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Ground potential rise monitor

United States Patent

April 3, 2012
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.
Allen; Zachery W. (Mandan, ND), Zevenbergen; Gary A. (Arvada, CO)
The United States of America as represented by the United States Department of Energy (Washington, DC), N/A (
12/ 401,033
March 10, 2009
GOVERNMENT INTERESTS The United States Government has rights in this invention pursuant to the employer-employee relationship between the inventors and the U.S. Department of Energy (DOE).