Electric field distribution of optimized composite insulator profiles under different pollution conditions

El-Refaie, El-Sayed M.; El-Rahman, Mohamed K. Abd; Mohamed, M. Kh.

doi:10.1016/j.asej.2016.08.012

Cited by 21 publications

(6 citation statements)

References 5 publications

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“…The contaminant analyzed is salt water [7][8][9]. In addition, several studies have conducted FEM simulations to determine the effect of contaminants on insulators [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. However, most of these studies only analyzed polymeric insulators against certain types of contaminants, such as ice [12], salt water [16,17], and water [20][21][22].…”

Section: Investigation Of Insulator Performance Under Artificial Cont...mentioning

confidence: 99%

Investigation of Insulator Performance Under Artificial Contaminants

Negara,

Asfani,

Hernanda

et al. 2023

IJIE

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There are three types of insulators, namely glass, ceramic, and polymer. Although polymers have hydrophobic properties that make them superior to other materials. However, in its application, ceramic and glass insulators are still used because they are cheaper. Environmental conditions around the work location of the insulator greatly affect its performance. Areas with high levels of pollution will result in the insulator being damaged quickly. The effect of seawater and fly-ash contaminants on the three types of insulators is discussed in this study. Experimental approaches and FEM-based simulations have been carried out. Pollution levels in seawater contaminants were standardized using ESDD. Meanwhile, the level of pollution in fly-ash contaminants is standardized using NSDD. Simulations and experiments were carried out at four levels of contamination, namely light, medium, heavy and very heavy. Then the simulation and test results are compared. The greater the ESDD and NSDD values, the greater the leakage current.

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Section: Investigation Of Insulator Performance Under Artificial Cont...mentioning

confidence: 99%

Investigation of Insulator Performance Under Artificial Contaminants

Negara,

Asfani,

Hernanda

et al. 2023

IJIE

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“…Literature [10] investigates impacts of anti-flashover coatings on the flashover voltage of insulators and indicates that insulators coated with anti-flashover coatings show an increase in flashover voltage of approximately 25%. Literature [11] explores impacts of insulator shed diameter, shed spacing and metallic end fitting diameter on electric field distribution, and the results show that optimizing the structure of an insulator can improve the electric field distribution on the surface of the insulator and reduce its maximum electric field intensity.…”

Section: Introductionmentioning

confidence: 99%

Simulation study on the structural optimization of composite insulators based on contaminant deposition

2024

Archives of Electrical Engineering

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Optimizing the aerodynamic structure of composite insulators can guarantee the safe operation of power systems. In this study, we construct a simulation model for composite insulator contaminant deposition using the COMSOL simulation software, and the rationality of the simulation model and method is verified through wind tunnel experiments. Taking the FXBW4-110/100 composite insulator as an example, we adopt a progressive optimization plan to explore the impacts of shed spacing 𝑠, and shed inclination angles 𝛼 and 𝛽 on its contaminant deposition characteristics under DC and AC voltages. Based on the numerical simulation results, we analyze the antifouling performance of insulators before and after structural optimization. The results indicate the following: 1) The contaminant deposition of the insulator under AC and DC voltages is negatively correlated with the shed spacing 𝑠, but positively correlated with the lower inclination angle 𝛽. 2) Under AC voltages, the contaminant deposition of the insulator increases with the upper inclination angle 𝛼, while under DC voltages, the contaminant deposition shows an uptrend first, then a downtrend and then an uptrend again with the increase of the upper inclination angle 𝛼.3) Compared with the original model, the AC-optimized model (𝛼 = 6 • , 𝛽 = 2 • and 𝑠 = 98 mm) with a larger shed spacing 𝑠, and smaller shed inclination angles 𝛼 and 𝛽 showed superior antifouling performance at wind speeds of no less than 2 m/s, and under the typical conditions (𝑣 = 2.5 m/s, 𝑑 = 20 μm, and 𝜌 = 2 200 kg/m 3 ), its contaminant deposition is 15% less than that of the original model (𝛼 = 10 • , 𝛽 = 2 • and 𝑠 = 80 mm).

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“…With the isolator attached as an intermediate piece, high-voltage lines can be laid without current flowing between the attached line and the earth. Environmental influences such as rain, dirt or snow can form an electrically conductive film on the isolator [1][2][3]. Therefore, most isolators have a ribbed structure to minimise leakage currents by increasing the path through the ribs, which reduces the likelihood of short circuits.…”

Section: Introductionmentioning

confidence: 99%