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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 » FNET/GridEye

Right Float PhotoFNET/GridEye is a low-cost, GPS-synchronized wide-area power system frequency measurement network.  Highly accurate Frequency Disturbance Recorders (FDRs) developed at Virginia Tech are used to measure the frequency, phase angle, and voltage of the power signal found at ordinary 120-V electrical outlets.  The measurement data are continuously transmitted over the Internet to the FNET/GridEye server housed at the University of Tennessee.

Several applications have been developed which utilize the FNET/GridEye data.  These include:

  • Event detection and location
  • Oscillation detection
  • Animations of frequency and angle pertubations
  • Integration of renewables into the power grid
  • Detection of system breakup or islanding
  • Prediction of grid instability and reduction of blackouts
  • Providing grid control input signals 

FDR CloseupCurrently, FNET/GridEye collects data from approximately 80 FDRs located across the continent and around the world.  Additional FDRs are constantly being installed so as to provide better observation of the power system.

View the FNET/GridEye Web Server Display

FDR Installation and Troubleshooting Information

View the PES Lab Demo Video on YouTube

FNET/GridEye Industry Consortium

The FNET/GridEye Industry Consortium was formed to pool resources to support FNET/GridEye operation and research. Among other benefits, Consortium member companies will have access to automatic power grid event alert e-mails. This e-mail includes event size (MW) and location information whenever possible, as well as event data plots. Members will also have access to the FNET/GridEye event website which documents the most recent major events.

Please contact Prof. Yilu Liu for more information on joining the FNET/GridEye Industry Consortium.