Patent ID: 8346404
Filing Date: 2013-01-01
Classification: H02J,Y02E,Y04S

Abstract:
1. A method of determining a bus bar voltage at a first node of a bus bar of a substation controlled by a Substation Automation (SA) system, the method comprising: receiving, by a first Intelligent Electronic Device (IED) of the SA system, network messages, from a second IED of the SA system, the messages comprising voltage samples of a bay voltage of a first bay connectable to the first node; receiving, by the first IED of the SA system, network messages, from a third IED of the SA system, that are indicative of a switch status of a switching device arranged between the first bay and the first node; and identifying the first bay as being connected to the first node and establishing, by the first IED of the SA system, the bay voltage of the first bay as the bus bar voltage at the first node by comparing, by the first IED of the SA system, the switch status indicated in the network messages received from the third IED of the SA system with a standardized topology description of the substation.