High Phase Order Transmission--A Feasibility Analysis Part I--Steady State Considerations

Abstract

High phase order transmission (HPO), the use of more than the conventional three phases, is a unique approach to more efficiently using the overhead transmission rights-of-way. This paper addresses definition of system voltage nomenclature; steady state system operation as affected by transmission line impedances; line and generator current unbalance; and the electrical environmental aspects of radio noise, audible noise, and electric fields at ground level. Quantitative results for these areas are compared to representative 3-phase conditions.