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The article discusses the assessment of the impact of train schedule on the amount of electricity consumption for traction on sections of DC I-th profile type way. The proposed parameters of the train schedule, influencing the electricity consumption for traction on sections of DC I-th profile type way. The major scheduling options included statistical quantities and parameters characterizing the conditions of the batch passing trains, stop and solid thread schedules for truck-driving. Based on simulation modeling provided the main based on changes in the volume of electric energy for traction on the plot of the traction electric supply system when changing the parameters of the timetable. The dependences of the volume change of electrical energy for traction allow you to evaluate and determine the ranges of the parameters of the graph in which the variation of volume is minimal. in the considered ranges of the parameters of the train schedule, the amount of electricity for the areas of DC with the I-th profile type varies within 1 % with the constancy of other factors..

In the paper the device for reactive power compensation for the electric locomotives based on passive adjustable compensator was described. This configuration of the compensator improve the power factor of the electric locomotive in all operational modes and raise value of the power factor to its maximum possible value. The management of the compensator unit is based on the extremum seeking control autonomous voltage inverter. Mathematical modeling of electric locomotive showed increase the power factor to a value of 0,98.

The article outlines methodological approaches to assessing the effectiveness of measures aimed at improving the efficiency of recuperative braking application and the use of energy recovery. An example of calculating the energy efficiency of recuperation on a double-track section of direct current is given. The analysis of the influence of changes in such parameters of the section as technical and district speed of freight trains on the efficiency of energy recovery. The article presents the results of estimating the energy recovery components that form the economic efficiency of recuperation, and describes the approaches to predicting the change in this efficiency, depending on the change in the influencing factors.

The article describes the structural scheme, the algorithmic basis, functional composition and some technological characteristics of the hardware and software of information system of operating control parameters of the electric power in the traction power supply network, structural peculiarities of information-measuring complex, the hub characteristics of the data collection substation, type of equipment used in information and computational complex structure of servers for processing and storage, data volumes and characteristics of the necessary communication lines.

The paper deals with the problem of sustainable innovation development of the electric power system of Mongolia, taking into account the geographical position of the country on the border of a transport route between China and Russia. In the broadest sense between the Asian industrial region and Europe, the turnover between them is increasing every year. The main constraining factor on the way of this process is not electrified main railway line, passing through the territory of Mongolia. Shown the advantages of railway electrification to solve the problems of power supply industry and agriculture. The most important objective is the electrification of the transport route Sukhbaatar Ulaanbaatar-Zamyn-Ude, the length of 1111 km. It is shown that the realization of this goal will reduce rail route from Europe to Central Asia of 1,025 km. The forecast of development of transportation in the future. Along with this a forecast of the Mongolia’s electric power system, in which the traction electric load would be approximately 22%. Included the corresponding graph required the development of generating capacities in the Mongolian power system in order to adjust the available capacity to 3500MW by the year 2025. Proved significant advantages of electrified railway through improving electric locomotive in comparison with diesel locomotive. In contrast to the significant proportion of electrified railways of Russia on a direct current, proposed the path of traction power supply system 2x25kV. Following the example of other highly developed countries, it will go to the use of high-speed railways. Thus it is achieved balanced development of Mongolia's electric power system based on electrification of the transport corridor from Asia to Europe.

Recently, for the analysis of complex nonlinear processes, more and more attention is paid to the mathematical apparatus of wavelet transform. This is due to the fact that unlike the traditional Fourier transform, the wavelet transform provides information about the signal under study in the time-frequency domain. The purpose of research is to analyze and simulate a non-sinusoidal non-stationary mode based on the packet wavelet transform, the use of this method for transmitting the digital data stream of the signal under study. The simulation was carried out using the software package Simulink. In the study found that packet wavelet transform with high precision allows to determine the presence of higher harmonics in the power system, the efficiency of using wavelet transform to compress digital data stream of the test signal.

In connection with the negative effects caused by the fault of the insulators used in an overhead power transmission line of 6 - 10 kV, it is suggested controlling a condition of a post insulator by the device that responses when breakdown current goes through an insulator. The work of the device for identification of insulators defects is described. Equivalent circuits of an alarm device connection with an insulator in an overhead power transmission line are given. The basic processes, that occur in a system of a supporting insulator of an overhead power transmission line in a serviceable condition and if there is a defect in view of geometric capacitance, absorption current, steady leakage current and surface current of breakdown, are considered.

This article presents the rationale for the need to change the methodology for determining the absolute and relative values of energy losses to train traction. It is shown that when determining the relative value of the losses, it is necessary to take into account the amount of recovery energy returned to the contact network by electric rolling stock meters. To increase the accuracy of determining the absolute value of losses, it is necessary to take into account the energy consumption for the needs of the traction power supply system for prophylactic heating and smelting of ice on the wires of the contact network, as well as to ensure uninterrupted voltage on inactive electrified sections of railways. A formula is proposed for estimating the component of electric power losses in the contact network from the flow of energy recovery taking into account changes in the methodology for determining the loses of electric power for train traction.

