138 kV 12-phase as an alternative to 345 kV 3-phase
Recent high phase order reserch has resulted in a 138 kV (phase-to-ground) 12-phase line design which is a realistic alternatice to 345 kV 3-phase transmission. This paper presnts the results of an experimental and analytical program which included construction of a 12-phase steel lattice portal tower special insulators, consttruction of a 12-phase substation, and subsequent energization of the world's first 12-phase power transmission line. Impedences, electrical environmental effects (radio noise, audible noise, and electric fields) are among the parameters measured and evaluated. This 12-phase design is compared with sevral existing 345 kV 3-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 3-phase at other voltage levels. 9 refs., 13 figs., 2 tabs.
- Research Organization:
- Power Technologies, Inc., Schenectady, NY (USA); Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5361970
- Report Number(s):
- CONF-880433-4; ON: DE88007005
- Resource Relation:
- Conference: Southeastcon '88 conference and exhibit, Knoxville, TN, USA, 11 Apr 1988
- Country of Publication:
- United States
- Language:
- English
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