Monitoring device and monitoring method for current capacity of maritime platform cable

Abstract

The invention discloses a monitoring device and a monitoring method for the current capacity of a maritime platform cable. The monitoring device comprises a power distribution cabinet, an optical-fiber grating demodulation monitoring system, a current acquisition device, transmission and relay equipment and a temperature sensor, wherein the current acquisition device is connected with the power distribution cabinet to be used for transmitting the current which is collected by the current acquisition device into the transmission and relay equipment, and an electrical signal is converted into a light signal through the transmission and relay equipment; the temperature sensor is laid on the surface of a cable, and tail fibers of the temperature sensor are gathered into an optical fiber distribution box to be connected into the optical-fiber grating demodulation monitoring system by the optical fiber distribution box through an optical cable. The monitoring method adopts the following steps of 1, collecting real-time current; 2, collecting real-time temperature; 3, carrying out calculation on the temperature and the current capacity of a conductive wire core; 4, carrying out judgment on monitoring data. According to the monitoring device and the monitoring method, dispatch and adjustment on the load of the cable can be carried out, safety in operation of the cable is guaranteed, the problem of power supply in an emergency status is solved, and reasonable utilization of the cable is realized.

Description

technical field [0001] The invention relates to a method for monitoring the ampacity of a cable, in particular to a monitoring device and a method for monitoring the ampacity of an offshore platform cable. It belongs to the field of marine engineering. Background technique [0002] With the continuous deepening of the transformation and construction of offshore platforms, the use of power cables has increased significantly. Therefore, the operation management, monitoring and maintenance of power cables have become more and more important, and the workload has also increased significantly. In order to ensure the service life and safety of the cable lines put into operation, the cable lines are often operated at a low load, resulting in a waste of transmission capacity, which is very uneconomical. Moreover, since the rated ampacity of the cable is calculated on the assumption that the operating environment is the worst, its value is relatively small, so the utilization rate o...

AI Technical Summary

Problems solved by technology

In the stage of power cable selection and laying, since it is impossible to fully consider the actual operating environment, it is usually carried out according to the standard ambient temperature, which will cause the cable to run in overheating when the ambient temperature is high. state, reducing the life of the cable run

[0006] In actual work, in order to avoid the above situation, it is solved by properly retaining the load capacity, but this makes the use of cables uneconomical.

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