Measurements and interpretations concerning leakage currents on polluted high voltage insulators

Thalassinakis, E; Karagiannopoulos, CG

dc.contributor.author	Thalassinakis, E	en
dc.contributor.author	Karagiannopoulos, CG	en
dc.date.accessioned	2014-03-01T01:19:16Z
dc.date.available	2014-03-01T01:19:16Z
dc.date.issued	2003	en
dc.identifier.issn	0957-0233	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15394
dc.subject	Leakage current	en
dc.subject	Non-linear phenomena	en
dc.subject	Polluted insulators	en
dc.subject.classification	Engineering, Multidisciplinary	en
dc.subject.classification	Instruments & Instrumentation	en
dc.subject.other	Electric conductance	en
dc.subject.other	Electric potential	en
dc.subject.other	Leakage currents	en
dc.subject.other	Pollution	en
dc.subject.other	Voltage insulators	en
dc.subject.other	Electric insulators	en
dc.subject.other	insulation	en
dc.title	Measurements and interpretations concerning leakage currents on polluted high voltage insulators	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0957-0233/14/4/303	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0957-0233/14/4/303	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	This paper presents data that may aid physical interpretation of leakage currents on insulators suffering pollution under real physical conditions. The measurements were performed on the power distribution system on the island of Crete. An on-line recording system has been installed on the insulators of the 150 kV network, in order to monitor the leakage currents on the polluted insulators and investigate the various parameters of the phenomena. It is convincingly shown that in the timeframe of one period of 50 Hz, above a threshold voltage value (smaller than the peak voltage) a non-linear i-v relationship may develop, leading to bistability and non-linear conductance phenomena. The well-established theory regarding leakage currents on high voltage insulators, as well as that concerning dielectrics in strong electric fields, provide the required theoretical basis for the interpretation of the experimental results obtained.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Measurement Science and Technology	en
dc.identifier.doi	10.1088/0957-0233/14/4/303	en
dc.identifier.isi	ISI:000185699300003	en
dc.identifier.volume	14	en
dc.identifier.issue	4	en
dc.identifier.spage	421	en
dc.identifier.epage	426	en