Development of 66 kV XLPE submarine cable using optical fiber as a mechanical-damage-detection-sensor

Submarine cables are exposed to great risk of serious mechanical damage by ship anchors or equipment used for fishing. Detection of such damage in a submarine cable is a very useful technology for improving the reliability of a submarine cable power transmission line. A mechanical damage detection sensor using optical fibers has been developed. A prototype 66 kV XLPE submarine cable incorporating the sensor was manufactured for trial, and the ability of the sensor was confirmed by compression tests. An actual 66 kV XLPE submarine cable with the sensor was manufactured and installed as an operating transmission line in Japan