CO-CURRICULAR ACTIVITIES
Department of EEE organized ” Synchrophasor Technology “
Date: 17-01-2022
Time: 11 AM – 1 PM
A synchrophasor is a time-synchronized measurement of a quantity described by a phasor. Like a vector, a phasor has magnitude and phase information. Devices called phasor measurement units (PMU) measure voltage and current and with these measurements calculate parameters such as frequency and phase angle. Data reporting rates are typically 30 to 60 records per second, and may be higher; in contrast, current supervisory control and data acquisition (SCADA) systems often report data every four to six seconds – over a hundred times slower than PMUs.
PMU measurements are time-stamped to an accuracy of a microsecond, synchronized using the timing signal available from global positioning system (GPS) satellites or other equivalent time sources. Measurements taken by PMUs in different locations are therefore accurately synchronized with each other and can be time-aligned, allowing the relative phase angles between different points in the system to be determined as directly-measured quantities. Synchrophasor measurements can thus be combined to provide a precise and comprehensive “view” of an entire interconnection.
The accurate time resolution of synchrophasor measurements allows unprecedented visibility into system conditions, including rapid identification of details such as oscillations and voltage instability that cannot be seen from SCADA measurements. Complex data networks and sophisticated data analytics and applications convert PMU field data into high-value operational and planning information.
