Analysis method of seabed photoelectrical compound cable fault type

Abstract

The invention relates to an analysis method of a seabed photoelectrical compound cable fault type, which is characterized in that the method comprises the following steps of computing an energy value of a center frequency after the frequency domain conversion of an event signal acquired at each time in the duration time of the occurrence time of a seabed photoelectrical compound cable fault, the center frequency and the duration time; computing the similarity of the energy value, the center frequency and the duration time with the corresponding parameters in a fault type database, and computing the similarity of a corresponding whole according to weight proportion relationships; and taking the fault type with the highest similarity in the fault type database as the fault type of the fault. The analysis method disclosed by the invention has the advantages that the fit function of the center frequency in the fault event in the seabed photoelectrical compound cable fault event signal, the duration time, and the energy value of the center frequency is comprehensively compared with the parameters in the fault type database, so that the fault type in the seabed photoelectrical compound cable fault event can be more accurately judged, and the accuracy of the judgment can be effectively improved.

Description

technical field [0001] The invention relates to a method for analyzing cable faults, in particular to a method for analyzing fault types of submarine photoelectric composite cables. Background technique [0002] With the development and maturity of optical fiber communication technology, the role of optical cables in communication systems is indispensable. Because optical fiber transmission data has the characteristics of large bandwidth, low loss, long life, and anti-electromagnetic interference, many communication backbone networks and important data transmission lines use optical cables as transmission media. The optical cable can also be packaged with the cable to form a photoelectric composite cable, which can transmit data and transmit power at the same time, which not only saves costs, but also reduces the number of cable laying constructions. In recent years, it has been popularized in many application environments (such as cross-sea communication and power transmis...

AI Technical Summary

Problems solved by technology

[0005] 1. The main damage mode of the anchor to the submarine cable is that the anchor penetrates the seabed to break the submarine cable or hooks the submarine cable to drag it off when the anchor is lifted, which poses a serious threat to the safety of the submarine cable.

Especially in the central continental shelf sea area of ​​the long-distance line, all kinds of ships have weak safety awareness and improper operations in the prohibited anchor area, and anchoring around the submarine photoelectric composite cable line can easily cause damage to the submarine cable

[0006] 2. Fishing boat trawling operations need to penetrate the seabed to a certain depth by weight

Therefore, the trawling gear equipment directly hooks or drags the sea cable, which will cause serious damage to the sea cable.

[0007] 3. Due to the action of tides and ocean currents, some submarine photoelectric composite cables will repeatedly collide and rub against submarine reefs. After a period of operation, the outer protective layer of the submarine photoelectric composite cable will be worn, and the internal optical cables and cables will be damaged. transmission power cable

[0008] 4. Due to the possibility of occasional submarine volcanic earthquakes, a relatively long period of strong geological disasters will cause a certain impact on the submarine photoelectric composite cable, which may damage it

[0009] These external damage methods that lead to the failure of the submarine optical-electrical composite cable are relatively similar in the original event signal, and it is difficult to distinguish them.

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