Protective relay system for a power system

Details Protective relay system for a power system Protective relay system for a power system

1982-12-01

1985-05-14

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Feeder protection in distribution networks

361 66, H02H 336

Patent

active

045176191

ABSTRACT:
A protective relay system for power system is disclosed which receives electrical information from several points of a power transmission line via optical fiber transmission line to protect the system from a line fault. Instruction is sent to the respective points when a line fault phenomenon is detected from the information received for separating it from the power system. The system has high immunity from electrical noise in the process of information transmission to obtain improved response.

REFERENCES:
"Fiber-Optics Communication Link for Transmission of Signals in the Presence of High-Power Noise"--Aranchii et al, Instruments and Experimental Techniques, vol. 18, No. 4, pt. 2, pp. 1166-1168, 2/1976.
"Bidirectional Fibre Optic Loop-Structured Network", Ito et al, Electronics Letters, 1/22/81.
"An Optical Fibre Data Collection Highway"--Davies et al, Electro-Optics/Laser International, 3/1976.
"Optical Fiber Technology Dam Water Level Measurement Transmission System"--Morales et al.
"Optical Tee Coupler for Data Bus System with Single Multimode Fibers"--Matsui et al., Electronics Letters, 4/1981.
"Micro-Optics Components For Multimode Optical Fiber Systems"--Nunoshita et al.

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