Towards interval analysis of the load uncertainty in power electric systems

Author

Barboza, Luciano V. ; Dimuro, Gra?§aliz P. ; Reiser, Renata H S

Author_Institution

Electr. Eng. Dept., Catholic Univ. of Pelotas, Brazil

fYear

2004

Firstpage

538

Lastpage

544

Abstract

The aim of this paper is to present a methodology based on interval mathematics to deal with load uncertainty in power electric systems. The approach is suitable to model two types of uncertainty in power flow analysis, namely: (i) the influence of the load measurement errors at all system buses on the voltage profile; (ii) the voltage profile behavior under a load variation during a specific period of time. This methodology entails an interval power flow model and the resulting interval nonlinear system is solved using Krawczyk´s method. We implemented the algorithm in the Matlab environment using the IntLab toolbox. Results for IEEE test-systems and a comparison with related work are presented.

Keywords

IEEE standards; load flow; mathematics computing; nonlinear systems; power system economics; power system measurement; power system reliability; uncertain systems; IEEE test-systems; IntLab toolbox; Krawczyk algorithm; Matlab; electric power system; interval mathematics; load measurement errors; load uncertainty; load variation; nonlinear system; power flow analysis; Load flow; Load flow analysis; Load management; Mathematical model; Mathematics; Measurement errors; Power system modeling; System buses; Uncertainty; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Probabilistic Methods Applied to Power Systems, 2004 International Conference on

Print_ISBN

0-9761319-1-9

Type

conf

Filename

1378745