One of the major problems with ROCOF measurements is the large spike in the output of a ROCOF instrument when a so-called ‘phase jump’ occurs on the power network. As the name suggests these are sudden step in phase lasting perhaps a few cycles that do not represent a real change of the power system… Read More

A study into ROCOF use cases has been completed following survey of network operators and captured waveform data in networks in UK, NL and DK. The report considers the limitations and problems with ROCOF measurements in the context of actual use cases in real electricity grids. Working on the premise that ROCOF measurements are a trade-off of… Read More