Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1987-01-15
1989-07-25
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324522, 324539, 324509, 361 79, 361 85, G01R 3100, H02H 338
Patent
active
048517828
ABSTRACT:
A system and method is disclosed for detecting an abnormality in a network for distributing or transmitting electric power at a predetermined fundamental frequency. The system produces a signal representing the fundamental frequency and another signal representing a harmonic current occurring in the network. The phase relation between the fundamental voltage and harmonic current representing signal are compared. The system produces a signal indicating the occurrence of a high impedence fault in response to a predetermined change in the compared phase relationship.
REFERENCES:
patent: 3308345 (1967-03-01), Warrington
patent: 3515943 (1967-09-01), Warrington
patent: 4063164 (1977-12-01), Lanz et al.
patent: 4107778 (1978-08-01), Nii et al.
patent: 4161761 (1979-07-01), Moran
patent: 4196463 (1980-04-01), Dickerson
patent: 4203142 (1980-05-01), Lee
patent: 4281386 (1981-07-01), Kondow et al.
patent: 4297738 (1981-10-01), Lee
patent: 4313146 (1982-01-01), Lee
patent: 4314199 (1982-02-01), Yamaura
patent: 4352137 (1982-09-01), Johns
patent: 4363066 (1982-12-01), Bishop
patent: 4455612 (1984-01-01), Girgis et al.
patent: 4459545 (1984-07-01), Maeda
patent: 4466071 (1986-01-01), Bishop
patent: 4499417 (1985-02-01), Wright et al.
patent: 4500834 (1985-02-01), Ko et al.
patent: 4529929 (1985-01-01), Berggren
patent: 4559491 (1985-01-01), Saha
patent: 4560922 (1985-12-01), Heller et al.
patent: 4568872 (1986-02-01), Heller et al.
patent: 4570231 (1986-02-01), Bunch
patent: 4591992 (1986-05-01), Yamaura
patent: 4607309 (1986-08-01), Bishop
Griffin, C. H., et al. "The Interruption of Downed Conductors on Low Voltage Distribution Systems", Oct. 1976.
Carr, J., "Detection of High Impedance Faults on Multi-Grounded Primary Distribution Systems", Apr. 1981.
Clements, K. A., et al. "A Microprocessor-Based Technique for Detection of High Impedance Faults", Jul., 1986.
Aucoin, M., "Operational, Economic and Legal Considerations of High Impedance Fault Detection", Sep., 1986.
Jeerings Donald I.
Linders John R.
Eisenzopf Reinhard J.
Harvey Jack B.
LandOfFree
High impedance fault analyzer in electric power distribution does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High impedance fault analyzer in electric power distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High impedance fault analyzer in electric power distribution will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2360992