波包分解的城市轨道交通混合储能容量优化配置研究
Research on Optimal Allocation of Hybrid Energy Storage Capacity of Urban Rail Transit Based on Wavelet Packet Decomposition1
摘要
Abstract
Affected by factors such as wind speed and light intensity,wind power generation has characteristics of randomness,intermittence and large fluctuation,so its direct grid connection will cause damage to power grid.To realize a smooth grid connection of wind power and provide safe and reliable power supply to an urban rail transit system,a hybrid energy storage system composed of super capacitors and lithium batteries is proposed as a stabilizing measure.As the traction load of urban rail transit also fluctuates greatly,the hybrid energy storage system not only stabilizes the output of wind and photovoltaic(PV),but also stabilizes the traction load.The wavelet packet decomposition technology is used to decompose and reconstruct the traction load and wind and PV output power signals on multiple scales,the low-frequency wind and PV grid-connected power and medium-and high-frequency components are obtained,and batteries and super capacitors are used to absorb the medium-and high-frequency components,respectively.Aimed at the minimum comprehensive cost of hybrid energy storage system,the state-of-charge and power limit of the hybrid energy storage system are taken as constraints.The differential evolution particle swarm optimization algorithm with shrinkage factor is used to minimize the annual comprehensive cost of the hybrid energy storage system and optimize the internal power capacity allocation.Finally,based on the wind and PV power data in one region,the analysis results show that the proposed method can effectively suppress the wind power fluctuation and supply power for urban rail transit.关键词
城市轨道交通/混合储能系统/小波包分解/差分进化粒子群优化Key words
Urban rail transit/hybrid energy storage system/wavelet packet decomposition/differential evolution particle swarm optimization分类
信息技术与安全科学引用本文复制引用
刘仕兵,武沛池,喻星,但业光..基于小波包分解的城市轨道交通混合储能容量优化配置研究[J].电源学报,2024,22(4):143-151,9.基金项目
江西省科技厅重点研发计划一般项目(GJJ150530) （GJJ150530）
轨道交通风光储多时空尺度互补供电关键技术(20192BBH 80005) （20192BBH 80005）
轨道交通基础设施性能监测与保障国家重点实验室开放课题项目(GJJ 210652)This work is supported by General Project of Key Research and Development Plan of Jiangxi Provincial Department of Science and Technology under the grant GJJ150530 （GJJ 210652）
Key Technologies of Multi Temporal and Spatial Scale Complementary Power Supply for Wind-PV-Energy Storage of Rail Transit under the grant 20192BBH-80005 （）
Open Project of State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure under the grant GJJ210652 （）
