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SIGNAL TRANSMITTING SYSTEM FOR EXTRA HIGH VOLTAGE TRANSMISSION LINE
SIGNAL TRANSMITTING SYSTEM FOR EXTRA HIGH VOLTAGE TRANSMISSION LINE
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机译:特高压输电线路信号传输系统
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摘要
An apparatus for providing power for transmitting relaying signals from an extra high voltage transmission line to ground potential which avoids the use of a high cost current transformer and which is immediately effective to provide such signals when the transmission line is initially energized to protect such line if it is energized when a fault is present. The apparatus supplies the power from ground potential to line potential by means of sonic quantity transmitted from a first transducer to a second transducer through an elongated rod-like insulating member which preferably is caused to vibrate at its resonant frequency.
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