Data exchange standardization in a microgrid protection scheme according to the IEC 61850

In this paper a scheme is proposed for a decentralized adaptive microgrid protection. In this scheme, the relays are monitoring the microgrid conditions using telecommunication. Once any change happened in the microgrid conditions, relays update their settings. Through standardization of exchanged data, unconventional data is not applied and a good mentality is built for the implementation of a protection scheme in the real world. So, the exchanged data among IEDs in the proposed protection scheme is defined by the IEC 61850. There is not any limitation for relay type required data is described for both instantaneous and inverse time. It can be shown that there is no problem in using inverse time over current relays in this protection scheme but there is a challenge in data definition for implementation of the protection scheme by instantaneous overcurrent relay. The mentioned standard lets the user define new logical node, data object and common data class in the scheme. In this paper two new data objects are also proposed for logical node of overcurrent relay in facing with occurred problems.