The article deals with the issue of assessing the possibility of ensuring the quality of electricity in terms of voltage deviation by consumers. The analysis of the characteristics of modern markets, energy and power. It is revealed that the transition of the new market economy is left without the possibility of regulating the voltage consumers, which are parties to retail markets. The order of an assessment of possibility of providing the required quality of the electric power on conclusions of electric receivers is offered and its realization on the example of real electric networks is shown. Recommendations were developed to address the problem of voltage regulation at the consumer.

The article discusses an economical way to deploy diagnostic monitoring systems for high-voltage electrical units through a combination of passive fiber-optic systems for collecting and transmitting technological information of SCADA with diagnostic information transmission systems of systems for continuous technical diagnostics in them. The usage of existing communication network of SCADA will increase economy and expand the scope of continuous diagnostic systems.

The paper deals with the issues related to the effect of slagging within the steam boilers furnaces and shows the determination results on peat ash fusibility of Kirov region deposits. Fusibility properties of peat ash (temperatures of deformation, sphere, hemisphere and flow) from the four industrial areas (Dymny, Pishchalsky, Karinsky, Gorokhovsky) depending on its chemical composition are presented. Melting temperature of the mineral part of the peat, determined by GOST, is averaged and does not reflect the actual melting temperature of the individual particles in fly ash. The existence of such separate particles having a melting temperature below the average melting temperature of the ash makes it difficult to find the operating temperature of the torch to reach the minimum of the furnace slagging during peat combustion. The comparison of melting characteristics of peat ash with the reference literature data is performed. The initial slagging temperature is calculated depending on the ratio of the acidic and basic oxides in peat ash.

In the article the method of an estimation of a condition of isolation of overhead transmission lines with use of the data of the synchronized vector measurements is offered, the justification of necessary diagnostic parameters is resulted.

The paper analyzes the technical condition of the network equipment of Western electric networks of PJSC «Yakutskenergo» for the last 10 years. The geographical location of the networks of the electric networks is shown, which determines the scale of the study. Technical indicators in the interval of 10 years are presented, which testify to an increase in the volume of fixed assets of the enterprise. Mathematical models of the wear dynamics of the transmission equipment of the Western electric networks have been obtained. It is proved that the technical condition of the equipment will deteriorate further in the absence of appropriate financing.

The analysis of the operating modes of the frequency-controlled electric drive of the pumpjack with the use of dynamometer cards, wattmeter diagrams and the mathematical model of the pump-jack, the effect of the shape of the dynamometer card on the operating mode of the electric motor of the pumpjack is determined. The ways of protection of the transistors in the frequency converter from voltage increase are considered at the transition of the electric motor to the regeneration.

High temperature atlass of spectral lines parameters of the combustion production of energy fuels and their use for modeling the radiation characteristics of the optically active ingredients and radiation heat transfer in high structurally inhomogeneous multicomponent media are considering. The model of the absorption bands to determine the functions of spectral transmission and parameterization according to the results of numerical modelation performed by direct calculation of the fine structure of the emission (absorption) spectra, followed by their numerical integration. The results of the calculations are compared with the data of experimental studies.

In the article it is devoted the analysis and researches of origins and values of possible errors from not accounting of the main defining characteristics when calculating losses of the electric power on shop networks of a low tension. It is proved that in case of determination of losses of the electric power in lines of shop networks it is necessary to consider influence of the following parameters of the equipment: the heating of conductors caused by passing of current of loading through conductors and ambient temperature; resistance of contact joints of switching devices and their number; type of the load graph; ambient temperatures. The diagram of a shop network and daily load graphs of customers of one of the enterprises is researched. Errors of calculations of losses of the electric power are calculated and the analysis of influence of parameters of the equipment on value of losses of the electric power is carried out. The absence of reliable information about elements of shop networks of a low tension and not accounting of the determining leads to an error 5 - 80% in case of computation of losses of the electric power in the systems of industrial electrical power supply.

