Analysis and Countermeasure of 110KV Cable Joint Defects

The rapid development of China’s economy has promoted the development of the power industry, and more and more UHV transmission lines have been put into construction. With the expansion of the cable scale, the power industry’s requirements for cable quality have also increased. In the construction of power transmission and transformation lines, the crimping of cables is an important link that affects the entire line. On the basis of the traditional crimping measurement method, this paper designs an intelligent measuring device for cable crimping, which uses STM32 microcontroller as data processor and integrates various digital measuring tools. The device is used in the cable crimping construction and quality inspection process. Improve the efficiency and quality of cable crimping construction, and realize the integration, digitization and informatization of cable crimping data measurement.

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“…The tube stuck in the process of threading the wire, and the excessive bending. affecting the normal operation of the transmission line [6].…”

Section: Introductionmentioning

confidence: 99%

Cable crimping intelligent measuring device

Guo

Fang

2023

J. Phys.: Conf. Ser.

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“…With the continuous extension of distribution network lines, the use of intermediate joints is also increasing. According to the statistics, the line faults caused by cable joint accessories account for most of the total faults [ 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Application of Modified Sn-Based Solder in Cable Intermediate Joints

Zhang

Luo

et al. 2022

Materials

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With the increasing use of underground cables, the quantity and quality of intermediate joints demanded are also increasing. The quality of the traditional crimping intermediate joint is easily affected by the actual process of the operator, which may lead to the heating of the crimping part of the wire core, affecting the insulation performance of the cable, and finally causing the joint to break. However, aluminothermic reactive technology has some problems, such as a high welding temperature and an uncontrollable reaction. In order to solve these problems, according to the brazing principle and microalloying method, the optimal content of In in Sn-1.5Cu-based solder was explored, and then the connection of the middle joint of a 10 kV cable was completed using a connecting die and electrical connection process. The contact resistance and tensile strength of the joint were tested to verify the feasibility of this method. The results show that the maximum conductivity of the solder with 3.8% and 5% In content can reach 3.236 × 106 S/m, and the highest wettability is 93.6%. Finally, the minimum contact resistance of the intermediate joint is 7.05 μΩ, which is 43% lower than that of the aluminothermic welded joint, and the tensile strength is close to that of the welded joint, with a maximum of 7174 N.

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XLPE cable joint defects measurement method based on point cloud remapping

Deng,

Liu

et al. 2024

Measurement

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Analysis and Countermeasure of 110KV Cable Joint Defects

Cited by 6 publications

References 5 publications

Cable crimping intelligent measuring device

Cable crimping intelligent measuring device

Study on the Application of Modified Sn-Based Solder in Cable Intermediate Joints

XLPE cable joint defects measurement method based on point cloud remapping

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