The article considers one of the ways of improving the energy efficiency of AC electrical system railways 25 kV, 50 Hz. The proposed approach allows to determine the optimal location and capacity of an unregulated device for compensation reactive power according to the criterion of minimum active power losses in a traction electrical system. Modeling of trains on the site was made using instant schemes. Description of the traction power supply system implemented by the node potential method and Steinmetz’s symbolic method. Optimal value of reactive power for all possible locations of a compensating device was calculated numerically by an optimization method of Hooke-Jeeves according to the criterion of minimum active power losses in the traction network. The mathematical model allows to consider the elements of the traction network, schedules of trains, change of traction loads of electric locomotives, schemes of overhead network. The proposed approach was considered on the example test problem, which solution allowed to determinate the optimal location and required value of reactive power of an technical device. The placement of a compensating device in a certain place will allows to minimize the power loss in the contact network, track circuit and traction transformers from the flow of the reactive component of the current in average for all instant schemes with various traction loads. An unregulated technical device for compensating reactive power which is located between two traction substations reduces energy consumption for traction of trains on the 1 - 2 %.

The article discusses the traction parameters of a new generation electric locomotive. The existing schemes of service areas by electric locomotives and locomotive brigades on the studied railway test site are presented. A comparison is made of the main parameters of DC and single-phase AC electric locomotives, the operation of which is currently organized on sections of movement with trains of calculated mass in the long-term mode of thrust on the climbs of various steepness. The scheme of the proposed organization of operation of a double power locomotive and locomotive crews is presented. Calculated traction parameters of a two-system electric locomotive, taking into account the plan and profile of the track in the proposed areas of operation, specific resistivity to the movement of the locomotive and the composition of the train at the estimated speed, specific accelerating and decelerating forces of the train. When two-system electric locomotives are put into operation, it will be possible to reduce the fleet of locomotives in operation, the number of traction arms due to their lengthening and the number of locomotive change points, reduce the transit time of freight trains, increase technical and local speed, average daily mileage and average daily performance of the locomotive, reduce power consumption per traction . The operation of such electric locomotives contributes to the development of polygon technologies for managing the transportation process, improving the quantitative and qualitative indicators of various railway enterprises.

The article deals with measures to improve the energy efficiency of the transportation process. The necessity of creation of an automated system for monitoring the energy efficiency of the electric rolling stock. The algorithm, which allows to determine the reasons for non-locomotive crew specific rules of electricity on the trip. Developed form of protocols, reflecting the information on losses of electricity on the basis of a trip with the time and place of their origin.

The article considers one of the ways of improving the energy efficiency of three-phase power supply system of industrial and railway enterprises. Presented and proved a theorem, which allows to determine the necessary conductivity and the reactive branch currents compensating device with asymmetric structure, for which the equivalent conductivity of these elements and the load will be symmetrical and active. In three-phase electric circuit of an alternating sinusoidal current reactive elements allow to redistribute active and reactive power between the phases. The use of a compensating device with asymmetric structure will reduce losses from the occurrence of reactive currents, reverse currents and zero sequence in low-voltage three-phase power system. As an example of the use of the theorem and the calculated expressions for determination of conductance of the branches of the asymmetric compensating devices a special test problem was considered. It shows the values of power losses, the coefficients of voltage unbalance with and without using the device. Considered possible options for the practical implementation of such technical devices.

This article presents an algorithm and a method for calculating power flow of an open electric network with a voltage of 6-35 kV, taking into account the temperature dependence of active resistances. Calculation of the electric and thermal conditions of the electric network is carried out with a joint solution of the equations. The determination of stresses in the nodes is carried out using the inverse matrix of the nodal and intrinsic conductivities. The inverse matrix of nodal and intrinsic conductivities is determined based on the well-known direct Jordan-Gauss method. The equation of the heat balance of the wire used to calculate the actual temperature is solved numerically. Convective heat transfer is recorded only for forced convection, because wires of overhead power lines with a voltage of 6 kV and higher are located on various types of poles, at a height of at least 10 m. This fact allows us to abandon the use of formulas for natural convection and use expressions only for forced convection. Accounting for solar radiation in the presented algorithm is possible on the basis of two methods: simplified and considered in the standard of PJSC FGC UES, which allows you to take into account the actual location of the wire relative to the north. Using the test circuit as an example, the steady-state mode was calculated taking into account the temperature dependence of the active resistances. The results of a numerical experiment are presented, confirming the operability of the developed algorithm. The refinement in determining active power losses with and without taking into account the heating factor for the considered circuit is about 13%. Verification of the algorithm that implements the method of calculating the steady state (SS) of an open electrical network of a medium voltage class taking into account the temperature dependence of active resistances showed that in technically acceptable modes the developed algorithm has good accuracy in comparison with the RastrWin3 software package.

