D. I. Khvalin
Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 12, Lysohirska st., Kyiv, 03028, Ukraine
DOI: doi.org/10.31717/2311-8253.25.2.4
Abstract
Taking into account the reliability and economy of manufacturing designs for different power turbogenerators, the permissible limits of application for their cooling systems is determined. It is shown that the increase in turbogenerator power with increasing degree of material use occurs not only due to new auxiliary systems for cooling intensification, but also due to a 44 ISSN 2311-8253 Nuclear Power and the design complication of the main units, accompanied by the appearance of specific defects of these units inherent in the presence of a certain cooling system. Based on the analysis of operational data, indicators of reduced
reliability of turbogenerators using more complex design solutions for cooling intensification are obtained. The achievements of modern electrical engineering industry in developing high-power energy equipment
with direct water cooling of windings and active steel have created opportunities for improving generators design with air and air-water cooling based on the use of the most effective direct cooling systems, new types of insulation with increased mechanical and electrical strength, electrical steel with reduced specific losses, modern structural materials. Technical possibilities for replacement of turbogenerators at nuclear poweer plant units in Ukraine with domestically manufactured ones with non-hydrogen cooling system that allow increasing reliability of power plants and ensuring fire and explosion
Keywords: nuclear power plant, power unit, powerful turbogenerator, design, cooling system, reliability, safety
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