scholarly journals Application of the recurrent mathematical model for estimating the electric-traction NetWare parameters at their dynamic change

2021 ◽  
Vol 2131 (4) ◽  
pp. 042071
Author(s):  
A A Kapkayev
Keyword(s):  
Control Systems ◽  
Dynamic Change ◽  
Rolling Stock ◽  
Successive Approximations ◽  
Design Stage ◽  
Electric Rolling Stock ◽  
Traction Power Supply ◽  
Electric Traction ◽  
And Control ◽  
Traction Power

Abstract The article is devoted to the possibility of applying the methods of successive approximations in the analysis of the instantaneous scheme of the electric-traction netware. The described approach makes it possible to improve the accuracy of modeling the dynamic modes of traction power supply sections operation, and also makes it possible to significantly improve the process of modeling diagnostic and control systems for electric rolling stock at the design stage, based on a more accurate model of dynamically changing input parameters of the electric-traction netware, depending on their required level.

scholarly journals Improvement of the regenerating energy accounting system on the direct current railways

2015 ◽  
Vol 36 (4) ◽  
pp. 35-42 ◽  
Author(s):  
Valeriy G. Kuznetsov ◽  
Oleg I. Sablin ◽  
Alenka V. Chornaya
Keyword(s):  
Power Supply ◽  
Practical Importance ◽  
Rolling Stock ◽  
Accounting System ◽  
Quantitative Indices ◽  
Energy Accounting ◽  
Traction Power Supply ◽  
Electric Traction ◽  
Regenerative Energy ◽  
Traction Power

Purpose. Monitoring of current state of quantitative indices of regenerative energy in the suburban movement, the analysis of the factors influencing its volumes and improvement the principles of the train regenerative energy accounting on the basis of it. Relevance. Development of effective measures of increase the regeneration efficiency of the electric power in system of electric traction demands comprehensive completeness of information on quantitative indices of regeneration energy volumes at all possible levels of its analysis, in particular on the corresponding sections of RS movement that will allow to establish the influence on the level of regeneration of various factors, such as parameters of traction power supply and the organization of train service. As the existing system of the regenerative energy accounting does not allow to consider the specified factors, development of the principles for increasing the efficiency of the analysis of volumes of return energy to a contact line during regenerative braking on DC rolling stock is the actual direction of researches. Collective monitoring of regeneration energy volumes by specialists of locomotive service, power supply and traffic operating departments will be essentially new approach to definition of real factors and taking effective decisions for increasing of using of regenerative energy. Scientific novelty. It’s offered to consider the influence on quantitative indices of regenerative energy the parameters of traction power supply and the organization (sizes) of traffic service on sections. Practical importance. Increasing the efficiency of the regeneration energy accounting is an important element in drawing up the balance of energy for electric traction system, development of the effective methods for improvement of the conditions of regeneration in it and in estimation of its power indicators in general.

Modes of Traction Power Supply System in Case of Electric Rolling Stock Equipped with Energy Storage

2014 ◽  
Vol 698 ◽  
pp. 19-23
Author(s):  
Egor Spiridonov ◽  
Nikolai Shchurov ◽  
Artem Larin
Keyword(s):  
Energy Storage ◽  
Power Supply ◽  
Power Supply System ◽  
Electric Energy ◽  
Supply System ◽  
Rolling Stock ◽  
Electric Rolling Stock ◽  
Traction Power Supply System ◽  
Traction Power Supply ◽  
Traction Power

Modes of traction power supply system in case of electric vehicle equipped with energy storage are considered in the paper. It is shown that the application of energy storage for limiting the rolling stock current does not only allow utilizing electric energy more efficiently but also reduces energy loses in traction power supply system.

scholarly journals Electric power accumulators in system of supplying railways with traction energy by direct current

2018 ◽  
Vol 239 ◽  
pp. 01057
Author(s):  
Ilya Rebrov ◽  
Maksim Shevlyugin ◽  
Alexandr Kotelnikov ◽  
Dmitry Ermolenko
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
Rolling Stock ◽  
Railway Transport ◽  
Quality Factors ◽  
Traction Network ◽  
Traction Power Supply ◽  
Electric Traction ◽  
Traction Power

The article describes core criteria, which define efficient application of energy accumulators in railway traction power supply system. Installation points for energy accumulators in electric power system of train electric drivers, where application is most effective, are identified. These points are railway sub-stations, electric traction network and traction power system. The main types of energy accumulators, which essentially can be used on railway transport in traction power system – traction sub-stations and traction network, electric motive power, are examined. They can be used on railway transport and. The quality factors of work for traction energy power and electric motive power are presented, improvement of which can be performed using energy accumulators. International experience of energy accumulators application for railway transport is presented. Russian developments and implementation of energy accumulators from domestic manufacturers are examined, both in the traction power system and in the electric rolling stock. The polygons for the most efficient use of energy storage in the traction power supplying system are identified.

scholarly journals Concept of intelligent system for controlling regenerative braking and using recovery energy

2018 ◽  
Vol 239 ◽  
pp. 01039
Author(s):  
Alexander Vilgelm ◽  
Mikhail Nikiforov ◽  
Vasily Cheremisin
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Intelligent System ◽  
Electrical Energy ◽  
Rolling Stock ◽  
Regenerative Braking ◽  
Managerial Decisions ◽  
Electric Rolling Stock ◽  
Traction Power Supply ◽  
Traction Power

