FIELD: electricity.
SUBSTANCE: according to the method, radio pulses are sent from the start of the line to the end of the power transmission line, such pulses have a bell-shaped form of an envelope, the reference parameters include time of propagation and attenuation of radio pulses as they propagate from the start of the limited section of the wire to its end, the average value of temperature is determined for this section of the wire, and glaze ice appearance is determined by changes in time of propagation and attenuation of radio pulses caused by appearance of glaze ice, with account of influence at controlled parameters of temperature variation of the wire section length, at the same time radio pulses are sent into the line, which have different frequencies of filling, attenuation of received radio pulses amplitude is measured in series from the value of time delay, the central maximum peak of resulting dependence is found, which makes it possible to accurately determine the time of propagation of a narrow-band radio pulse along a line.
EFFECT: reliability improvement.
2 dwg
