Synchronised Phasor Measurement Unit

摘要

With the advent of real time Phasor Measurement Units (PMUs), synchronised phasor measurements are possible which allows monitoring of dynamic phenomena. PMU terminals installed in proper nodes of power systems enable increasing the transmission capacity. Also it improves the operational safety of the power system. The better measurement performance and system wide data for monitoring and presentation of power system dynamics provide the operator with real time phasor information for remedial actions. The design of a Synchronised Phasor Measurement Unit (PMU) based on a Digital Signal Processor is explained in this paper. The standard temporal reference of this system is generated with a signal of 1 pulse per second (1PPS) from a global positioning system (GPS). The algorithm used for the implementation of proposed system is Recursive Discrete Fourier Transform (DFT) algorithm. The simulation for the proposed algorithm in LabVIEW software is explained in this paper and the results obtained after simulation were also given. The developed Phasor Measurement Unit (PMU) provides phasor information (both magnitude and phase angle) of a given signal in real time. The information can be utilized to estimate and calculate the power system state.