Determination of thermal regimes of composite cylindrical bodies by analytical methods leads to the appearance of complex characteristic equations, the solution of which is the determination of eigenvalues. The article considers a relatively simple approximate analytical method for determining the eigenvalues of characteristic equations for a two-layer cylindrical body under boundary conditions of the third kind. This method can also be easily used in more complex formulations of heat conduction problems.

This article is devoted to development of actions for improvement of quality of the electric power in low voltage networks, by installation of booster transformers (BT), and to calculation of economic effect in comparison with alternative versions of the solution of tasks of ensuring reliable, high-quality and available power supply of consumers.

The work is devoted to the numerical study of the process of downdraft fixed-bed gasification of woody biomass. Such processes are used to produce combustible gases at lowcapacity power plants. To improve the quality of the produced gas, it is proposed to use a mixture of wood fuel with a non-combustible material that can exhibit catalytic activity in the decomposition of undesired tary products. Adding a non-combustible material leads to lower heat value of fuel mixture, but contributes to a deeper gas purification. The aim of the study is to select the optimal "active material / wood fuel" ratio and to determine the minimum material activity at which its addition to the fuel becomes effective.

A complex method and an automated multifunctional installation have been developed for research acousto-optic, magnetoacoustic and magneto-optical phenomena in magnetic materials, for example, manganites, magnetic materials, ferroics, high-temperature superconductors.

Numerous oil wells within Rumaila field contain Electrical Submersible Pumps (ESPs). ESPs are utilised to maximise the oil production from existing wells by providing artificial lift where pressure is low, which helps maintain oil production levels. The number of ESPs installed throughout the Rumaila. Field is growing consistently to sustain oil field production. Due to the remote locations for each of the ESPs the current strategy is to supply power to ESPs using individual diesel engine generators located at each remote ESP well site. This is an inefficient design, as individual diesel engines are resource intensive due to maintenance and frequent diesel filling. The generators are also a source of significant unreliability causing ESP shutdowns/trips resulting in extended downtime. Given the above a Pre-FEED has been carried out considering supplying ESPs using OHTL’s supplying electrical power from EPP to ESPs in Area C. by uses parallel operation of diesel Generators , we could to constrict 124 from 184 and use 60 only ,by this we get high economic gain and technique, in additional that environmental protection by decreasing pollution.

The object of research is a hybrid power installation of a bus with a diesel engine and a synchronous electric motor. The purpose of the work is the development of engineering models of a synchronous electric motor and a diesel engine, the search for optimal electric currents control laws for electric motor and optimal bus moving laws with a hybrid power installation for general energy consumption. Synchronous electric drive and internal combustion engine models were used, convenient for research, analytical and numerical methods of parametric optimization and optimal control were used. Parameter values and laws of vehicle motion with energy saving are obtained.

The effect of paper thermal destruction on its luminescence spectra and luminescence excitation spectra in the spectral ranges of 400-550 nm and 250-450 nm, respectively, was studied. It is proposed to use the characteristic changes in the intensity and shape of the luminescence spectra as a criterion for the state of paper insulation of power transformers. On the basis of the analysis performed, it was concluded that when luminescence is excited at a wavelength of 360 nm, none of the main components of the paper can contribute to the recorded luminescence spectra. It is assumed that the resulting luminescence spectra are due to the emission of various impurities that enter the paper during its production.

Made an appreciation of measurements errors in method of proton magnetic resonance relaxation (PMRR) for receiving of values of spin-spin relaxation times Т2i and corresponding them values А2i, of relative amplitudes of spin-echo envelope. Estimatesof opportunities of reverse Laplace transformation (L-1) algorithm realized in UpenWin program for relaxation times spectra determination, minimization of errors and facilitation for interpretation received data of kinetic curve PMRR relaxation process.

The mathematical model and the numerical results of the heat transfer in laminar viscous flows in a tube fitted with triple twisted fins on a rod is obtained. The tubes fitted with triple twisted fins on a rod are widely used for heat transfer enhancement.