Automatic Voltage regulation using IEC 61850

Nowadays, protection and control can be integrated in an IED (Intelligent Electronic Device). In addition, communication network technology has developed fast over the past years, enabling a more centralized control. This all has led to an increasing need to gather data from larger networks. One example of this discussion is voltage regulation with automatic tap changer. A tap changer control operates to connect appropriate tap position of winding in power transformers to maintain correct voltage level in the power transmission and distribution system. This paper, describe conventional tap changer and development in transformer tap changer control using IEC61850.