I might suggest REA Bulletin 65-2 April 1978 Evaluation of large power transformer losses. This guide steps you through the process in determining cost of ownership of the transformer due to losses. You will have to refer to the transformer test data but typically losses are expresed in terms...
Try WWW.Powerline.com they have software called PLS-CADD/LOADS that performs thermal ratings of OH line conductors. Also the old Westinghouse T&D Manual goes through calculations using Schurig and Frick formulas to determine thermal rating of bare OH lines.
I would agree with Peterb above in using a consultant here, a packager could be helpful in steel procurement and some design though I don't think they get to much into site specific design like ground grid, control house and general site layout. Additionally 69 kv is typically the a standard US.
Sorry I miss read the original post and thought the HV winding was Wye connected. In regards to the winding losses being favorable for rectangular windings than circular I don't understand. This will depend a lot on the winding ability to dissipate heat, and with rectangular windings there is...
There are huge cost differences between rectangular and circular core transformers. Additionally rectangular wound transformer will not meet ANSI/IEEE standards in regards to the percent allowable change in transformer impedance after a fault. ABB claims that they have a transformer design...
Try Transmission Line Reference Book, 115-138 kV compact line design. Other transmission line reference books are also available for 345 kV and above as well as HVDC to 600 kV. These are EPRI books and are based on research they have done.
Try IEEE 605-1998, Guide for Design of Substation Rigid Bus Structures, or Aluminum Electrical Conductor Handbook Chapter 13 covers Bus Conductor Design.
IEEE80 Paragraph 12.6, Concrete-Enchased Electrodes, discusses advantages and disadvantages. In substation applications we choose not to ground reinforcing due to high currents vaporizing the moisture in the concrete.
The REA guide is probably the best one-stop guide to substation design available outside of taking a substation design course. Other good references would be IEEE Power & Engergy - Substation Standard, as well as the Power & Engergy - Switchgear Standard. The old Westinghouse T&D blue book is a...
