Abstract
In this paper it is shown that M class PMU (Phasor Measurement Unit)
reference model for phasor estimation recommended by the IEEE Standard
C37.118.1 with the Amendment 1 is not compliant with the Standard. The
reference filter preserves only the limits for TVE (total vector error),
and exceeds FE (frequency error) and RFE (rate of frequency error) limits.
As a remedy we propose new filters for phasor estimation for M class PMU
that are fully compliant with the Standard requirements. The proposed
filters are designed: 1) by the window method; 2) as flat-top windows; or
as 3) optimal min-max filters. The results for all Standard compliance
tests are presented, confirming good performance of the proposed filters.
The proposed filters are fixed at the nominal frequency, i.e. frequency
tracking and adaptive filter tuning are not required, therefore they are
well suited for application in lowcost popular PMUs.
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