Invention Grant
- Patent Title: Detection of geomagnetically-induced currents with power line-mounted devices
-
Application No.: US14940910Application Date: 2015-11-13
-
Publication No.: US09753059B2Publication Date: 2017-09-05
- Inventor: Frank Kreikebaum , Paul Phillipsen , Stuart E. Ross , Yuli Starodubtsev
- Applicant: Smart Wires Inc.
- Applicant Address: US CA San Francisco
- Assignee: SMART WIRES, INC.
- Current Assignee: SMART WIRES, INC.
- Current Assignee Address: US CA San Francisco
- Agency: Marsh Fischmann & Breyfogle LLP
- Agent James L. Johnson; Robert G. Crouch
- Main IPC: G01R15/18
- IPC: G01R15/18 ; G01R15/20 ; G01R19/00 ; G01R21/08

Abstract:
A device for use in a power transmission system to sense GICs. The device may be a part of a reactance-injecting device on a power line, it may be a standalone device, or it may be a part of another type of device. The device may include a sensor to sense magnetic fields (e.g., a Hall effect sensor). The sensor may be positioned in the air gap of a magnetic core formed concentrically around the power line. The signal from the sensor may be converted to a digital signal and separately processed to determine the magnitude of the AC current and the magnitude of the DC (or quasi-DC) current. If the output signal of another A/C current sensor is available, that output signal may be used to adjust/calibrate the determined magnitude of the DC current. The sensor may communicate with other devices in a network to provide GIC information.
Public/Granted literature
- US20160069935A1 DETECTION OF GEOMAGNETICALLY-INDUCED CURRENTS WITH POWER LINE-MOUNTED DEVICES Public/Granted day:2016-03-10
Information query