Abb Research Ltd.

Abb Schweiz Ag

Abb Power Grids Switzerland Ag

Marek Budyn

Thomas A Fuhlbrigge

Gregory F Rossano

William John Eakins

Biao Zhang

George Q Zhang

Luiz V Cheim

Poorvi Patel

Harshavardhan M Karandikar

Thomas P McNamara

Michael G Urmson

Harald Staab

Janusz Rybarski

Mariusz Wojcik

A method and system is disclosed for monitoring switchgear. The current supplied to the main bus is measured. The current flowing through a plurality of feeder circuits is also measured. The temperature of the main bus at one or more nodes is measured, wherein a node is a connection point between the main bus and each feeder circuit. The current flowing through one of the nodes is determined by subtracting the current flow through each the feeder circuit upstream from the node, from the current supplied by the input circuit. An alarm condition is determined if the temperature at a node exceeds a predetermined temperature value for a given current flow through the node. The alarm condition is thereafter displayed to a switchgear operator.

Bus condition monitoring system

Growing community of inventors

Krakow, Poland

Marek Budyn