Electric power system with remote monitoring and control of prot

Details Electric power system with remote monitoring and control of prot Electric power system with remote monitoring and control of prot

1989-09-29

1990-11-20

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Feeder protection in distribution networks

361 66, 361 68, 361 81, 364487, H02H 318

Patent

active

049722905

ABSTRACT:
Monitoring and control of analog electromechanical protective relays and digital mcroprocessor based relays is integrated through a system including slave stations which record and time tag contact activity at each of the analog relays. The slave stations continuously retain digital samples of a predetermined number of the most recent cycles of the currents and voltages at the analog relays and when a trip occurs store the retained samples as pre-fault values together with a preset number of post-fault samples. A master station communicates with the slave stations monitoring the analog relays and with the digital relays through a two way communications network. The master station repetitively polls the slave stations and digital relays for contact activity. Detailed data such as the time tags and pre-fault and post-fault currents and voltages are then requested from those stations reporting contact activity. Either the slave stations or master station calculate fault location and type from the fault voltages and currents, an periodically calculate routine metering parameter such as watts and VARs.

REFERENCES:
patent: 4528611 (1985-07-01), Udran
patent: 4855861 (1989-08-01), Bergman et al.
patent: 4864457 (1989-09-01), Bergman et al.

Affiliated with

Also associated with

Rating

Electric power system with remote monitoring and control of prot does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric power system with remote monitoring and control of prot, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric power system with remote monitoring and control of prot will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-457925