Voltage variations identification using gabor transform and rule-based classification method

Tee, Weihown; Yusoff, M.R.; Yaakub, Muhamad Faizal; Abdullah, Abdul Rahim

doi:10.11591/ijece.v10i1.pp681-689

Cited by 3 publications

(4 citation statements)

References 29 publications

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“…As a result, the value cannot be lower than 0.95, also it cannot be higher than 1.05. 0.95 ≤ 𝑉 𝐿 ≤ 1.05 (13) The THD of the voltage (THD v ) of the second feeder, given by ( 14), should be below its maximum value (𝑇𝐻𝐷 𝑉.𝑚𝑎𝑥 )as shown in (15) reported in IEEE standard 519,…”

Section: The Imposed Constraintsmentioning

confidence: 99%

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Mitigation of voltage sag and voltage swell by using dynamic voltage restorer

Mattar,

Mahmoud,

El-Sayed

2024

IJPEDS

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Recent power quality (PQ) research shows that the most common types of power quality disturbances are voltage sags and swells in medium and low-voltage distribution grids. This paper shows how to improve two significant power quality disturbances: sags and swells voltage. To find out what effect these two PQ issues have in real life, a study case based on real nonlinear loads data from large induction motors at Beshai Company in Sadat City in Egypt is investigated. The dynamic voltage restorer (DVR) has been suggested as a solution to the voltage swell and voltage sag issues. The point of common coupling (PCC) is linked with the dynamic voltage restorer to mitigate the PQ problems that have been found. The power network, loads, and DVR may all be modeled using the MATLAB/Simulink platform. The jellyfish search optimizer (JFS) is used to get the gain settings of the proportional and integral (PI) controller for the proposed DVR. MATLAB/Simulink's results show that the proposed device is effective, reliable, and has low latency.

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Section: The Imposed Constraintsmentioning

confidence: 99%

“…Gabor transform (GT) [15] discussed a method and a technique to detect and classify the disturbance waveforms respectively. That it can be performed by other time-frequency analysis techniques to acquire the features.…”

mentioning

confidence: 99%

Mitigation of voltage sag and voltage swell by using dynamic voltage restorer

Mattar,

Mahmoud,

El-Sayed

2024

IJPEDS

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“…Simple decision trees are used in the classification of multiple PQDs [42, 49, 66, 70, 75, 77, 85-87, 89, 96-99, 101, 102, 109, 114, 117, 118, 128]. Some variants such as random forest [102,105,112,126] and bagging predictor [97,98] and rule-based classifiers [72,80,91,122], have been also used in the literature for multiple PQD classification. Rule-based classifiers are also used in [140,151,152] for voltage sag classification and in [200] for voltage notches, whereas decision trees are used in ensemble models as weak classifiers in combination with other methods [185] for voltage sag classification.…”

Section: Decision Treesmentioning

confidence: 99%

A systematic review of real-time detection and classification of power quality disturbances

Navarro

Agudelo-Martínez²,

Trujillo

et al. 2023

Prot Control Mod Power Syst

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This paper offers a systematic literature review of real-time detection and classification of Power Quality Disturbances (PQDs). A particular focus is given to voltage sags and notches, as voltage sags cause huge economic losses while research on voltage notches is still very incipient. A systematic method based on scientometrics, text similarity and the analytic hierarchy process is proposed to structure the review and select the most relevant literature. A bibliometric analysis is then performed on the bibliographic data of the literature to identify relevant statistics such as the evolution of publications over time, top publishing countries, and the distribution by relevant topics. A set of articles is subsequently selected to be critically analyzed. The critical review is structured in steps for real-time detection and classification of PQDs, namely, input data preparation, preprocessing, transformation, feature extraction, feature selection, detection, classification, and characterization. Aspects associated with the type of disturbance(s) addressed in the literature are also explored throughout the review, including the perspectives of those studies aimed at multiple PQDs, or specifically focused on voltage sags or voltage notches. The real-time performance of the reviewed tools is also examined. Finally, unsolved issues are discussed, and prospects are highlighted.

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“…As most of the industries are automated, the entire operation of the industries depends upon the operating condition of these sensitive loads. When sag or swell occurs in the industrial areas, these sensitive loads are getting affected, leading to immoral operation of the entire industry [1][2][3][4][5][6][7][8]. For the compensation of voltage sag, Dynamic Voltage Restorer (DVR) considered to be an effective device when compared to other devices like UPS, STATCOM [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Voltage sag compensation using direct converter based DVR by modulating the error signal

Rahman¹,

Dagnew²

2020

IJEECS

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<p class="Text"><span>The aim of this paper is to present a modulation technique to achieve highest voltage sag compensation using direct converter based dynamic voltage restorer (DVR). The DVR topology proposed in this paper, has a direct converter and a series transformer. The direct converter is fabricated using only two bi-directional switches. The DVR is designed to compensate the sag in a phase by taking power from the same phase. The direct converter is connected between the series transformer and the line in which sag compensation is to be achieved. Conventionally, the PWM pulses for the direct converters are produced by comparing the error signal with the carrier signal. The error signal is obtained by comparing the amplitude of voltage in the line with the amplitude of the reference voltage. If the amplitude of the carrier signal is kept constant and the actual amplitude of error signal is used for PWM generation, it is possible to achieve only 22% of voltage sag compensation. But if the error signal amplitude is modulated according to the amplitude of existing voltage sag in the line, 52% of the voltage sag can be compensated with the THD less than 5%. Simulation results are presented for validating the analysis. </span></p>

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Voltage variations identification using gabor transform and rule-based classification method

Cited by 3 publications

References 29 publications

Mitigation of voltage sag and voltage swell by using dynamic voltage restorer

Mitigation of voltage sag and voltage swell by using dynamic voltage restorer

A systematic review of real-time detection and classification of power quality disturbances

Voltage sag compensation using direct converter based DVR by modulating the error signal

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