The feasibility of supplying a large, sparsely loaded area at 22 kV

Author

Williamson, A.R.F. ; van der Merwe, W.C. ; le Roes, G.S.

Author_Institution

ESKOM, Johannesburg, South Africa

fYear

1992

fDate

22-24 Sep 1992

Firstpage

240

Lastpage

242

Abstract

The results of transient and steady-state studies into the feasibility of an extended 22 kV distribution system are presented. The study relates to the need to supply farming communities on the Molopo River with electricity. The feasibility of using the existing Wessels 66 kV/22 kV substation was investigated. The proposed scheme requires a 22 kV backbone of over 300 km, and tee-offs which bring the total length of line to over 1000 km. The installed capacity will be approximately 4 MVA, but the anticipated maximum demand is only one third of this figure. All studies were performed using the PSS/U program of Power Technologies Incorporated, running on an IBM PC-AT. It is concluded that, provided the loading of the system is neither too low nor too high, the system will perform adequately

Keywords

distribution networks; 22 kV; 4 MVA; 66 kV; Computer Simulation; IBM PC-AT; PSS/U program; South Africa; backbone; distribution system; farming communities; feasibility; installed capacity; loading; maximum demand; power systems planning; rural power supply; steady-state; tee-offs; transient; Africa; Conductors; Costs; Regulators; Rivers; Spine; Steady-state; Substations; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON '92 Proceedings., 3rd AFRICON Conference

Conference_Location

Ezulwini Valley

Print_ISBN

0-7803-0835-2

Type

conf

DOI

10.1109/AFRCON.1992.624463

Filename

624463