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Self-adaptive multi-section distributed parameter circuit model establishment method for submarine cable performance analysis

A technology for distributing parameters and circuit models, which is applied in genetic models, CAD circuit design, genetic laws, etc., to achieve the effects of simple solution, small calculation amount, and high reliability

Pending Publication Date: 2022-05-13
ZHEJIANG HUAYUN ELECTRIC POWER ENG DESIGN CONSULTATION CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, actual submarine cables cannot be uniform transmission lines

Method used

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  • Self-adaptive multi-section distributed parameter circuit model establishment method for submarine cable performance analysis
  • Self-adaptive multi-section distributed parameter circuit model establishment method for submarine cable performance analysis
  • Self-adaptive multi-section distributed parameter circuit model establishment method for submarine cable performance analysis

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Embodiment

[0058] Embodiment: the establishment method of the self-adaptive multi-section distributed parameter circuit model of submarine cable performance analysis, such as figure 1 shown, including the following steps:

[0059] S1. First divide the cable roughly into N mother sections according to the geometric distribution, then divide each mother section into several subsections, and then connect them in series to form an equivalent circuit model for calculating the overvoltage of the submarine cable; the submarine cable is unevenly distributed, and the bracket Such structural changes will cause changes in circuit parameters. The location of the bracket in the present invention is used as the subsection point of the equivalent circuit of the submarine cable, and a simple equivalent circuit model is obtained. Establish an equivalent circuit model C based on the number of segments N, where the segment points in the equivalent circuit model C are used as key points, the kth segment in...

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Abstract

The invention discloses a self-adaptive multi-section distributed parameter circuit model establishment method for submarine cable performance analysis, which comprises the following steps: S1, roughly dividing a cable into N mother sections according to geometric distribution, dividing each mother section into a plurality of sub-sections, and connecting the sub-sections in series to form an equivalent circuit model for submarine cable overvoltage calculation; and S2, calculating distribution parameters of each section of circuit by using a finite element method, determining an optimal segmentation scheme through an adaptive genetic algorithm, and finally establishing an optimal submarine cable overvoltage calculation equivalent circuit model. The submarine cable overvoltage calculation equivalent circuit model established by the method is more in line with engineering practice, can accurately reflect the real situation of submarine cable overvoltage, and is small in calculation amount and simple in solution.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a method for establishing an adaptive multi-segment distributed parameter circuit model for submarine cable performance analysis. Background technique [0002] Submarine cables refer to cables laid in the ocean, and have now developed into an important channel connecting power grids on both sides of the strait or supplying power to islands from the mainland. Submarine cable projects are often expensive, and construction and emergency repairs are more complicated. Once a failure occurs, the system will be disconnected, and the consequences will be serious. Therefore, the safety and reliability requirements of the submarine cable system are relatively high. At present, domestic submarine cables mainly use the metal shielding layer (outer layer) as the channel of short-circuit current. This structure is difficult for the metal shielding layer to effectively protect the cable core wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/27G06F30/32G06N3/12
CPCG06F30/23G06F30/27G06F30/32G06N3/126
Inventor 覃喜周文俊吕鸣裘立峰陈仲江杨继平丁祥杨仕友夏梦
Owner ZHEJIANG HUAYUN ELECTRIC POWER ENG DESIGN CONSULTATION CO LTD
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