Systems and methods for monitoring a powerline conductor using an associated fiber optic cable
The clamping device may include (1) a monitoring device for a powerline conductor, where the monitoring device includes (a) at least one detection component that detects at least one physical characteristic at a location of the monitoring device, (b) a transmitter that wirelessly transmits data indicating the at least one physical characteristic, and (c) a receiver that wirelessly receives data indicating the at least one physical characteristic from at least one other monitoring device, where the transmitter retransmits the data indicating the at least one physical characteristic from the at least one other monitoring device, and (2) a container that retains the monitoring device such that one or more of the at least one detection component is maintained proximate the powerline conductor. The clamping device clamps a fiber optic cable to the powerline conductor to restrict movement of the fiber optic cable relative to the powerline conductor.
1. A clamping device comprising:
a cable clamp that attaches a fiber optic cable to a powerline conductor to restrict movement of the fiber optic cable relative to the powerline conductor;
at least one monitoring component that monitors, at the clamping device, at least one physical characteristic of at least one of:
the powerline conductor; or
an environment of the clamping device;
a receiver that wirelessly receives, from a first remote device, first data indicating the at least one physical characteristic at a remote location; and
a transmitter that:
wirelessly relays, to a second remote device for injection onto the fiber optic cable, the first data; and
wirelessly transmits, to the second remote device for injection onto the fiber optic cable, second data indicating the at least one physical characteristic at the clamping device.
2. The clamping device of claim 1 , wherein the at least one physical characteristic comprises at least one electrical characteristic of power carried on the powerline conductor.
3. The clamping device of claim 2 , wherein the at least one electrical characteristic of power carried on the powerline conductor comprises at least one of:
voltage; or
current.
4. The clamping device of claim 1 , wherein the at least one physical characteristic comprises at least one characteristic of the environment.
5. The clamping device of claim 4 , wherein the at least one characteristic of the environment comprises at least one of:
temperature;
humidity; or
wind speed.
6. The clamping device of claim 1 , wherein the at least one physical characteristic comprises a physical movement of the powerline conductor.
7. The clamping device of claim 6 , wherein the physical movement of the powerline conductor comprises at least one of:
aeolian vibration; or
galloping conductors.
8. The clamping device of claim 1 , wherein the at least one physical characteristic comprises a physical force on the powerline conductor.
9. The clamping device of claim 8 , wherein the physical force on the powerline conductor comprises strain on the powerline conductor.
10. The clamping device of claim 1 , wherein the transmitter wirelessly transmits the second data to the second remote device for injection onto the fiber optic cable and transmission to a remote data collection system connected to the fiber optic cable.
11. The clamping device of claim 1 , wherein the transmitter wirelessly transmits the second data to the second remote device for retransmission to a remote data injection device.
12. The clamping device of claim 1 , wherein:
the at least one monitoring component comprises a monitoring circuit that monitors a characteristic of power carried on the powerline conductor; and
the clamping device further comprises a communication timing circuit that causes the transmitter of the clamping device to wirelessly transmit the second data indicating the at least one physical characteristic according to a timing that is based on the characteristic of power carried on the powerline conductor.
13. The clamping device of claim 12 , wherein the characteristic of power carried on the powerline conductor detected by the monitoring circuit comprises a zero-crossing of a voltage carried on the powerline conductor.
14. The clamping device of claim 1 , wherein the at least one monitoring component samples the at least one physical characteristic multiple times per cycle of a current or a voltage carried by the powerline conductor.
15. The clamping device of claim 1 , further comprising:
an energy source that supplies electrical energy to the clamping device;
a battery that stores at least a portion of the electrical energy; and
a power management controller that:
manages power consumption of the clamping device;
provides electrical power to the clamping device from at least one of the energy source or the battery; and
directs at least a portion of the electrical energy from the energy source to the battery.
16. The clamping device of claim 15 , wherein the energy source comprises at least one of:
a solar cell; or
a power extraction component that extracts electrical power from the powerline conductor.
17. The clamping device of claim 16 , wherein the power extraction component comprises at least one of:
an inductive current transformer; or
an electrostatic series capacitor.
18. A method comprising:
monitoring, by a first clamping device that attaches a fiber optic cable to a powerline conductor at a first location, at least one physical characteristic associated with the powerline conductor;
monitoring, by a second clamping device that attaches the fiber optic cable to the powerline conductor at a second location, the at least one physical characteristic associated with the powerline conductor;
wirelessly transmitting, by the first clamping device to a remote data injection device for injection onto the fiber optic cable, first data indicating the at least one physical characteristic associated with the powerline conductor at the first location;
wirelessly receiving, by the first clamping device from the second clamping device, second data indicating the at least one physical characteristic associated with the powerline conductor at the second location; and
wirelessly retransmitting, by the first clamping device to the remote data injection device for injection onto the fiber optic cable, the second data wirelessly received from the second clamping device.
19. The method of claim 18 , further comprising:
detecting, by the first clamping device, a characteristic of power carried on the powerline conductor, wherein a timing of wirelessly transmitting the first data indicating the at least one physical characteristic associated with the powerline conductor by the first clamping device is based on detecting the characteristic of power carried on the powerline conductor.
20. A method comprising:
installing a fiber optic cable alongside at least a portion of a powerline conductor; and
installing each of a plurality of clamping devices at a corresponding location along the fiber optic cable to restrict movement of the fiber optic cable relative to the powerline conductor, wherein each of the plurality of clamping devices:
monitors at least one physical characteristic associated with the powerline conductor at the corresponding location along the fiber optic cable;
wirelessly receives, from another one or more of the plurality of clamping devices, first data indicating the at least one physical characteristic associated with the powerline conductor detected at one or more other locations along the fiber optic cable; and
wirelessly transmits, to a data injection device for injection onto the fiber optic cable, second data indicating the at least one physical characteristic associated with the powerline conductor at the corresponding location or the one or more other locations.