CN-121978430-A - High-voltage three-core submarine cable production test method and system

CN121978430ACN 121978430 ACN121978430 ACN 121978430ACN-121978430-A

Abstract

The invention relates to a high-voltage three-core submarine cable production test method and system, wherein the method comprises the steps of storing a first three-core submarine cable with a first preset length in a wire core tray arranged in a vertical cable forming machine, connecting the first three-core submarine cable in the vertical cable forming machine, forming a cable of the connected first three-core submarine cable, carrying out voltage test on a cable core connected in the first three-core submarine cable in the cable forming process of the first three-core submarine cable, storing a second three-core submarine cable in the wire core tray arranged in the vertical cable forming machine, connecting the first three-core submarine cable and the second three-core submarine cable after the voltage test, forming a submarine cable complex with a second preset length, and carrying out voltage test on the cable core connected in the submarine cable complex in the cable forming process of the second three-core submarine cable. The invention improves the testing efficiency of the high-voltage three-core submarine cable and effectively shortens the testing period.

Inventors

QIAO YUCHANG
ZHANG MENGKE
GUO CHUNYANG
SUN XIAOCHEN
Bai Yanghe
Cao Wucheng
CHEN KAI
SONG GUANGHUI

Assignees

江苏亨通高压海缆有限公司

Dates

Publication Date: 20260505
Application Date: 20251225

Claims (10)

1. A high-voltage three-core submarine cable production test method is characterized by comprising the following steps: s1, a first three-core submarine cable with a first preset length is stored in a wire core tray arranged in a vertical cabling machine, the first three-core submarine cable is connected in the vertical cabling machine, and the connected first three-core submarine cable is cabled; step S2, in the cabling process of the first three-core submarine cable, carrying out voltage test on cable cores connected in the first three-core submarine cable; s3, a second three-core submarine cable is stored in a wire core tray arranged in the vertical cable forming machine, the first three-core submarine cable after voltage testing and the second three-core submarine cable are connected, and the second three-core submarine cable is formed into a submarine cable aggregate with a second preset length; And S4, in the process of cabling the second three-core submarine cable, carrying out voltage test on the cable cores connected in the submarine cable community.
2. The method for testing high-voltage three-core submarine cable according to claim 1, wherein said step S1 of cabling the first three-core submarine cable after connection and said step S2 of cabling the second three-core submarine cable comprise: The three-phase cable cores in the first three-core submarine cable or the second three-core submarine cable are connected through a factory connector in a factory connector operation platform arranged in the vertical cable forming machine, meanwhile, the connected cable cores are combined into an integral cable core in a first cabling operation platform arranged in the vertical cable forming machine, and the integral cable core is guided to pass through a traction wheel in a second cabling operation platform arranged in the vertical cable forming machine, so that a cable core of the first three-core submarine cable or the second three-core submarine cable is obtained.
3. The method for testing the production of the high-voltage three-core submarine cable according to claim 1, wherein the step S2 is characterized in that the method for testing the voltage of the cable core connected with the first three-core submarine cable in the cabling process comprises the following steps: The cable core to be tested in the first three-core submarine cable is determined, a first de-ionized water cable terminal is arranged at the input end of the vertical cable forming machine, a second de-ionized water cable terminal is arranged at the output end of the vertical cable forming machine, the first de-ionized water cable terminal is used for being connected with a cable core to be tested in the first three-core submarine cable before being cabled, the second de-ionized water cable terminal is used for being connected with a cable core to be tested in the first three-core submarine cable after being cabled, and the cable core to be tested in the first three-core submarine cable is subjected to voltage testing through the first de-ionized water cable terminal and the second de-ionized water cable terminal.
4. The method for testing high-voltage three-core submarine cable production according to claim 3, wherein the first preset length of the first three-core submarine cable comprises the following steps: The vertical distance between the traction wheel arranged in the vertical cabling machine and the ground is multiplied by 2, the horizontal distance between the traction wheel and the first deionized water cable terminal arranged at the input end of the vertical cabling machine, and the horizontal distance between the traction wheel and the second deionized water cable terminal arranged at the output end of the vertical cabling machine.
5. The method for testing the production of the high-voltage three-core submarine cable according to claim 1, wherein said step S4 is a method for testing the voltage of the cable cores connected in the submarine cable community, and comprises the following steps: And determining a cable core to be tested in the sea cable community, setting a first water-break-away cable terminal at the input end of the vertical cable forming machine, and setting a second water-break-away cable terminal at the armoured cable core at the output end of the armouring procedure, wherein the cable core to be tested in the sea cable community is subjected to voltage testing through the first water-break-away cable terminal and the second water-break-away cable terminal.
6. The method for testing high-voltage three-core submarine cable production according to claim 5, wherein said second preset length of submarine cable community comprises: The vertical distance between the built-in traction wheel of the vertical cabling machine and the ground is multiplied by 2, the horizontal distance between the traction wheel and the first deionized water cable terminal arranged at the input end of the vertical cabling machine is multiplied by the sum of the horizontal distances from the traction wheel to the second deionized water cable terminal through the armor process.
7. The method for testing high voltage three-core submarine cable production according to claim 1, wherein the step S1 is further performed when the first three-core submarine cable is spliced in the vertical cable forming machine, and the step S3 is performed when the first three-core submarine cable and the second three-core submarine cable after the voltage test are spliced, and the method is further performed: Reserving connection length at the head of the three-core submarine cable positioned in the cable core tray, reserving connection length at the tail of the three-core submarine cable positioned on a traction wheel arranged in the vertical cable forming machine, and connecting the three-core submarine cable with the reserved connection length at the head and the three-core submarine cable with the reserved connection length at the tail through a factory joint.
8. The method for testing high-voltage three-core submarine cable production according to claim 7, wherein the connection position of the factory joint is placed in a vertical cable forming machine.
9. The method for testing high-voltage three-core submarine cable production according to claim 1, wherein step S2 tests at least one phase cable core in the three-core submarine cable when the voltage test is performed on the cable core connected in the first three-core submarine cable and step S4 tests the voltage test performed on the cable core connected in the submarine cable community.
10. The high-voltage three-core submarine cable production test system is characterized by comprising the following components: the first splicing and cabling module is used for storing a first three-core submarine cable with a first preset length in a wire core tray arranged in the vertical cabling machine, splicing the first three-core submarine cable in the vertical cabling machine and cabling the spliced first three-core submarine cable; The first voltage testing module is used for testing the voltage of the cable cores connected in the first three-core submarine cable in the cabling process of the first three-core submarine cable; The second connection and cabling module is used for storing a second three-core submarine cable in a wire core tray arranged in the vertical cabling machine, connecting the first three-core submarine cable after voltage testing with the second three-core submarine cable, and cabling the second three-core submarine cable to form a submarine cable community with a second preset length; And the second voltage testing module is used for testing the voltage of the cable cores connected in the submarine cable community in the process of cabling the second three-core submarine cable.

