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Method for modeling, calculating and analyzing temperature fields of photoelectric composite submarine cable

A technology of photoelectric composite and analysis method, which is applied in calculation, electrical digital data processing, special data processing application, etc. It can solve the problems of power supply voltage fluctuation, inability to directly measure conductor temperature, thermal breakdown, etc., and achieve the effect of high accuracy

Inactive Publication Date: 2013-01-16
SHANGHAI MARITIME UNIVERSITY
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Problems solved by technology

[0002] During the operation of the photoelectric composite submarine cable, thermal breakdown will be caused by factors such as the aging of the insulating layer, excessive power harmonics, poor intermediate joints, power supply voltage fluctuations, and heavy loads. Therefore, it is necessary to monitor the conductor temperature of the photoelectric composite submarine cable. monitoring, but because the photoelectric composite submarine cable is laid in the seabed, it is impossible to directly measure the temperature of the conductor

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  • Method for modeling, calculating and analyzing temperature fields of photoelectric composite submarine cable

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Embodiment Construction

[0039] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.

[0040] A method for modeling, calculating and analyzing the temperature field of a photoelectric composite submarine cable, comprising the following steps:

[0041] Step 1: Obtain the physical structure size drawing of the photoelectric composite submarine cable 1, and establish its geometric model. In the ANSYS finite element analysis software, according to the physical structure size diagram of the photoelectric composite submarine cable, its geometric model is established. In this embodiment, the structure diagram of the submarine cable model HYJQ41-26 / 35KV-3*185+SM3*10C is as follows figure 1 shown.

[0042] Step 2: Obtain the material parameters of each component material of the optoelectronic composite submarine cable through an external Brillouin optical time domain analysis (BOTDA) device. In this embod...

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Abstract

The invention discloses a method for modeling, calculating and analyzing temperature fields of a photoelectric composite submarine cable. The method comprises the following steps of: 1, establishing a geometric model of the photoelectric composite submarine cable in finite element analysis software ANSYS; 2, inputting material parameters of each composition material of the photoelectric composite submarine cable into the finite-element analysis software ANSYS, and establishing a finite element model of the photoelectric composite submarine cable; 3, setting the value range of hot load working current, environment temperature and convection heat exchange coefficients of the photoelectric composite submarine cable; 4, modeling an integral steady-state temperature field of the photoelectric composite submarine cable; 5, modeling a local heating steady-state temperature field of the photoelectric composite submarine cable; and 6, modeling a transient-state temperature field of the photoelectric composite submarine cable. The calculation accuracy of the temperature fields of the photoelectric composite submarine cable under complex structure and environment conditions is extremely high, a nonlinear mapping relation between a conductor and optical fiber temperature of the photoelectric composite submarine cable can be obtained without a large number of experiment data, and the method is simple and convenient.

Description

technical field [0001] The present invention relates to a distributed real-time monitoring and measurement technology for photoelectric composite submarine cables, in particular to a method for modeling, calculating and analyzing the temperature field of photoelectric composite submarine cables, specifically how to use the optical fiber temperature provided by Brillouin Optical Time Domain Analysis (BOTDA) equipment Data to obtain the method of the cable conductor temperature of the photoelectric composite submarine cable. Background technique [0002] During the operation of the photoelectric composite submarine cable, thermal breakdown will be caused by factors such as the aging of the insulating layer, excessive power harmonics, poor intermediate joints, power supply voltage fluctuations, and heavy loads. Therefore, it is necessary to monitor the conductor temperature of the photoelectric composite submarine cable. However, since the photoelectric composite submarine cabl...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘频频安博文周灵周蓉蓉
Owner SHANGHAI MARITIME UNIVERSITY
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