Rekonstrukce přívodů rozvodny Válcovna AB 6 kV v Třineckých železárnách, a. s.

Abstract

The subject of the thesis "Power Supply Reconstruction of Substation Valcovna AB 6 kV in Trinecke zelezarny" is to analyze the present state and to design new solutions according to client requirements. Part of the reconstruction is the replacement of three power transformers, cable management and the reconstruction of incoming substation cells. After the theoretical analysis of industrial distribution, short-circuit current and protection device were proposed new power transformers, cable management. In addition, short-circuit conditions were verified and single-line diagrams of substations T2 22 kV and Valcovna AB 6 kV, draft of environment protokol, exemplary controlling switchboard, design of incoming substation cells, site drawing of substation and cable lines were drawn. Short-circuit current calculations were verified in the scripting language Python.