On the assessment of voltage unbalance

Author

Seiphetlho, T.E. ; Rens, A.P.J.

Author_Institution

Sch. for Electr., Electron. & Comput. Eng., North West Univ., Potchefstroom, South Africa

fYear

2010

fDate

26-29 Sept. 2010

Firstpage

1

Lastpage

6

Abstract

The management of voltage unbalance in a power system is supported by the knowledge on the contribution of a single unbalanced load/source to the total level of voltage unbalance observed at a Point of Common Coupling (PCC) in an interconnected power system with unbalanced loads distributed all over. The theoretical requirements to solve this problem are investigated in this paper. The flow of active and reactive energy in the fundamental frequency sequence components is studied by means of simulation studies. The correlation of various unbalanced loading conditions with the voltage unbalance factor at the PCC is reported and the possibility in the practical application of a single-point measurement method in the assessment of the unbalance is then discussed based on the results obtained.

Keywords

power supply quality; power system interconnection; active energy flow; fundamental frequency sequence components; interconnected power system; point of common coupling; power quality; power system; reactive energy flow; voltage unbalance assessment; Correlation; Impedance; Load modeling; Loading; Reactive power; Voltage measurement; Negative sequence fundamental frequency active and reactive power; voltage asymmetry; voltage unbalance;

fLanguage

English

Publisher

ieee

Conference_Titel

Harmonics and Quality of Power (ICHQP), 2010 14th International Conference on

Conference_Location

Bergamo

Print_ISBN

978-1-4244-7244-4

Electronic_ISBN

978-1-4244-7245-1

Type

conf

DOI

10.1109/ICHQP.2010.5625366

Filename

5625366