A SYSTEM AND A METHOD FOR ENERGISED CONDUCTOR PHASE IDENTIFICATION BASED ON SYNCHRONOUS MEASUREMENTS USING A NETWORK MODEL

The method for energised conductor phase identification based on synchronous measurements using network model is performed with a system comprising a field device, a reference device and a server unit connectable to said reference and field devices, wherein the server is provided with a network model comprising information about connectivity, locations of network nodes, busbars, transformer units, field rotation, transformer vector groups and information about other phase shifting devices present in the network. In comparison to known methods, no measurements files are needed, but the identification of conductor phase is performed by matching the field device measurements to the selected reference device measurements, followed by application of the existing knowledge about network model (identification of transformers, field rotation, and connectivity in the network) and calculation of the phase shift from installed reference devices to all or selected busbars in the network model by a software installed and running either on the server, and/or the field device and/or the reference device.