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Currently, much attention is paid to the creation of terminal «dry port» for maintenance of traffic node. «Dry port» is one of the possible ways to increase capacity of the transport node. The capacity of transport node depends on the following interrelated elements: infrastructure solutions, technological, technical, organizational, and exogenous. Insufficiency of technical equipment, low level of production culture, informational inconsistency - lead to excessive downtime of vehicles at berths and terminal and warehouse facilities of the port. Technical devices, shunting locomotives, lifting and transport equipment cannot cope with the increasing flow of transportation of containers and cargo, leading to paralysis of the movement of freight flows. The result is the accumulation of cars at the entrances to the transportation hub the formation of «abandoned» trains. The lack of logistics management principles of traffic promotion in the organization of multimodal transport required a modern approach to organization of effective work of the transport node. In this work the effective interaction between various types of transport in the transport node is represented in the form of a set-theoretic model. Considered the elements that contribute to the throughput of dry ports and sea port. The efficiency of technological processes systems of interaction of railway and marine transport in the node depends on the following conditions: the actual time of wagons in transportation must comply with regulatory process time; organization supply wagons in accordance with the processing capabilities of the cargo platforms; ensuring the maximum amount of overload of goods on the «direct option». To implement these conditions it is necessary to organize the interaction of different modes of transport in the transport node together with the terminal «dry port» in the system «terminal - station - port», in which the capacity of the railway component of the transport node is treated comprehensively along with the «dry port». Further technical and technological development of transport nodes is organization of cargo handling outside the port terminal «dry port».

The article considers the task of controlling the quality of work transport hub taking into account the performance given by stochastically independent Poisson counter and quasiresonance traffic flows. The problem is solved with the use of analytical and mathematical apparatus of Queuing theory. The results obtained in the article are supposed to be used to determine the forecast of the total free capacity of vehicles waiting for loading, the queue length of loaded vehicles (trains) in anticipation of unloading, the coefficient of use of useful volumes of warehouse complexes.

The article presents the results of research of a point magneto-induction sensor based on a mathematical model, which allows you to increase the reliability of automated systems for diagnosing technical condition rolling stock in the course of train movement by improvement the accuracy of the initial information, that is, the moments of fixation passing of wheelset axles over magneto-induction sensors. At the first stage of developing a stigmatic mathematical model the analytical dependence of the value of the magnetic flux in the magnetic core and the output EMF value on resistance of the air gap between the sensor and the wheel crest. At the second stage of development of the mathematical model found time dependence of the magnetic resistance of the air gap between the core of the magneto-induction sensor and the comb wheels of a railway car moving along a straight track at a constant speed. On the basis of application the developed stigmatic model allows evaluating the energy parameters of magneto-induction sensors depending on the properties of modern magnetic materials. The simulation results showed that the MMF value is constant the magnet determines the main parameters of magneto-induction sensors, so the use of modern magnets based on rare earth they allow to eliminate the traditional disadvantage of outdated types of magneto-induction sensors, that is, to reduce their size and weight. The application of the proposed stigmatic model expands the scope of possible solutions to extreme problems for selection and justification parameters of magneto-induction sensors, helps to improve the accuracy of systems for diagnosing the technical condition of the car fleet and traffic safety on railway transport.

The article discusses the issues of using the technology of replacing inventory rails with rail lashes of a jointless track. For the production of works on the replacement of rail lashes, excavators on a combined course have been selected as the leading machines, which in recent years have been widely used in the production of works for the current maintenance and repair of the railway track. The paper presents the results of a comparative assessment of the use of rail lash replacement technology using attachments and using a pair of trolleys. In order to select the best technology for the production of works on the replacement of rail lashes, a methodology for assessing the economic efficiency of using a particular technology has been developed. The main indicator in the calculations were the given operating costs, taking into account the cost of the machine per unit of work, the cost of relocating the machine, the delay of trains, the wages of track fitters and the discharge of rail lashes. According to the results of the calculation, it was found that it is economically advantageous to replace rail lashes at the front of work up to 4 km using technology using a pair of trolleys, at the front of work more than 4 km, it is advisable to replace rail lashes using technology using attachments. The maximum economic effect when using technology with the use of attachments is achieved with a work front of 10 km. A comparison of the results of work on two technologies gives grounds to conclude that with a three-hour «window», the volume of work performed on the technology with the use of attachments is 1,7 times higher than the volume of work performed on the technology with the use of a pair of trolleys.

