Výpočet poruchových proudů v elektrické distribuční síti s využitím softwarové podpory

Abstract

Diploma Thesis follows up fault currents in electrical network caused by short circuit or ground connection. In selected locations of the VŠB-TUO local distribution network, these faults are subsequently simulated for the purpose of analyzing short-circuit ratios, or current at ground connection respectively. For investigation of fault currents changes, several connections of network are selected. Two metods are used for getting results, namely manual calculation using equations in ČSN EN 60909-0 standard and using DNCalc software, the results are subsequently compared. The second part of thesis contains proposal of variant tasks, which can be used for teaching in this issue and practicing working with the DNCalc software. Instructions how to model the network and get results in DNCalc software are included. Basic concepts and the most importants facts about resolved issues are described in theoretical part of the thesis.