Unified representation of data and model for sparse measurement based fault location

Transmission line fault location methods typically need measurements from at least one end of the faulted line. Sparse measurement based fault location method using phasor measurements from different substations located near the faulted line can be applied if the measurements are not available from any of the line ends. This method uses data and model described in both bus-branch and node-breaker representation. This requires use of nomenclature correlation tables to correlate between different data and model, which is a very cumbersome process as for each substation separate nomenclature correlation tables are required. The proposed solution uses standard formats of data and model (IEC 61970-CIM for describing power system model and SCADA data; IEC 61850-SCL for describing substation model and COMTRADE for describing event data triggered by IEDs) all expressed in node-breaker format, which allows for unified data and model representation by using simple rules.