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This paper addresses the issues of inefficient recovery of regenerative braking energy, limited substation power supply capacity, and insufficient response to emergency traction in urban rail transit when using single energy storage systems. The research focuses on the application scheme and technical advantages of a supercapacitorlithium titanate battery hybrid energy storage system. First, by comparing supercapacitors, lithium titanate batteries, and flywheels in terms of key parameters such as power density, energy density, and cost, energy storage media are classified into two categories: powertype and energytype. Then, simulation results demonstrate that the hybrid energy storage system composed of supercapacitors and lithium titanate batteries outperforms single energy storage solutions in terms of recovering regenerative braking energy, enhancing substation power supply capacity, and providing emergency traction capabilities for trains. Based on this analysis, the study highlights the application potential of the supercapacitorlithium titanate battery hybrid energy storage system in urban rail transit, particularly its notable advantages in regenerative energy utilization technologies.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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