An opgw direct current ice melting system

Abstract

The present invention provides an OPGW DC deicing system, which includes deicing ground wire, deicing measuring sensor, deicing measuring host, deicing measuring host, DC deicing power supply, 485 hub, switch, monitoring terminal and optical cable joint box; The ice ground wire is connected to the ice-melting measurement host through an optical cable joint box, the ice-coating measurement sensor is connected to the ice-coating measurement host through a single-mode optical fiber, the ice-coating measurement host, the ice-melting measurement host and the DC ice-melting power supply are all connected to the 485 hub, and the ice-coating measurement host The monitoring terminal is connected with the ice melting measurement host through a switch. The invention utilizes distributed optical fiber temperature measurement technology and online analysis technology to realize the problem of temperature overrun monitoring in the long-distance line melting process and the problem of ice melting control under different conditions during the ice-covered deicing period of the line; The measurement technology realizes the on-site passive, anti-electromagnetic radiation, and the ice-covered monitoring problems of transmission towers under abnormally harsh monitoring environments, and has strong practical application value.

Description

technical field [0001] The invention relates to a direct current ice melting system, in particular to an OPGW direct current ice melting system based on distributed optical fiber temperature measurement and fiber grating ice thickness measurement. Background technique [0002] The ground wire of the overhead transmission line is used for lightning protection in the transmission line. OPGW (OPGW) has the functions of communication channel and lightning protection wire, and has been widely used in high-voltage transmission lines for more than ten years. In terms of grounding methods, at present, ordinary lightning conductors in engineering mostly adopt the method of section insulation and one-point grounding; while OPGW basically adopts the method of base-by-base grounding. Due to the fact that the ground wire and the iron tower are not insulated under normal circumstances, the previous DC deicing scheme for transmission conductors cannot be directly applied to the icing of t...

AI Technical Summary

Problems solved by technology

The invention patent with the application number 200910175452.2 discloses a distributed optical fiber temperature measurement system, including a single-chip microcomputer control board, an optical fiber temperature field information acquisition module, a photoelectric detector and a circuit signal post-processing module, which can complete the temperature monitoring of the temperature measurement optical cable. There is no mention of the application on the OPGW optical cable to solve the temperature over-limit alarm and the control function of the deicing progress during the ice melting process

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