Installation of SterPMU-R1 rack mounted units in various Croatian transformer stations
During the last two years, more than 20 SterPMU-R1 devices have been installed on 400kV and 220kV lines and on 110kV busses critical for power evacuation from the most problematic point in transmission system: TE Plomin, HE Zakučac and HE Peruća and wind park Vrataruša.
Primary Ethernet communication is used for PDC running WAM algorithms in national dispatching center, with each device transferring dual C37.118.2 synchrophasor at 50 Hz sampling rate. Secondary GPRS line is used for system-wide event capturing with WAMSTER cloud solution without any interfering with the primary, process communication network.
On-going activities include preparation for installation in the rest of 400 kV grid stations and monitoring of 220 kV corridor in southern Croatia critical for hydro- and wind-generated power evacuation, evaluation of communication paths between PMUs and NDC, oscillation monitoring, transition from wide area monitoring to wide area monitoring, protection and control algorithms and development of tools for real-time stability assessment.