What are the elements of a phasor network?
The simplest form of phasor network consists of TWO nodes; one Phasor Measurement Unit (PMU) at node 1 that communicates with one Phasor Data Concentrator (PDC) at node 2. Typically, many PMUs located at various key substations gather data in real-time and they are connected to a PDC at the utility center where the data is aggregated. A personal computer, connected to the output of the PDC provides the users with software, such as RTDMS that calculates and displays locally measured frequencies, primary voltages, currents, MWs and MVARs for system operators. Additionally, many PDCs belonging to different utilities can also be connected to a common central PDC (a.k.a., SuperPDC) to aggregate data across the utilities to provide an Interconnection-wide snapshot.
