储能科学与技术2025，Vol.14Issue(2)：688-698,11.DOI:10.19799/j.cnki.2095-4239.2024.0652
含齿轮变速与链式传动机构的斜坡重力储能系统能效分析模型与实验验证
Energy efficiency analysis model and experimental verification of gravity energy storage system with gear box and chain transmission mechanisms
摘要
Abstract
To study the energy efficiency and the loss proportion of each link in the charging and discharging process of the transmission chain slope gravity energy storage system(TCS-GESS),the mathematical expression of each link loss and the corresponding energy efficiency calculation method were derived for the mass block movement,mechanical transmission,and electrical driving links of the system.Furthermore,an energy efficiency analysis model for TCS-GESS using MATLAB/Simulink was established.An experimental scheme was designed under charging and discharging conditions and measured the energy efficiency of each link of the system under different load conditions using a 2.2 kW gravity energy storage prototype.The accuracy and practicability of the energy efficiency analysis model were verified by comparing the results of the energy efficiency calculated with the five dimensions of speed,mechanical power,charging and discharging power,transmission loss,and motor loss.The results show that the system efficiency gradually increases with an increase in load.Among them,the chain loss accounts for a large proportion of each loss link.The loss of gearbox and gear plate was not significantly altered and accounts for a small proportion.The motor loss accounts for a medium proportion and increases as the load increases under charging and discharging conditions.Under rated load conditions,the charge and discharge efficiencies were 59.5%and 37.4%,respectively,and the system efficiency was 23.2%.Furthermore,the charging and discharging efficiency of the GESS with the same transmission mechanism and different rated powers was predicted.The results indicate that the charging and discharging efficiency was<68%when the system capacity was<1 MW,and the energy efficiency improvement potential of the system was limited when the capacity was>10 MW.Based on the findings from this study,this paper recommends selecting the optimal power range for a GESS utilizing the same transmission mechanism within the range of 1-10 MW.关键词
重力储能系统(GESS)/链式传动/损耗计算/能效模型Key words
gravity energy storage system(GESS)/chain transmission/loss calculation/energy efficiency model分类
动力与电气工程引用本文复制引用
高天,王祖凡,方舒扬,张佑康,张连成,黄永章,赵海森..含齿轮变速与链式传动机构的斜坡重力储能系统能效分析模型与实验验证[J].储能科学与技术,2025,14(2):688-698,11.基金项目
国家电网公司总部科技项目(5419-202240053A-1-1-ZN). （5419-202240053A-1-1-ZN）
