Ranking of line outages in an AC-DC system causing overload and voltage problems

Author

Bijwe, P.R. ; Nanda, J. ; Puttabuddhi, K.L.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., New Delhi, India

Volume

138

Issue

3

fYear

1991

fDate

5/1/1991 12:00:00 AM

Firstpage

207

Lastpage

211

Abstract

An efficient noniterative method for ranking line outage contingencies in an AC-DC system based on overload and voltage deviation performance indices is developed. The method is based on the calculation of complex line outage current compensations using a coupled AC-DC load flow Jacobian matrix. The proposed method is further extended for the calculation of line outage distribution factors which could be very useful for reducing the computational burden in security constrained optimisation problems. A mathematical model for handling bus-type switching resulting from reactive power limit violations is also developed. Results for a modified IEEE 14-bus system have been obtained with the proposed method and are compared with those obtained by rigorous AC-DC load flow

Keywords

load flow; optimisation; power systems; AC-DC system; IEEE 14-bus system; bus-type switching; coupled AC-DC load flow Jacobian matrix; line outage contingency ranking; outage current compensations; overvoltage performance indices; reactive power limit; security constrained optimisation; voltage deviation performance indices;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings C

Publisher

iet

ISSN

0143-7046

Type

jour

Filename

75456