Fault-current limiter for high power electrical transmission systems

Patent · Tue May 18 04:00:00 EDT 1976

OSTI ID:7343967

McConnell, L D

A fault-current limiter is formed as a self-contained unit which can be connected in an existing power transmission system. The fault-current limiter consists of a series-connected inductor and capacitor which are resonant with the power line frequency, and a normally open switch is in parallel with the capacitor. A sodium fuse connected in series with a calibrating impedance is connected in parallel with the switch and the fuse is operated under predetermined circuit current conditions. The sodium fuse extends an operating plunger upon its operation, and the plunger causes the switch to close, thereby to short-circuit the capacitor and connect the current-limiting impedance of the inductor in the main power circuit.

• Assignee: I-T-E Imperial Corp.
• Patent Number(s): US 3957329
• OSTI ID: 7343967
• Country of Publication: United States
• Language: English

Related Subjects

200301* -- Power Transmission & Distribution-- AC Systems
EHV & UHV-- (-1989)
24 POWER TRANSMISSION AND DISTRIBUTION
AC SYSTEMS
CONTROL
CONTROL EQUIPMENT
CURRENTS
DESIGN
ELECTRIC CURRENTS
ELECTRIC POWER
ELECTRICAL EQUIPMENT
EQUIPMENT
HVAC SYSTEMS
OVERCURRENT
PHYSICAL PROTECTION DEVICES
POWER
POWER SYSTEMS
POWER TRANSMISSION
POWER TRANSMISSION LINES