Developed Methodology let make the calculation of coaxial cable parameters with account of the frequency of the transmitted signal. The comparative analysis of parameters of RC 50-7-28 and RG142 cables has been made with the values have been got by the measuring with the circuit analyzer according to the reference book with the results of the calculations. Check the accuracy of the calculation has pointed out the necessity for account of complementary factors for the purpose of much more correct account cable attenuation in the frequency spectrum.

The article deals with the locomotive lifecycle problem at vehicle technical maintenance and repairing service. It proposes to encapsulate the statistic methods into the automatic locomotive depot control system basing on the example of management with the minimum stock spare parts level. In such a group of companies as "Locomotive technologies" the efficacy of maintenance and repairing technological processes is improved by creation and implementation of the information management control system "Network diagram" into the locomotive depot service. Its implementation was started in 2016 and should be completed by the end of 2017. In practice methodological approaches of international (ISO) and national (GOST) standards of management quality and reliability, lean manufacturing and statistic methods of management in conditions of locomotive depot service are proposed to be used basing on the principle of "Built-in quality". In this case logical constructions, algorithms and formulas are encapsulated into “Network diagram” software significantly reducing the training level demands of the depot personnel. The article also proposes to control the minimum level of stock spare parts in the locomotive depot in terms of “Network diagram” software through encapsulation of probabilistic-statistical methods of minimum stock calculation according to the data on intensity of parts consumption and the time of their delivery to the depot.

The article presents the results of measurements of electricity on active and passive sectioning posts the traction power supply system direct current sections of railways with III and IV path profile type. Basic characteristics of operating modes sectioning posts for the purpose of assessing the amount of electricity transferred and duration of work electricity storage in different modes are considered. The most observed voltage values, volumes of transmitted energy and duration of each case are defined. Choice of theoretical distribution laws, allowing to use the experimental values obtained in further calculations in modeling of operating modes electricity storage is completed.

The results of edge stresses and stress measurements in the neck of the rail in a curve of radius 380 m, obtained in the tests on the effects on the way the locomotive CKD6e-2108, freight gondola 12-9941 and 12-9920, on railway line Almaty - Chu. The dependences of the stresses in the edges of the soles and neck rail on the speed of the test vehicles. The possibility of a transition from stress to lateral forces.

The calculation of the forecast demand for electric energy by energy systems and complexes of the constituent entities of the Russian Federation is an urgent task. The use of deterministic methods for objects of a similar scale is practically excluded due to the absence or significant incompleteness of the source data. Statistical data available in official sources in an unchanged format is usually presented for a period of 3 - 5 years, which is insufficient for the use of artificial neural networks. The article attempts to study the properties of similar energy systems and complexes. Modern power systems and complexes belong to closed subsystems, the set of elements and connections of which is equivalent to the set of elements of local subsystems of a higher level energy system. This means the inadmissibility of drawing up predictive rules of functioning without taking into account heterogeneous external influences. The system and subsystems are presented as a "black box". Interactions between the system and the external environment and within the system are carried out by the transmission of signals, which are described by a finite set of factors available for analysis and forecasting. The analysis of the possibility of supplementing the general population with statistical data on other objects with a similar structure is carried out. The property of heteromorphism of energy systems and complexes is confirmed. The example of energy systems in the regions of the Russian Federation shows the possibility of a similar approach if non-collinear groups of factors are applied to the analysis. The results of 15 calculations of the most energy-intensive entities of the country are presented, in 28 % of cases the accuracy of forecasted power consumption accuracy is less than 5 %. A further increase in the accuracy of the forecast should develop in the direction of increasing the number of input factors, subject to the condition of the absence of their collinearity and multicollinearity. It is shown that energy systems and complexes of various scales can be described by non-Gaussian stable distributions with infinite dispersion of non-Gaussian distributions, which makes incorrect the use of such methods as the simple extrapolation method, as well as statistical methods based on the assumption that the random distribution law is normal.

