James A Godfrey

US Patent:

20160370408, Dec 22, 2016

Filed:

Jun 22, 2015

Appl. No.:

14/745825

Inventors:

- Waltham MA, US
Joshua Berglund - Hopkinton MA, US
Timothy J. Mason - Uxbridge MA, US
Michael L. Murphree - Foxboro MA, US
Alexander E. Post - Watertown MA, US
James F. Godfrey - Holbrook MA, US

International Classification:

G01R 19/32
G01R 19/25
G01R 15/16

Abstract:

An ungrounded power line sensor system includes a housing configured for coupling about a power line, at least a first voltage sensing plate supported by the housing and exposed to rain and snow, and at least a second voltage sensing plate supported by the housing and shielded from rain and snow. Voltages sensed by the first and second voltage sensing plate are separately measured in order to mitigate variations in the two measurements due to a weather event, for example by applying a weighted average calculation to the measurements to cancel out the effects of rain on the first voltage sensing plate.

US Patent:

20140125354, May 8, 2014

Filed:

Oct 23, 2013

Appl. No.:

14/061128

Inventors:

- Reston VA, US
David C. Meeker - Natick MA, US
James F. Godfrey - Holbrook MA, US
Jeffrey C. Travis - Brookline MA, US
William G. Leary - Natick MA, US
Alexander E. Post - Watertown MA, US

Assignee:

QinetiQ North America, Inc. - Reston VA

International Classification:

G01R 21/06
G01R 35/00

US Classification:

324601, 324686

Abstract:

A hot stick power analyzer includes a housing mounted on a pole and a channel for a power line. A ground line extends from the housing and there is a power line conductive contact. A voltage sensor includes voltage sensing circuitry connected to the power line conductive contact and the ground line. There is a high voltage capacitance between the ground line and the voltage sensing circuitry. A current sensor includes windings about and spaced from the power line. A processing subsystem is responsive to the voltage sensing circuitry and to the current sensor and is configured to compute power analysis metrics.