Transmission capacity assessment

Author

Obadina, O.O. ; Berg, G.J. ; Sharaf, T.A.M.

Author_Institution

Empros Syst. Int., Plymouth, MN, USA

Volume

18

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

105

Lastpage

110

Abstract

The problem of electric power transmission limitations due to finite reactive resources is studied. Maximum system load, i.e., loadability, is determined using a nonlinear optimization technique (Modified Augmented Lagrangian) which accommodates limits on reactive generation as well as other practical constraints. The sensitivities of the system loadability with regard to transmission-element primitive admittances are by-products of the proposed optimization method. These parameters indicate the relative strength of the transmission elements at the voltage stability limit. The weakest element is considered to be the one exhibiting the greatest sensitivity. Electrical strengthening of this element would enhance the system loadability. Sample results are presented for a 30-bus system.

Keywords

electric admittance; load (electric); optimisation; power system stability; power transmission; 30-bus system; electric power transmission; modified augmented Lagrangian technique; nonlinear optimization; primitive admittances; reactive generation; reactive resources; system load; transmission elements; voltage stability; Generators; Loading; Optimization; Power system stability; Reactive power; Sensitivity; Thermal stability;

fLanguage

English

Journal_Title

Electrical and Computer Engineering, Canadian Journal of

Publisher

ieee

ISSN

0840-8688

Type

jour

DOI

10.1109/CJECE.1993.6592924

Filename

6592924