[HTML][HTML] Ensemble learning methods using the Hodrick–Prescott filter for fault forecasting in insulators of the electrical power grids

LO Seman, SF Stefenon, VC Mariani… - International Journal of …, 2023 - Elsevier
Electrical power grid insulators installed outdoors are exposed to environmental conditions,
such as the accumulation of contaminants on their surface. The contaminants increase the …

[HTML][HTML] Fault prediction based on leakage current in contaminated insulators using enhanced time series forecasting models

NF Sopelsa Neto, SF Stefenon, LH Meyer, RG Ovejero… - Sensors, 2022 - mdpi.com
To improve the monitoring of the electrical power grid, it is necessary to evaluate the
influence of contamination in relation to leakage current and its progression to a disruptive …

[HTML][HTML] Group Method of Data Handling Using Christiano–Fitzgerald Random Walk Filter for Insulator Fault Prediction

SF Stefenon, LO Seman, NF Sopelsa Neto, LH Meyer… - Sensors, 2023 - mdpi.com
Disruptive failures threaten the reliability of electric supply in power branches, often
indicated by the rise of leakage current in distribution insulators. This paper presents a …

Comparison of artificial intelligence techniques to failure prediction in contaminated insulators based on leakage current

A Medeiros, A Sartori, SF Stefenon… - Journal of Intelligent …, 2022 - content.iospress.com
Contamination in insulators results in an increase in surface conductivity. With higher
surface conductivity, insulators are more vulnerable to discharges that can damage them …

Hybrid wavelet stacking ensemble model for insulators contamination forecasting

SF Stefenon, MHDM Ribeiro, A Nied, VC Mariani… - IEEE …, 2021 - ieeexplore.ieee.org
Contaminated insulators can have higher surface conductivity, which can result in
irreversible failures in the electrical power system. In this paper, the ultrasound equipment is …

Time series forecasting using ensemble learning methods for emergency prevention in hydroelectric power plants with dam

SF Stefenon, MHDM Ribeiro, A Nied, KC Yow… - Electric Power Systems …, 2022 - Elsevier
In hydroelectric plants, the responsibility for the operation of the reservoirs typically lies with
the national system operator, who controls the level of the reservoirs based on a stochastic …

Analysis of the ultrasonic signal in polymeric contaminated insulators through ensemble learning methods

SF Stefenon, R Bruns, A Sartori, LH Meyer… - IEEE …, 2022 - ieeexplore.ieee.org
Outdoor insulators may experience stress due to severe environmental conditions, such as
pollution and contamination. Through the identification of partial discharges by ultrasonic …

[HTML][HTML] Electrical insulator fault forecasting based on a wavelet neuro-fuzzy system

S Frizzo Stefenon, R Zanetti Freire… - Energies, 2020 - mdpi.com
The surface contamination of electrical insulators can increase the electrical conductivity of
these components, which may lead to faults in the electrical power system. During …

Wavelet group method of data handling for fault prediction in electrical power insulators

SF Stefenon, MHDM Ribeiro, A Nied, VC Mariani… - International Journal of …, 2020 - Elsevier
Electric power is increasingly being used in the globalized day-to-day and keeping the
electric power system running is necessary. Insulators are important components of the …

Correlation and instance based feature selection for electricity load forecasting

I Koprinska, M Rana, VG Agelidis - Knowledge-Based Systems, 2015 - Elsevier
Appropriate feature (variable) selection is crucial for accurate forecasting. In this paper we
consider the task of forecasting the future electricity load from a time series of previous …