| More and more XLPE were used in power transmission in city.during the cable running time,however,heat produced by the conductor current and dielectric loss would accelerate insulation aging,shorten cable life,even arise accident.So it is reasonable to measure the temperature of cable on-line,research its character of heat transmission.In this paper,distribute temperature system(DTS) which is executed by laying optical fiber at the surface of cable was applied to monitor the temperature of sheath,then the measure accuracy was studied.Several methods of calculating conductor temperature were compared,amethod of Centre Parameter was selected to calculate the conductor of power cable laying in the tunnel,to realize this calculation procedure,program which can input parameter freely was edited successfully.Finally,test was carried out to compare the temperature of cable conductor between measured on field and calculated by this method. |
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