ОЦЕНКА ВЛИЯНИЯ БАЛАНСА МОЩНОСТЕЙ НА РЕЗУЛЬТИРУЮЩУЮ УСТОЙЧИВОСТЬ ГЕНЕРАТОРОВ С УЧЕТОМ РЕКОНСТРУКЦИИ В АВАРИЙНЫХ И ПОСЛЕАВАРИЙНЫХ РЕЖИМАХ ПРИМЕНИТЕЛЬНО К ЭНЕРГЕТИЧЕСКОМУ УЗЛУ ПРЕДПРИЯТИЯ ЧЕРНОЙ МЕТАЛЛУРГИИ

Abstract

Relevance For stable operation of electrical equipment of power supply systems of industrial enterprises, it is necessary to evaluate and present measures that will solve the set tasks in an integrated manner. Thus, there is a need to assess the resulting stability when introducing new generating capacities in emergency and post-emergency modes, taking into account unbalanced capacities. The object of the study is a power hub characterized by a complex configuration with a voltage class from 0.4 to 500 kV and contains its own generation sources. The main consumer of which is the largest producer of ferrous metallurgy. Aim of research The aim of the work is to determine the influence of the power balance on the resulting stability of generators in emergency and post-emergency modes. Research methods To achieve this goal, an algorithm has been developed, which is the basis of the KATRAN program complex. Results This algorithm makes it possible to study the short-circuit elimination mode with separation from the power system as a result of relay protection and automation action with determination of the power unbalance share. According to the results of the work, power areas with violation of the resulting stability of synchronous machines and the resulting power unbalance, allocated as a result of the short circuit, were identified, which allowed to issue additional recommendations on connecting loads in the network or their disconnection in emergency mode. The obtained recommendations will allow to increase the reliability of power supply of the enterprise in order to increase the volume and quality of manufactured products.