Simple, fast detector for voltage dip or voltage swell

2007 ◽  
Vol 43 (4) ◽  
pp. 245 ◽  
Author(s):  
K.M. Tsang ◽  
W.L. Chan
2021 ◽  
Author(s):  
Ghanta Devadasu ◽  
S. Muthubalaji ◽  
N. Vijaya Anand ◽  
Shaik Mohammad Rafee
Keyword(s):  

Author(s):  
Oluwaseun Elijah Adegbite ◽  
M. O. Okelola

The effect of the Power Quality events can be devastating if not properly managed. To manage such PQ events effective detection and classification techniques must be developed. There are various mathematical models that can be used in the detection and classification of the events which could vary from Dip, Swell, Interruption, and Harmonic distortion. The paper is based on the classification of Voltage Dip, Voltage Swell and Voltage Interruption using the STFT as the method of the detection of the triggering point and using such synthetic signal to train the Naïve Bayes classifier to develop a classifier that is capable of classifying waveform signals that has such disturbances in them.


2015 ◽  
Vol 16 (5) ◽  
pp. 421-429 ◽  
Author(s):  
Fernando Belchior ◽  
Thiago Moura Galvão ◽  
Paulo Fernando Ribeiro ◽  
Paulo Márcio Silveira

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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