Synchronized phasors (synchrophasors) provide a real-time measurement of electrical quantities from across the power system. Applications include wide-area control, system model validation, determining stability margins, maximizing stable system loading, islanding detection, system-wide disturbance recording, and visualization of dynamic system response. The basic system building blocks are GPS satellite-synchronized clocks, phasor measurement units (PMUs), a phasor data concentrator (PDC), communications equipment, and visualization software.
Why Choose SEL?
Learn from SEL experts about applications, advancements, techniques, and products to make the most of synchrophasors.
Synchrophasors are currently being used by utilities around the world for system model validation, situational awareness, stability analysis, islanding detection, disturbance analysis, and wide-area measurement and control. SEL offers a wide variety of solutions to fit your application. Whether you are working with individual units or a complete system, SEL can help you design, install, and commission your system.
|Format||Synchrophasor Data Elements|
|PMU||IEEE C37.118||IEEE C37.118 Compliance Level||SEL Fast Message||Message Rate||CT Inputs||PT Inputs||Analogs||Digitals|
|SEL-2240 Axion—Modular PMU||2011 compliant||P and M class||•||1–60 mps||64#||64#||64#||30|
|SEL-311C, SEL-351, |
SEL-351A, and SEL-351S Protection Systems
|SEL-351RS Kestrel Single-Phase Recloser Control||•||1||1–60 mps||1||1||0||16|
|SEL-487V, SEL-421, and |
SEL-451 Protection, Automation, and Control Systems; SEL-411L Advanced Line Differential Protection, Automation, and Control System
|SEL-487E Transformer Protection Relay||•||1||•||1–60 mps||18||6||16||64|
|SEL-651R-2 Recloser Control||•||1||1–60 mps||3||6||0||64|
|SEL-751 Feeder Protection Relay||•||1||1–60 mps||3||3||4||16|
|SEL-751A Feeder Protection Relay||•||01||1–10 mps||3||3||4||16|
|SEL-700G Generator Protection Relay||•||1||1–60 mps||6||6||4||16|
|SEL-787 Transformer Protection Relay||•||01||1–10 mps||6||3||4||16|
|SEL-787-3E/-3S/-4X Transformer Protection Relay*||•||1||1–60 mps||12||4||4||16|
|SEL-311A, SEL-311B, |
SEL-311L, and Legacy SEL-351 Relays
|•||1 mpm–1 mps||3||3|
|SEL-734 Revenue Meter||01||•||1–20 mps||3||3|
|SEL-735 Power Quality and Revenue Meter||2011 compliant||P class||•||1–60 mps||3||3||4||16|
|SEL-2431 Voltage Regulator Control||•||1||1–60 mps||1||2||0||8|
1 Level 1 compliant for TVE and frequency range.
# A maximum of 64 CT, PT, or analog inputs allowed.
*12 CT inputs and the 4 PT inputs are maximum for each and a unit can not be configured with both of these maximums.
IEEE C37.118-2011 defines performance classes P and M. IEEE C37.118-2005 defines performance classes 0 and 1.
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