Analysis of failures bogie side frames of freight cars in the network of JSC «Russian Railways» for the period from 2006 to 2013. Disadvantages of the well-known constructions of trucks of the car of model 18-100. Mathematical modeling of movement of a wheel pair bogie 18-100, set the negative impact of the spread of the values of structural parameters of the chassis of the car on the indicators of its dynamic qualities and driving safety.

The article deals with the application and use of heat pump installations as a low-potential source of heat energy to provide consumers with heat energy in the building heating system. Today, one of the most environmentally friendly and economical alternative sources of thermal energy is a heat pump unit. The use of these devices will reduce COemissions. The main advantages and disadvantages that appear during the operation of heat pumps are listed. Based on the results of tests of boilers using organic fuels (coal, fuel oil, natural gas)and low-potential heat sources with an electric drive, the dependences of the heat transformation coefficient of the heat pump and the efficiency of boilers operating on organic fuels on the cost of conventional fuel per unit of released energy are constructed. The coefficient of heat transformation of heat pump installations in the range of changes in operating parameters 3,0 < µ < 5,0 is determined. A graph of the dependence of the energy conversion coefficient on the temperature of the heat carrier in the heating system and the ambient temperature is constructed. A schematic diagram of the connection of a heat pump installation to the building heating system is proposed. Studies were conducted in the period from April 1 to April 21, 2021 in the laboratory auditorium of the educational building of OmGUPSa and the readings of the main parameters of the operation of the heat pump unit with the Vitocal 242-S heat pump were recorded. Based on the results of the main parameters, the following are calculated: the thermal load on the room heating system; the temperature of the coolant in the supply pipeline; the amount of electricity consumed by the heat pump; the conversion coefficient of the COР. The optimal values for this heat pump unit under the specified operating modes are estimated.

The desire to reduce carbon dioxide emissions and the transition to electric transport are becoming key areas for the development of transport infrastructure in cities and agglomerations of the European part of Russia. For an effective transition to electric vehicles, it is necessary to develop a network of charging stations capable of meeting the growing demand for environmentally friendly modes of transport. The subject of the study is the analysis of the spatial and temporal characteristics of the movement of cars to optimize the location of the charging infrastructure. The aim of the work is to develop a methodological approach to determining the concentration zones of transport activity based on real data, which will make it possible to reasonably select locations for the installation of charging stations. This article discusses the approach of using the DBSCAN clustering algorithm to analyze the spatial and temporal characteristics of car movement based on real data on taxi rides in Omsk. This algorithm is implemented in the Python programming language. In the course of the study, the main spatial and temporal patterns of taxi movement in the studied region were identified and the initial and final points of taxi routes were combined into well-founded clusters. The analysis makes it possible to identify the main areas of concentration of transport activity, which forms the basis for further modeling of traffic flows in order to optimize the location of the charging infrastructure. The scope of the results includes the planning of urban transport infrastructure, the development of a network of charging stations for electric vehicles and the optimization of traffic flows. The findings of the study confirm the effectiveness of using the DBSCAN algorithm to identify areas of high traffic activity, which can significantly improve the quality of charging infrastructure planning and accelerate the transition to environmentally friendly transport.

In the article the questions of increase of efficiency of structural subdivisions, members of the directorates of the West Siberian railway - branch of JSC "Russian Railways", such as infrastructure Directorate, Directorate railcar rolling stock and the Directorate of buildings and structures. The aim of this work is to identify structural units with the lowest energy efficiency indicators. This requires estimation of an indicator such as relative energy efficiency over a period of time equal to one calendar year, based on data of annual consumption of electric energy and annual volume of enterprise work. The article also outlines the main provisions of the concept analysis and monitoring the energy efficiency indicators of stationary objects of the railway transport, which will identify inefficient structural subdivisions with the use of control actions to reduce irrational consumption of energy resources. Calculation of the relative energy efficiency is one of the stages of this concept. The result is a received charts of the relative energy efficiency of structural subdivisions of the West Siberian railway which allows to make a comparison of this indicator. According to the results of comparison found that 10 of the 65 structural units have a low indicator of relative energy efficiency. This suggests the need for careful study the reasons of the low values of energy efficiency in these structural subdivisions and proposals the measures to eliminate this situation. The method and sequence of these activities proposes into the third and fourth stages of the concept. The establishment and subsequent application of a unified approach to the analysis and monitoring of energy efficiency indicators for all departments will increase the energy efficiency of the territorial branches of JSC "Russian Railways" and the holding company as whole.

