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

Abstract

The invention relates to a high-voltage three-core submarine cable production test method and system, and the method comprises the steps: storing a first three-core submarine cable with a first preset length in a wire core tray disposed in a vertical cabling machine, carrying out the connection of the first three-core submarine cable in the vertical cabling machine, and carrying out the cabling of the connected first three-core submarine cable; in the cabling process of the first three-core submarine cable, voltage testing is carried out on a cable core connected in the first three-core submarine cable; a second three-core submarine cable is stored in a wire core tray arranged in the vertical cabling machine, the first three-core submarine cable after the voltage test and the second three-core submarine cable are connected, cabling is carried out on the second three-core submarine cable, and a submarine cable common body with a second preset length is formed; and in the cabling process of the second three-core submarine cable, voltage testing is carried out on the continuous cable cores in the submarine cable common body. The test efficiency of the high-voltage three-core submarine cable is improved, and the test period is effectively shortened.

Description

Technical Field

[0001] This invention relates to the field of high-voltage three-core submarine cable production technology, and in particular to a high-voltage three-core submarine cable production testing method and system. Background Technology

[0002] Before high-voltage three-core submarine cables are put into use, type tests and pre-qualification tests are required to prove whether the performance of the submarine cable meets the standard requirements. For example, the current standard GB / T 41629-2022 "Rated Voltage 500 kV (Um=550 kV) Cross-linked Polyethylene Insulated Long Length AC Submarine Cables and Accessories" only specifies 500 kV single-core submarine cable products and does not clearly specify the requirements for high-voltage three-core submarine cables.

[0003] Traditionally, the production of type test and pre-qualification test samples involves a batch production approach, where type test samples are produced first, followed by pre-qualification test samples after the type test is completed. In the early stages of ultra-high voltage submarine cable development, type testing played an irreplaceable role in upgrading the technology of the samples. However, with the significant advancements in ultra-high voltage submarine cables today, the traditional production method reveals its drawbacks of low production and testing efficiency and high sample waste. Adopting a production method that simultaneously produces and submits type test and pre-qualification test samples for testing can accelerate the product certification process and facilitate the verification of the compatibility of the submarine cable and its accessories as a system. However, this simultaneous production and testing method presents challenges such as minimizing sample usage, production line layout, production process planning, and sample length design.

[0004] In summary, the existing methods, which produce and test type test samples and pre-qualification test samples separately, suffer from problems such as long processing time and low efficiency. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems of long time consumption and low efficiency in the prior art of producing and testing type test samples and pre-qualification test samples separately.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for the production and testing of high-voltage three-core submarine cables, comprising:

[0007] Step S1: The first three-core submarine cable of the first preset length is stored in the core tray built into the vertical cabling machine. The first three-core submarine cable is spliced ​​in the vertical cabling machine and then the spliced ​​first three-core submarine cable is cabled.

[0008] Step S2: During the cabling process of the first three-core submarine cable, voltage tests are performed on the spliced ​​cores in the first three-core submarine cable.

[0009] Step S3: Store the second and third core submarine cable in the core tray built into the vertical cabling machine, splice the first and third core submarine cable and the second and third core submarine cable after voltage testing, and cable the second and third core submarine cable to form a submarine cable community of the second preset length.

[0010] Step S4: During the cabling process of the second and third core submarine cable, voltage tests are performed on the spliced ​​cores in the submarine cable community.

[0011] In one embodiment of the present invention, the method of step S1 for cabling the first three-core submarine cable after splicing and the method of step S2 for cabling the second three-core submarine cable include:

[0012] The three-phase cores of the first three-core submarine cable or the second three-core submarine cable are spliced ​​using the factory splice operation platform built into the vertical cable forming machine. At the same time, the spliced ​​cores are merged into a single whole core on the No. 1 cable forming operation platform built into the vertical cable forming machine. The single whole core is guided through the traction wheel on the No. 2 cable forming operation platform built into the vertical cable forming machine to obtain the cable core of the first three-core submarine cable or the second three-core submarine cable.

[0013] In one embodiment of the present invention, the method for performing voltage testing on the spliced ​​cores of the first three-core submarine cable during the cable-making process in step S2 includes:

[0014] The core to be tested for voltage in the first three-core submarine cable is identified. A first disconnector cable terminal is set at the input end of the vertical cabling machine, and a second disconnector cable terminal is set at the output end of the vertical cabling machine. The first disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable before cabling, and the second disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable after cabling. Voltage testing of the core to be tested for voltage in the first three-core submarine cable is achieved through the first and second disconnector cable terminals.

