Apparatus and method for reducing transient exponential noise in

Details Apparatus and method for reducing transient exponential noise in Apparatus and method for reducing transient exponential noise in

1988-06-15

1990-06-26

Teska, Kevin J.

Boots, shoes, and leggings

328165, 364483, 364492, G06F 1556, G01R 1900, H03F 126

Patent

active

049377698

ABSTRACT:
The offset in digital samples of the voltages and currents in a power transmission system following a fault is reduced by subtracting a linear approximation of the exponential component of the transient from the magnitude of the samples to extract the sinusoidal component. The slope and initial ordinate value of the linear approximation are derived from simple calculations using pairs of digital samples spaced one-half cycle apart. Compensated values of the digital samples for the first half cycle of the transient are produced within one-half cycle plus one additional sampling interval from fault inception.

REFERENCES:
patent: 4322641 (1982-03-01), Packard
patent: 4455612 (1984-06-01), Girgis et al.
patent: 4577279 (1986-03-01), Salowe
patent: 4587620 (1986-05-01), Niimi et al.
patent: 4646254 (1987-02-01), O'Connor et al.
patent: 4684989 (1987-08-01), Roeder et al.
patent: 4694414 (1987-09-01), Christopher
patent: 4727504 (1988-02-01), Van Broekhoven
patent: 4795983 (1989-01-01), Crockett et al.
Unified Protection, Monitoring, and Control of Overhead Transmission Line Achieves Performance and Economy, Edmund O. Schweitzer, III Phd, Schweitzer Engineering Laboratories, Pullman, Wash.
Alternating Current Circuits, Russell M. Kerchner, M.S. et al., Second Edition, New York, Chapter 16, John Wiley & Sons, Inc.

Affiliated with

Also associated with

Rating

Apparatus and method for reducing transient exponential noise in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for reducing transient exponential noise in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for reducing transient exponential noise in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1130114