scholarly journals Reducing Power Losses by Voltage Stabilization at the DC Rolling Stock Current Collector

2021 ◽  
Vol 60 (3) ◽  
pp. 103-111
Author(s):  
Dmitry Tugay ◽  
Alina Trotsai ◽  
Olexandr Shkurpela ◽  
Ivan Kostenko
Keyword(s):  
Reducing Power ◽  
Current Collector ◽  
Energy Performance ◽  
Voltage Regulation ◽  
Rolling Stock ◽  
Contact Network ◽  
Voltage Stabilization ◽  
Electric Rolling Stock ◽  
Nominal Voltage ◽  
Traction Substations

The invention relates to an energy-efficient method for voltage stabilization at the electric rolling stock current collector through traction substation control means which provide a nominal voltage value during the electric train movement by an interstation section. The dependence of potential distribution in the contact wire during the electric rolling stock movement by an interstation section was investigated. Also researched and developed are the new ways of voltage stabilization at the current collector of the electric rolling stock based on synchronous (the same for two adjacent traction substations) and asynchronous paths of voltage regulation at DC buses of traction substations related to one synchronous and two asynchronous ways of voltage stabilization in the contact network with obtaining the energy performance describing them. The energy performance of the investigated methods of voltage stabilization in the contact network is compared, and the energy efficiency of each of them is determined. It is proved that the use of modern types of semiconductor converters such as an active rectifier – voltage source in the power equipment of DC traction substations will enable to implement adaptive voltage stabilization systems at the rolling stock current collector, providing nominal voltage values of traction motors on the interstation section without using additional equipment on the rolling stock and, as a consequence, justification and application of these methods is suitable for upgrading the existing and designing new traction substations.

scholarly journals Locomotive operation mode - the basis for developing the requirements for the energy storage device on railway transport

2018 ◽  
Vol 239 ◽  
pp. 01004
Author(s):  
Andrey Shatokhin ◽  
Alexandr Galkin
Keyword(s):  
Energy Storage ◽  
Direct Current ◽  
Electric Energy ◽  
Rolling Stock ◽  
Storage Device ◽  
Contact Network ◽  
Energy Storage Device ◽  
Electric Energy Storage ◽  
Operation Modes ◽  
Electric Rolling Stock

Increasing the efficiency of cargo transportation by rail is not only one of the main directions of the company JSC “Russian Railways” but also one of the main tasks of our country in order to achieve sustainable economic growth. Electric rolling stock is the largest consumer of electric energy in the company, that’s why its effective and failure-free operation is the way to solve the set tasks. The paper deals with studies related to the operation modes of a freight electric rolling stock of direct current for the purpose of determining the requirements for electric energy storage device, since it is the electric rolling stock that determines the daily schedule of electric load. The order of the analysis of experimental trips of freight electric locomotives of a direct current on the basis of cartridges of recorders of traffic parameters installed on the locomotive is determined. On the basis of the analysis of conducted trips, the main requirements for the energy storage device were obtained with a single running of electric DC rolling stock, namely the average duration of the operation modes of the electric locomotive, the maximum, minimum, and average values of voltage and current, the average value of the electric energy returned to the contact network, time of charge/discharge, and the useful energy intensity of the electric energy storage device. The studies were carried out with the support of the Russian Foundation for Basic Research for the project No 17-20-01148 ofi_m_RZD/17.

scholarly journals ASSESSMENT OF THE RELIABILITY OF CURRENT COLLECTORS FOR HIGH-SPEED TRAFFIC

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Oleksandr Krasheninin ◽  
I. V. Brunskuyy ◽  
M. M. Pupiyy
Keyword(s):  
High Speed ◽  
High Reliability ◽  
Rolling Stock ◽  
Contact Network ◽  
Current Collection ◽  
Continuous Quality ◽  
High Speeds ◽  
Network Interaction ◽  
Electric Rolling Stock ◽  
Modern Rolling

