An alternative approaches to predict flashover voltage on polluted outdoor insulators using artificial intelligence techniques

Salem, Ali Ahmed; Rahman, Rahisham Abd; Kamarudin, M. S.; Othman, N. A.; Jamail, Nor Akmal Mohd; Hamid, Haris Hafizal Abd; Ishak, Mohd Taufiq

doi:10.11591/eei.v9i2.1864

Cited by 11 publications

(6 citation statements)

References 15 publications

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“…To create the artificial contamination layer on the surface of the insulators, The insulator was cleaned and left to dry naturally. The solid layer method [28], [29], which has been utilized in accordance with IEC 60507 [30] to imitate the contamination state of the insulators in service, was adopted. To create an artificial pollution layer with varying conductance levels, varying weights of soluble salts were mixed with kaolin in 500 mg deionized water.…”

Section: B Experimental Procedures and Sample Preparationmentioning

confidence: 99%

Investigating and Modeling Ageing Effects on Polymeric Insulator Electrical Properties

et al. 2023

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Polymeric insulators, in particular silicone rubber (SIR) are lightweight, have good hydrophobicity characteristics, and are easy to carry and install. They are commonly used for outdoor insulation in power lines. However, pollution, UV radiation, temperature, discharge, wetness, and stress can cause them to degrade over time, losing their electrical properties. Therefore, evaluating the ageing and degradation of polymeric insulators under different conditions becomes crucial. This paper investigates the ageing effects of the polymeric insulators with differences in pollution, applied voltage, hydrophobicity class, and geometrical structures of insulators. The investigation includes the experimental tests of the insulators' electrical properties such as leakage current and flashover voltage, after assessing the initial characteristics of insulators based on their age and supply voltage. In addition, the aged polymeric insulator model based on an equivalent circuit model was developed to determine the leakage current and breakdown voltage of aged insulators. Moreover, an artificial neural network model is carried out to predict the critical leakage current and flashover voltage of the insulator under the ageing effect. The experiment results were used to validate the accuracy of the proposed models; with an aggregate error of less than 10%, the proposed models appeared to be satisfactory. These models can serve as a scholarly resource for designing, operating, and maintaining insulators, especially in polluted environments.

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Section: B Experimental Procedures and Sample Preparationmentioning

confidence: 99%

Investigating and Modeling Ageing Effects on Polymeric Insulator Electrical Properties

et al. 2023

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“…Moreover, the impact of pollutants such as salt fog, HNO 3 and NaCl solutions on HTV-SiR has been studied [ 7 , 116 , 117 ]. Through this review, it has become obvious that new investigation techniques related to contamination studies [ 118 , 119 , 120 ] have not yet been implemented for smart composite insulators involving micro/nano fillers.…”

Section: Concerns Of Electric Utilities and Way Forwardmentioning

confidence: 99%

Review of the Performance of High-Voltage Composite Insulators

Saleem

Akbar

2022

Polymers

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In the present literature survey, we focused on the performance of polymeric materials encompassing silicone rubber (SiR), ethylene propylene diene monomer (EPDM) and epoxy resins loaded with micro, nano, and micro/nano hybrid fillers. These insulators are termed as composite insulators. The scope of the added fillers/additives was limited to the synthetic inorganic family. Special attention was directed to understanding the effect of fillers on the improvement of the thermal conductivity, dielectric strength, mechanical strength, corona discharge resistance, and tracking and erosion resistance performance of polymeric materials for use as high-voltage transmission line insulators. The survey showed that synthetic inorganic fillers, which include silica (SiO2) and hexagonal boron nitride (h-BN), are potential fillers to improve insulation performance of high-voltage insulators. Furthermore, nano and micro/nano filled composites performed better due to the better interaction between the filler and polymer matrix as compared to their only micro- or nano filled counterparts. Finally, some aspects requiring future work to further exploit fillers are identified and discussed.

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“…Optimization processes typically consider the CFO (Critical Flashover Overvoltage) parameter associated with the insulators used in distribution networks as a problem restriction, that is if induced overvoltages exceed this value, it is considered that a flashover has occurred. However, modeling the electric arc physical effect caused by flashover is very important to evaluate the real effects of lightning discharges, as presented in [20,21] for insulators subjected to pollution.…”

Section: Introductionmentioning

confidence: 99%

Methodology for Analysis of Electric Distribution Network Criticality Due to Direct Lightning Discharges

et al. 2020

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Direct lightning discharges in overhead distribution networks invariably cause serious insulation damage, frequently leading to the electric system’s partial or total shutdown. Installing lightning arresters can be very effective, and it is commonly used to minimize this problem; however, considering that typically, electric distribution grids exhibit a very large number of electrical nodes, the massive use of lightning arresters may not be economically viable. In this way, this article proposes a methodology for allocating lightning arresters that can significantly reduce the number of lightning arresters installed, but at the same time maintaining an adequate protection level for the distribution grid. The proposed methodology, named Direct Discharge Crossing (DDC), analyzes the network criticality based on two main factors, which are the overvoltage magnitudes and the number of flashovers provoked by lightning discharges, and defines a feeder lightning performance function that is used to indicate the recommended location for lightning arresters’ installation. The simulation studies are accomplished using the IEEE 34 bus distribution grid and ATP software to demonstrate the efficacy of the proposed solution, which is confirmed by the results presented.

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An alternative approaches to predict flashover voltage on polluted outdoor insulators using artificial intelligence techniques

Cited by 11 publications

References 15 publications

Investigating and Modeling Ageing Effects on Polymeric Insulator Electrical Properties

Investigating and Modeling Ageing Effects on Polymeric Insulator Electrical Properties

Review of the Performance of High-Voltage Composite Insulators

Methodology for Analysis of Electric Distribution Network Criticality Due to Direct Lightning Discharges

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