Study on Test for Wide-frequency Phasor Measurement Devices in Power Systems
Large-scale operation of new energy and DC transmission have resulted in changes of grid characteristics,and integration of large amount of new energy sources and constant increase in nonlinear loads have causes various types of oscillations,harmonic interferences and other problems,seriously affecting safety and stability of power system.The existing measurement equipment focuses on power frequency signal measurement,and its performance is difficult to meet the requirements of multiple types of signal parameters for power grid monitoring.The development of a broadband measurement device can measure and monitor real-time harmonics,synchronous phasors,and various power oscillations in the power grid,and transmit measurement data and analysis results to the main station.This paper combines the functional characteristics of wide-frequency phasor measurement devices and the requirements of existing technical specifications to establish a wide-frequency phasor measurement device testing and verification platform.By cooperatively using static and dynamic testing and wide-frequency oscillation testing,experimental study has been conducted on the wide-frequency phasor measurement device.The test method and experimental results effectively validate the various functions of the wide-frequency phasor measurement device,providing experimental support for subsequent on-site engineering applications.system security.
power systemoscillationsynchronous phasorwide-frequency phasor measurement
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