Power line property measurement devices and power line fault location methods, devices and systems

摘要

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.