Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite sea cable current-carrying capacity calculating method

A technology of flow calculation and current carrying capacity, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problem of not mentioning the calculation method of current carrying capacity of optoelectronic composite submarine cables, etc.

Inactive Publication Date: 2013-10-02
SHANGHAI MARITIME UNIVERSITY +3
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the calculation of cable ampacity is generally based on the IEC60287 standard, but this standard only meets the calculation of ampacity under simple environmental conditions. When the actual cable laying environment is different from its set benchmark parameter values, a large number of tests are required. There are certain limitations in determining the corresponding correction coefficient
And IEC60287 does not mention the calculation method of the current carrying capacity of the photoelectric composite submarine cable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite sea cable current-carrying capacity calculating method
  • Composite sea cable current-carrying capacity calculating method
  • Composite sea cable current-carrying capacity calculating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] Such as figure 1 As shown, the present invention discloses a method for calculating the ampacity of a composite submarine cable, the method comprising the following steps:

[0030] Step 1. Establish a geometric model of the photoelectric composite submarine cable according to its structural parameters and laying environment.

[0031] Such as figure 2 As shown, it is a schematic diagram of the overall structure of the composite submarine cable. The composite submarine cable includes three submarine cables arranged in parallel, an optical cable 14 arranged on one side of the submarine cable, and a protective layer covering the submarine cable and the optical cable 14 .

[0032] The protective layer from the inside to the outside is the wrapping cushion layer 9, the inner impregnated outer covering layer 12, the steel wire armor layer 10,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a composite sea cable current-carrying capacity calculating method. The method comprises establishing a geometrical model; outputting physical property parameters of composition materials; performing grid division and establishing a finite element model of a photoelectric composite sea cable; setting value ranges of environment temperatures and heat convection coefficients, an initial environment temperature, an initial heat convection coefficient, a photoelectric composite sea cable working current; calculating temperature field distribution of the photoelectric composite sea cable and acquiring the conductor temperature and the optical fiber temperature in the photoelectric composite sea cable; determining whether |TC-t| is larger than epsilon or not, determining whether TC-t is larger than 0 or not; storing the environment temperatures, the heat convection coefficients, the current-carrying capacity and the optical fiber temperature to a current-carrying capacity database; adjusting the parameters so as to enable the heat coefficient h to be equal to h2; adjusting the parameters so as to enable the environment temperature T to be equal to T2; and calculating the current-carrying capacity of the photoelectric composite sea cable at the optical fiber temperature. The method can flexibly and dynamically adjust the current-carrying capacity of the photoelectric composite sea cable according to season changes and environmental condition changes so that the capability of transmitting electric energy of the photoelectric composite sea cable can be exerted to the utmost.

Description

technical field [0001] The invention relates to a technology for real-time temperature monitoring of a photoelectric composite submarine cable, in particular to a method for calculating the dynamic carrying capacity of a photoelectric composite submarine cable. Background technique [0002] The photoelectric composite submarine cable is responsible for providing power supply and communication between various platforms in offshore oil exploitation. It is the lifeline of each platform, and its safety status is very important to ensure the normal operation of each production platform. Therefore, how to reasonably determine the ampacity of the optoelectronic composite submarine cable on the premise of ensuring its long-term safe and reliable operation is of great significance. [0003] At present, the calculation of cable ampacity is generally based on the IEC60287 standard, but this standard only meets the calculation of ampacity under simple environmental conditions. When the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 李毅魏澈刘晓亮何玉仓高红武刘进辉王新华刘频频安博文周灵陈元林周蓉蓉王晓峰
Owner SHANGHAI MARITIME UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com