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This paper builds a foundation for detecting spoofed GPS signals through multiple PMU comparison. Frequency measurements from PMUs in ERCOT and the Eastern Grid are used as the basis for calculations and simulated GPS signal time shifts. When PMUs in a single control area are compared, the difference between the individual PMU's frequency-based integrated time error and the average time error between...
Wide Area Monitoring Systems (WAMS) are a Smart Grid technology which can enhance real-time situational awareness for power sytem operators. WAMS are created from a network of synchronized measurement devices taking voltage and current measurements from the power system. This network is also known as a synchrophasor network. A synchrophasor network was created at the University of Texas at Austin...
This paper presents a method for screening synchrophasor data to search for power system events of interest. The method employs the Prony algorithm to estimate mode amplitude, frequency, and damping ratio on actual synchrophasor data. The procedure uses seven different Linear Prediction Model (LPM) orders, plus a 10 second window width that slides in steps of 1 second, to minimize the possibility...
Synchronized phasor measurements are becoming widely used in wide-area networks (WANs) around the world for real-time control, monitoring, and post-disturbance analysis. While a few utilities in Texas presently employ synchrophasors in their service territories to increase overall service reliability, many challenges have prevented the development of a large-scale synchrophasor measurement network...
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