Výpočet zkratových proudů a návrh nových prvků rozvodny R2 - 6kV.

Abstract

This thesis describes the design of reconstruction of the industrial company. In his theoretical chapters deals with not only the analysis of the types of industrial networks , but also demands to the industrial distribution or nominal voltages used in industry. Included is also a description of the methodology of calculation of short-circuit currents according to norm ČSN 60909. The beginning of practical part this thesis deals with the descriptions of the solutions substation and also with calculating the initial short-circuit current and peak short-circuit current for several variations of the power supply. Based on these values are designed disconnectors, circuit breakers , instrument transformers and protection for every cubicle of substation always from more supplier companies. In conclusion, all of these options are compared and selected according to the criteria most suited solution.