The issue of increasing the level of electrical energy recovered by the electric rolling stock and the efficiency of its use at the electrified sections of railways of JSC “Russian Railways” is still topical at present. This issue is considered today in the context of increasing the efficiency of the use of traction rolling stock. Increasing the energy efficiency of the transportation process by increasing the efficiency of recovery can be achieved both by the implementation of organizational decisions and through the introduction of additional equipment in the traction power supply system, for example, installation of reversible converters at traction substations or power storage devices on electric rolling stock and in the system of traction power supply, as well as other technical means, changing the parameters of the operation of sections with mandatory provision of the operability of the regenerative braking systems in the electric rolling stock. To assist in the reasoned adoption of similar and other managerial decisions, it is advisable to create an intelligent system for controlling the processes of applying regenerative braking and using recovery energy. This paper briefly reviews the main results of scientific research on the efficiency of recovery, suggests a mechanism for adapting the methods developed earlier to the system for controlling energy efficiency of recovery processes at the sections of railways.

scholarly journals Development of Russian Driverless Electric Vehicle

2018 ◽  
Vol 7 (3) ◽  
pp. 233
Author(s):  
Andrey Mikhailovich Saykin ◽  
Sergey Evgenievich Buznikov ◽  
Denis Vladimirovich Endachev ◽  
Kirill Evgenievich Karpukhin ◽  
Alexey Stanislavovich Terenchenko
Keyword(s):  
Control Systems ◽  
Electric Vehicle ◽  
Energy Efficient ◽  
Environmental Safety ◽  
Foreign Experience ◽  
History Of Development ◽  
The World ◽  
History Of ◽  
Electric Traction ◽  
And Control

<p>This article overviews the history of development of driverless vehicles both in Russia and the World. Foreign experience of development of driverless vehicles, including electric traction, is analyzed. Main stages of creation of experimental NAMI driverless electric vehicle are revised. Main engineering solutions are described concerning development of advanced NAMI driverless electric vehicle, its major components and control systems. Projects aimed at environmental safety of passengers in NAMI driverless electric vehicle are exemplified. Results of bench scale and running tests of NAMI driverless electric vehicle are summarized. Major advantages of driverless energy efficient and environmentally clean transport are demonstrated.</p>

scholarly journals Mathematical model of traction vehicle movement

2019 ◽  
Vol 1 (1) ◽  
pp. 37-42
Author(s):  
Konrad Krzysztoszek
Keyword(s):  
Mathematical Model ◽  
Power Supply ◽  
Railway Line ◽  
Traction Power Supply System ◽  
Current Voltage ◽  
Traction Power Supply ◽  
Electric Traction ◽  
Basic Features ◽  
Vehicle Movement ◽  
Traction Power

The article presents a mathematical model of electric traction vehicle movement in a given power supply area. Starting from the presentation of the basic features of the 3 kV DC traction power supply system used in Poland, the author presents a simulation model of electric traction vehicles movement, which allows to determine the mobility and current - voltage possibilities on a selected railway line. The obtained simulation results fully confirm the possibility of using the model as an aid in the design, modernization or diagnostics of existing railway lines and train traffic.

INVESTIGATION OF THE CURRENT TRANSFORMER CONTROL SYSTEM WITH AUTOMATIC RANGE CONTROL

2021 ◽  
Vol 4 (1) ◽  
pp. 4-12
Author(s):  
Sultan Amirov ◽  
◽  
Shavkat Mukhsimov
Keyword(s):  
Control System ◽  
Control Systems ◽  
Power Supply ◽  
Power Source ◽  
Current Transformer ◽  
Measurement Range ◽  
Current Transformers ◽  
Traction Power Supply ◽  
A Current ◽  
Traction Power

The article examines the control system of a current transformer with automatic range control. All multi-limit current transformers allow measuring currents of different ranges with sufficient accuracy in the control systems of traction power supply devices. However, a common disadvantage for all of them is that if it is necessary to change the measurement range, the controlled current of the traction power supply device is disconnected from the power source, i.e. the production or technological process is forced to stop and dismantling and installation work is required. The proposed current transformer with automatic range control eliminates these disadvantages.Keywords:Current transformer, microcontroller, filter, control system, SSR relay, automatic system, harmonic

scholarly journals Electrodynamics of Reactive Power in the Space of Inter-Substation Zones of AC Electrified Railway Line

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3510
Author(s):  
Mykola Kostin ◽  
Anatolii Nikitenko ◽  
Tetiana Mishchenko ◽  
Lyudmila Shumikhina
Keyword(s):  
Electromagnetic Fields ◽  
Electromagnetic Waves ◽  
Reactive Power ◽  
The Body ◽  
Rolling Stock ◽  
Electric Locomotive ◽  
Railway Line ◽  
Frontal Part ◽  
Electric Rolling Stock ◽  
Electric Traction

In railway traction, the definition of “electromagnetic field” is functionally connected to the concept of the reactive power consumed by the electric rolling stock, and characterized by the running and standing electromagnetic waves in the space of the inter-substation zones from the site of the AC traction system. Such a definition is established and theoretically justified by the theory of electromagnetic fields. This article uses the methodology of this theory, in particular, a method for power balance estimation in electromagnetic fields based on Maxwell’s equations, as well as methods for the analysis of running and standing electromagnetic waves based on the theory of reflection, propagation and transmission of plane harmonic waves. The research considers the regularities of standing electromagnetic waves in the space of inter-substation zones of electric traction systems, which occur due to the incomplete reflection of incident waves from the contact wire and metal parts of the roof surface and the frontal part of the body of the electric rolling stock. The flow of electricity to the roof surface and the frontal part of the body of an electric locomotive is considered. The possibility of using existing methods to reduce wave reflections and thereby to effectively compensate for reactive power in the space of inter-substation zones is discussed.

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