scholarly journals Technology for reducing the consumption and losses of electrical energy in the power supply systems of railway consumers

2018 ◽  
Vol 239 ◽  
pp. 01033
Author(s):  
Vasily Cheremisin ◽  
Yury Demin ◽  
Alexander Komyakov ◽  
Vladimir Ivanchenko
Keyword(s):  
Influencing Factors ◽  
Power Supply ◽  
Electrical Energy ◽  
Design Solution ◽  
Specific Power ◽  
Railway Transport ◽  
Power Losses ◽  
System Parameters ◽  
Supply Systems ◽  
Efficiency Indicators

The paper is devoted to the development of technology for reducing the consumption and losses of electrical energy of railway transport enterprises on the basis of the concept of “smart enterprise”. A design solution to the monitoring and management system for energy efficiency indicators was proposed; monitored parameters and influencing factors were determined. The application of the simulation model in the MATLAB/Simulink program for determining the set values of the monitored system parameters, namely, power losses and power factor depending on the influencing factors, is considered. The approximating equation is obtained. Specific power losses were calculated for various control options.

scholarly journals SMART GRID TECHNOLOGY, TRANSMISSION OF ELECTRICAL ENERGY IN POWER SUPPLY AND LIGHTING SYSTEMS OF CITIES

2020 ◽  
pp. 10-14
Author(s):  
P. P. Hovorov ◽  
K. V. Hovorova ◽  
А. К. Kindinova ◽  
O. Abdelrahim
Keyword(s):  
Smart Grid ◽  
Power Supply ◽  
Reactive Power ◽  
Mutual Influence ◽  
Electrical Energy ◽  
Operating Efficiency ◽  
Centralized Control ◽  
Power Losses ◽  
Lighting Systems ◽  
Supply Systems

Modern power supply and lighting systems of cities are complex electrical systems of an automated type, in which the processes in individual power supply systems and city lighting systems are interconnected and interdependent. Therefore, the search for efficient technologies for the transmission of electrical energy in them is an extremely difficult task. The real state of the power supply and lighting systems in cities today is characterized by low operating efficiency, largely due to the low quality of electrical energy and insufficient compensation of reactive power in them. The mutual influence of power supply and lighting systems in cities, as well as the presence of significant voltage deviations and the overflow of additional reactive power in the networks, causes an increase in voltage and power losses in them, as well as a decrease in the efficiency of networks and connected consumers, in general. Unfortunately, the existing methods and technical means based on them cannot fully solve this problem. The research carried out made it possible to clarify the nature of the processes in the power supply systems and the sanitation of cities and to determine the methods and technical means based on the Smart Grid concept. They are based on the use of phase-shifting booster transformers with an electronic control system. Their use made it possible to provide the possibility of complex control of the voltage modes of active and reactive power with the possibility of installation at any point in the network and centralized control from a single centre. The calculations show that the use of the developed methods and technical means provides an opportunity to reduce power losses in networks by 10–15% and energy costs for consumers by 50–75%.

scholarly journals Unlike-Pole Inductor Generator with Electrically Integrated Armature and Excitation Windings for the Power Supply Systems of Passenger Cars / RADIĀLAS IEROSMES INDUKTORĢENERATORS AR ELEKTRISKI APVIENOTIEM ENKURA UN IEROSMES TINUMIEM PASAŽIERU VAGONU ELEKTROAPGĀDES SISTĒMAI

2013 ◽  
Vol 50 (3) ◽  
pp. 12-23 ◽  
Author(s):  
N. Levin ◽  
E. Kamolins ◽  
V. Pugachev
Keyword(s):  
Power Supply ◽  
Substantial Improvement ◽  
Specific Power ◽  
Mass Reduction ◽  
Passenger Cars ◽  
Ferrous Metals ◽  
Non Ferrous Metals ◽  
Economic Indices ◽  
The Cost ◽  
Supply Systems

Substantial improvement of the undercar inductor generator used for supplying power to passenger cars is achievable through increasing its specific power, reliability, reparability, and decreasing the cost of its manufacturing. It is proposed to integrate electrically the armature and excitation windings of the generator thus considerably simplifying its design while reducing its mass and consumption of non-ferrous metals. To gain these advantages a test prototypal generator was made and bench-tested. The results of tests show that a 1.5-fold mass reduction is achievable along with good technical-economic indices of the generator.

