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Information × Registration Number 0223U002272, 0120U105257 , R & D reports Title Increasing energy efficiency of arcs steel-making furnace of foundry class popup.stage_title Head Kollarov Oleksandr Yu., Кандидат технічних наук Registration Date 14-02-2023 Organization State Higher Educational Institution "Donetsk National Technical University" popup.description2 The purpose of this scientific work consists in the following provisions: – Improvement of mathematical models of electrical network elements in order to increase the accuracy of calculations of constant and transient processes in electrical networks. – Refinement of methods for taking into account asymmetric modes, as well as improvement of the algorithm for modeling switching transient overvoltage’s. - Implementation of the researched results in practice with the aim of increasing reliability indicators in the operation of power grids. The object of research are the processes of electricity transmission in the power grid from the power supply system to the load - electric machines, through power transmission lines and power transformers. To solve the task in the work, it is suggested to perform the following main stages: - Analysis of existing mathematical models of electrical network elements, taking into account their asymmetry: electric machines, power transmission lines and power transformers. With the help of this analysis, establish the shortcomings of the currently available technical solutions in this topic. – Determination of the main ways to improve mathematical models of electrical network elements. – Improvement of mathematical models of electrical network elements taking into account their asymmetry. – Obtaining equations that describe the current state of electrical network elements. – Construction of an improved mathematical model of the electrical network section. - Justification of the feasibility of the proposed equations of the power grid elements. - Carrying out a comparative analysis of switching transient overvoltages with various schemes for replacing elements of power networks. Implementation of the received theoretical provisions for the analysis of overvoltage values in operating electrical networks. Comparative analysis of the obtained data. Conclusions regarding the work performed. Product Description popup.authors Kollarov Oleksandr Niemtsev Eduard Ostrenko Dmytro Skrypnyk Savelii popup.nrat_date 2023-02-14 Close