The paper presents results of a mathematical simulation of electromagnetic parameters of single lengthy grounding electrodes (electrode rod resistance, resistance against grounding alternating current flowing in the ground and grounding electrode voltage) at flowing of alternating power current. Approximate analytical expressions for calculation of the stated grounding electrode parameters are proposed in the paper.

A new method has been developed  for selection of resistor type according to over-voltage criteria that includes methods for calculation of resistor resistance R_N  and over-voltage ratio factor k_п which are used for evaluation of protective resistance functions.

The paper considers problems pertaining to reduction of time for restoration of a wind power station (WPS) by development of a method and control means according to informative parameter. A high-voltage oil transformer has been selected as a control WPS object.  The paper shows that the most informative parameter determining continuity in WPS power supply is an over-heating temperature of oil transformer elements. A method and means for control of WPS oil transformer serviceability are proposed in the paper.

The paper has experimentally determined that while demagnetizing ferro-magnetic bodies value of residual demagnetization depends on the first impulse amplitude of  the demagnetizing field. If we know a demagnetizing value up to which we have to demagnetize a part then it is possible to start demagnetization not from the maximum demagnetizing impulse amplitude but from the least one. In this case we reduce demagnetization time period and save power used for demagnetization.

The paper analyses a possibility to minimize damage due to operation of power systems using fossil fuels. Technological schemes of purification processes ensuring efficient  solution of  the ecological problem, particularly, in the case of power station operating on natural gas and fuel oil  are proposed in the paper. The paper contains an analysis of the mechanism in respect of processes occurring in the proposed methods for gas and liquid purification against detrimental impurities.

The paper proposes a mathematical model of a non-stationary heat conductivity of fencing constructions of heated buildings with the purpose to calculate their thermal resistance. Heat transfer while using contact and non-contact methods for measuring temperature fields at exterior surfaces has been analyzed in the paper.  The paper contains examples how to calculate a fence thermal resistance.

A mathematical model for heating multi-layer walls with non-symmetric boundary surface conditions has been developed in the paper. Advancing of phase transformation front along cross-section is considered with the purpose to take into account phase and chemical transformations in high-impact coatings and the Dirac δ-function is applied in this case.

While stating a problem nonlinear boundary conditions and differential equations of heat transfer with due account of thermal and physical characteristics dependence on temperature have been used in the paper. Solution of the problem has been realized by numerical methods in accordance with the developed algorithms.

Methods for higher power unit efficiency and decrease of specific fuel consumption for electric-power generation have been considered in the paper. The paper reveals that a heat exchange intensification makes a positive effect on efficiency and temperature reliability of power engineering equipment while using coil and artificially turbulized (contoured) pipes. 

Results of experimental investigations on metal temperature at various mode parameters are proposed in the paper. The paper contains equations for determination of conditions initiating heat-transfer drop.

A windmill theory as an open power system is resolved in the paper. The paper presents a mechanism of a frontal resistance and a thrust load of the operating windmill which is based on occurrence of an active environmental component and formulates the conditions under which any minimum resistance and maximum thrust load are realized. An algorithm and software for calculation of windmill streamlining pattern are developed in the paper. The calculation results are given the paper.

An influence of high-carbon (alloyed steel) work-piece heating rate on heating duration and quality has been analyzed in the paper. Taking steel grades 08КП and 1Х18Н9Т as examples the paper reveals that fast heating can lead to additional consumption of organic fuel and also overheating that requires a defect removal by annealing that is also related with significant increase of power consumption.

Profitability of industrial-heating boiler transition to mini-TPP is revealed in the paper. The paper presents a comparative analysis of high- and low-speed turbines of small capacity.

The paper provides a technical and economic analysis pertaining to selection of optimum biomass and local fossil fuel application technology for thermal electric energy generation while using a matrix of costs and a method of minimum value. Calculation results give grounds to assert that it is expedient to burn in the boiling layer – 69 % and 31 % of wood pellets and wastes, respectively and 54 % of peat and 46 % of slate stones. A steam and gas unit (SGU) can fully operate on peat. Taking into account reorientation on decentralized power supply and increase of small power plants up to 3–5 MW the paper specifies variants of the most efficient technologies for burning biomass and local fossil fuels.