Auxiliary Systems for 600-1,500-Mw 3,500-Psig Steam-Turbine-Generator Units

An investigation was made to determine economic design of steam station auxiliary systems for units of 600 to 1,500 mw (megawatts). The study is accomplished in two parts, both of which have the initial assumption that mechanical drive will be used for the main boiler feed pumps. Basic system configurations are used to determine switchgear duty, thus establishing necessary system voltages. This paper presents the methods used in the analysis, the limiting assumptions, and, finally, a comparison of costs of the various system designs.