Fiber optic current monitor for high-voltage applications

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868255

Renda, George F ^[1]

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1. Plainsboro, NJ

A current monitor which derives its power from the conductor being measured for bidirectionally measuring the magnitude of current (from DC to above 50 khz) flowing through a conductor across which a relatively high level DC voltage is applied, includes a pair of identical transmitter modules connected in opposite polarity to one another in series with the conductor being monitored, for producing from one module a first light signal having an intensity directly proportional to the magnitude of current flowing in one direction through the conductor during one period of time, and from the other module a second light signal having an intensity directly proportional to the magnitude of current flowing in the opposite direction through the conductor during another period of time, and a receiver located in a safe area remote from the high voltage area for receiving the first and second light signals, and converting the same to first and second voltage signals having levels indicative of the magnitude of current being measured at a given time.

• Research Organization: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
• DOE Contract Number: AC02-76CH03073
• Assignee: Trustees of Princeton University (Princeton, NJ)
• Patent Number(s): US 5107202
• OSTI ID: 868255
• Country of Publication: United States
• Language: English

Related Subjects

fiber
optic
current
monitor
high-voltage
applications
derives
power
conductor
measured
bidirectionally
measuring
magnitude
dc
50
khz
flowing
relatively
level
voltage
applied
pair
identical
transmitter
modules
connected
opposite
polarity
series
monitored
producing
module
light
signal
intensity
directly
proportional
direction
period
time
receiver
located
safe
remote
receiving
signals
converting
levels
indicative
opposite direction
opposite polarity
voltage signal
fiber optic
current flow
dc voltage
current flowing
directly proportional
light signal
light signals
voltage signals
modules connected
current monitor
voltage applications
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