ANALYSIS OF ELECTROMAGNETIC TRANSIENTS IN SLOVENIAN POWER SYSTEM USING PROGRAM PACKAGE MATLAB/SIMULINK

Diplomsko delo obravnava dinamični model elektroenergetskega omrežja Slovenije, na katerem so priključeni odjemalci, proizvajalci in tuja omrežja. V programskem paketu MATLAB/Simulink je s knjižnico SimPowersys sestavljen dinamični model sistema, ki omogoča izračun obratovalnih stanj. V modelu so uporabljeni osnovni elementi elektroenergetskega sistema, kot so: tuje omrežje, generator, transformator, vodi, stikala ter porabniki električne energije. Ker se delež prenesene električne energije skozi elektroenergetski sistem Slovenije ves čas povečuje, je distribucijsko omrežje vedno bolj obremenjeno. Model omogoča izračun obratovalnih podatkov in temelji na izračunih pretokov energije, kar nam omogoča preverjanje obratovanja pri različnih scenarijih obratujočih elementov sistema.This work deals with the dynamic model of Slovenian power system (PS), in which models of loads, all main power plants, and connections with the neighboring power systems are considered. Dynamic model of PS was built in program package MATLAB / Simulink using the module SimPowersys, which enables calculations of operating conditions. The model of PS contains only simplified models of generators, transformers, loads, switches and distribution networks. Because of constant increase of electric energy transfer through Slovenian power system, the distribution system is being overloaded. The dynamic model enables calculations of operating conditions and is based on calculation of energy flow, which allows testing of PS operation under various operating conditions of individual PS elements