[0015] In one embodiment of the present invention, the first preset length of the first three-core submarine cable includes:

[0016] The sum of the vertical distance between the traction wheel built into the vertical cable-forming machine and the ground, multiplied by 2, the horizontal distance between the traction wheel and the first dropper cable terminal set at the input end of the vertical cable-forming machine, and the horizontal distance between the traction wheel and the second dropper cable terminal set at the output end of the vertical cable-forming machine.

[0017] In one embodiment of the present invention, the method for step S4 of performing voltage testing on the spliced ​​cable cores in the submarine cable community includes:

[0018] During the process of splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing to form a submarine cable consortium, the first three-core submarine cable in the submarine cable consortium, which has passed through the traction wheel built into the vertical cable forming machine, undergoes an armoring process to wrap the first three-core submarine cable with an armor layer to obtain armored cores. The cable cores in the submarine cable consortium to be voltage tested are identified, and a first disconnector water cable terminal is set at the input end of the vertical cable forming machine, and a second disconnector water cable terminal is set at the armored core at the output end of the armoring process. The voltage test of the cable cores to be voltage tested in the submarine cable consortium is achieved through the first disconnector water cable terminal and the second disconnector water cable terminal.

[0019] In one embodiment of the present invention, the second preset length of the submarine cable community includes:

[0020] The sum of the vertical distance between the traction wheel built into the vertical cable forming machine and the ground, multiplied by 2, the horizontal distance between the traction wheel and the first disconnector water cable terminal set at the input end of the vertical cable forming machine, and the horizontal distance from the traction wheel to the second disconnector water cable terminal after the armoring process.

[0021] In one embodiment of the present invention, step S1, which involves splicing the first three-core submarine cable in a vertical cabling machine, and step S3, which involves splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing, further include:

[0022] The three-core submarine cable head located in the core tray is reserved for splicing length, and the three-core submarine cable tail located on the traction wheel built into the vertical cable forming machine is reserved for splicing length. The three-core submarine cable with reserved splicing length at the head and the three-core submarine cable with reserved splicing length at the tail are spliced ​​together through the factory connector.

[0023] In one embodiment of the present invention, the splicing position of the factory joint is placed in a vertical cabling machine.

[0024] In one embodiment of the present invention, when step S2 performs voltage testing on the spliced ​​cores in the first three-core submarine cable and when step S4 performs voltage testing on the spliced ​​cores in the submarine cable community, at least one phase core of the three-core submarine cable is tested.

[0025] To solve the above-mentioned technical problems, the present invention provides a high-voltage three-core submarine cable production and testing system, comprising:

[0026] First splicing and cabling module: The first three-core submarine cable of the first preset length is stored in the core tray built into the vertical cabling machine, the first three-core submarine cable is spliced ​​in the vertical cabling machine, and the spliced ​​first three-core submarine cable is cabled.

[0027] First voltage test module: During the cabling process of the first three-core submarine cable, the voltage of the spliced ​​cores in the first three-core submarine cable is tested;

[0028] Second splicing and cabling module: The second and third core submarine cables are stored in the core tray built into the vertical cabling machine. The first and third core submarine cables after voltage testing are spliced ​​together, and the second and third core submarine cables are cabled to form a submarine cable community of the second preset length.

[0029] Second voltage testing module: During the cabling process of the second three-core submarine cable, voltage testing is performed on the spliced ​​cores in the submarine cable community.

[0030] Compared with the prior art, the above-described technical solution of the present invention has the following advantages:

[0031] The high-voltage three-core submarine cable production and testing method described in this invention adopts a production method that simultaneously produces type test samples and pre-qualification test samples and submits them for testing. This method can effectively accelerate the product certification process, is conducive to verifying the compatibility of the submarine cable and accessories forming a submarine cable system, and is conducive to the rapid certification and market launch of high-voltage submarine cable products. Attached Figure Description

[0032] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] Figure 1 This is a flowchart of the method of the present invention;

[0034] Figure 2 This is a schematic diagram of the splicing and voltage testing structure of the first three-core submarine cable in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure for splicing the first three-core submarine cable and the second three-core submarine cable, and for voltage testing, in an embodiment of the present invention.

[0036] Figure 4 This is a schematic diagram showing the required length of the first three-core submarine cable in this embodiment of the invention;

[0037] Figure 5 This is a schematic diagram showing the required length of the submarine cable consortium in an embodiment of the present invention. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0039] Example 1

[0040] Before orders are delivered, high-voltage submarine cables generally need to obtain type test certification and pre-qualification test certification to prove that the product has the ability to operate stably for a long time. The type test test cycle is about 4 months and the pre-qualification test cycle is about 15 months.

