Study of medium equipment for Siemens Gas Turbines

Abstract: This report is the result of a thesis performed at Siemens Industrial Turbomachinery AB which has many years of experience in the business of power generation. Normally the medium voltage equipment to the gas turbine is not supplied by Siemens. This type of equipment is usually delivered by other suppliers since Siemens do not have the basis of the medium voltage equipment in the actual delivery. The aim of the thesis was to investigate and find an overall solution for two typical examples for the delivery of the medium voltage equipment for the gas turbine SGT-600 and SGT-700. The result of the study contains protection equipment, dimension and options of equipment. The scope of this work contains two solutions for both gas turbines. The first solution is the net of 10,5kV, 50Hz and the other solution is the net of 13,8kV, 60Hz.