Study on online monitoring of 220kV submarine cable operation status based on distributed fiber optics

With the continuous development of offshore wind power, in order to effectively grasp the operating status of submarine cables, it is crucial to study the online monitoring technology of submarine cable operating status. In this paper, according to the actual monitoring requirements of a submarine cable, the use of submarine optoelectronic composite cable this advantage, to carry out the Rayleigh optical time-domain analysis based on the distributed fiber acoustic sensing technology research, developed a submarine cable operating state integrated online monitoring system, complete the system site installation and operation. The system can monitor the submarine cable status in real time, the threat of interference from ships above the early warning, after the operation of the system shows that the system can real-time monitoring of submarine cable operation status, the early warning of the anchor damage to the cable plays a vital role.