Advanced tap changer control of parallel transformers based on IEC 61850 GOOSE service

This paper presents in detail how the two most usual control schemes for Automatic Voltage Regulators (AVRs), master-follower method and circulating current method, can be implemented by means of the application of IEC 61850 standards for up to five power transformers working in parallel. Although the approach is the use of IEC 61850 standards, what is really needed is limited to the GOOSE service. GOOSE service requires an Ethernet network for publication and subscription, but it´s not necessary to deploy any other additional IEC 61850 service, simplifying the Intelligent Electronic Devices (IED) acting as AVRs. As a result of this fact, this solution can be used for IEC 61850 SAS and for non-IEC 61850 substations.