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This paper uses CT to gain the energy directly from the high-voltage power line, which is to address the problem of power supply for monitoring system of dynamic increasing capacity in high voltage side of transmission line. The draw-out power coil can induce voltage from the transmission line whose current ranges from 50 to 1000A. Then after rectifying, filtering, voltage reduction and voltage stabilization,...
To measure voltage distribution of the converter thyristor valve and valve components under lightning impulse voltage is uniform or not, this research developed a small wide-band high-voltage divider. Because the performance of a voltage divider could be affected significantly by the stray capacitance, this paper adopts resistive and capacitive voltage divider in parallel structure, and uses stray...
Ice monitoring on the overhead transmission lines is very important to insure the power grid safe during the ice disaster. To solve the electromagnetic interference, a tension sensor based on Fiber Bragg Grating is developed to measure the tension of the power transmission line. The sensitivity of the sensor is 0.2286 pm/N calibrated with a test machine. The relative error of the load and sag, measured...
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