Development of a Laboratory for Teaching Synchrophasor

In this research, an experimental synchrophasor network and a set of instructions were developed for introducing synchrophasor technology and its applications to graduate and senior undergraduate students. Synchrophasors are representations of the phasor values of sinusoidal currents and voltages in a power system with respective to a common phase angle reference and all measurements are reported with a time tag indicating the measurement time. Thus they are very useful for power system monitoring and control applications because the measurements made at different locations can be time aligned to create a snapshot of the power system. A synchrophasor measurement system consists of phasor measurement units (PMUs), communication network, one or more Phasor Data Concentrators (PDCs) and auxiliary systems such application servers. In the laboratory setup, a power system simulated in a RTDS real-time digital simulator provides analog voltages and currents to phasor measurement units (PMUs). Time synchronizing signals for the PMUs are supplied from a GPS clock. The PMUs send synchrophasor data to a phasor data concentrator (PDC) through Ethernet, and the PDC provides outputs to applications.  Several applications such as phasor data visualization, transmission line parameter monitoring, and fault location can be demonstrated using the experimental setup.

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