[0041] For the reasons mentioned above, refer to Figure 1 , Figure 2 , Figure 3 As shown, this invention relates to a production and testing method for high-voltage three-core submarine cables, specifically as follows:

[0042] Step S1: On the vertical cable-laying machine ( Figure 2 The vertical cabling machine (located between the two disconnector water cable terminals) has a built-in core tray that stores the first three-core submarine cable of the first preset length. The first three-core submarine cable is spliced ​​in the vertical cabling machine, and then the spliced ​​first three-core submarine cable is cabled.

[0043] Step S2: During the cabling process of the first three-core submarine cable, voltage tests are performed on the spliced ​​cores in the first three-core submarine cable.

[0044] Step S3: Store the second and third core submarine cable in the core tray built into the vertical cabling machine, splice the first and third core submarine cable and the second and third core submarine cable after voltage testing, and cable the second and third core submarine cable to form a submarine cable community of the second preset length.

[0045] Step S4: During the cabling process of the second and third core submarine cable, voltage tests are performed on the spliced ​​cores in the submarine cable community.

[0046] It should be noted that the splicing and voltage testing of the first three-core submarine cable is a type test (indoor test, testing the cable under standard operating conditions), while the splicing and voltage testing of the first three-core submarine cable and the second three-core submarine cable is a pre-qualification test (outdoor test, testing the cable under outdoor wind and sun conditions).

[0047] The first three-core submarine cable needs to be divided into two parts in advance. One part is located on the traction wheel of the vertical cable forming machine, and the other part is located in the core tray. In this way, the two parts of the first three-core submarine cable can be spliced.

[0048] Furthermore, the methods for step S1 of cabling the first three-core submarine cable after splicing and step S2 of cabling the second three-core submarine cable include:

[0049] The three-phase cores of the first three-core submarine cable or the second three-core submarine cable are spliced ​​using the factory splice operation platform built into the vertical cabling machine. At the same time, the first cabling operation platform built into the vertical cabling machine merges the spliced ​​cores into a single whole core using the cabling mold. The second cabling operation platform built into the vertical cabling machine guides the single whole core through the traction wheel (equivalent to a steering function) to obtain the cabling core of the first three-core submarine cable or the second three-core submarine cable.

[0050] Further, please refer to Figure 2 Step S2, which involves voltage testing of the spliced ​​cores of the first three-core submarine cable during the cable-making process, includes:

[0051] The core to be tested for voltage in the first three-core submarine cable is identified. A first disconnector cable terminal is set at the input end of the vertical cabling machine, and a second disconnector cable terminal (the second disconnector cable terminal is also connected to a reactor and a voltage divider) is set at the output end of the vertical cabling machine. The first disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable before cabling, and the second disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable after cabling. Voltage testing of the core to be tested for voltage in the first three-core submarine cable is achieved through the first and second disconnector cable terminals.

[0052] Further, please refer to Figure 4 The first preset length of the first three-core submarine cable includes:

[0053] The first preset length of the first three-core submarine cable is y+y+x+x (unit: meters). This is calculated by multiplying the vertical distance y between the traction wheel built into the vertical cable forming machine and the ground by 2, the horizontal distance x between the traction wheel and the first disconnector submarine cable terminal set at the input end of the vertical cable forming machine, and the horizontal distance x between the traction wheel and the second disconnector submarine cable terminal set at the output end of the vertical cable forming machine.

[0054] Further, please refer to Figure 3 Step S4, the method for performing voltage testing on the spliced ​​cable cores in the submarine cable community, includes:

[0055] During the process of splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing to form a submarine cable consortium, the first three-core submarine cable in the consortium, which has passed through the traction wheel built into the vertical cable forming machine, undergoes an armoring process (usually including an armoring machine, an armoring mold, and finished product traction) to wrap the first three-core submarine cable with an armor layer to obtain armored cores. The cable cores in the submarine cable consortium to be voltage tested are identified, and a first disconnector hydroelectric cable terminal is set at the input end of the vertical cable forming machine, and a second disconnector hydroelectric cable terminal is set at the armored core at the output end of the armoring process (the second disconnector hydroelectric cable terminal is also connected to a reactor and a voltage divider). The voltage test of the cable cores to be voltage tested in the submarine cable consortium is achieved through the first disconnector hydroelectric cable terminal and the second disconnector hydroelectric cable terminal.