In this article, the technical condition monitoring of power supply line for devices of railway automatics is considered. The algorithm of determining location of the break with using the mathematical apparatus of discrete Fourier transform is proposed.

The article develops a methodology for optimizing the operating regimes of a water management system, taking into account the influence of the natural reservoir of water resources - the Kamenskaya floodplain. The foundation of the research is the assessment of the synergistic cost of water resources as an integrated indicator of reliability, environmental friendliness, and socio-economic efficiency. The aim of the work is to create a methodology that reconciles the interests of the power industry, navigation, and ecology to enhance the energy efficiency of water management systems. To achieve this goal, methods of water-energy nexus analysis, calculation of hydropower plant (HPP) firm power, an optimization block for HPP operating regimes, as well as the application of marginal utility theory and the profit maximization criterion (MR = MC) were used. The methodology is based on a combination of optimization approaches and economic principles, enabling the consideration of conflicting interests among various stakeholders in water management activities. The scientific novelty lies in the proposal of unique techniques with no global equivalents: calculation of firm power, determination of marginal water costs, and the use of indifference curves for balancing the interests of water users. The developed approach allows for the justification of electricity tariffs for a given generation output, as well as solving the inverse problem - determining the optimal power production level for a given tariff. The research results are applicable to the management of water management systems, especially under conditions of stochastic energy sources, such as hydropower. The proposed methodology can be used to improve energy efficiency, ensure environmental sustainability, and comply with non-power requirements during the operation of hydraulic structures. The obtained data were validated using the case study of the Novosibirsk HPP. The conclusions demonstrate the high practical significance of the proposed techniques, their applicability in the real-world operation of complex water management systems, and their potential for integration into sustainable water sector development strategies.

The paper discusses the main limiting factors limiting the volume of transportation of high-volume freight trains. Designated approaches to solving the problems presented by the use of compensating devices. The paper presents the method of selecting installation sites and the power of compensating devices in the traction network, taking into account the growth in traffic volumes, allowing to evaluate the positive effect of the installation of compensating devices on the prospect of increasing traffic volumes. Determination of perspective power consumption is proposed to carry out using power consumption forecasting. To assess the effect of the installation of compensating devices in the traction network, three criteria have been proposed: unloading traction transformers, increasing the voltage level at the consumer, and unloading the power transmission lines.

Paper is devoted to the development of an improved algorithm for calculating the traction power supply system for further practical implementation in order to improve the accuracy of calculations of the traction power supply system by combining traction and electrical calculations with considering the current train situation. The relevance of the task is due to the need to improve the accuracy of calculations of throughput and carrying capacity under the conditions of power supply devices with considering the criteria for energy efficiency of the transportation process. The available solutions to this problem in the form of ready-made software systems and algorithms are considered. A numerical experiment was carried out for the DC section in the program "Complex of calculations for traction power supply", which showed that the relative error that determines the convergence of traction and electrical calculations is from 1.6 % to 5.1 %. The main reason for the discrepancy is the insufficiently correct calculation of the voltage at the current collector of the electric rolling stock. An improved algorithm for calculating the traction power supply system is proposed. The distinguishing feature of this algorithm is the implementation of a clarifying full traction calculation before compiling instant schemes and instant electric and traction calculations. As a result of the research, a general algorithm for joint traction and electrical calculations with considering the parameters of railway sections and the current training situation has been developed,. A conclusion about the advantages of the proposed algorithm and promising directions for further research is made.

The article deals with the modeling of the electric rolling stock and traction power supply system with the aim of solving the problem of reducing the electric power consumption for the traction of trains in the conditions of changing the schedule of freight trains. Simulation modeling is performed for the conditions of changing the mass of the train and the load on the axis. The description of the results obtained is based on regression models, the order of application of models in practice is given.

In this article made a scan of a current situation in electric power measuring on the rolling stock, proposed a concept of Global automatic electric power measuring system for rolling stock, stated technical requirements for modern electric power measuring systems for rolling stock.

The article deals with the analysis of the modes of operation of shunting locomotives; characteristics of the setting characteristics of the traction generators when performing resistance tests of locomotives. The statistical average values of the load parameters of diesel generator sets of shunting locomotives TЭM2 in the process of performing shunting work on marshalling and precinct stations. When monitoring the external characteristics of the locomotive when performing resistance tests with the ASKI "CYPRESS" was observed of the external characteristics of a normal ("classical") and "convex" shape. Normal (classical) external characteristics of the locomotive TЭM2 No. 1 equidistant removed from the borders of the tolerance field; and "convex" external characteristics of the locomotive TЭM2 No. 2 , in the field of tolerance, support of the constancy of the power diesel generator sets, due to the imperfection of the machinery of the regulatory system, particularly the Electromechanical characteristics of the pathogen.

