- 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: | LI Qunzhan, PENG You, HUANG Xiaohong, WANG Hanlin, REN Tao. Crossing Power Governance Approach of Continuous Power Supply System in Electrified Railway[J]. Journal of Southwest Jiaotong University, 2024, 59(6): 1245-1255. doi: 10.3969/j.issn.0258-2724.20220887
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A novel crossing power governance approach was proposed to mitigate the effects of crossing power in the traction power supply system while taking regenerative braking energy utilization into account. First, the power flow under different operating conditions was derived based on the structure of the continuous power supply system, and the method for detecting crossing power was analyzed. Second, a power transfer and energy storage unit was set using the single-phase combined co-phase traction substation, and the working mechanism of the improved system was analyzed. Then, a cooperative control strategy of crossing power governance was proposed by combining the upper control strategy of power distribution and negative sequence satisfactory compensation with the lower control strategy of converter control. Finally, the amount of crossing power was calculated using the experimental data of a railway line, and the cost-effectiveness of the governance measure was evaluated. In addition, the accuracy and efficacy of the proposed scheme were verified by simulation. The research results show that the proposed system and its control strategy can effectively mitigate the crossing power and regenerative braking energy, with the utilization rate of the crossing power of the power transfer and energy storage unit exceeding 70% in the case of traction substation and traction network loss. The system is highly economical and feasible.
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