NDLI: Leakage current analysis of polymeric insulators under uniform and non-uniform pollution conditions

Content Provider	IET Digital Library
Author	Joneidi, Iman Ahmadi Akmal, Amir Abbas Shayegani Mohseni, Hossein
Abstract	This study presents two different methods under uniform and non-uniform pollution layer in order to measure and calculate the leakage current (LC) of silicone rubber insulators. Experimental test for evaluating the LC analysis of polluted insulator have been done in a laboratory clean fog chamber. The electric field and potential distributions were obtained from finite element method software for 3D models. The mathematical background and circuit theory are described in details by a section of insulator and using the extended form factor formula. The surface conductivity used in the calculations was extracted from the measured LC after wetting rate. LC characteristics under 1 : 1, 1 : 2, 1 : 5 and 1 : 10 ratios of top to bottom surface salt deposit density on polymeric insulators are studied. To verify the proposed models of this study, the results of experimental data and two other approaches are compared with together before dry-band formation. Moreover, a dynamic LC model under uniform pollution layer has been introduced and extended in order to calculate the LC when the formation of dry-bands along the insulator surface occurs. The dynamic model is drawn from experimental data and measured surface conductivity.
Starting Page	2947
Ending Page	2957
Page Count	11
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 11, Aug (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.2101
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-06-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	3D Models Bottom Surface Salt Deposit Density Circuit Theory Connector Dry-band Formation Dynamic LC Model Electric Field Environmental Factors Extended Form Factor Formula Finite Element Analysis Finite Element Method Software Fog Insulator Insulator Contamination Laboratory Clean Fog Chamber Leakage Current Nonuniform Pollution Condition Polluted Insulator LC Analysis Polymer Insulator Polymeric Insulator Leakage Current Analysis Potential Distribution Power Line Supports Power System Protection Silicone Rubber Insulator Surface Chemistry Uniform Pollution Condition Wetting Wetting Rate
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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