Verification of a calibration system for power quality instruments

1998 ◽  
Vol 47 (5) ◽  
pp. 1391-1394 ◽  
Author(s):  
S. Svensson
Keyword(s):  
Power Quality ◽  
Calibration System ◽  
Quality Instruments

Research on multi-function power quality calibration system

2009 ◽  
Author(s):  
Lingling Hao ◽  
Lusheng Ge ◽  
Zhongjuan Wang ◽  
Zhijie Chen ◽  
Lin Shu
Keyword(s):  
Power Quality ◽  
Calibration System

Comparative Analysis of Power Quality Instruments in Measuring Power under Distorted Conditions

2015 ◽  
Vol 16 (5) ◽  
pp. 421-429 ◽  
Author(s):  
Fernando Belchior ◽  
Thiago Moura Galvão ◽  
Paulo Fernando Ribeiro ◽  
Paulo Márcio Silveira
Keyword(s):  
Power Quality ◽  
Electrical Power ◽  
Current Source ◽  
Harmonic Distortion ◽  
Phase Voltage ◽  
Voltage Dip ◽  
Three Phase ◽  
Voltage Swell ◽  
Almost All ◽  
Quality Instruments

Abstract This paper aims to evaluate the performance of commercial power quality (PQ) instruments. By using a high precision programmable voltage and current source, five meters from different manufacturers are analyzed and compared. At first, three-phase voltage signals are applied to those PQ instruments, considering harmonic distortion, voltage dip, voltage swell, as well as unbalanced voltages. These events are measured, compared and evaluated considering the different instruments. In addition, voltage and current signals are applied under different conditions, with and without harmonic and unbalances, in order to obtain the measurements of electrical power. After analyzing the data generated in all these tests, efforts are focused on establishing a relationship between the accuracy of the measurements. Considering the percentages of errors, a score is assigned to each instrument. The tests have shown “excellent” and “good” results regarding measuring active and apparent power, as well as power factor. However, for non-active power, almost all instruments had lower performance. This work is relevant considering that Brazil is deploying standardization in terms of power quality measurements aiming towards regulatory procedures and index limits.

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