Simple, fast detector for voltage dip or voltage swell

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.

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Compensation of Voltage Dip and Voltage Swell by Dynamic Voltage Restore Using Synchronous Reference Frame Theory

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2018.4113 ◽

2018 ◽

Vol 6 (4) ◽

pp. 661-668

Author(s):

A. Naveen Teja

Keyword(s):

Reference Frame ◽

Frame Theory ◽

Voltage Dip ◽

Synchronous Reference Frame ◽

Dynamic Voltage ◽

Voltage Swell

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

International Journal of Emerging Electric Power Systems ◽

10.1515/ijeeps-2015-0042 ◽

2015 ◽

Vol 16 (5) ◽

pp. 421-429 ◽

Cited By ~ 3

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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