Modern rolling stock must have high reliability, as it provides high-speed movement of goods andpassengers. This applies to all its constituent parts, components and assemblies, particularly those thatprovide traffic and security are the foundation of the locomotive as a whole. Since from here it is necessaryto assess the reliability of mathematical responsible units of electric rolling stock and, in particular, currentcollectors.The stability of the current collection at railway roads depends on many factors, including thecharacteristics of the pantograph and contact network. Interaction pantograph suspension and contact is acomplex process, especially at high speeds. To ensure continuous quality current collection and Currentcontact network must have high reliability.In case of refusal trolley stops rolling stock supply electricity. This can lead to temporary, economicor material costs. To avoid this, specify resource pantograph and yohoskladovyh.

Assessment of performance reliability of transformers

Innotrans ◽  
2020 ◽  
pp. 50-53
Author(s):  
Alexander V. Okunev ◽  
◽  
Anastasia A. Ivanova ◽  
Alexander A. Philipiev ◽  
◽  
...  
Keyword(s):  
Calculation Model ◽  
Rolling Stock ◽  
Equipment Failure ◽  
Voltage Level ◽  
Traction Substation ◽  
Freight Traffic ◽  
Electric Rolling Stock ◽  
Traction Substations ◽  
Electrical Apparatus

Increase of freight traffic resulted in increased loads on traction substations and, respectively, in increase of their equipment failure risks. In the context of maintaining the required voltage level and power quality, which determine appropriate values in reliability for traction substation transformers, the article looks upon solving the problem of determination of reliability essential parameters. A proposed calculation model makes it possible to simplify the choice of electrical apparatus for uninterrupted power supply of electric rolling stock traction.

scholarly journals Improvement of the method of calculation of the parameters of the universal current collector with the increased motion speeds

2018 ◽  
Vol 239 ◽  
pp. 01040
Author(s):  
Alexander Smerdin ◽  
Yury Demin ◽  
Alexander Ryzhkov
Keyword(s):  
Computer Model ◽  
Current Collector ◽  
Original Description ◽  
Rolling Stock ◽  
Kinematic Scheme ◽  
Current Collectors ◽  
Method Of Calculation ◽  
Electric Rolling Stock ◽  
Wide Range ◽  
Universal Instrument

The paper considers the main stages of development of a computer model of current collectors of an electric rolling stock. The original description of the kinematic scheme of a universal measuring current collector with the subsequent implementation of mathematical model in Matlab SimMechanics environment is offered. The model is based on the use of the method of homogeneous coordinates to represent the kinematic scheme of the current collector. It is shown that the computer model accurately and adequately describes the processes occurring with the current collector, is a universal instrument for simulating any types of current collectors, allows changing a wide range of parameters and characteristics incorporated in it.

Simulation of an ac electric locomotive operation in the regenerative braking mode

2021 ◽  
pp. 106-114
Author(s):  
V. S. Tomilov ◽  
Keyword(s):  
Mathematical Modeling ◽  
Energy Savings ◽  
Rolling Stock ◽  
Regenerative Braking ◽  
Contact Network ◽  
Electric Motors ◽  
Electric Locomotive ◽  
Power Circuit ◽  
Electric Rolling Stock ◽  
Train Speed

Regenerative braking is one of the most important energy-saving resources on electric rolling stock (EPS) of railways and feasibility of its use is confirmed by a rich half-century history. The development of the recovery mode begins with the release of the experimental AC electric locomotive of the VL61 series № 012 and continues with the release of the modern series of electric locomotives 2 (3, 4) ES5K and EP1v/i. The use of recuperation allows you to achieve significant energy savings, to ensure the safety of driving heavy trains on the track profile with long descents. In the regenerative braking mode, the EPS has rigid braking characteristics, ensuring maintenance of constant train speed, increasing the technical speed of the train and capacity of the railway section. This article presents the results of mathematical modeling of operation of an AC electric locomotive in the regenerative braking mode using a standard rectifier-inverter converter (RIC) and presence of ballast resistor blocks (BRB) in the power circuit, and using a promising RIC based on IGBT transistors, for which a method for implementing regenerative braking on AC electric locomotives without the use of BRB in the anchor circuit of traction electric motors is developed, with the help of which it is possible to increase the amount of electricity given to the contact network, as well as to expand the area of braking characteristics of the electric locomotive.

