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The University of Tennessee

Power Information Technology Laboratory

Min H. Kao Department of Electrical Engineering and Computer Science

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Power IT Lab » Research » Universal GridEdge Analyzer (UGA-X)


Universal GridEdge Analyzer (UGA-X)

The Universal GridEdge Analyzer (UGA-X) represents the latest advancement in FNET/GridEye’s family of synchronized measurement devices, designed specifically for distribution-level, behind-the-meter applications. Building on over two decades of wide-area monitoring expertise, UGA-X integrates high-resolution waveform capture, phasor measurements, and power quality analysis into a compact, cost-effective, and Wi-Fi-enabled platform. With a 5x5x2 inch form factor and plug-and-play installation, UGA-X can be easily deployed in residential or commercial environments without altering existing electrical connections.

UGA-X Prototype
Figure 1: UGA-X Prototype

UGA-X supports waveform capture up to 36 kHz and synchrophasor reporting up to 2.4 kHz, enabling accurate monitoring of high-order harmonics, voltage distortions, and wide-band oscillations commonly found in inverter-based resources (IBRs) and converter-interfaced distributed energy resources (CIDERs).

Waveform Capture Example
Figure 2: High-resolution Waveform Capture

Equipped with both voltage (PT) and current (CT) measurement capabilities, UGA-X provides a more comprehensive view of behind-the-meter power dynamics. A bi-directional sampling time compensation algorithm mitigates errors from low-cost GPS modules and microprocessor latency, ensuring high-precision timestamping for synchronized measurements. Leveraging Wi-Fi and Ethernet connectivity, UGA-X streams real-time measurement data to the FNET/GridEye data center, supporting applications such as frequency monitoring, event detection, and situational awareness.

UGA-X hardware diagram
Figure 3: UGA-X hardware diagram

UGA-X brings high-performance, low-cost synchronized measurement capabilities to the edge of the grid, making advanced monitoring accessible for both research and practical deployment in modern power systems.