Search

Purpose. The substantiation of the resources and energy saving principlesdue to more efficient technologyof the explosion-proof power equipment loading ability use in coal mines. Methodology. Methods of the statistical analysis are used for transformer substations load spreading determination; the technocenosis theory is used for rank and kind spreading principles determination. Findings. A new technology of transformer substations loading ability use is offered. It is based on the determination of calculated substation load for mining areas by specific energy consumption and further transformer state monitoring. A new relation was obtained. It proved that transformer equipment park for Western Donbas mines is optimal from the point of species structure view. It allowed indicating, that the existing nomenclature row of transformer nominal power is satisfied, but the need to reduce the number of 400 kVA-power substations by the corresponding addition of 250 and 160 kVA-power substations is recommended. Originality. It is proved that due to specific mining conditions variety, the use of unified model for power loads calculation is impossible. That is why for the efficient mining power equipment exploitationthe monitoring is offered. It will allow transforming every static model to adaptive. It was firstly established, that power transformer park is a technocenosis, which species structure for Western Donbas mining conditions accords to optimal. It indicates, that the existing nomenclature row of transformer nominal power is satisfied, and there is not extension necessity for more rational selection and transformer substations loading ability use efficientincrease. Practical value. The determination of optimal species structure for mining power transformerswillallowtoavoid additional expensesin engineering onWestern Donbas mines similar conditions. New principles of loading ability use will allow the determination of factual and forecast remanent substation resource. It will be useful for optimal transformer park forming and up-to-date databases of mining complexes operation modes implementation. [ABSTRACT FROM AUTHOR]

Purpose. The determination and substantiation of the explosion-proof factory-assembled mobile transformer substations (TS) effective use in a coal mine. Methodology. The methodology of TS load capacity is based on the transformer insulation deterioration theory and heat processes randomicity complex accounting due to real load data use, variation of environmental factors influence, technical restrictions and standard requirements concerning electric power quality for mining complexes. Findings. The findings showed that for Western Donbass region coal mines the TS effective use by its load capacity becomes available deu to taking into account the environmental conditions and use 1140 voltage level for mining complexes power supply. The necessity of operating mode monitoring providing with the averaging interval of the 2.5 minute has been proved. These findings allow us to use TS effectively and to replace them for the reason of factual state deterioration before the equipment failure happens. This will provide an opportunity to form the TS park rationally. Originality. The universal dependence of TS load capacity on environmental factors influence has been established. Conditions for existing power reserves of the explosion-proof TS load capacity extraction have been determined. Practical value. Received dependences and determined conditions of TS load capacity use will allow assessing factual and forecasting residual life of e substation. It will be useful for optimal TS park forming in coal mine and up-to-date data bases concerning mining complexes operation modes implementation. It will allow developing principles of electric loads calculations for this equipment type and specific exploitation conditions. [ABSTRACT FROM AUTHOR]

Purpose. Development of new concept of regulation of development of Ukrainian mining regions on the basis of the strategic management of mining enterprises. Justification of the integrated mechanism of implementation of the developed concept. Methodology. Theoretical and methodological basis of the research consists of the theory of regional development, management of mining company, systems, innovations, works of domestic and foreign scientists devoted to restructuring of the mining industry, to the solution of problems of the depressed regions, implementation of environmental protection measures after completion of mining operations, legislative acts of the Verkhovna Rada of Ukraine and Cabinet of Ministers of Ukraine. The general scientific methods of investigation processes and phenomena was also used (namely, the epistemological analysis - to determine the parameters and characteristics of different systems life cycle management of mining enterprises, system approach - to study the relationship of processes and phenomena in the development of the synchro-mining concept and justification mechanisms for its implementation; comparative analysis - to determine the differences between the conceptual approaches of strategic management of mining enterprises). Factual basis of the study were the primary data about the results of mining operations in Dnieper- Donetsk region and the results of the restructuring of the coal industry in Ukraine. Findings. It is proved that the level of efficiency and duration of mining enterprise partially depends on the mineral resources and their extraction conditions. It is proved that a considerable share of profitability may compose business projects of other economic directions, implemented using the resource base of the mining company. Therefore, in order to ensure sustainability of the surrounding area the strategic management of the enterprise should be based on the principles of diversification of economic activity. It is proved that with the approaching of the life cycle of a mining company to the stage of cessation of mining operations, the level of profitability from the main type of activity is being reduced, and overall profitability of simultaneously operated their activities remains unchanged or increases due to new projects, implementation of which was not possible with the active core business. Originality. For the first time a new coherent concept of sustainability of mining areas and strategic development of mining, which was so called synchro-mining was proposed. Scientific and methodical approach to the selection mechanism of regulation of monostructural mining area based on the integration of the interests of government, business and science is improved. The scientific and methodical approach to the selection of mechanism of regulation of monostructural mining area based on the integration of the interests of government, business and science was improved. The concept of synchro-mining is based on the complex of actual innovative technologies that already could be implemented on existing mining enterprises. Practical value. The concept of synchro-mining based on complex actual innovative technologies that might be implemented to the existing mining enterprises. Also, the proposed concept is based on the system of diversification of business and a comprehensive mathematical model that can be used to calculate the optimal amount of investment, payback period, the sequence of implementation of existing projects taking into consideration the internal and external factors. On the basis of the proposed concept the regional policy of territories development may be updated. [ABSTRACT FROM AUTHOR]