SATEC PMU PRO phasor measurement unit (PMU) designed for synchrophasor-based monitoring (WAMS) and substation data exchange over IEC 61850 and IEEE C37.118.2.

It is used where time-aligned phasor data is needed for grid visibility, event correlation and wide-area performance monitoring. In practice, the SATEC PMU PRO phasor measurement unit is deployed across transmission, distribution and critical infrastructure where consistent, time-synchronised synchrophasor streams are required.

In operational environments, PMU data is not used in isolation. The SATEC PMU PRO phasor measurement unit becomes critical when multiple measurement points must be time-aligned to reveal system-wide behaviour that is not visible at substation level – such as inter-area oscillations, disturbance propagation and frequency instability under dynamic conditions.

Key functions

• Calculates time-aligned voltage and current phasors, frequency and rate of change of frequency (ROCOF) from sampled waveforms.
• Generates synchrophasor data streams with configurable reporting rates for real-time monitoring and post-event analysis.
• Maintains sub-microsecond time alignment across distributed measurement points using externally referenced time sources.
• Provides deterministic data delivery for wide-area monitoring and disturbance correlation.
• Supports simultaneous data streams to multiple clients for parallel monitoring and analysis.
• Ensures stable operation under high data rates and continuous streaming conditions.

Measurement inputs and I/O

• Synchrophasor measurements compliant with IEEE C37.118.1 for both P-Class and M-Class applications.
• High measurement stability under dynamic grid conditions, including frequency deviations and transient events.
• Consistent phasor, frequency and ROCOF calculation suitable for wide-area monitoring and system performance analysis.
• Designed for continuous operation with deterministic timing and data integrity across long-duration recordings.

Protocols & standards

• IEEE C37.118.1 synchrophasor measurement and IEEE C37.118.2 data transfer.
• IEC 61850 communications, including IEC 61850-90-5 synchrophasor data exchange.
• SCADA integration options: DNP3, Modbus and IEC 60870-5.

Time synchronisation

• IEEE 1588 Precision Time Protocol (PTP) and IRIG-B for sub-microsecond alignment of synchrophasor data.

In WAMS deployments, PMU data becomes valuable once measurements are taken at more than one location. When sites are properly time-aligned, phase angle and frequency behaviour can be compared directly, oscillations are identified earlier, and disturbances can be correlated across locations without timestamp ambiguity. SATEC PMU PRO is typically applied in such multi-site monitoring setups.

Communication & I/O

• Dual Ethernet interfaces for parallel data paths and resilient network topologies.
• Continuous, high-rate streaming to multiple data consumers in parallel.
• Optional plug-in I/O modules for status monitoring and control signalling where required.

Wide-area monitoring and system dynamics

• Time-aligned phasor data for wide-area monitoring and grid dynamics analysis.
• Correlation of disturbances across geographically distributed measurement points.
• Insight into oscillations, frequency behaviour and inter-area interactions.

Typical applications

• Wide Area Monitoring Systems (WAMS) for transmission and distribution networks.
• Integration with phasor data concentrators (PDCs) for centralised monitoring and analysis.
• Grid stability and oscillation monitoring across interconnected networks.
• Correlation of events across substations, renewable generation sites and critical infrastructure.
• Used for advanced system analysis and post-event investigation.

The SATEC PMU PRO phasor measurement unit is typically deployed within wide-area monitoring architectures to support system-level analysis based on time-aligned synchrophasor data.