Device and method of quickly positioning local discharging part of submarine power cable

Abstract

The invention discloses a device and a method of quickly positioning a local discharging part of a submarine power cable. The device comprises a high-voltage pulse generator, a towed linear array sonar, an ROV and a water mobile platform, wherein the high-voltage pulse generator is serially connected onto the connection place of the submarine power cable; the water mobile platform is provided with a monitoring center, an acoustic beacon positioning device, and a satellite positioning device; the monitoring center is respectively connected with the acoustic beacon positioning device, the satellite positioning device, a communication device, the towed linear array sonar and the ROV; and an optical imaging device, a sonar array, a manipulator and an acoustic beacon are arranged on the ROV. The general location of a suspected discharging part is determined through the towed linear array, arrival confirmation is carried out with the help of the ROV, accurate and quick positioning of the local discharging part is realized, the submarine power cable structure is lowly required, the adaptability is strong, support from a composite cable technology is not needed, and the submarine power cable construction cost is reduced.

Description

technical field [0001] The invention relates to a device and method for quickly locating a partial discharge part of a submarine power cable, belonging to the technical field of power cable detection. Background technique [0002] Submarine power cables are an important way of offshore power transmission. Compared with land power cables, submarine power cables are extremely vulnerable to failure due to the complex marine environment and marine activities. During the normal operation of the submarine power cable, due to the movement of the seabed and human development and utilization of the ocean (such as anchoring, anchoring, fishing, etc.), the insulation layer of the submarine power cable is easily damaged and its insulation performance is reduced. At the same time, due to the special environment of the ocean, submarine power cables are more susceptible to corrosion and penetration than land power cables, which will also lead to a decrease in insulation performance. The ...

AI Technical Summary

Problems solved by technology

This method has great limitations: on the one hand, a large number of sensors are deployed, which increases the construction cost of submarine power cables; on the other hand, the sensitivity of partial discharge detection is greatly affected by the limitation of the accuracy of the sensors deployed , it is very easy to miss the best maintenance time, resulting in unnecessary losses

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