In article the solution of a task of the organization of operational monitoring of elements of the rolling stock on the basis of the methods of statistical definition of quality which were widely used in the analysis of defects of the current production is considered. The problem is solved on the example of carrying out control and diagnostic operations by results of which realization the conclusion about technical condition of elements of the rolling stock becomes. The approach offered in article allows to consider a posteriori information and by that to optimize the volume of the carried-out works. The received results can be used at the solution of a complex of tasks of decrease in resource intensity of system of repair and the maintenance of the rolling stock.

The use of new self-supporting insulated wires and high-temperature wires in the operation of power lines allows increasing the capacity of lines and, as a rule, reducing operational costs. An optimal utilization of the power line load capacity depends on the precise determination of the permissible current loads. The values of permissible currents and steady-state temperature are the main parameters of the line operating mode, affecting the strength and sag of the conductor. The temperature of the wire depends on weather conditions and current load. There are methods for determining the temperature and permissible currents for widely used traditional wires such as AC. They are partially outlined in the EIS (Electrical Installation Standard) and the standard of PJSC FGC UES (Federal Grid Company of Unified Energy System) of 2013. However, there is lack of studies in new types of wires. The paper considers the effect of weather conditions and load on the temperature and real-power losses in insulated and high-temperature wire, and solar radiation is under special consideration. For comparison, we present the results of calculations on traditional AC wires. The research shows that solar radiation, being taken into account, provides an increase of real-power losses of about 2 % with the given values of load and weather conditions. Calculations of permissible current values according to the developed technique for classical AC wires reveal a high coincidence with the values from PJSC FGC UES standard. The relative error is within two percent, and the proposed method is more generalized. It allows simultaneous analysis of both uninsulated and insulated wires. Due to the widespread use of self-supporting insulated wires, power industry experts can use the developed software in the design and operation of modern power lines to optimize capacity.

The authors consider the question of the limits of applicability of the capacitor method for measuring the real part of the dielectric constant of printed circuit boards and telecommunications cabled rail transport using the example of FR-4 fiberglass laminate and the cable PK-75-4-12 in the frequency range from 10 Hz to 100 MHz. The measurements were carried out at a constant temperature and humidity of a known material. Comparison of the obtained values with the passport data on the material is carried out; a measurement procedure is developed with overlapping frequency ranges by changing the values of the measuring resistors from larger to smaller with increasing frequency of the input signal. It is shown that in the high-frequency region, the measurement accuracy is directly affected by the parasitic inductance of the capacitor sample under study, as well as the active resistance of the leads and plates and its increase due to the skin effect. The article also discusses the ways of accounting and calculating the parasitic elements of a capacitor. One of these ways is to study the characteristics of the elements of the sample at the first proper serial resonance of the capacitor under study.

The article presents the results of the development and implementation of a method for controlling the technological processes of repairing locomotives based on network planning. The methodology allows you to track online bottlenecks during current repairs and reduce the duration of the critical path by varying the time indicators of events and works, using the aggregate-nodal repair method, redistributing resources between critical and non-critical works. The developed methodology is based on the adjustment of basic repair networks, taking into account the workload of process equipment and repair personnel, the availability of spare parts and materials, the need for unscheduled work during the planned installation of a particular locomotive for repair. This approach was implemented within the framework of the automated control system (ACS) «Network Schedule» and provides control and adjustment of the implementation of technological operations according to the indicators of technological preparation of repairs. An algorithm has been developed for determining a generalized performance indicator when assessing the quality of functioning of an automated maintenance and repair control system for a locomotive in service locomotive depots.

