Time-varying power quality in unbalanced three-phase systems

2013 ◽  
Author(s):  
T. Zafar ◽  
S. Talwar ◽  
M. Gray ◽  
W. G. Morsi
Keyword(s):  
Power Quality ◽  
Time Varying ◽  
Three Phase ◽  
Phase Systems

scholarly journals Continuous Harmonic Analysis and Power Quality Measurements in Three-Phase Systems

2003 ◽  
Vol 1 (01) ◽  
pp. 476-481
Author(s):  
J.C. Montaño ◽  
◽  
A. López ◽  
J. Gutiérrez ◽  
M. Castilla ◽  
...  
Keyword(s):  
Harmonic Analysis ◽  
Power Quality ◽  
Three Phase ◽  
Phase Systems ◽  
Quality Measurements

Comparative Analysis of Instruments Measuring Time Varying Harmonics

2016 ◽  
Vol 17 (4) ◽  
pp. 463-469
Author(s):  
Fernando Nunes Belchior ◽  
Paulo Fernando Ribeiro ◽  
Frederico Marques Carvalho
Keyword(s):  
Comparative Analysis ◽  
Power Systems ◽  
Power Quality ◽  
Current Source ◽  
Harmonic Distortion ◽  
Time Varying ◽  
Phase Voltage ◽  
Measuring Time ◽  
Class A ◽  
Three Phase

Abstract This paper aims to evaluate the performance of commercial class A and class S power quality (PQ) instruments when measuring time-varying harmonics. By using a high precision programmable voltage and current source, two meters from different manufacturers are analyzed and compared. Three-phase voltage signals are applied to PQ instruments, considering 3 situations of time-varying harmonic distortions, whose harmonic distortion values are in accordance with typical values found in power systems. This work is relevant considering that international standardization documents do not pay much attention to this aspect of harmonic distortion.

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