scholarly journals Evaluation of the possibility of using alternative sources of electrical energy to power auxiliaries of traction substations of power supply divisions on the example of ECHE-20 “Bronevaya”

2021 ◽  
Vol 2021 (4) ◽  
pp. 601-610
Author(s):  
Iliya A. TEREKHIN ◽  
◽  
Alexander Yu. BALAKIN ◽  
Keyword(s):  
Power Supply ◽  
Alternative Energy ◽  
Practical Importance ◽  
Electrical Energy ◽  
Railway Transport ◽  
Alternative Source ◽  
Alternative Energy Source ◽  
Effi Ciency ◽  
Traction Substations ◽  
Alternative Sources

Objective: To assess the possibility of using alternative sources of electrical energy to power auxiliaries of traction substations of power supply divisions on the example of ECHE-20 “Bronevayaˮ. Methods: Alternative energy is used on the railways. Results: Equipment was selected and a solar power plant was designed, economic effi ciency from the introduction of an alternative energy source and its payback period were calculated. Practical importance: The designed alternative source of electrical energy makes it possible to increase the energy effi ciency indicators of production processes of railway transport

scholarly journals Features of operation of wind power stations as an supplementary source of electricity for non-traction consumers of railway electric mains

2019 ◽  
pp. 36-41
Author(s):  
Kachan Yu ◽  
Kuznetsov V
Keyword(s):  
Renewable Energy ◽  
Wind Speed ◽  
Wind Power ◽  
Wind Turbines ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Wind Farms ◽  
Energy Sources ◽  
Railway Transport ◽  
Supply Systems

Purpose. Identify the features of operation of wind farms as an auxiliary supplier of electricity for non-traction consumers of railway networks and analyze the main factors that directly affect the use of wind farms due to the random nature of wind flow and additional factors due to the above conditions in different climates. The research methodology is based on modern methods of computational mathematics, statistics and information analysis using modern computer technology. Findings. The need to use renewable energy sources in the power supply systems of non-traction consumers of railway transport is obvious. Given the constant growth of prices and tariffs for electricity in Ukraine, more and more attention is paid to its savings and the search for the cheapest and most affordable alternative sources. The authors consider issues related to the possibility of using additional generation of electricity in the power supply systems of railway transport through the use of wind turbines, including for non-traction consumers. The analysis of wind flow features in some regions of Ukraine was carried out, and the measurement of wind speed in Zaporizhia and Dnipropetrovsk regions was obtained with the help of a compact wind speed sensor manufactured by Micro-Step-MIS LLC (Russia). The obtained values of wind speed were recorded and stored digitally. The received information of the above device was processed. The authors conclude that in the case of using wind turbines as an additional power source in the networks of non-traction consumers of railway power supply systems it is economically advantageous to connect them directly to these networks and fully use all electricity produced by them, reducing its consumption from this power supply system. The originality is that the use of renewable energy sources in the power supply systems of non-traction consumers of railway transport, in particular wind turbines, is proposed. Practical implications. Introduction of wind power plants as an auxiliary supplier of electricity for non-traction consumers of railway power grids in order to minimize electricity costs. Keywords: renewable energy sources, quality of electric energy, wind power plant, power supply networks of railway transport, non-traction consumers of railway electric networks, electricity production, wind speed.

scholarly journals Experimental wind power and photovoltaic plants as a basis for researching to use renewable energy sources in the power supply systems for non-traction consumers

2019 ◽  
pp. 54-60
Author(s):  
Kachan Yuriy ◽  
Kuznetsov Vitaliy
Keyword(s):  
Renewable Energy ◽  
Wind Power ◽  
Power Supply ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
General View ◽  
Railway Transport ◽  
Photovoltaic Plant ◽  
Photovoltaic Plants ◽  
Supply Systems

