Invention Grant
- Patent Title: Ground potential rise monitor
- Patent Title (中): 地电位上升监视器
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Application No.: US12401033Application Date: 2009-03-10
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Publication No.: US08149128B2Publication Date: 2012-04-03
- Inventor: Zachery W. Allen , Gary A. Zevenbergen
- Applicant: Zachery W. Allen , Gary A. Zevenbergen
- Applicant Address: US DC Washington
- Assignee: The United States of America as represented by the United States Department of Energy
- Current Assignee: The United States of America as represented by the United States Department of Energy
- Current Assignee Address: US DC Washington
- Agent Michael J. Dobbs; Daniel D. Park; John T. Lucas
- Main IPC: G08B21/00
- IPC: G08B21/00

Abstract:
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.
Public/Granted literature
- US20100231399A1 Ground Potential Rise Monitor Public/Granted day:2010-09-16
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