SF6 or air insulated 400 kV substation of block 6 Thermal power plant Šoštanj

V magistrskem delu je prikazana izvedba in praktični primer sodobnega visokonapetostnega 400 kV zračno in s plinom SF6 izoliranega stikališča. Predstavljene so naprave novega bloka 6 Termoelektrarne Šoštanj. V nadaljevanju je prikazana in argumentirana idejna zasnova stikališča za blok 6 s primerjavo med zračno izolirano in plinsko izolirano izvedbo. Glede na karakteristike energetske opreme bloka 6 in analize sosednjih stikališč so bili opravljeni ustrezni izračuni kratkostičnih razmer. Na osnovi teh izračunov je bila izbrana ustrezna oprema zračno in s plinom SF6 izoliranega stikališča. Za takšni izvedbi stikališč so bili izvedeni izračuni vplivov na okolje. Analizirana je bila tudi vključitev omenjenih stikališč v elektroenergetski sistem na osnovi analize z zanesljivostnim kriterijem "n-1" in izračunom obremenljivosti za več variant vključitve bloka 6 v elektroenergetski sistem.Implementation and a practical example of high-voltage 400 kV air and gas SF6 insulated substation are shown in this master’s thesis. Different devices of the new block 6 of the thermal power plant Šoštanj are presented. The switching substation for block 6 in comparison with air insulated and gas insulated performance is argumentatively presented in the continuation. According to the block 6 energy equipment characteristics and adjoining switching substation analysis suitable calculations are made for short-circuit circumstances. On the basis of these calculations suitable equipment for air and gas SF6 insulated substation is chosen. For this kind of performances environmental effect calculations are made as well. Inclusion of the above mentioned switching substation in electrical power system is analysed in the thesis. Analysis of different varieties for block 6 inclusions in the electrical power system is made with reliable criteria “n-1” and the calculation of load in a system