Adaptive quadrilateral characteristic distance relay

Details Adaptive quadrilateral characteristic distance relay Adaptive quadrilateral characteristic distance relay

1997-01-30

1998-08-18

Karlsen, Ernest F.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324525, 324521, 324 86, 361 80, H02H 338, G01R 3102

Patent

active

057962588

ABSTRACT:
A quadrilateral characteristic relay system for determining a fault associated with a multiple-phase electric power transmission system is disclosed. The system dynamically adapts one line of the quadrilateral trip region to account for the interaction of load current and fault resistance. As a result of the adaptation, the system exhibits better overreach and underreach performance characteristics. The system employs impedance and voltage plane quadrilateral characteristics using negative sequence current as a proxy for fault current. In the voltage plane, the fault determination is made through a series of comparisons, avoiding computationally inefficient mathematical divisions.

REFERENCES:
patent: 4222085 (1980-09-01), Mesmaeker
patent: 4230982 (1980-10-01), Mesmaeker
patent: 4249124 (1981-02-01), DeMesmaeker
patent: 4268886 (1981-05-01), Mesmaeker
patent: 4287547 (1981-09-01), Vitins
Zhang Zhizhe et al., "An Adaptive Approach in Digital Distance Protection," Jan. 1991 IEEE.
Elmore, Walter, "Evolution of Distance Relaying Principles," 48th Annual Conference for Protective Relay Engineers, Texas A&M University, College Station, Texas, Apr. 3-5, 1995.

Affiliated with

Also associated with

Rating

Adaptive quadrilateral characteristic distance relay does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive quadrilateral characteristic distance relay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive quadrilateral characteristic distance relay will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1117883