Analysis and Solution about Overvoltage of Automatically Passing Neutral Section System

2012 ◽  
Vol 562-564 ◽  
pp. 1248-1251 ◽  
Author(s):  
Ran Wang ◽  
Trillion Q. Zheng ◽  
Hao Yu Ma
Keyword(s):  
Control System ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Electric Locomotive ◽  
Safe Operation ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction Power ◽  
Neutral Section

Over-voltages happen when electric locomotive passes the neutral section, which has serious influence on safe operation of the traction power supply system. This paper builds the model of contact net and neutral section of traction power line and analyzes transient process of the electric locomotive passing the neutral section. This paper proposes automatic control system for electric locomotive passing neutral section. It is effective to avoid the over-voltages.

The eff ect of time reducing of train-to-train margin on the technical and energy indicators of the system of traction unregulated and regulated power supply

Innotrans ◽  
2020 ◽  
pp. 51-55
Author(s):  
Irina A. Baeva ◽  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Electric Energy ◽  
Voltage Control ◽  
Supply System ◽  
Electric Locomotive ◽  
Voltage Level ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction Power

The article considers the effect of reducing the time of train-to-train margin on the specific consumption of electric energy and the voltage level on the currentcollecting gear of an electric locomotive. Simulation of the operation of the DC 3.0 kV traction power supply system is carried out in the KORTES software package. The section of the Sverdlovsk railway with an operating system of contactless automatic voltage control was taken for the study. The article defines the rational time of the train-to-train margin for an unregulated and regulated system of traction power supply. The energy efficiency of the system of contactless automatic voltage control was evaluated.

Increase of energy efficiency of traction power supply system by application of voltage regulating devices

2021 ◽  
pp. 78-85
Author(s):  
Irina Anatolyevna Baeva ◽  
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Power Supply System ◽  
Current Collector ◽  
Supply System ◽  
Electric Locomotive ◽  
Traction Power Supply System ◽  
Traction Substations ◽  
Traction Power Supply ◽  
Traction Power

Increase of energy efficiency of a traction power supply system in condition of growth of goods turnover becomes a very actual task. The paper considers energy efficiency of both the existing traction power supply system without current regulating devices and the traction power supply system with the use of such devices. The author has determined the influence of increase of speed from 50 to 100 km/h on power consumption on traction including on power consumption according counters of electric locomotives and losses of power in the catenary. Also as a variant of strengthening the paper considers a buffer traction power supply system consisting of main regulated traction substations and a not regulated single-unit traction substation in the middle of inter-substation zone. This system is used in situation when regulation of voltage on main traction substations doesn’t provide the increase of traffic and carrier capacity of sections (directions). Modeling of operation of the traction power supply system has been carried out on a section of the Sverdlovsk Railway. All the calculations have been executed for the batch of freight trains with the mass of 7100 tons. In calculations the author has applied a new clarifying method that includes the use of corrective current coefficients and the assessment of voltage level on an electric locomotive current collector. The energy efficiency of the traction power supply system has been assessed by such indicators as a level of voltage on the electric locomotive current collector, power losses in catenary and transformers of traction substations.

scholarly journals Power Flow Analysis of the Advanced Co-Phase Traction Power Supply System

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 754 ◽  
Author(s):  
Xiaoqiong He ◽  
Haijun Ren ◽  
Jingying Lin ◽  
Pengcheng Han ◽  
Yi Wang ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Flow ◽  
Power Supply System ◽  
Flow Analysis ◽  
Supply System ◽  
Stable Operation ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction Power ◽  
Neutral Section

The development of the traction power supply system (TPSS) is limited by the existence of the neutral section in the present system. The advanced co-phase traction power supply system (ACTPSS) can reduce the neutral section completely and becomes an important research and development direction of the railway. To ensure the stable operation of ACTPSS, it is necessary to carry out an appropriate power analysis. In this paper, the topology of advanced co-phase traction substation is mainly composed by the three-phase to single-phase cascaded converter. Then, the improved PQ decomposition algorithm is proposed to analyze the power flow. The impedance model of the traction network is calculated and established. The power flow analysis and calculation of the ACTPSS with different locations of locomotive are carried out, which theoretically illustrates that the system can maintain stable operation under various working conditions. The feasibility and operation stability of the ACTPSS are verified by the simulations and low power experiments.

scholarly journals Design and Health Evaluation of Monitoring Test Platform for Metro Traction Power Supply System

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Hengchao Zheng ◽  
Yuhua Wang
Keyword(s):  
Health Status ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Normal Operation ◽  
Safe Operation ◽  
Traction Power Supply System ◽  
Test Platform ◽  
Traction Power Supply ◽  
Traction Power

Subway traction power supply system is the energy source of subway operation. The normal operation of subway traction power supply system is directly related to the stable operation and safety of subway. If the subway traction power supply system breaks down, it not only will cause economic losses, but also may cause social disorder. Therefore, it is of great significance to study the traction power supply system of subway to ensure the safe operation of subway. The establishment of a reasonable monitoring and testing platform, the simulation analysis of the traction power supply system, and the regular health assessment can provide a strong guarantee for the safe operation of the subway. This paper aims to design a practical test platform through MATLAB modeling, so as to establish a simulation model of subway traction power supply system, and comprehensively monitor and grasp the health status of subway traction power supply system. This paper quantitatively evaluates the health status of subway traction power supply system, applies the principle of multilayer immunity, establishes the traction power supply system of analytic hierarchy process (AHP), and constructs the immune monitoring system of each layer. This method can provide the health status information of subway traction power supply system, subsystems, and components comprehensively, accurately, and intuitively and determine the subsystems and components that need to be maintained.

Case Studies of Recent Lightning Troubles in Traction Power Supply System

2013 ◽  
Vol 133 (12) ◽  
pp. 961-966
Author(s):  
Hitoshi Hayashiya ◽  
Kazushi Matsuura ◽  
Norio Koguchi ◽  
Hiroshi Yamamoto ◽  
Tetsuo Fujita
Keyword(s):  
Case Studies ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction Power
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