Voltage THD Analysis Using Knowledge Discovery in Databases With a Decision Tree Classifier

“…To boost the DVR's dynamic performance, it is therefore required to upgrade the control system. Equation ( 29) yields the value of %THD of the voltage (THD V ) [61].…”

Section: Scenario A: V S Alleviationmentioning

confidence: 99%

Voltage Quality Enhancement of Low-Voltage Smart Distribution System Using Robust and Optimized DVR Controllers: Application of the Harris Hawks Algorithm

Mahmoud

Esmail

Atia³

et al. 2022

International Transactions on Electrical Energy Systems

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The voltage quality (VQ) index has become a significant measure of recent power system stability. The integration of photovoltaic (PV) systems plus smart home loads (SHLs) at low voltage levels (LVLs) has resulted in various issues such as harmonics rise and voltage instabilities as a result of faults and systems nonlinearity. In this work, a dynamic voltage resistor (DVR) is implemented to enhance VQ, and its dynamic performance hinges on its control system ability. To enhance the DVR’s control system, for surpassing nonstandard voltage with a quick response and harmonics reduction at LVL under harsh operating events, an optimal controller design using the Harris Hawks algorithm (HHA) is proposed. To verify the value of the suggested solution, the hard operating events (voltage sag, voltage swell, fluctuating voltage, and imbalanced voltage) are examined and assessed. To show the effectiveness of the HHA technique, a comparison of the % total harmonic distortion (THD) reductions achieved by the suggested and conventional controllers of DVR is conducted for the scenarios under study. Moreover, the suggested controller stability is analyzed and assessed using Lyapunov’s function. The benefits of the optimized controller system are inferred from the results, including their robustness, simplicity, efficient harmonic rejection, minimal tracking error, quick response, and sinusoidal reference track. The results of the simulation show that the DVR’s optimized controller is efficient and effective in maintaining a voltage at the needed level with low THD, safeguarding the sensitive load as expected, and showing a noticeable improvement in voltage waveforms. The mathematical modeling of HHA, PV system, DVR, and SHLs are all verified using MATLAB\Simulink.

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“…For instance, Vučetić et al [87] proposed a novel data mining algorithm to mine knowledge from real-world datasets and detect relationships between the data. Oliveira et al [88] use the KDD process to make decisions to reduce harmonic distortions. Chen et al [89] create a tutorial on KDD for movie recommendation, analysing the rating of millions of movies, obtaining that senior people are censored less than young people.…”

Section: Kdd Applicationsmentioning

confidence: 99%

What Is (Not) Big Data Based on Its 7Vs Challenges: A Survey

García

Álvarez-Fernández²

2022

BDCC

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Big Data has changed how enterprises and people manage knowledge and make decisions. However, when talking about Big Data, so many times there are different definitions about what it is and what it is used for, as there are many interpretations and disagreements. For these reasons, we have reviewed the literature to compile and provide a possible solution to the existing discrepancies between the terms Data Analysis, Data Mining, Knowledge Discovery in Databases, and Big Data. In addition, we have gathered the patterns used in Data Mining, the different phases of Knowledge Discovery in Databases, and some definitions of Big Data according to some important companies and organisations. Moreover, Big Data has challenges that sometimes are the same as its own characteristics. These characteristics are known as the Vs. Nonetheless, depending on the author, these Vs can be more or less, from 3 to 5, or even 7. Furthermore, the 4Vs or 5Vs are not the same every time. Therefore, in this survey, we reviewed the literature to explain how many Vs have been detected and explained according to different existing problems. In addition, we detected 7Vs, three of which had subtypes.

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Voltage THD Analysis Using Knowledge Discovery in Databases With a Decision Tree Classifier

Cited by 12 publications

References 18 publications

Network video quality assessment method using fuzzy decision tree

Network video quality assessment method using fuzzy decision tree

Voltage Quality Enhancement of Low-Voltage Smart Distribution System Using Robust and Optimized DVR Controllers: Application of the Harris Hawks Algorithm

What Is (Not) Big Data Based on Its 7Vs Challenges: A Survey

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