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The operating mileage and total energy consumption of urban rail transit systems are constantly increasing. To accurately calculate energy consumption, the actual trainside energy consumption formula that considers dynamic motor efficiency and an energy consumption simulation and calculation model based on the singleand multiplemasspoint models of train operation are constructed in this study. First, the energy flow process of the train traction drive system was studied, and the relationship between the efficiency of each component and the train operation state was established. Second, the actual train energy consumption calculation based on electric power was deduced according to the twotable method by combining the efficiency conversion of each component. The factors affecting energy consumption were comprehensively analyzed, and an energy consumption simulation and calculation method considering singleand multimasspoint train models was proposed. Finally, taking the four stations and three intervals of a regional line in China as an example, the results show that the operation energy consumption under either the singleor the multiplemasspoint train operation model achieves a deviation of less than 5% compared with the actual energy consumption, which verifies the accuracy of the proposed energy consumption model. In addition, the operational energy consumption of the multimass model was further reduced by a 1.66% deviation from that of the singlemass model. The proposed model provides theoretical support for the optimization of train energy savings and actively contributes to the development strategy of China's green economy.
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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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