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Information × Registration Number 0219U100161, 0117U000534 , R & D reports Title Improvement electrical safety and equipment reliability of power plant in Ukraine in emergency operation. popup.stage_title Head Bаrаnov Mykhаilo I., Доктор технічних наук Registration Date 28-01-2019 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description2  The object of study is electromagnetic phenomena and processes in power facilities in emergency situations. The purpose of the work is to increase the reliability of operation of power facilities of Ukraine in normal and emergency modes of operation by: ensuring their lightning protection based on the development of a new mathematical model for constructing protection zones in accordance with DSTU EN 62305: 2012; the development of new methods for preventing the false positives of relay protection and automation during lightning strikes, short circuits and switching processes. The research methods used the experiment planning theory, the regression analysis method, the analysis of variance method, the electromagnetic field theory and developed by the authors in previous works of the mathematical model of non-equipotential grounding device to obtain the voltage dependence between the most distant current transformer and relay protection panel on the parameters of the grounding device and emergency current. located in a multilayer soil with flat-parallel boundaries of separation, the method of diagnostics of the grounding devices, measuring complex "Kdz-1V"; to obtain analytical expressions based on the zones of protection from direct lightning strike using the sphere method, it rolls; for the group of bright-cavities with an arbitrary height and location, the methods of mathematical analysis and analytical geometry, the Delaunay triangulation algorithm, are used; for the practical implementation of the developed mathematical model, object-oriented programming in the Delphi environment is used. The results obtained are a comprehensive solution to an important scientific and applied problem of improving the reliability of technical systems, due to the recommendations developed as a result of complex electromagnetic diagnostics of the state of strategic power facilities. Product Description popup.authors popup.nrat_date 2020-04-02 Close