- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | LIU Wei, LI You, ZHANG Jian, ZHANG Hao, ZHANG Yan. Calculation of Urban Rail AC/DC Power Supply with Intermittent Duty of Inverter Feedback Devices[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 384-391. doi: 10.3969/j.issn.0258-2724.20200594
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In practical applications, inverter feedback devices work in intermittent duty, and its working characteristic model must be considered when determining its location and capacity design in the power supply calculation. Thus, an AC/DC alternating iterative power flow calculation algorithm with intermittent duty of inverter feedback devices is proposed for urban rail transit. A power-based dynamic adjustment strategy is proposed to realize state transition in the operation of inverter feedback devices. The full-day energy consumption is calculated for the entire line starting from the main substation, and the influences of the starting voltage of different inverter feedback devices, the no-load voltage of the rectifier unit and the number of train departures affect are analyzed. The whole line of an actual metro project is simulated and the simulation results prove that the proposed algorithm is more consistent with the load process of the inverter feedback devices in actual project. The statistical results show that the starting voltage of the inverter feedback devices will affect the system energy saving, and a proper starting voltage have a significantly favorable effect on the energy saving of the power supply system equipped with inverter feedback devices, which can save 12.23% of the energy consumption compared with the system without inverter feedback devices; when the no-load voltage of the rectifier is high, or when there are few trains, the starting voltage of the inverter feedback device should be reduced accordingly to obtain a better energy saving effect.
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