Energy-saving Operation Optimization Strategy of Urban Rail Transit Co-phase Energy Storage Power Supply System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 6
Abstract
Objective As modular co-phase power supply devices are used in Guangzhou Metro Line 18,it is necessary to study the energy-saving operation optimization strategy of the co-phase energy storage power supply system in order to solve the problem of low utilization rate of regenerative braking energy in the co-phase traction power supply system. Method With the goal of minimizing the daily electricity cost of traction substation to balance the node power,and constrained by operation characteristics of power supply devices and energy storage devices, an optimized energy-saving model of co-phase energy storage power supply system is established. Based on the measured load process data of a traction substation on Guangzhou Metro Line 18, the traction load process of urban rail transit is analyzed. CPLEX commercial planning solver is used to solve the above model and finally the optimal energy management scheme of the co-phase energy storage system is obtained. Result & Conclusion The energy storage power supply system with the supercapacitor connected to DC link of the modular co-phase power supply device works as follows: with the peak cutting and valley filling effect of the supercapacitor on the traction load, the regenerative braking energy utilization rate of the traction power supply system can be increased, saving the electricity cost of urban rail transit operators consequently. The test results show that compared with the traditional co-phase power supply system, the co-phase energy storage power supply system with supercapacitor can increase the regenerative braking energy utilization rate to 92.88%, and reduce the daily electricity cost by 9.65%, showing remarkable energy saving effect. increase the regenerative braking energy utilization rate to 92.88%.
Authors and Affiliations
Feng HOU, Shuai WANG, Zhongrui SUN
Keywords
Related Articles
- EP ID EP737783
- DOI 10.16037/j.1007-869x.2024.06.054
- Views 78
- Downloads 1
Research on Characteristics of Shanghai Rail Transit Commuter Flow
Objective Shanghai′s rail transit boasts of huge commuter flow, and it is necessary to analyze the spatial distribution, connection and other characteristics of the passengers using urban rail transit for commuting. Meth...
Fault Diagnosis Method for High-speed Train Gearbox Bearing Based on Improved VMD and Temperature-vibration Feature Fusion
Objective Existing methods for high-speed train gearbox bearing monitoring and diagnosis in China often rely solely on temperature or vibration data. Rely solely on a single temperature data point may result in missing e...
Sensitivity Analysis of Design Parameters for Suspended Monorail Single-ribbed Arch Bridge
[Objective] As there are few case studies on suspended monorail single-ribbed arch bridge, it is necessary to analyze the sensitivity of different design parameters to better instruct the design and construction of the b...
Optimization of CBTC System Protection Section Trigger Strategy
Objective The CBTC (communication-based train control) system on urban rail transit lines has certain limitations in specific scenarios: when there are multiple protection sections along a route, the interlocking system...
Dynamic Health Evaluation Method for Metro Communication System Based on Random Forests Algorithm
Objective The health of metro communication system has a direct bearing on the efficiency and safety of metro operation. In view of the problems such as one-sided evaluation results and subjective evaluation criteria in...