A MATHEMATICAL MODEL OF MODERNIZATION OF THE OSH THERMAL AND ELECTRICAL CENTER IN THE SELECTION OF SWITCHGEAR EQUIPMENT

Abstract

In this paper, the subject of research is the process of modernization of the Osh Thermal and Electrical Center, engineering calculations and selection of equipment based on the calculation of short circuits. The purpose of the study is to develop a mathematical model for the modernization of the Osh Thermal and Electrical Center when choosing switchgear equipment. Two reasonable variants of the structural scheme of the Osh heat and Electric center are considered. To solve the problem, the following tasks were performed: drawing up technically possible variants of the block diagram and a reasonable choice of the best suitable one, taking into account reliability; evaluation of new structural schemes of the Osh Thermal and Electrical Center using calculation and comparison of technical and economic indicators; the values of the super-transient current in places of short circuit, shock current and its effective values are determined; selection of new equipment according to the values of the short circuit current. As a result, the test of the switch for thermal and dynamic resistance to short-circuit currents was analyzed; as the test of the switch for disconnecting and switching capacity. Work was carried out on the study of practical calculation methods and the development of a mathematical model of the electromechanical transient process using the example of calculating short circuits during the modernization of the Osh Thermal and Electrical Center.