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Komlev Yu.M.,JSC Ural Power Engineering Company
Power Technology and Engineering | Year: 2011

A method of calculating the transit losses of electric power for external consumers, supplied from the radial networks of electric power supply systems, is described. The method is based on separating the contributions of individual consumers from the overall load losses of electric power in the network. Theoretical expressions for the load loss for an individual consumer are presented, which enable both the quantity of electric power transmitted to the consumer and the profile of the consumer load chart to be taken into account. © 2011 Springer Science + Business Media, Inc. Source


Surkova A.F.,JSC INKOMTEM | Aznabaev A.A.,JSC INKOMTEM | Yazykov A.E.,JSC Ural Power Engineering Company | Khafizov R.Kh.,JSC INKOMTEM
Power Technology and Engineering | Year: 2014

This is a comparative analysis of the operation of devices for heating dead-end offtakes of lines for live steam and hot intermediate heating steam in 300 - 800 MW power units. The operating efficiencies of pressure pipes for live steam and intermediate heating steam are estimated for various operating modes. The most efficient schemes for heating of dead-end pipes for live steam and intermediate heating steam are developed. Aspecific device is proposed based on the conditions for ensuring heating of the dead-end pipelines. © 2014 Springer Science + Business Media New York. Source


Alekhnovich A.N.,JSC Ural Heat Engineering Laboratory | Bogomolov V.V.,JSC Ural Power Engineering Company
Power Technology and Engineering | Year: 2010

The combustion of coal mixtures is regarded both as a necessary step and as a technology which offers noticeable technical, economic, and ecological advantages. The choice of an optimal, or even acceptable, mixture requires knowledge of the characteristics and properties of the coals being blended and of how their behavior changes in a mixture. With mixing, all the indicators characterizing a coal undergo changes and an improvement in one may be accompanied by the deterioration of others. Based on experimental and published data, we have analyzed the major characteristics of mixtures that control the operation of coal-dust thermal power plants, first the ones which are not additive, and then those whose additivity is not evident without experimental study. © 2010 Springer Science+Business Media, Inc. Source


Bogomolov V.V.,JSC Ural Power Engineering Company | Alekhnovich A.N.,JSC Ural Heat Engineering Laboratory | Kuznetzov A.Yu.,JSC Ural Power Engineering Company | Bogomolov O.V.,JSC Ural Power Engineering Company
Power Technology and Engineering | Year: 2012

An instrumented study of furnace process in BKZ-160 boilers at the Sogrinskaya heating and electric power plant is used to examine boiler slagging and capacity limitations. The causes of slagging are established: burning of low-ash coals, excessively fine coal dust, high air inflow into the furnace and gas ducts with corresponding low excess air in the burner feeds, nonoptimal flue gas dynamics owing to a nonuniform distribution of secondary air between the burners, etc. These results confirm that, with other conditions the same, tangentially-fired furnaces are subject to more slagging, often at emergency levels, than the other standard combustion configurations. © 2012 Springer Science+Business Media, Inc. Source


Mints I.I.,JSC Ural Power Engineering Company | Logvinenko I.G.,JSC Ural Power Engineering Company | Khodykina L.E.,JSC Ural Power Engineering Company
Power Technology and Engineering | Year: 2011

This is a comparative analysis of microdamage by creep pores in the metal of steam pipes following prolonged high- (540 - 560°C) and low-temperature (512 - 530°C) operation. Microdamage at low temperatures is found to take place at considerably lower levels of equivalent stress than at high temperatures. Reducing the operating temperature after the onset of pore formation is not an effective way of enhancing the reliability and durability of bends. © 2011 Springer Science+Business Media, Inc. Source

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