10kv crosslinking cable shrinkage terminal connector heat distribution measuring method

Abstract

The invention relates to a 10kV crosslinking cable shrinkage terminal connector heat distribution measuring method. The method comprises the steps that a temperature rise test platform is built; a test 10kV crosslinking cable loop is placed into the temperature rise test platform, so as to acquire parameter values required by a heat transfer theory model calculation; the acquired parameter values are put into a heat transfer theory model to calculate the equivalent heat conductivity coefficient of a sheath layer of a 10kV crosslinking cable; and in the heat transfer theory model, according to the equivalent heat conductivity coefficient, the inside temperature and the outside temperature of the sheath layer of the 10kV crosslinking cable under preset ambient temperature and ampacity are calculated, and the shrinkage terminal connector heat distribution information of the 10kV crosslinking cable is acquired. The method provided by the invention is a scientific and effective measuring method for 10kV crosslinking cable shrinkage terminal connector heat distribution measuring, and compensates for gaps in the field.

Description

technical field [0001] The invention relates to a method for measuring heat distribution, in particular to a method for measuring heat distribution of a 10kV cross-linked cable cold shrinkage terminal joint. Background technique [0002] With the upgrading and transformation of China's urban power grids, the proportion of cable lines in urban distribution networks is increasing year by year, and cable accidents are also showing a trend of frequent occurrence. The operation status of distribution network cables is increasingly concerned by power supply companies. The statistical data of cable accidents show that the intermediate joints and terminal joints of cables are often the weak link of cable insulation, and are largely affected by the technical level of construction personnel's joint production. Therefore, mastering the operating status of cable joints can effectively improve the safety of cable lines. operational reliability. [0003] A lot of research has been done o...

AI Technical Summary

Problems solved by technology

At present, there is still a blank area in the measurement and calculation of thermal distribution of 10kV cross-linked cable cold-shrink terminal joints, and there is a lack of effective measurement methods

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