Description

High-voltage three-core submarine cable production test method and system Technical Field The invention relates to the technical field of high-voltage three-core submarine cable production, in particular to a high-voltage three-core submarine cable production test method and system. Background Before the high-voltage three-core submarine cable is put into use, a pattern test and a pre-identification test are required to be carried out to prove whether the submarine cable performance meets the standard requirement, such as the current standard GB/T41629-2022, rated voltage 500 kV (um=550 kV), crosslinked polyethylene insulating large-length alternating current submarine cable and accessories, only 500 kV single-core submarine cable products are specified, and the requirement of the high-voltage three-core submarine cable is not explicitly specified. When the traditional method is used for producing the model test sample and the pre-identification test sample, the model test sample is produced first, and after the model test sample is finished, the batch production scheme of the pre-identification test sample is produced again. In the early development stage of the field of the ultra-high-voltage submarine cable, the model test is firstly performed, so that the model test has an irreplaceable effect on the technical upgrading of the sample. The existing ultra-high voltage submarine cable has been greatly improved, the defects of low production test efficiency and large sample waste can be highlighted by adopting a traditional production method, and the production method of synchronously producing and synchronously sending and detecting type test samples and pre-identification test samples can accelerate the product authentication process, thereby being beneficial to verifying the suitability of submarine cable and accessory-combined submarine cable systems. However, when the method of synchronously producing and sending the type test sample and the pre-identification test sample is adopted, the problems of reducing the sample consumption, arranging the production line, planning the production flow and designing the sample length are solved. In summary, the existing method separately produces and separately inspects the model test sample and the pre-identification test sample, and has the problems of long time consumption and low efficiency. Disclosure of Invention Therefore, the invention aims to solve the technical problems of long time consumption and low efficiency of separate production and separate inspection of type test samples and pre-identification test samples in the prior art. In order to solve the technical problems, the invention provides a high-voltage three-core submarine cable production test method, which comprises the following steps: s1, a first three-core submarine cable with a first preset length is stored in a wire core tray arranged in a vertical cabling machine, the first three-core submarine cable is connected in the vertical cabling machine, and the connected first three-core submarine cable is cabled; step S2, in the cabling process of the first three-core submarine cable, carrying out voltage test on cable cores connected in the first three-core submarine cable; s3, a second three-core submarine cable is stored in a wire core tray arranged in the vertical cable forming machine, the first three-core submarine cable after voltage testing and the second three-core submarine cable are connected, and the second three-core submarine cable is formed into a submarine cable aggregate with a second preset length; And S4, in the process of cabling the second three-core submarine cable, carrying out voltage test on the cable cores connected in the submarine cable community. In one embodiment of the present invention, the method for cabling the first three-core submarine cable after the connection in the step S1 and cabling the second three-core submarine cable in the step S2 includes: The three-phase cable cores in the first three-core submarine cable or the second three-core submarine cable are connected through a factory connector in a factory connector operation platform arranged in the vertical cable forming machine, meanwhile, the connected cable cores are combined into an integral cable core in a first cabling operation platform arranged in the vertical cable forming machine, and the integral cable core is guided to pass through a traction wheel in a second cabling operation platform arranged in the vertical cable forming machine, so that a cable core of the first three-core submarine cable or the second three-core submarine cable is obtained. In one embodiment of the present invention, the method for performing voltage testing on the cable core connected by the first three-core submarine cable in the cabling process in step S2 includes: The cable core to be tested in the first three-core submarine cable is determined, a first de-ionized water cable terminal is arranged at the input end