Research On The Transmission Line Contact Temperature Indicator

Transmission lines are important parts of power system， their operation decideddirectly those of the power system security and efficiency. In order to monitor theoperation temperature of contact nodes in the transmission lines， an online indicatorbased on Curie temperature characteristics was designed. Using the temperaturesensing characteristics of ferrite material， and the principle that temperaturechanging will change magnetic field force， the temperature indicating device wasdeveloped. It ensures that an alarm indicating cap portion jumped up as soon as thetemperature reaches the set value， the alarm indicating cap portion was coated withconspicuous color， so facilitate patrol staff will found in time and then master thechanging the transmission line contact temperature to avoid accidents. Tests inlaboratory and operation experience had shown that the device could effectivelymonitor the temperature of transmission lines as to improve the transmission capacityof transmission line.