Lutsenko I. Increase of the efficiency of explosion-proof transformer substations loading ability use in coal mines

The dissertation is devoted to the research of the major scientific challenge to justify measures for the explosion-proof substations exploitation efficiency increase by establishing patterns of the complex influence of environmental factors, unsteady loads, technical restrictions and technological features of mining areas power equipment on the transformers loading ability and lifetime resource use in coal mines conditions. The dependence of transformer loading ability from the environmental factors complex influence at the site of substation installation is established as mathematical model form. A mathematical model for the windings temperature state evaluating is offered. It takes into account the actual loading mode, environmental factors influence and windings resistance changes in the transformer operational mode, which allows to determine adequately windings temperature, to assess the real insulation deterioration. The existing park of explosion-proof substation is analyzed in the terms of technocenosis optimal building theory, which allows specifying measures for its stable operation ensuring. The economic feasibility of the explosion-proof substation replacing both regulated lifetime, and from the standpoint of their loading ability efficiency increase is established.