DETERIORATION SENSING METHOD OF POWER LINE CONNECTING PANT

The present invention relates to a method for detecting the deterioration of a power line connection part. The method for detecting the deterioration of a power line connection part includes the following steps: a temperature sensor attachment step for radially attaching multiple temperature sensors (20) to a power line connection part (10), and also for attaching a single reference temperature sensor (40), which is separated from the temperature sensors (20) in a lengthwise direction, to the power line connection part; a temperature measurement step for individually measuring the temperature of the power line connection part (10) by using the multiple temperature sensors (20), and also for measuring a reference temperature by using the reference temperature sensor (40); and a measurement value calculation step for calculating a measurement value of each temperature sensor (20) and a measurement value of the reference temperature sensor (40), and then determining whether the power line connection part (10) is deteriorated. The reference temperature sensor (40) and each of the multiple temperature sensors (20), which are radially formed at the power line connection part (10), are integrally formed at a second insulation layer (11) of a power line when the second insulation layer (11) is produced. Since multiple temperature sensors are integrally formed at a power line connection part, the present invention can accurately and quickly detect the deterioration of the power line connection part, enables the temperature sensors to be used for a long time without being damaged or separated, and can reduce maintenance costs.