A Study of the Occurrence of Resonance under the Influence of Dynamic Forces on the Structural Elements of Electrical Installations

The increase in the levels of short-circuit currents power system Republic Belarus requires study parameters electrodynamic stability main structural elements electrical installations with flexible conductors. In case a short circuit network, tenfold exceeding rated one hundreds times can flow through current-carrying part device. When magnetic fields formed by these interact, significant electromagnetic forces arise, which have destructive effect both on parts themselves and installations, viz. support insulators, switching devices, measuring equipment. movement wires mode leads to appearance dynamic loads them, which, turn, are transmitted portals, insulators devices. A topical problem is occurrence unacceptable mechanical that cause their destruction. Thus, analysis physical geometric dimensions busbar switchgear shows violation condition resistance tension unlikely due high strength large-section steel-aluminum used. At same time, span-limiting other devices significantly lower permissible bending loads. exposed forces, conductors bend transfer load certain elasticity. reliable determination loads, taking into account acting supporting structures, possible only if task set. article describes methods mathematical modeling computational experiment for analyzing electro-dynamic determined using coefficients depend natural frequencies oscillations nature changes over time. To solve problems, models compiled boundary value problems formulated calculating elements, coincidence forced probable vibrations elements.