University of Wyoming

Ndsu-research Foundation

Montana Tech of the University of Montana

John Pierre

Edwin A Suominen

David C Farden

Richard C Anderson-Sprecher

Dan Trudnowski

Roger A Green

Electric power grid monitoring methods and apparatus are described. According to one aspect, an electric power grid signal processing method includes accessing a plurality of signals which are individually indicative of a characteristic of electromechanical energy within an electric power grid, using the plurality of signals, generating a composite signal, and analyzing the composite signal to provide information regarding an oscillatory mode within the electric power system.

Electric power grid signal processing methods, oscillatory mode estimation methods and mode shape estimation methods

An exemplary signal processing system determines vector mismatch between a plurality of signal paths. Advantageously, the system can determine mismatch across a range of frequencies. A signal generator of the system can provide a periodic calibration signal having a plurality of frequency components. The system frequency can translate the calibration signal to provide a first set of observed samples. The first sample set can be compared to a second set of samples, which can be modeled by a function of parameters including an estimated vector mismatch and a plurality of basis functions. A value of vector mismatch can then be determined (at least to an estimate) that minimizes the difference between the first sample set and the second sample set. Methods and other systems with different advantageous configurations are also described.

Vector calibration system

Growing community of inventors

Laramie, WY, United States of America

John Pierre