Analysis of Train Operation Efficiency of Urban Rail Transit Based on Train-to-train Communication Train Control System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 3
Abstract
[Objective] The T2T (train to train) communication train control system in urban rail transit is a new type of signal system, and it manages and controls trackside equipment through resource management. To verify the superiority of the system, it is necessary to analyze the train operation efficiency under this system. [Method] In view of the characteristics of the resource management and safety protection principles for T2T train control system, the originally interlocking controlled double action switch is transformed into two single action switches, and ATP (automatic train protection) is achieved based on train precise self-positioning under reversal working conditions. The utilization capacity of line resources in the turnout area is improved. Under tracking conditions in line sections and stations, the train tracking interval is further reduced by utilizing the principle of relative speed safety protection and by inter-transmitting the real-time information of speed, acceleration, and position between the front and rear trains. Through the technological innovation in the above two aspects and based on the actual data from urban rail transit lines, operation scenarios such as reversal on scissors crossover behind the station, reversal on single crossover in front of the station, tracking in line sections and stations are simulated and calculated. The capacity of the T2T train control system in train reversal and line section tracking is determined. [Result & Conclusion] Compared to the traditional CBTC (communication-based train control system), the T2T has significant improvement in reversal and tracking capacity and other aspects, which enables it to be more suitable for urban rail transit lines with super large traffic volume. The T2T train control system is also particularly suitable for urban rail transit renovation projects as it has a simple architecture and requires less trackside equipment.
Authors and Affiliations
Zhixiang DENG, Cheng WANG, Jun XU, Xi JIANG
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...
Variable-position System for Balises in Automated Vehicle Depot
Objective The restriction and impact of balises in the maintenance trench of automated vehicle depots on vehicle maintenance grow increasingly prominent. Therefore, it is necessary to conduct a research on the variable-p...
Constitutive Model and Experimental Study of Stud Steel-Shotcrete Interface Bond-Slip in Mining Method Tunnel Initial Support
Objective It is aimed to elucidate the constitutive relationship of bond-slip at the interface between stud steel and shotcrete in the initial support of mining method tunnel. Method Four different working conditions are...
Research on Measurement Method of Wheel-rail Vertical Force of Urban Rail Transit
[Objective] A large number of tunnel diseases usually occur during the operation of urban rail transit, and the main cause of the diseases is the wheel-rail force. Therefore, it is necessary to study the method of measur...
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...