Unifikace napětí DS na hladinu 22 kV v lokalitě Ostrava – Poruba

Abstract

This diploma thesis is focused on voltage unification of distribution system on level 22kV in Ostrava Poruba. Theoretical part of thesis contains brief description of electrical system calculation methods used for numerical solving of circuit equations. Hereafter there is description of program Daisy Bizon projektant, which is used for creating mathematical models of electrical systems and then use the model for easily calculate electrical quantities within variable system configurations. In practical part, there is described current state of distribution system with list of reasons, why is current state untenable and why is convenient to make a reconstruction of system and its unification on voltage level 22kV. Hereafter is described model of distribution system in program Bizon projektant. This model is used for calculation of current consumption, voltage levels and losses. Based on this model, there is proposal of system reconstruction procedure. Model is used for verifying, if allowed voltage drop or current consumption is not exceeded. Finally, there is estimation of investment costs and summarize of system reconstruction benefits.