A power supply and distribution system for an offshore launch platform

Abstract

One or more embodiments of the present specification disclose a power supply and distribution system for an offshore launch platform, which adopts a dual-redundant hot backup power supply architecture, and adopts a mode of multi-unit grid-connected power generation or dual-unit separate power supply in the process. The power distribution adopts a dual-path completely isolated power distribution method. When a single set of products fails, the other set of products can complete the action process without reducing the indicators. Under non-mission conditions, a single unit or AC power supply is adopted to reduce system consumption and reduce the cumulative operating time of a single device, improve product reliability, reduce operation and maintenance costs, and meet the use requirements of reliable power supply under unsecured conditions; according to the use requirements, the system is embedded with a set of independent power supply and distribution electronic systems, in which the platform end supplies power to winches, frequency converters and other equipment that are not convenient to move, and the erection frame end can adapt to various transportation conditions according to the use requirements, and can ensure the continuous power supply capacity under transportation or long-term insulation conditions, meet the use requirements, and improve the mobility and flexibility of the product.

Description

Technical Field

[0001] This document relates to the field of power supply and distribution, and in particular to a power supply and distribution system for an offshore launch platform. Background Art

[0002] At present, with the rapid and high-quality development of social economy, people's demand for space launch activities is increasing. Sea launch can flexibly choose the launch point and landing area, which can effectively solve the safety problems of rocket flight area and debris landing area, and greatly reduce the evacuation cost of land launch personnel; in addition, the sea launch platform can be moved over a large range, and launching in low-latitude areas near the equator can maximize the use of the earth's rotation speed, save propellant consumption, thereby improving the carrying capacity and reducing the launch cost.

[0003] However, when the power supply and distribution system performs the offshore launch mission, as the power source for all electrical equipment on the launch platform, its primary task is to ensure continuous power supply under any working conditions. When the current offshore launch platform power supply and distribution system encounters problems such as unit shutdown, busbar short circuit, single load circuit failure, etc., it may cause serious consequences such as power outage of the entire system or the inability to smoothly carry out the launch process. Summary of the invention

[0004] The purpose of one or more embodiments of the present specification is to provide a power supply and distribution system for an offshore launch platform to improve the high reliability of the power supply and distribution system under unsecured conditions at sea.

[0005] To solve the above technical problems, one or more embodiments of this specification are implemented as follows:

[0006] In the first aspect, a power supply and distribution system for an offshore launch platform is proposed, comprising: a fixed gantry, an erection gantry and an erection control cabin; wherein:

[0007] The fixed stand at least includes: a first generator set, a second generator set, a main distribution board, a frequency converter cabinet, various transformers, a distribution box and a junction box; the first generator set and the second generator set supply power to the main distribution board, and two independent distribution circuits are arranged inside the main distribution board; wherein, the load of the distribution branch I in the two independent distribution circuits includes the first frequency converter cabinet and the first winch at the rear end thereof, the first PLC control cabinet, the first transformer, the third transformer and the AC UPS equipment at the rear end thereof; the rear end of the first transformer is connected to the first AC distribution box, and the first AC distribution box is arranged on the erection stand; the rear end of the AC UPS equipment is connected to the third AC distribution box, and the third AC distribution box is arranged inside the erection control cabin; the load of the distribution branch II includes the second frequency converter cabinet and the second winch at the rear end thereof, the second PLC control cabinet, the second transformer and the lighting transformer; the rear end of the second transformer is connected to the second AC distribution box, and the second AC distribution box is arranged on the erection stand; the rear end of the lighting transformer is connected to various lighting loads on the stand;

[0008] The two power distribution circuits in the erection stand are completely independent; the first AC distribution box is powered by the standby generator set and the first transformer on the fixed stand, and the input circuits of the two realize hardware interlocking through circuit design; the main power loads of the first AC distribution box include the first temperature control cabin air conditioner, the first guide section air conditioner, the first DC regulated power supply combination, the cover opening motor and the environmental testing equipment, and the main power loads of the second AC distribution box in the standby power supply circuit include the second temperature control cabin air conditioner, the second guide section air conditioner, the second DC regulated power supply combination and three standby circuits;

[0009] The third AC distribution box inside the erection control cabin is used as the distribution terminal, which supplies power to the AC junction box, the front control cabin and the command and control cabin respectively. The load of the AC junction box includes: a third DC regulated power supply combination, a fourth DC regulated power supply combination, environmental testing equipment, lighting and air conditioning. The back-end circuit design of the third DC regulated power supply combination and the fourth DC regulated power supply combination is the same as that of the two DC regulated power supply combinations on the erection rig, but the loads are different.

