Performance of composite insulators with and without bio contamination

Manandhar, Dinesh; Vasudev, N.; Nambudri, P. V. Vasudevan; Suryanarayana, K.; Ravi, K.N.; Krishnan, V.

doi:10.1109/ichve.2008.4773889

Cited by 19 publications

(6 citation statements)

References 2 publications

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“…Suri [7] has investigated the comparison of the performance of porcelain insulators with polymer insulators used in transmission lines, and M.N. Dinesh [11] has investigated the performance of composite insulators affected by biocontaminants and without bio-contaminants. All studies related to these insulators were carried out to obtain excellent composite insulator performance.…”

Section: Research Studymentioning

confidence: 99%

“…Several insulator performance tests were carried out including the polluted condition insulator test [2], flashover test [3], foggy condition insulator test [4], contaminated condition [5], insulator test under dry and wet condition [6], and a comparison test between composite material and ceramic insulator performance [7]. To facilitate the analysis of the performance of the insulator, especially on electrical parameters, it can also be done using artificial simulations of the tropical climate in the room [8] influences such as rain, so that their electrical performance is tested by flowing rain contaminants on the surface of the insulator [9], also the influence of environmental humidity conditions [10], even including the insulator test that is contaminated with the presence of plant life on the surface of the insulator [11]. This paper presents the comparison of electrical properties of the insulator in dry conditions with conditions contaminated with rainwater.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility Study on Electrical Properties of 20 kV Polymeric Insulator Dry Test and Rainwater Test

Syakur¹,

Nugroho²,

Hermawan³

2021

JRE

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Insulator is a very important equipment in an electric power system. Ceramic insulators have been widely used to support conductors in 20 kV power lines. The problem of ceramic insulators is that they are heavy, easily contaminated on the surface and require a lot of energy in the manufacturing process. Therefore, polymer insulators were developed. This paper presents the design of an epoxy resin polymer insulator with Titanium Dioxide (TiO2) as a nanofiller. The leakage current test was carried out in a high voltage laboratory by applying an AC high voltage of 50 Hz to the insulator dry conditions and the insulator wetted by rainwater contaminants. The results of the leakage current test in dry conditions are 487.6 μA, rainwater contaminated conditions are 594.93 μA, insulation resistance in dry conditions is 2.07 G-Ohms, and contaminated conditions are 1.41 G-Ohms. Based on the test results show that the insulator leakage current increases up to 22% when the surface of the insulator is contaminated with rainwater. Meanwhile, the insulation resistance decreased by up to 32% in conditions contaminated with rainwater. The value of leakage current and insulation resistance indicates that the epoxy resin insulator with TiO2 as filler is electrically feasible to use.

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Section: Research Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Feasibility Study on Electrical Properties of 20 kV Polymeric Insulator Dry Test and Rainwater Test

Syakur¹,

Nugroho²,

Hermawan³

2021

JRE

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“…These contaminants include microbial bacteria, filamentous fungi, and single-celled algae growth which mainly cause deterioration, invasion, discoloration, and corrosion of these insulators [45]. Mostly, their growth occurs in highly humid and high temperature regions [46][47][48][49]. Different authors [50][51][52] reported a decrease in wet flashover voltage due to algae growth.…”

Section: Field Experience Of Hvdc Composite Insulatorsmentioning

confidence: 99%

Global experience of HVDC composite insulators in outdoor and indoor environment

Akbar

Mehmood

2020

Reviews on Advanced Materials Science

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High-voltage direct current (HVDC) transmission is known as green-energy transfer technology and has recently become an attractive alternative of high-voltage alternating current (HVAC) due to its high-power transmission capability and lower power loss. Use of composite insulators on direct current (DC) transmission lines experienced rapid growth in recent years due to their high hydrophobicity and better performance in contaminated environment than conventional ceramic insulators. During their service operation on DC lines, insulators are prone to more accumulation of contaminants due to unidirectional electric field. The contaminants under wet conditions allow leakage current to flow on the insulator surface. Being organic in nature, polymeric insulators have a tendency to age under the combined effects of electrical and environmental stresses. To fully understand the long-term aging performance of DC composite insulators, a detailed survey was considered necessary. Towards that end, this paper critically summarizes worldwide experience of aging performance of composite insulators in the field as well as in laboratory conditions.

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“…Several researches have been reported from USA, Columbia, Uruguay, Japan, Germany, Tanzania, Sweden and Sri Lanka [1][2][3][4][5] about an apparent greenish spot, sometimes blackish or brownish visible on the surface of a polymer insulator, have the influential towards the withstand level of flashovers (dry and wet) moreover influencing the increment of the leakage current [2,4,6]. Later, they were classified as the commonly tropical biologicalcontamination-types such as moss, algae, mould (fungal) and lichen [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Later, they were classified as the commonly tropical biologicalcontamination-types such as moss, algae, mould (fungal) and lichen [1][2][3][4]. As these bio-contaminates colonise the surface of the insulators, they will impeded the drying of the surface and there is a possibility of increasing the degradation of the insulators through deposit enzymes [2,[5][6]. The research gap among previous research refers to considering the abovementioned case under lightning conditions.…”

Section: Introductionmentioning

confidence: 99%

The Electrical Behaviour of a Medium Voltage Polymer Insulator with Deposited Moss Layer on the Surface

Rahman,

Izadi,

Kadir

et al. 2019

IJRTE

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This paper presents a study on the voltage and electric fields behaviours of a 10kV polymer insulator with moss deposited under dry (air) condition. The aim of this study is considering on the electrical behaviour of insulator by having a surface layer of moss on it that can change the withstand voltage of insulators. It should be mentioned that these moss layers are commonly crated in the jungles especially in the tropical countries. To study on the above mentioned case, simulations were carried out using ANSYS High Frequency Structure Simulator (HFSS). The simulation insulator modelling includes the computerized evaluation of voltage and electric field distribution at three different locations for both clean and moss contaminated insulators. Noted that the electric field and also voltage profiles at different parts of insulators has been determined using applied simulated model. The moss contamination polymer insulator displayed a discontinuous distribution of the electric field compared to the clean insulator and their voltage distribution decreased with distances from the source. The results indicated that electric field along the insulator surface were greatly affected by hydrophobicity characteristic of the polymer. Therefore, the surrounding air of the moss contaminated insulator was prone to initiate a flashover. This study can be helpful for designing the distribution lines especially in high risk areas to set a proper design from the point of view of insulation coordination.

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Performance of composite insulators with and without bio contamination

Cited by 19 publications

References 2 publications

Feasibility Study on Electrical Properties of 20 kV Polymeric Insulator Dry Test and Rainwater Test

Feasibility Study on Electrical Properties of 20 kV Polymeric Insulator Dry Test and Rainwater Test

Global experience of HVDC composite insulators in outdoor and indoor environment

The Electrical Behaviour of a Medium Voltage Polymer Insulator with Deposited Moss Layer on the Surface

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