The object of the research is the solid rocks massif containing the Kuznetsovskiy tunnel with a length of 3890 m, the greatest depth of the deposit is 355 m, which crosses the mountain pass section of Sikhote-Alin on the Komsomolsk-Sovetskaya Gavan line of the Far Eastern Railway. The aim of the studies was a detailed analysis of the engineering and geological conditions of the facility and their impact on construction and operation. These data are obtained as a result of field research, laboratory testing of physical and mechanical properties of rocks, evaluation of water flow to drainage structures and analytical calculations. The massif is composed by terrigenous rocks - a rhythmic interlayering of heterogeneous grained sandstones, siltstones, gravelites, conglomerates, that are classified as strong. Layering has a steep drop and a sublatitudinal strike, deviating from the axis of the tunnel by 20 - 60 °. The tunnel axis is crossed by a system of faults of various capacities, their total capacity is 334 m, which is 8.5% of the length of the tunnel. The fault zones are associated with increased fracturing, reduced stability, in places abundant water inflows that have peaks in the summer, the threat of landslides, intense silicification and sulfide mineralization. The obtained monitoring materials by methods of recording natural pulses of the electromagnetic field of the earth (NPEFE) (EEMEMP) and dipole electromagnetic profiling (DEMP) allowed to draw a conclusion about the real picture of the development and forecast of the rock pressure, as well as the dynamics of the groundwater entering the mine for safe construction and operation. The state of the geodynamic conditions of the mountain massif is characterized as stable. Available data can be used as a starting point for assessing and forecasting aspects of the construction and operation of the second stage of the tunnel.

Intermodal transportation management is a complex and responsible process. When carrying out international and intercontinental contrailer transportation, rail transport is traditionally used. The task of railway transport is to ensure transportation along the so-called «land bridges» - land sections where the route begins or ends, or through which it passes in transit. Despite a significant level of computerization and informatization, the level of delays in the delivery of goods in the field of contrailer intermodal transportation does not decrease. The unsatisfactory progress of the contrailer trains is a significant factor in the occurrence of these delays. This problem is common, and not only appears before intermodal operators operating the Siberian and Eurasian continental land bridges, which pass through the territory of Russia and Kazakhstan, respectively, and for the delivery of goods from Japan, South Korea and Taiwan to the countries of Eastern Europe. Named problem applies to the American and Canadian land bridges, through which Japanese goods reach consumers in the United States and Canada and through the ports of Germany and the Netherlands to consumers in Western Europe. This situation is due to the lack of effective approaches to the construction of control systems that would demonstrate a high level of efficiency in conditions of uncertainty, which is a natural component of the transportation process.

Currently in Russia there is an active development of industry, which requires a large amount of energy resources. At the same time, there are several obstacles in the way of providing all consumers with the required volume and, most importantly, the quality of energy. First of all, this is due to the technical condition of the equipment of both consumers and energy producers and the absence of programs for the implementation of measures aimed at increasing energy efficiency. Today, a full-fledged assessment of the energy efficiency of the production of many enterprises is difficult due to the lack of a single physical and mathematical apparatus and a universal criterial assessment of the energy efficiency of enterprises. This leads to the fact that a correct assessment of energy efficiency indicators and energy saving potential is not fully possible. Most of the existing methods for assessing energy efficiency indicators are limited and allow assessing only one or several indicators, do not provide for linking all indicators into a single whole. In addition, there is no criterion for assessing energy efficiency that is uniform for all components of heat supply systems. A promising direction of modern research in the field of heat supply systems is the improvement of methods for assessing the energy efficiency of heat supply systems through the use of a physically and mathematically substantiated criterion for the energy efficiency of the heat supply system of industrial enterprises and the creation of unified methods and an algorithm for assessing the indicators of the energy efficiency of heat supply systems of various compositions and devices. Special attention is paid to assessing the reliability of the initial data. This assessment is possible using the correlation method. In practice, correlation and regression analysis is widely used to predict the consumption of heat energy. This approach can also be used when assessing the reliability of the initial data using the Chaddock scale. In the course of the research, methods of constructive and verification calculations, experimental and analytical research, the method of correlation analysis, and statistical research methods were used. As a result of the research, a unified, generalized methodology for assessing the indicators of the energy efficiency of the heat supply system of the enterprise has been developed. We created the algorithm given a comprehensive assessment of the energy efficiency of the heat supply system of an industrial enterprise and to assess the potential for energy saving.

