Power distribution cable joint temperature measurement and self-energy-taking method, system and device and medium

The invention belongs to the technical field of power distribution cable joints, and particularly relates to a power distribution cable joint temperature measurement and self-energy-taking method, system and device and a medium, and the method comprises the steps that an energy taking chip takes energy from a power distribution cable and supplies power to a temperature sensor; the temperature sensor performs temperature measurement sensing on the cable joint to obtain original temperature data of the cable joint; remotely transmitting the acquired original temperature data of the cable joint; remotely transmitted original temperature data of the cable joint are obtained, energy consumption and a temperature field are calculated, transient analysis is carried out, and an analysis result is obtained; and outputting the analysis result. A coupling mechanism of a cable is deeply understood through a temperature measurement monitoring system, a finite element method based on temperature field numerical calculation