Calculation Method for Number of Battery Energy Storage Trams in Operation
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 2
Abstract
[Objective] To address the issues that the conventional method for calculating the number of VO (vehicles in operation) is not applicable to battery energy storage trams and the overly complex layout of train operation diagrams, a revised calculation formula for determining VO number is proposed. [Method] The conventional method for calculating VO number unaffected by charging is introduced. Based on this, taking the influence of tram charging process into account, a calculation method for determining VO number of battery energy storage trams that meets operational plan is proposed. Calculation assumptions are presented, and the calculation methods for various related parameters are described. Taking the VO number calculation of a battery energy storage tram line in a city as example, the proposed method is used to analyze the situation where the train goes off-line for charging after reaching the endurance mileage during on-line operation. [Result & Conclusion] The train operation process is divided into three stages: the concentrated on-line process before peak hours, the on-line train operation process, and the concentrated train off-line replacement and on-line supplement process. The calculated VO number has an error of approximately 5% compared to the results obtained through the layout of train operation diagram, indicating that the proposed method for calculating VO number can meet operational requirements with a certain margin.
Authors and Affiliations
Mengran ZHANG, Xiaohong FANG, Jingsong DUAN
Stress and Deformation Analysis of Green Prefabricated Slope Surface Protection Structure for Deep and Large Foundation Pit
Objective Excavation of deep and big foundation pit destroys the equilibrium state of the original stress field in the soil, leading to ground deformation. Foundation pit deformation can be controlled by adopting GRF (gr...
Optimization Scheme of Internal Circulating Heat Dissipation System for Tram Ground Charging Device
[Objective] To solve the problems of unstable shell protection performance, complex HD (heat dissipation) system configuration, and low HD efficiency existing in current tram ground charging devices, a scheme of ICHD (in...
Timing Design and Commissioning Scheme for Linkage between Urban Rail Transit Electric Passenger Car Doors and Platform Doors
Objective Realizing the synchronous linkage between electric passenger car doors and platform doors (hereinafter referred to as "car-platform doors") in urban rail transit can further improve the metro operation efficien...
Grouting Reinforcement Method and Application for Existing Piles in Open-excavation Tunnel Under-passing Bridge Engineering
Objective When constructing a new tunnel under-passing bridge with open-excavation method, it is crucial to protect the existing pile foundation system within the excavation pit. In the project of South Hubin Road Tunnel...
Research on Traction Power Supply System for Shanghai Rail Transit Chongming Line
[Objective] It is to address issues such as stray current corrosion and limited distance for DC traction power supply systems conventionally using rail return in urban rail transit. [Method] After conducting a comparativ...