Study of manoeuvre time of distributed MV disconnectors

Abstract

A disconnector failure can lead to significant problems in a distribution system. For instance, two large blackouts in Sweden were partially caused by disconnector faults. One way of preventing future failures is condition monitoring. There is however a lack of previous research focusing on condition monitoring of disconnectors. In fact, most previous research on condition monitoring for switch gear focuses on circuit breakers, and the research focusing on disconnectors mainly study faults related to electrical breakdown. This study examines the possibility to predict mechanical failures of disconnectors using manoeuvre times recorded in SCADA. It studies the effects of external factors on manoeuvre time as well as the behaviour characteristics of four types of disconnectors.

Published in

Publisher: CIRED

Conference

CIRED 2021. 20-23 september 2021.

SLU Authors

• Rydén, Jesper

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Other Electrical Engineering, Electronic Engineering, Information Engineering


Permanent link to this page (URI)

https://res.slu.se/id/publ/114411