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Cable current-carrying capacity evaluation method and device, electronic equipment and storage medium

A cable and flow technology, which is applied in data processing applications, instruments, computer material science, etc., can solve problems such as the inconsistency of cable current carrying capacity calculation results, the difficulty of accurately evaluating the surrounding soil thermal resistivity, etc., and achieve the effect of ensuring current carrying capacity

Pending Publication Date: 2022-07-22
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an evaluation method, device, electronic equipment and storage medium for cable ampacity, which solves the problem that the calculation results of cable ampacity are obviously different from the test results due to the difficulty in accurately evaluating the thermal resistivity of the surrounding soil in current transmission cable lines. technical issues

Method used

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  • Cable current-carrying capacity evaluation method and device, electronic equipment and storage medium
  • Cable current-carrying capacity evaluation method and device, electronic equipment and storage medium
  • Cable current-carrying capacity evaluation method and device, electronic equipment and storage medium

Examples

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Embodiment 1

[0045] Example 1, please refer to figure 1 , figure 1 It is a flowchart of the first embodiment of a method for evaluating the current carrying capacity of a cable according to the present invention, including:

[0046]Step S101, obtaining detailed information on the position of the highest temperature point on the surface of the cable; the detailed information includes the temperature information on the cable surface, the actual structure of the cable at the highest point position, the surrounding laying environment information at the highest point position, and the temperature time series record corresponding to the real-time cable. load data;

[0047] Step S102, establishing a temperature field finite element model according to the actual structure of the cable and the surrounding laying environment information;

[0048] Step S103, inputting the real-time load data of the cable into the finite element model of the temperature field, and obtaining the finite element calcul...

Embodiment 2

[0051] Example 2, please refer to figure 2 , figure 2 It is a flowchart of a method for evaluating the current carrying capacity of a cable according to the present invention, including:

[0052] Step S201, obtaining detailed information on the position of the highest temperature point on the surface of the cable; the detailed information includes the temperature information on the cable surface, the actual structure of the cable at the highest point position, the surrounding laying environment information at the highest point position, and the thermal characteristic parameters and temperature of the soil around the cable. Time series records corresponding real-time load data of cables;

[0053] In the embodiment of the present invention, the detailed information of the position of the highest temperature point on the surface of the cable is obtained; the detailed information includes the temperature information of the cable surface, the actual structure of the cable at the...

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Abstract

The invention discloses a cable current-carrying capacity evaluation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the detailed information of the temperature highest point position of the surface of a cable, the detailed information comprises cable surface temperature information, cable actual structure at the highest point position, surrounding laying environment information and cable real-time load data corresponding to the temperature time sequence record, and establishing a temperature field finite element model according to the cable actual structure and the surrounding laying environment information; inputting the real-time load data of the cable into the temperature field finite element model to obtain a cable surface temperature finite element calculation result and a cable conductor temperature calculation result, and performing evaluation based on the cable surface temperature finite element calculation result, the cable conductor temperature calculation result and the cable surface temperature information in combination with a preset threshold value to obtain the cable surface temperature. And obtaining a cable line current-carrying capacity evaluation result. According to the method for evaluating the current-carrying capacity of the cable, it is guaranteed that the current-carrying capacity of a power transmission cable line is fully exerted.

Description

technical field [0001] The present invention relates to the technical field of calculating the current carrying capacity of a cable, and in particular, to a method, device, electronic device and storage medium for evaluating the current carrying capacity of a cable. Background technique [0002] With the continuous development of my country's economy and society, in order to solve the increasingly serious contradiction between urban construction and electric power construction, the traditional overhead lines are gradually replaced by underground cables. The current-carrying capacity of the transmission cable load dispatch is mainly determined by the current-carrying capacity, which is not only related to the structural parameters of the cable body and the thermal characteristic parameters of each part, but also closely related to the surrounding laying conditions, such as the thermal resistivity and thermal diffusion of the soil around the cable. Rate. [0003] At present, ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G16C60/00
CPCG06Q10/0639G06Q50/06G16C60/00
Inventor 崔江静吴宏晓廖雁群南保峰孙廷玺黄顺涛李洪杰
Owner GUANGDONG POWER GRID CO LTD
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