Test Results from the SEMPR PMU

Fitting has been applied to the problem of making the measurements made by a phasor measurement unit. In this paper, results are presented from tests of a phasor measurement unit tested using a synthetic digital signal whose properties are well known and characterized. Because of this test method, the characteristics of the analog front-end and the A/D converter stage are bypassed, allowing the performance of the measurement algorithm to be explored. The PMU is tested according to some of the tests defined in the IEEE C37.118.1 standard, and some more stringent tests. It is shown that the system gives results with errors considerably smaller than the standard requirements for these static and dynamic tests. In addition, some results from point-on-wave recordings made by digital fault recorders are given.