Ground-based transmission line conductor motion sensor
First Claim
1. A ground-based conductor motion sensing apparatus for remote sensing of movement of electric power transmission lines comprising:
- a ground based motion detector comprising a conductor motion sensing means capable of sensing changes in the electric field surrounding an energized transmission line due to the motion of the transmission line and an alarm signal generation means capable of generating an alarm signal when a condition of transmission line motion is sensed; and
an alarm signal receiving means capable of receiving the signal generated from said alarm signal generating means and triggering an alarm in response to said signal which indicates that transmission line motion has been sensed.
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Accused Products
Abstract
A ground based conductor motion sensing apparatus is provided for remotely sensing movement of electric power transmission lines, particularly as would occur during the wind induced condition known as galloping. The apparatus is comprised of a motion sensor and signal generating means which are placed underneath a transmission line and will sense changes in the electric field around the line due to excessive line motion. The detector then signals a remote station when a conditioning of galloping is sensed. The apparatus of the present invention is advantageous over the line mounted sensors of the prior art in that it is easier and less hazardous to install. The system can also be modified so that a signal will only be given when particular conditions, such as specific temperature range, large amplitude line motion, or excessive duration of the line motion, are occurring.
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Citations
10 Claims
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1. A ground-based conductor motion sensing apparatus for remote sensing of movement of electric power transmission lines comprising:
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a ground based motion detector comprising a conductor motion sensing means capable of sensing changes in the electric field surrounding an energized transmission line due to the motion of the transmission line and an alarm signal generation means capable of generating an alarm signal when a condition of transmission line motion is sensed; and an alarm signal receiving means capable of receiving the signal generated from said alarm signal generating means and triggering an alarm in response to said signal which indicates that transmission line motion has been sensed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification