Title :
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
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;
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
DOI :
10.1109/ICHQP.2010.5625366
