1. Synchrophasor Timing Security Todd Humphreys | Aerospace Engineering The University of Texas at Austin 2012 Technologies for Security and Compliance Summit | August 1, 2012

2. University of Texas Radionavigation Lab graduate students Jahshan Bhatti, Kyle Wesson, Ken Pesyna, Zak Kassas, and Daniel Shepard Mark Psiaki, Brady OHanlon, Ryan Mitch (Cornell) Brent Ledvina (Coherent Navigation) Aaron Fansler (Northrop Grumman) Acknowledgements 3. UTC Hours MetersError 4:00 AM May 2, 2000 4. GPS Jammers 5. GPS Spoofer 6. GPS Spoofer 7. GPS Spoofer 8. GPS Spoofer 9. GPS Spoofer 10. GPS Spoofer 11. University of Texas Spoofing Testbed 12. UAV Video 13. PMUs are smart grid technology used to measure synchrophasors, standard voltage and current phasors referenced to an absolute time reference State estimation (using power flow meters) state measurement Synchrophasors must be measured simultaneously PMU time synchronization provided by GPS time reference receivers Phasor Measurement Units 14. Demonstrate that the IEEE C37.118 Standard Synchrophasors for Power Systems can be broken by a spoofer Defines required accuracy as 10 degrees) These effects can have significant impacts on PMU- based power grid control systems Local PMU-driven automated control is most vulnerable (e.g., Chicoasen-Angostura system) 23. radionavlab.ae.utexas.edu