[0010] Optionally, the first AC distribution box and the second AC distribution box have completely identical functional performance and external interfaces and can be used interchangeably; the function of the first DC regulated power supply combination and the second DC regulated power supply combination is to provide low-voltage DC power supply for control of the erection gantry, and the first DC distribution box and the second DC distribution box are powered by a DC regulated power supply combination and a low-voltage battery pack in parallel. In the event of failure of the DC regulated power supply combination, the battery pack can provide uninterrupted power supply for up to 1 hour to ensure the reliability of the low-voltage power supply; the load of the first DC distribution box includes the first temperature control system, the first aiming system inertial group, the first vehicle adjustment system main controller, the first vehicle adjustment system encoder and the pendulum north finder; the load of the second DC distribution box includes the second temperature control system, the second aiming system inertial group, the second vehicle adjustment system backup controller, the aiming glass and one backup circuit; similarly, the two DC distribution boxes have completely identical functional performance and external interfaces and can be used interchangeably.

[0011] Optionally, the first AC distribution box, the second AC distribution box, the first DC regulated power supply combination, the second DC regulated power supply combination, the third DC regulated power supply combination, and the fourth DC regulated power supply combination all have dedicated communication modules to report status information to the control system.

[0012] Optionally, the power distribution branch I and the power distribution branch II respectively adopt an AC busbar hot redundancy design, that is, the power supply and distribution system includes two sets of AC busbars, which respectively supply power to the first winch and the second winch.

[0013] Optionally, two AC input interfaces are set at the front end of the first AC distribution box and the front end of the second AC distribution box, one of which is connected to the AC power supply of the fixed stand or the mains, and the other is connected to the standby generator set, wherein the generator set interface of the second AC distribution box is the standby interface; when the erection stand performs process operations independently, the erection stand is connected to the mains to realize the long-term independent insulation function of the temperature control system; when the erection stand needs to be transported, the standby generator set is started to continuously provide power to the temperature control system and environmental testing equipment during the movement of the erection stand.

[0014] Optionally, the first AC distribution box, the second AC distribution box, the first DC regulated power supply combination, the second DC regulated power supply combination, the third DC regulated power supply combination, and the fourth DC regulated power supply combination have a status information reporting function and can report their respective status information and fault information to the control system in real time, and the control system performs data interpretation and recording.

[0015] Optionally, each load is independently powered by an isolation transformer, and the secondary neutral line of the isolation transformer is completely isolated from the protective ground.

[0016] Optionally, multiple backup interfaces are used, and backup power supply interfaces are provided for the cover opening motor and environmental testing equipment on the erection stand. Under normal working conditions, the above loads use the power supply of the first AC distribution box. When the bus where the first AC distribution box is located fails, since the second AC distribution box uses the same interface as the first AC distribution box, the power supply interface of the cover opening motor and environmental testing equipment can be manually connected to the second AC distribution box to ensure power supply continuity.

[0017] Optionally, each low-voltage power supply is backed up by a low-voltage lead-acid battery pack. When a DC regulated power supply combination fails, the low-voltage lead-acid battery pack provides hot redundant power supply.

[0018] Optionally, use components with better environmental adaptability, protect the components by combining silicone rubber coating and spraying technology, and use stainless steel waterproof connectors; and / or

[0019] The box body in the system adopts a sealed structure, in which the top cover and panel cover are sealed with sealing strips, the top cover and panel are fixed with screws around them, the shell is sealed with a silicone rubber sealing ring, and right angles or sharp corners are avoided during the structural design process; and / or

[0020] The base material of the box body and the mounting plate shall be made of steel or rust-proof aluminum, and the surface shall be treated with nano-coating. Standard parts with thread grade M4 or above shall be made of carbon steel, and the surface shall be treated with hot-dip galvanizing or Dacromet treatment; and / or

[0021] The structural parts are painted inside and outside, the standard parts are sealed with silicone rubber after being fixed, the bending positions inside the box are coated with silicone rubber, and the external mounting screws are coated with silicone rubber and painted before the product leaves the factory.

