Power line property measurement devices and power line fault location methods, devices and systems
First Claim
1. A device for use in locating a fault on a power line of a power distribution system, comprising:
- at least one sensor for measuring at least one property of the power line, and at least one output device in operative connection with the sensor to signal a state of the power line, the state being determined from the measured property, the signaled state indicating whether a fault has occurred in the power line.
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Accused Products
Abstract
A device for use in locating a fault on a power line of a power distribution system includes: at least one sensor for measuring at least one property of the power line, and at least one output device in operative connection with the sensor to signal a state of the power line. The signaled state of the power line is determined from the measured property and indicates whether a fault has occurred in the power line. The output device can, for example, signal a current state or a previous state of the power line. The device can further include a controller in operative connection with the output device to control the operation of the output device based upon at least one of the current state or the past state of the power line. A device for use in measuring a property of power line of a power distribution system includes: a connector adapted to place the device in operative connection with the power line in the power distribution system without taking the power line out of operation; a sensor for measuring a property of the power line, and an output device in operative connection with the sensor to transmit a signal representative of the measured property.
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Citations
26 Claims
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1. A device for use in locating a fault on a power line of a power distribution system, comprising:
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at least one sensor for measuring at least one property of the power line, and at least one output device in operative connection with the sensor to signal a state of the power line, the state being determined from the measured property, the signaled state indicating whether a fault has occurred in the power line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for use in locating a fault in a power distribution system, comprising:
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a plurality of indicator devices, each of the indicator devices comprising;
at least one sensor for measuring at least one property of a power line in the power distribution system, and at least one output device in operative connection with the sensor to signal a state of the power line, the state being determined from the measured property, the signaled state indicating whether a fault has occurred in the power line, the plurality of indicator devices being connected at different points in the power distribution system such that the signals of the output devices of the indicator devices enable tracing of the fault. - View Dependent Claims (22)
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23. A device to measure at least one property of a power line of a power distribution system, comprising:
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at least one sensor for measuring the property of the power line, at least one controller in operative connection with the sensor for at least periodically receiving a signal of the measure property from the sensor, at least one output device in operative connection with the controller to signal a state of the power line, the state being determined from the measured property, and and a power supply rechargeable from the power line to power the device.
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24. A method of determining the location of a fault in a power distribution systems, comprising:
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prior to the fault occurring, placing a plurality of devices in operable association with two or more branches of a power line of the power distribution system, wherein each device can determine if a fault current passed through the associated power line and can provide an indication if a fault current passed therethrough;
subsequent to the occurrence of the fault, following the power line to the branch point, and following the power line from the branch point as indicated by the devices to have indicated the fault. - View Dependent Claims (25)
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26. A device for use in measuring a property of power line of a power distribution system, comprising:
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a connector adapted to place the device in operative connection with the power line in the power distribution system without taking the power line out of operation;
a sensor for measuring a property of the power line, and an output device in operative connection with the sensor to transmit a signal representative of the measured property.
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Specification