Method for monitoring temperature of cable in fan based on optical fiber sensor

Abstract

The invention discloses a method for monitoring the temperature of a cable in a fan based on an optical fiber sensor. The method employs a distributed optical fiber temperature measurement monitoringsystem, a distributed optical fiber temperature measurement device and a fire-fighting linkage system, the distributed optical fiber temperature measurement device is connected with the distributed optical fiber temperature measurement monitoring system, the fire-fighting linkage system is connected with the distributed optical fiber temperature measurement monitoring system, the distributed optical fiber temperature measurement device comprises a temperature measurement host, a temperature sensing optical cable, a monitoring host, monitoring software, a display screen and an optical fiber welding box, the temperature measurement host, the monitoring host, the monitoring software, the display screen and the optical fiber welding box are installed in an optical fiber temperature measurementscreen cabinet, and the optical fiber temperature measurement screen cabinet is mounted in a booster station. Temperature measurement is carried out on the cable in the fan in a mode of combining theexisting OPGW optical cable channel of the wind power plant with the temperature sensing optical cable arranged in the fan, the laying length of the temperature sensing optical cable is reduced whilethe existing optical fiber channel is utilized, the temperature measurement accuracy is improved while various temperature measurement index requirements are met, and the investment cost is effectively reduced.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a method for monitoring the temperature of cables in a fan based on an optical fiber sensor. Background technique [0002] Cable heating is a common phenomenon in power operation. Anytime the power cable runs longer, the risk of cable heating will also increase. Cable fire failures also account for a large part of the overall electrical accidents, which poses a great threat to safe power transmission. . As the cable itself, no matter what causes the fire accident, they have to go through the following processes when they catch fire: insulation somewhere in the cable is damaged → intermittent or continuous discharge → cable insulation drops significantly and local heating → explosion or arc occurs somewhere in the cable, and Bad gas generation → the whole cable tray catches fire. Because the cable safety problem has the characteristics of strong sporadic faults and large...

AI Technical Summary

Problems solved by technology

Flame detectors require open flames and high visibility. Smoke and occlusions in the early stages of a fire are likely to cause false alarms, and electric signal sensing is used, which is susceptible to electromagnetic interference and has a high false alarm rate.

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