A generalised methodology for evaluating voltage unbalance influence coefficients

Author

Paranavithana, P. ; Perera, Sarath ; Koch, Robert

Author_Institution

Univ. of Wollongong, Wollongong, NSW, Australia

fYear

2009

fDate

8-11 June 2009

Firstpage

1

Lastpage

2

Abstract

The recently released IEC Technical Report IEC/TR 61000-3-13 for voltage unbalance allocation requires quantitative measures of the propagation of voltage unbalance from one busbar to other neighbouring busbars of a sub-system in terms of influence coefficient. However, IEC/TR 61000-3-13 does not prescribe a method for their evaluation. This paper carries out preliminary studies in order to investigate the dependency of these influence coefficients on various load types/bases, and proposes a systematic method for estimating them. Proposed method is applied to a 3-bus MV test system and also to the IEEE 14-bus test system of which the results are verified using unbalanced load flow analysis. This new approach could be considered in future updates of IEC/TR 61000-3-13.

Keywords

IEC standards; busbars; load flow; power system faults; 3-bus MV test system; IEC Technical Report; IEC-TR 61000-3-13; IEEE 14-bus test system; busbar; unbalanced load flow analysis; voltage unbalance influence coefficients;

fLanguage

English

Publisher

iet

Conference_Titel

Electricity Distribution - Part 2, 2009. CIRED 2009. The 20th International Conference and Exhibition on

Conference_Location

Prague

Print_ISBN

978-1-84919-160-9

Type

conf

Filename

5371190