| 摘要 |
<p>FAULT-CURRENT LIMITER FOR HIGH POWER ELECTRICAL TRANSMISSION SYSTEMS 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 seriesconnected 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 currentlimiting impedance of the inductor in the main power circuit.</p> |