[0056] Further, please refer to Figure 5 The second pre-defined length of the submarine cable community includes:

[0057] The second preset length of the final submarine cable community is the sum of the following: the vertical distance y between the traction wheel built into the vertical cable forming machine and the ground, the horizontal distance x between the traction wheel and the first disconnector cable terminal set at the input end of the vertical cable forming machine, and the horizontal distance x+xk from the traction wheel to the second disconnector cable terminal after the armoring process.

[0058] It should be noted that in actual production, the armoring process (which usually includes armoring machine, armoring mold, and finished product traction) is generally 50 meters long.

[0059] Furthermore, step S1, which involves splicing the first three-core submarine cable in the vertical cabling machine, and step S3, which involves splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing, also include:

[0060] The three-core submarine cable head located in the core tray is reserved for splicing length, and the three-core submarine cable tail located on the traction wheel built into the vertical cable forming machine is reserved for splicing length. The three-core submarine cable with reserved splicing length at the head and the three-core submarine cable with reserved splicing length at the tail are spliced ​​together through the factory connector.

[0061] It should be noted that in this embodiment, the factory splicing position is placed within the vertical cabling machine. Traditional splicing techniques involve splicing two reels of conductors to be spliced ​​from a ground-based operating room, then winding them onto a cable reel for voltage testing. Once successful, the spliced ​​conductors on the cable reel are laid out and guided into the tray of the vertical cabling machine for further vertical cabling. However, this embodiment places the factory splicing position within the factory splicing platform of the vertical cabling machine, reducing the need for one additional winding, laying out, and guiding of the conductors after splicing, thus improving operational efficiency. Reducing the number of times the conductors are guided helps maintain stable conductor performance.

[0062] For the same model of vertical cable-making machine, this invention can save approximately 30 meters of submarine cable length compared to the traditional method, about 8%. The traditional method involves batch production of type testing and pre-qualification test samples, requiring two start-ups and shutdowns during production. The start-up and shutdown operations are the most time-consuming operations in the vertical cable-making process. This invention only requires one start-up and shutdown, reducing the workload of start-up and shutdown by half.

[0063] Furthermore, when performing voltage tests on the spliced ​​cores in the first three-core submarine cable in step S2, and when performing voltage tests on the spliced ​​cores in the submarine cable community in step S4, at least one phase core of the three-core submarine cable is tested.

[0064] Example 2

[0065] This embodiment provides a high-voltage three-core submarine cable production and testing system, including:

[0066] First splicing and cabling module: The first three-core submarine cable of the first preset length is stored in the core tray built into the vertical cabling machine, the first three-core submarine cable is spliced ​​in the vertical cabling machine, and the spliced ​​first three-core submarine cable is cabled.

[0067] First voltage test module: During the cabling process of the first three-core submarine cable, the voltage of the spliced ​​cores in the first three-core submarine cable is tested;

[0068] Second splicing and cabling module: The second and third core submarine cables are stored in the core tray built into the vertical cabling machine. The first and third core submarine cables after voltage testing are spliced ​​together, and the second and third core submarine cables are cabled to form a submarine cable community of the second preset length.

[0069] Second voltage testing module: During the cabling process of the second three-core submarine cable, voltage testing is performed on the spliced ​​cores in the submarine cable community.

[0070] Example 3

[0071] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the high-voltage three-core submarine cable production and testing method described in Embodiment 1.

[0072] Example 4

[0073] This embodiment provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the high-voltage three-core submarine cable production and testing method described in Embodiment 1.

[0074] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0075] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0076] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0077] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0078] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0079] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A production and testing method for a high-voltage three-core submarine cable, characterized in that: include: Step S1: The first three-core submarine cable of the first preset length is stored in the core tray built into the vertical cabling machine. The first three-core submarine cable is spliced ​​in the vertical cabling machine and then the spliced ​​first three-core submarine cable is cabled. Step S2: During the cabling process of the first three-core submarine cable, voltage tests are performed on the spliced ​​cores in the first three-core submarine cable. Step S3: Store the second and third core submarine cable in the core tray built into the vertical cabling machine, splice the first and third core submarine cable and the second and third core submarine cable after voltage testing, and cable the second and third core submarine cable to form a submarine cable community of the second preset length. Step S4: During the cabling process of the second and third core submarine cable, voltage tests are performed on the spliced ​​cores in the submarine cable community.

2. The high-voltage three-core submarine cable production and testing method according to claim 1, characterized in that: The methods for step S1 of cabling the first three-core submarine cable after splicing and step S2 of cabling the second three-core submarine cable include: The three-phase cores of the first three-core submarine cable or the second three-core submarine cable are spliced ​​using the factory splice operation platform built into the vertical cable forming machine. At the same time, the spliced ​​cores are merged into a single whole core on the No. 1 cable forming operation platform built into the vertical cable forming machine. The single whole core is guided through the traction wheel on the No. 2 cable forming operation platform built into the vertical cable forming machine to obtain the cable core of the first three-core submarine cable or the second three-core submarine cable.

