Dynamic performance test of single-phase phasor measurement units

Wide area measurements are becoming the norm of power system monitoring, protection and control. Frequency monitoring network (FNET) is a low-cost, easily deployable system at 120V distribution level. The frequency disturbance recorder (FDR) is actually a single-phase phasor measurement unit (PMU) in the sense that it measures the voltage phase angle, amplitude, and frequency from a single-phase voltage source. This paper discussed a calibrating and dynamic testing procedure developed for assuring the quality and accuracy of FDRs. Voltage magnitude and angle are calibrated, and two types of dynamic performance test, step and ramp, are performed for verifying the dynamic performance of FDRs. A detailed FDR calibrating and testing case is given. The test results demonstrate that the quality and accuracy of FDRs can satisfy the requirement of wide area measurement system.