Intelligent electronic device configuration verification

An exemplary Substation Automation testing tool for IEC 61850 compliant substations is disclosed. The testing tool verifies the configuration of a first Intelligent Electronic Device (IED) that is part of a Substation Automation (SA) system and initially configured to perform measurement, protection and/or control functions in accordance with a substation configuration specification. Configuration information is first read from an internal server of the first IED and transformed according to a dedicated data model. Related information is then read from a second IED that has initially been configured to perform the same functions as the first IED, or from a Substation Configuration Description (SCD) file, and likewise transformed. The transformed data is then compared in order to identify discrepancies or inconsistencies and to resolve errors introduced by the IED configuration process.