3. The high-voltage three-core submarine cable production and testing method according to claim 1, characterized in that: The method for voltage testing of the spliced ​​cores of the first three-core submarine cable during the cable-making process in step S2 includes: The core to be tested for voltage in the first three-core submarine cable is identified. A first disconnector cable terminal is set at the input end of the vertical cabling machine, and a second disconnector cable terminal is set at the output end of the vertical cabling machine. The first disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable before cabling, and the second disconnector cable terminal is used to connect to the core to be tested for voltage in the first three-core submarine cable after cabling. Voltage testing of the core to be tested for voltage in the first three-core submarine cable is achieved through the first and second disconnector cable terminals.

4. The high-voltage three-core submarine cable production and testing method according to claim 3, characterized in that: The first preset length of the first three-core submarine cable includes: The sum of the vertical distance between the traction wheel built into the vertical cable-forming machine and the ground, multiplied by 2, the horizontal distance between the traction wheel and the first dropper cable terminal set at the input end of the vertical cable-forming machine, and the horizontal distance between the traction wheel and the second dropper cable terminal set at the output end of the vertical cable-forming machine.

5. The high-voltage three-core submarine cable production and testing method according to claim 1, characterized in that: The method for voltage testing of the spliced ​​cable cores in the submarine cable community in step S4 includes: During the process of splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing to form a submarine cable consortium, the first three-core submarine cable in the submarine cable consortium, which has passed through the traction wheel built into the vertical cable forming machine, undergoes an armoring process to wrap the first three-core submarine cable with an armor layer to obtain armored cores. The cable cores in the submarine cable consortium to be voltage tested are identified, and a first disconnector water cable terminal is set at the input end of the vertical cable forming machine, and a second disconnector water cable terminal is set at the armored core at the output end of the armoring process. The voltage test of the cable cores to be voltage tested in the submarine cable consortium is achieved through the first disconnector water cable terminal and the second disconnector water cable terminal.

6. The high-voltage three-core submarine cable production and testing method according to claim 5, characterized in that: The second preset length of the submarine cable community includes: The sum of the vertical distance between the traction wheel built into the vertical cable forming machine and the ground, multiplied by 2, the horizontal distance between the traction wheel and the first disconnector water cable terminal set at the input end of the vertical cable forming machine, and the horizontal distance from the traction wheel to the second disconnector water cable terminal after the armoring process.

7. The high-voltage three-core submarine cable production and testing method according to claim 1, characterized in that: Step S1, which involves splicing the first three-core submarine cable in the vertical cable-forming machine, and step S3, which involves splicing the first three-core submarine cable and the second three-core submarine cable after voltage testing, further include: The three-core submarine cable head located in the core tray is reserved for splicing length, and the three-core submarine cable tail located on the traction wheel built into the vertical cable forming machine is reserved for splicing length. The three-core submarine cable with reserved splicing length at the head and the three-core submarine cable with reserved splicing length at the tail are spliced ​​together through the factory connector.

8. The high-voltage three-core submarine cable production and testing method according to claim 7, characterized in that: The connection point of the factory joint is placed in the vertical cabling machine.

9. The high-voltage three-core submarine cable production and testing method according to claim 1, characterized in that: When performing voltage testing on the spliced ​​cores in the first three-core submarine cable in step S2, and when performing voltage testing on the spliced ​​cores in the submarine cable community in step S4, at least one phase core of the three-core submarine cable is tested.

10. A high-voltage three-core submarine cable production and testing system, characterized in that: include: First splicing and cabling module: The first three-core submarine cable of the first preset length is stored in the core tray built into the vertical cabling machine, the first three-core submarine cable is spliced ​​in the vertical cabling machine, and the spliced ​​first three-core submarine cable is cabled. First voltage test module: During the cabling process of the first three-core submarine cable, the voltage of the spliced ​​cores in the first three-core submarine cable is tested; Second splicing and cabling module: The second and third core submarine cables are stored in the core tray built into the vertical cabling machine. The first and third core submarine cables after voltage testing are spliced ​​together, and the second and third core submarine cables are cabled to form a submarine cable community of the second preset length. Second voltage testing module: During the cabling process of the second three-core submarine cable, voltage testing is performed on the spliced ​​cores in the submarine cable community.

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