Návrh metodiky stanovení odpovídajícího modelu trojvinut'ových autotransformátorů dle typu konstrukce pro výpočty chodu sítě a zkratů

Abstract

This master degree work deals with the modelling of autotransformers. Firstly, the behaviour of autotransformers and, mainly, their division according to the type of construction are described. In the next section there is a design of methods of modelling autotransformer in different softwars. Here you can find simulation of short-circuit test in softwars EMTP-ATP, SIMULINK and ENERGY CS, and the model of autotransformers or short-circuit by zero-sequence impedance experiment. The methodology of autotransformer modelling and relations which is used for calculations of substitute impedances is explained here. The second half of the work deals with practical experiments. Firstly, the model of electrical network, contained autotransformers. The next chapter describe calculation of steady state of network in selected softwars. The final part of the work contains examples of calculating short-circuit currents in different parts of network.