The paper deals with benefits of a new rectifier-inverter converter of an electric locomotive based on IGBT-transistors. Main directions of heavy haul traffic's development are considered for Siberia and Russian Far East electrified railways. Throughput and carrying capacity of power supply devices extremely depends on the voltage level in the catenary network of electrified sections of railways. Objects of our research are electric parameters of the 25 kV, 50 Hz AC traction power supply system. Operation parameters of two different types of the electric locomotive’s rectifier-inverter converters are calculated and discussed. We investigated operation parameters for thyristor-based and IGBT-transistors- based rectifier-inverter converter. Current and voltage curves for the thyristor and the transistor type of the rectifier-inverter converter are given and discussed. Similarity factor of current curves for electric locomotives was calculated by equivalent sinusoid’s .method. Quantitative assessment of the voltage level, currents and voltage losses in the AC catenary network is given. The graph-analytical method was used for constructing currents and voltages vector diagrams. It is proved that electric locomotives with a new rectifier-inverter conversion based on IGBT transistors provides a reducing of the total voltage losses in three times in the traction network comparing the thyristor conversion's operation.

In the work completed a study of shape vertices a unimodel probability density function (kurtosis) on the output of the nonlinear converter «phase shift - code, which is the most important parameter for evaluating conditions of finding mode to this function. To increase the accuracy of assessment shifts phases when there is high level of random noise is defined not only quality, but also quantitative dependence of the kurtosis probability density function on the output of the nonlinear converter «phase shift - code» of Standard deviation phase fluctuations of the signal at its input. The mathematical model of the distribution function on the output of the converter «phase shift - code» for research and implementation of algorithms improve noise immunity measure phase shifts between harmonic components of voltage and current in traction power supply rail transport networks.

Examined the effect of oil pollution on the ballast bed of the railway track, namely, the effect of oil and oil products on the following functions performed by the ballast bed: maintenance of the rail-sleeper grid, perception of loads from rolling stock, filtration of melt and rainwater. Ballast oil pollution leads to an increase in its distribution in the environment. Oil and oil products have a strong negative impact on the environment, which leads to degradation of vegetation. The causes of oil contamination of the ballast bed, which lead to disruption of its functions, are determined. Attention to increasing the humidity of the ballast in the wintertime, which leads to freezing of the ballast and an increase in the stiffness of the path. Considered a method for cleaning gravel with a gravel-cleaning machine and revealed shortcomings. Studies of the effectiveness of washing oil-contaminated ballast gravel with O-BISM detergent in the absence of mechanical influence on the sample, as well as with the use of barbation and mixing of the sample. The optimal technological mode of application of the washing solution is established. Proposed an option for improving the cleaning of ballast gravel from oil products with a gravel-cleaning machine to solve the problem of efficiently cleaning the ballast gravel from oil pollution, which will solve the problem of crushed stone reuse and utilization.

The introduction of digital technologies in electrical networks and substations allows the introduction of new technologies and promising methods for managing transportation and distribution of electricity in intelligent electric networks of railways based on multi-agent control. These methods should provide improved performance, adaptive definition of restrictions on the use of electric power equipment, control of mode parameters, partitioning and power flow modes in distribution networks, restoration of power supply after emergency events. A method of adaptive control of transport and distribution of electrical energy in the power supply system of stationary consumers of railways has been developed, based on the hierarchical structure of IEC 61850, taking int o account the coordination of control and local controllers in the data exchange environment, a variable area of responsibility of control controllers multi-agent approach. It presents approaches to managing power flows to reduce energy losses, increase the capacity of transport channels and ensure restoration of the normal mode of the electrical network by reconfiguring it and managing active elements based on graph theory, taking into account the projected hourly load schedule, limiting the demand for power to active consumers and closed mode electrical network operation through controlled sections. The presented simulation results of voltage control in the test circuit showed the feasibility and effectiveness of the proposed approaches.

In work done modeling and analysis of noise immunity of the proposed measurement method of phase shifts between harmonic components of voltage and current in traction power supply rail transport networks and estimation of maximum permissible noise level, where workability digital devices used to study phase shifts in these conditions. The simulation results have shown that the probability density function on the output of the nonlinear converter «phase shift - code» remains a unimode at any ratio range converter and standard deviation of the phase of the input signal. Implementation of researched ways of microprocessor-based digital device guarantees the stability and accuracy of measurement results in traction phase shifting networks of power supply of railway transport in the presence of high levels of industrial noise, nonlinear fast variable nature of the traction load, sparking the pantographs for electric locomotives in contact network and use recovery systems based on pulse converters.