scholarly journals Aspect of load variability in determining power losses in the DC electric traction power supply system

2018 ◽  
Vol 19 (12) ◽  
pp. 831-834
Author(s):  
Jerzy Wojciechowski
Keyword(s):  
Power Systems ◽  
Power Supply System ◽  
Power Losses ◽  
Traction Power Supply System ◽  
Traction Substations ◽  
Traction Power Supply ◽  
Electric Traction ◽  
Power And Energy ◽  
Traction Load ◽  
Traction Power

The article discusses issues related to the variability of traction load and its impact on power losses in DC traction substations. Presented is the method of determining the influence of current averaging, which often happens in traction calculations. It has been shown that the averaging of the current has a significant impact on the inaccuracy of calculations or measurements of power and energy in DC traction power systems. The issues of variability of traction load are presented.

scholarly journals Methodology for selecting installation sites for automatic power redundancy systems of DC traction substations

2021 ◽  
pp. 63-66
Author(s):  
A. L. Kashtanov ◽  
◽  
Yu. V. Plotnikov ◽  
Keyword(s):  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Energy Effect ◽  
Traction Power Supply System ◽  
Traction Substations ◽  
Traction Power Supply ◽  
Efficiency And Reliability ◽  
Traction Power

The paper presents a method for selecting the installation locations of power reservation systems of traction substations to reduce electricity losses in the system of traction power supply of DC railways. The analysis of the main criteria affecting the efficiency and reliability of the DC traction power supply system is carried out. The algorithm for selecting the installation locations of power reservation systems has been developed, which allows selecting traction substations that provide the greatest energy effect during the installation of systems

scholarly journals Increase of energy efficiency of electric power distribution networks by adjustment of reactive energy consumption in a traction network

2018 ◽  
Vol 239 ◽  
pp. 01049 ◽  
Author(s):  
Natalia Shurova ◽  
Valerii Li
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Power Supply System ◽  
Supply System ◽  
Traction Power Supply System ◽  
Traction Network ◽  
Traction Substations ◽  
Compensating Devices ◽  
Traction Power Supply ◽  
Traction Power

In the past few years, there has been a trend towards an increase in the volume of transportation by railway. At the same time, the load on the railway infrastructure increases, in particular, on the traction power supply system. It is necessary to solve the problem of increasing the energy efficiency of the external electric power supply system in the conditions of growing freight turnover and taking into account the uncertainty of the initial data. The paper considers one of the methods of strengthening the traction power supply system. Based on the results of the study, an algorithm was developed for selecting the installation sites and power of compensating devices in a traction network in the conditions of increasing freight turnover and under the condition of increasing the energy efficiency of the external power supply system of traction substations due to unloading of supply lines by reactive power and leveling the load in phases. This methodology includes predicting power consumption, determining the installation sites and power of compensating devices in the traction network under condition of uncertainty of the initial data, and then assessing the energy efficiency of the decision made. A calculation was carried out for the proposed algorithm for a section of the Far Eastern Railway which includes nine traction substations.

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 Interaction between a DC Traction System and an AC Power System Through Earth-return Circuits

2020 ◽  
Vol 64 (186) ◽  
pp. 111-118
Author(s):  
Włodzimierz Kruczek
Keyword(s):  
Power Systems ◽  
Power Supply System ◽  
Field Tests ◽  
Railway Transportation ◽  
The Earth ◽  
Ac Power ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction System ◽  
Traction Power

The article describes a problem that occurs in electrified railway transportation, involving the interaction between the earth-return circuits of different power systems. One of the analysed circuits is the earth-return circuit of a high-voltage power grid, the other is the return path of a 3 kV DC traction power supply system. The paper presents the results of the field tests carried out so far and discusses a mathematical model developed in the Matlab-Simulink environment with the aim of determining the interaction between both of the said systems. Keywords: earthing, traction substation, traction return system

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
Sign in / Sign up

Export Citation Format

Share Document