20kV power cable ultra-low frequency three in one

Background：

Route name: Golf Course Switching Station XXXX Line 2 Incoming Line

Testing location: Golf course switch station

Test date: September 11, 2020

Cable type: YJV22-12/20kV-3 * 400

Cable length: 845m

Intermediate joint: 1 piece, 455m.

This line cable is laid along the cable trench and has been in operation for more than 10 years. However, the cable is an empty load cable. Due to its long operation time, diagnostic tests were conducted on the cable according to the planned power outage.

Solution：