Design-dependent slot discharge and Vibration Sparking on high voltage windings

被引：18

作者：

Liese, Manfred ^{[1
]}

Brown, Martin ^{[2
]}

机构：

[1] Tech Univ Dresden, D-01062 Dresden, Germany

[2] Atel CZ, Sro, Prague 11000 1, Czech Republic

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2008年 / 15卷 / 04期

关键词：

high voltage insulation; slot discharge; vibration sparking; damage mechanisms;

D O I：

10.1109/TDEI.2008.4591212

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Partial Discharge effects are widely acknowledged as a damage mechanism for deteriorating high voltage windings of electrical machines. Vibration Sparking is another but scarcely known. Not only is Vibration Sparking significantly more damaging to electrical machine windings, unlike partial discharge deterioration it can occur at any position within the winding. Deteriorated winding insulation at the low voltage ends can only be detected via offline monitoring as online monitoring is not sufficient. Prevention of Vibration Sparking requires a reliably earthed outer Corona layer of the winding bars or sufficiently large resistances of the outer Corona layers. However the slot design needs to take account of both Vibration Sparking and partial discharge in order to mitigate these deterioration mechanisms.

引用

页码：927 / 932

页数：6

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