Purpose. Describe the tools used by the authors for experimental research on the possibilities of using renewable energy sources in the power supply systems of non-traction consumers of railway transport. The methodology of research is based on modern methods of computational mathematics, statistics and information analysis using modern computer technology. Findings. To date, there is no comprehensive approach and specific reasonable measures for the introduction of re-newable energy sources in the energy supply of non-traction consumers. The article presents examples of the introduction of renewable energy sources in the power supply systems of railways abroad. It is noted that when using different renewable energy sources in the power supply systems of non-traction consumers, it is necessary to have a volume of statistical information to determine their technical and economic indicators. The classification of wind power plants with a horizontal axis is given. The schematic diagram and general view of the developed experimental wind power plant are given. The schematic diagram and general view of the developed experimental photovoltaic plant are given. The equipment used for research of wind flow and intensity of solar radiation in places of possible location of wind power or photovoltaic installations is considered. The presented experimental wind power and photovoltaic plants, which serve for a comprehensive study of the possibilities of using wind and solar sources in the power supply systems of non-traction consumers, are generalized and allow to clarify the necessary data for decision making. The originality is the introduction of renewable energy sources in the power supply system of non-traction consumers of railway transport. Practical implications. The use of additional renewable energy sources to supply non-traction consumers minimizes electricity consumption. Keywords: renewable energy sources, quality of electric energy, wind power plant, photovoltaic plant, power supply networks of railway transport, traction and non-traction consumers, electricity production

Analysis of indicators of electric power efficiency in network of non-tractive power consumers of railway transport

2020 ◽  
pp. 86-90
Author(s):  
Alexey Anatolyevich Kovalev ◽  
◽  
Timur Talgatovich Shayukhov ◽  
Sergey Alexeevich Chebakov ◽  
Alexander Takhirovich Sharapov ◽  
...  
Keyword(s):  
Electric Power ◽  
Power Supply ◽  
Power Efficiency ◽  
Active Filter ◽  
Railway Transport ◽  
Traction Substation ◽  
Supply Systems

The paper considers the analysis of the most important indicators of electric power efficiency in non-tractive power supply systems of railway transport on the example of a specific traction substation feeder. The authors propose variants of solving problems of discrepancy between the indicators and standard requirements. As a result, they discuss the advantages of using the active filter in comparison with other methods of filtering upper harmonics.

scholarly journals Study of Performance of RZhFA‑6500 Smoothing Reactors

2021 ◽  
Vol 18 (4) ◽  
pp. 72-83
Author(s):  
V. V. Lobyntsev ◽  
S. S. Polev ◽  
K. G. Mogilevsky
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Electrical Energy ◽  
Traffic Volume ◽  
Ohmic Resistance ◽  
Train Operation ◽  
New Type ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Traction Power

DC traction power supply systems have become widespread in several countries. Electricity consumption by traction power supply systems has pronounced seasonal and daily peaks. The peak nature of consumption leads to additional heating of live parts since time constants of transient thermal and electrophysical processes differ by several orders of magnitude, therefore, reducing ohmic resistance of electrical equipment, other things being equal, is an extremely important task.Within the framework of solving the problem of increasing energy efficiency of equipment of DC traction substations, smoothing reactor filter devices with an armoured radial-cylindrical magnetic core with low ohmic resistance, named RZhFA‑6500, were developed and manufactured.In 2018, two blocks of RZhFA‑6500 smoothing reactors were put into pilot operation at one of the most heavily loaded sections of DC electrified railways, providing traffic of trains weighing up to 9000 tons and traffic volume of about a hundred pairs of trains per day.To determine comparative indicators of energy efficiency, data on consumption of electric power for traction of trains for the compared periods before and after introduction of smoothing reactors of a new type were requested. The data received from JSC Russian Railways contained information on the traffic volume, type of rolling stock, and weight of the transported goods in accordance with the executed traffic schedule through section under consideration. The resulting set of data served as the basis for development of a multivariate methodology for assessing energy efficiency of reactors of a new type, as well as their contribution to efficiency of train operation over the considered comparative time interval. Since efficiency of power equipment also depends on the ambient temperature, the average integral parameter of average daily temperature was introduced into the calculation methodology, which, as it turned out, during processing initial data and construction of characteristic graphical dependencies, has a comparative difference of less than one percent for the same monitored periods.Accurate quantitative accounting of the data on consumption of electrical energy provided for traction of trains, exchange of reactive energy with the supply network, volume of transportation allowed to obtain an objective comparison of contribution of smoothing reactors of a new type to increasing efficiency of train operation and reducing consumption of electrical energy for traction of trains.

Sign in / Sign up

Export Citation Format

Share Document