THE MONITORING OF Additional HEATING OF THE CABLE

In recent years, there has been a power consumption increase in large cities due to the intensive development of new neighborhoods and the widespread introduction of powerful electrical appliances. There is also a steady upward trend in non-linear load, largely due to the transition to energy-efficient light sources. In this regard, urban cable networks operate at the limit of their capacity, which means operating with the maximum allowable core temperature limit. The problems of monitoring the temperature of cable insulation are an urgent problem in the electric power industry. One of the most promising areas of research is the development of methods for determining the residual lifetime of cable insulation, which can be calculated from monitoring temperature of insulation and other factors that significantly affect the insulation material. The paper analyzes the possible methods to monitor the cable insulation temperature. Mathematical equations are proposed for an indirect temperature monitoring system for cable using distributed measurements technology.