Block ip Trap

Wide-area visualization

20 May 2015
Schweitzer Engineering Laboratories, Inc. (SEL) recently added synchrophasors to its popular SEL-735 Power Quality and Revenue Meter. With synchrophasors, users can now collect real-time measurements of electrical quantities from every SEL-735 Meter across their system. Synchrophasor data cane used to perform wide-area control, validate system models, determine stability margins, maximize stable system loading, detect islanding, record system-wide disturbances, and visualize dynamic system responses.

The SEL-735 supports the latest version of the synchrophasor standard, IEEE C37.118-2011 (as amended by IEEE C37.118.1a-2014) Class P, which provides for applications requiring fast response times under dynamic conditions. When used as a phasor measurement unit (PMU), this SEL meter provides synchrophasor data for frequency, phase, positive sequence components, four user-defined analog quantities and 14 digital status bits.

The SEL-735 features IEC 61000-4-30 power quality compliance along with accuracy, ease-of-use, reliability, and price. In addition, the combination of instrumentation transformer compensation and IEEE C37.118 is unique to SEL and the SEL-735 Meter. Customers can choose to correct delays and errors on each phase to achieve high system accuracy, even when using protection-grade transformers.