Analysis of Flashover Voltages of Disc Type Insulator under Artificial Pollution Condition

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AHMAD F.; KHAN Q.; ALAM A.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF ENGINEERING Year:2016 | Volume:29 | Issue:6 (TRANSACTIONS C: Aspects) Page(s): 0-0

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Information Journal Paper

Title

Analysis of Flashover Voltages of Disc Type Insulator under Artificial Pollution Condition

Author(s)

AHMAD F. | KHAN Q. | ALAM A. | Issue Writer Certificate

Keywords

Surface Conductivity

Contaminants

Equivalent Salt Deposit Density

Flashover Voltage

Non-soluble Deposit Density

Abstract

Tripping of overhead transmission lines in winter season/fog due to insulation failure has been foremost issue. Huge quantity of overhead insulator in distribution and transmission network make pollution based flashover a vital risk to the uninterrupted and steady power supply. Surface resistivity due to deposition of various environmental Contaminants on insulator surface gets low, which initiates flow of high leakage current and leads to flashover around the insulator surface. In this paper, Flashover Voltage (FOV) analysis of artificially polluted disc insulator carried out. Numerous kind of soluble and non-soluble and their mixture Contaminants exist in industrial, marine and desert regions are modeled and analyse insulator characteristics i. e. Equivalent Salt Deposit Density (ESDD), Non-soluble Deposit Density (NSDD), pH, Surface Conductivity and ESDD/NSDD. By using FOV and ESDD characteristic an empirical model is proposed to determine the Flashover Voltage. Comparative study of experimental and calculated values of FOV also carried out.

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