Automatic Voltage Stabilization of an Electric Rolling Stock Catenary System

2021 ◽  
Vol 92 (4) ◽  
pp. 213-216
Author(s):  
T. P. Satsyuk ◽  
V. A. Sharyakov ◽  
O. L. Sharyakova ◽  
D. A. Kovalev ◽  
A. A. Vorob’ev ◽  
...  
Keyword(s):  
Rolling Stock ◽  
Voltage Stabilization ◽  
Electric Rolling Stock ◽  
Catenary System

scholarly journals Damped vibrations method for measuring the rigidity of a system of movable frames of a current collector on the roof of an electric locomotive

2020 ◽  
Vol 217 ◽  
pp. 03001
Author(s):  
Alexander Smerdin ◽  
Anton Golubkov ◽  
Oleg Sidorov ◽  
Anatoly Slatin
Keyword(s):  
Human Factor ◽  
Mechanical Characteristics ◽  
Current Collector ◽  
Rolling Stock ◽  
Electric Locomotive ◽  
Mechanical Vibrations ◽  
Current Collectors ◽  
Electric Rolling Stock ◽  
A Current

The paper describes the features of using the method of damped mechanical vibrations for express diagnostics of current collectors without removing from electric rolling stock roof. The proposed method is based on preliminary determination of the mechanical characteristics of the system of movable frames of a serviceable current collector in the factory. The paper describes a technique that can significantly reduce the complexity of conducting this type of research, increase the speed of measurement, and reduce the influence of the human factor.

scholarly journals Erratum to: Automatic Voltage Stabilization of an Electric Rolling Stock Catenary System

2021 ◽  
Vol 92 (6) ◽  
pp. 349-349
Author(s):  
T. P. Satsuk ◽  
V. A. Sharyakov ◽  
O. L. Sharyakova ◽  
D. A. Kovalev ◽  
A. A. Vorob’ev ◽  
...  
Keyword(s):  
Rolling Stock ◽  
Voltage Stabilization ◽  
Electric Rolling Stock ◽  
Catenary System

scholarly journals Effect of transient processes on the switching stability of dc machines

2018 ◽  
Vol 239 ◽  
pp. 01036 ◽  
Author(s):  
Viktor Kharlamov ◽  
Pavel Shkodun ◽  
Andrey Ognevsky
Keyword(s):  
Magnetic System ◽  
Significant Proportion ◽  
Electrical Energy ◽  
Operating Conditions ◽  
Fine Tuning ◽  
Transient Processes ◽  
Rolling Stock ◽  
Electric Motors ◽  
Electric Rolling Stock ◽  
Switching Stability

Effective use of fuel and energy resources is one of the main tasks in modern industry and transport. The main directions of increasing the energy efficiency of the electric rolling stock of railways are considered in the paper. For the electric rolling stock of railways, a significant proportion of electric power consumption falls on traction needs. The consumption of electrical energy and its recovery directly depends on the proper operation and fine-tuning of the magnetic system and switching of traction electric motors of the rolling stock. The methods of testing traction electric motors currently used in railway transport do not fully correspond to their operating modes during operation. For more reliable control of their condition, a methodology for estimating the nature of the operation of traction electric motors in conditions close to real ones was proposed. Studies of the influence of transient processes on the quality of switching of traction electric motors taking into account operating conditions are carried out. Based on the results of the study, the analysis of the data obtained is carried out, and a criterion for estimating the switching stability of traction electric motors in transient operation modes is proposed. The proposed criterion allows carrying out quality control of the tuning of the magnetic system and switching of the traction electric motor, and also estimating the nature of its operation in various modes, taking into account the operating conditions.

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