The paper considers the use of simulation modeling in the reengineering of technological processes for repairing rolling stock units on the example of repairing a bogie model 18-578 of an open-top car. The most time-consuming sub-process of repairing the bolster of this bogie was considered as the object of reengineering. Three options for reengineering of this subprocess were considered, implying a complete replacement of the technological equipment currently in use at repair operations (positions) with more efficient positions of the subprocess. To substantiate the choice of the most preferable reengineering option, the values of such indicators of the functioning of the subprocess under consideration as its productivity per shift (throughput), the load factor of the resources used at the repair positions, the volume of work in progress at the end of the shift, the number of workers employed in production and the costs associated with the possible purchase of new technological equipment. Simulation modeling of the functioning of the considered sub-process of bogie bolster repair was carried out on the basis of the methods of the queuing theory. The construction of simulation models and their assessment of the above indicators were carried out in the Arena RockWell Software environment. When developing simulation models for each of the possible options for reengineering a subprocess, the discipline of its organization and maintenance was taken into account. In the article, for each of the reengineering options, the calculated quantitative estimates of the listed indicators are presented, obtained using the corresponding developed simulation models. The use of these assessments reduces the risks in the development and subsequent implementation of organizational and technical solutions associated with the modernization of the considered technological sub-process of repair of the bolster of a gondola car bogie.

The article deals with the possibility of applying an unconditional diagnostic algorithm, applied to a specific problem of searching for damage in a station's tonal track circuit. The aim of the work is to substantiate the possibility of applying diagnostic algorithms, in order to reduce the time of search and repair of damages. The order of compiling the diagnostic algorithm is shown, conditional probabilities, diagnostic weights, private and general diagnostic values are calculated. On the basis of the calculations performed, an unconditional algorithm for diagnosing the tonal track circuit was compiled. The results obtained in the article can be used for technical maintenance of automation systems of operating railways.

When developing a set of organizational and technical energy saving measures, it is necessary to correctly assess the feasibility of using certain measures not only in terms of return on investment, but also based on the technological process of the enterprise. It is necessary to take into account not only the current parameters of the installed equipment, but also other, important factors: the degree of equipment utilization during the year, since this parameter in the equipment during the inter-heating period, as a rule, is significantly less than in the heating period. It should also take into account the prospects for the development of the enterprise. Many modern energy-saving technologies have a long payback period, and this is caused not so much by a small energy-saving effect as by the low popularity and low demand for these technologies, which leads to high purchase and maintenance costs. With the right choice and operation of equipment of this kind, an enterprise can significantly reduce the cost of its products and increase its competitiveness in the market. The article discusses the issues of approaches to assessing the potential of energy saving and the choice of priority areas for increasing the energy efficiency of heat supply systems of industrial enterprises. The described energy saving measures are applicable to the majority of existing heat supply systems and are the most common. The given procedures for assessing the technical and economic effect allow us to pre-evaluate the significance and feasibility of applying a particular event.

In the article presents the network model of processes of planning and the accounting of transportations, and also processes of execution of documentation at freight dispatch in the intra republican message of the railroads of Uzbekistan by means of composite document management. Composite document management provides the movements of documents in paper and in electronic medium, and also their composite decisions. The special the automated system (AS) will support processes of electronic document management and to make the reporting in the automated mode. For mathematical modeling of process of document management in this work it is used methods of network planning and management. It is described characteristics of the offered technology of planning and the accounting of transportations, and also execution of carriage documents at freight dispatch in the intra republican. It is applied, the PERT method for calculation of accidental temporary characteristics of works. Temporary characteristics of events are determined by a method of a critical way. Tables with the sequence of works with the indication of optimistic, probabilistic and pessimistic assessment of duration of performance, and also with results of calculations for determination of average time and dispersion are made. The network schedule of works, in compliance of technology of document management by means of which terms of performance of work are evaluated, entering document management process is made. Durations of critical and noncritical ways are determined. The results received in article confirm efficiency of the offered technology of document management. Use of this technology providing filling of documents electronically and fixing with the digital signature (DS), it is expected to lower expenses of time of consignors and the railroad, to increase productivity of works and quality of the provided services, to create the centralized information base.

Microminiaturization elements of communication systems contributed to development Internet of Things, which led the expansion of various railway transport services. One of the Internet of Things component`s is the wireless sensor network (WSN). Feature of WSN is a dynamically changing spatial and information network environment. It complicates the adoption of promptly reliable management decisions based on assessments of the states of network elements. One of the directions of making a reliable decision in a complex network environment on the WSN is using cognitive maps in the WSN control nodes. In this article discusses various models of cognitive maps for assessing the states of network elements and network processes, which can also be used for railway transport services.