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Calculation of earth current distribution in OpenDSS
Capyk, Jan ; Koudelka, Jan (referee) ; Vyčítal, Václav (advisor)
The thesis deals with the ground current distribution in electrification systems. The first part introduces the reader to the electrical parameters of distribution system elements and options of their calculation. Various factors and environmental influences that can affect the parameters of individual network elements are described using graphics dependencies. The second part of the thesis describes the creation of a network model in the OpenDSS program, which is an integral part of the study in question used to make complex calculations for the given issue. Furthermore, this part contains created models of distribution networks at voltage levels of 110 and 0.4 kV on which individual simulations are performed, including a single-phase fault. These network models are used to observe the effects on the magnitude of current distribution through the grounding system, grounding wires and the PEN conductor, in connection with changes in the arrangement of conductors on masts, with changes in wiring, etc. Finally, the obtained simulation values are compared with theoretical assumptions and evaluated.
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