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

fYear

1988

fDate

11-13 Apr 1988

Firstpage

258

Lastpage

263

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '88., IEEE Conference Proceedings

Conference_Location

Knoxville, TN

Type

conf

DOI

10.1109/SECON.1988.194855

Filename

194855