Title :
138 kV 12-phase as an alternative to 345 kV 3-phase
Author :
Stewart, James R. ; Hudson, Thomas L.
Author_Institution :
Power Technol. Inc., Schenectady, NY, USA
Abstract :
The results are presented of an experimental and analytical program which included construction of a 12-phase steel lattice portal tower with special insulators, construction of a 12-phase substation, and subsequent energization of the first 12-phase power transmission line. Impedances, electrical environmental effects (radio noise, audible noise, and electric fields) are among the parameters measured and evaluated. This 12-phase design is compared with several existing 345-kV three-phase lines for thermal and surge impedance loading, electrical environmental effects and physical size requirements. The 12-phase design offers comparable loading in less space with reduced electrical environmental impact. This is illustrative of the possibilities of high phase order as a replacement for three-phase at other voltage levels
Keywords :
insulators; poles and towers; power overhead lines; substations; 12-phase power transmission line; 12-phase steel lattice portal tower; 12-phase substation; 138 kV; audible noise; electric fields; electrical environmental effects; impedances; insulators; physical size requirements; radio noise; surge impedance loading; Acoustic noise; Impedance; Insulation; Lattices; Poles and towers; Portals; Power transmission lines; Steel; Substations; Working environment noise;
Conference_Titel :
Southeastcon '88., IEEE Conference Proceedings
Conference_Location :
Knoxville, TN
DOI :
10.1109/SECON.1988.194855
