Intelligent Distribution Bus Automatic Transfer Scheme using IEC 61850

An automatic bus transfer scheme (ABTS) is a conventional method of supplying power to a load by safely transferring motor loads to an alternate healthy source if the primary source fails. State-of-the-art bus transfer schemes can be improved significantly by using intelligent electronic devices (IEDs) and communication standard IEC 61850 to supply uninterrupted power to customers. In this work, an intelligent distribution bus automatic transfer scheme (IDBATS) is proposed, which leverages the use of generic object-oriented substation event (GOOSE) messages. The scheme prevents the power transformer from overloading, and it can be implemented on a substation regardless of the network configuration and load demand. Since the protection logic is kept in the master IED, the scheme can include any new transformers added to the substation network. The IDBATS scheme was validated on a 230 kV/34.5 kV distribution substation by conducting a hardware-in-the-loop simulation using real-time digital simulator (RTDS).