Title :
Watthour meter accuracy under controlled unbalanced harmonic voltage and current conditions
Author :
Domijan, A., Jr. ; Embriz-Santander, E. ; Gilani, A. ; Lamer, G. ; Stiles, C. ; Williams, C.W., Jr.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
fDate :
1/1/1996 12:00:00 AM
Abstract :
This work presents the results of phase I of the project on the accuracy of watthour meters when subjected to closely-duplicated real-world unbalanced harmonic voltage and current conditions. Such real-world conditions involved differences in voltage and current magnitudes as well as differences in the voltage and current total harmonic distortion levels of each phase. Tests were performed on a selected sample of nine three-phase and three single-phase watthour meters. Some results showed that under a particular set of unbalanced waveforms with harmonic conditions of ITHD>80% and VTHD>2%, the percentage errors exhibited by these meters ranged from -10.09% to +0.52%
Keywords :
computerised instrumentation; harmonic distortion; monitoring; power system harmonics; power system measurement; testing; watthour meters; controlled unbalanced harmonic voltage; harmonic conditions; single-phase watthour meters; three-phase watthour meters; total harmonic distortion levels; unbalanced harmonic current; unbalanced harmonic voltage; unbalanced waveforms; watthour meter accuracy; Flexible printed circuits; Performance evaluation; Power measurement; Power quality; Power system harmonics; Reactive power; Testing; Total harmonic distortion; Voltage control; Watthour meters;
Journal_Title :
Power Delivery, IEEE Transactions on