[0022] It can be seen from the technical solutions provided by one or more embodiments of the present specification that a dual redundant hot backup power supply architecture is adopted, and the process adopts a mode of multi-unit grid-connected power generation or dual units supplying power separately. The power distribution adopts a dual-path completely isolated power distribution method. When a single set of products fails, the other set of products can complete the action process without reducing the indicators. A single unit or AC power supply is used under non-task conditions, which can not only reduce the consumption of the system but also achieve the effect of reducing the cumulative operating time of a single device, further improve the reliability of the product, and reduce the operation and maintenance costs during the use of the product, meeting the use requirements of reliable power supply under unsecured conditions; from the material selection in the early stage of design to the process in the product production process, The process of processing and maintenance during use have improved the environmental adaptability of single-machine products. In the high temperature, high humidity and high salt fog environment at sea, the system can meet the use requirements of long-term operation and long-term storage, ensuring the normal functions and performance of the product during operation while greatly reducing the maintenance workload and cost. According to the use requirements, the system is embedded with an independent power supply and distribution electronic system, in which the stand end supplies power to winches, inverters and other equipment that are not convenient to move, and the erection frame end can adapt to various transportation conditions according to the use requirements, and can ensure the continuous power supply capacity during transportation or long-term insulation, which fully meets the use requirements and improves the mobility and flexibility of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the description of one or more embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a schematic diagram of the structure of the fixed frame part of the power supply and distribution system of the offshore launch platform in the embodiment of this specification.

[0025] Figure 2 It is a structural schematic diagram of the erection stand part of the power supply and distribution system of the offshore launch platform in the embodiment of this specification.

[0026] Figure 3 It is a structural diagram of the erection control cabin part of the offshore launch platform power supply and distribution system in the embodiment of this specification.

[0027] Figure 4It is a schematic diagram of the communication network topology structure of the power supply and distribution system of the offshore launch platform in the embodiments of this specification. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the one or more embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0029] The purpose of the present invention is to design a high-reliability power supply and distribution system suitable for offshore launch platforms, and to provide a power supply and distribution technical solution with dual redundant hot backup to solve the problem that when a single point fails in the offshore launch power supply and distribution system, the traditional power supply and distribution system cannot ensure the normal operation of the launch process.

[0030] Reference Figure 1-3 As shown, they are respectively the fixed gantry part, the erection gantry part and the erection control cabin part of the offshore launch platform power supply and distribution system provided in the embodiments of this specification.

[0031] Figure 1 It is the fixed frame part of the power supply and distribution system of the offshore launch platform, which consists of generator sets, main switchboards, inverter cabinets, various transformers, distribution boxes, junction boxes and other equipment.

[0032] The fixed frame part of the power supply and distribution system of the offshore launch platform is supplied with AC power by generator set 101 and generator set 102 to the main switchboard 104, and two independent distribution circuits are arranged inside the main switchboard 104: distribution branch I and distribution branch II.

[0033] Among them, the load of distribution branch I includes 1# inverter cabinet 105 and 1# winch 106 at the rear end thereof, 1# PLC control cabinet 107, 1# transformer 108, 3# transformer 110 and 380V AC UPS (uninterruptible power supply) equipment 111 at the rear end thereof. The rear end of 1# transformer 108 is connected to 1# AC distribution box 109, which is arranged on the erection platform; the rear end of 380V AC UPS is connected to 3# AC distribution box 112, which is arranged inside the erection control cabin.

[0034] Secondly, the loads of distribution branch II include 2# inverter cabinet 116 and its rear end 2# winch 117, 2# PLC control cabinet 118, 2# transformer 119 and lighting transformer 121. The rear end of 2# transformer 119 is connected to 2# AC distribution box 120, and 2# AC distribution box 120 is set on the erection platform; the rear end of lighting transformer 121 is connected to various lighting loads on the platform.

[0035] Figure 2 The erection platform part of the power supply and distribution system for the offshore launch platform has two power distribution circuits that are completely independent. The backup generator set 122 and the 1# transformer 108 on the fixed platform jointly supply power to the 1# AC distribution box 109, and the input circuits of the two realize hardware interlocking through circuit design; the main power loads of the 1# AC distribution box 109 include the 1# temperature control cabin air conditioner 202, the 1# guide section air conditioner 203, the 1# DC regulated power supply combination 204, the cover opening motor 221 and the environmental testing equipment 222, and a backup power supply circuit is also set; the main power loads of the 2# AC distribution box 120 include the 2# temperature control cabin air conditioner 224, the 2# guide section air conditioner 225, the 2# DC regulated power supply combination 226 and three backup circuits.

[0036] The functions, performance and external interfaces of 1# AC distribution box 109 and 2# AC distribution box 120 are completely consistent and can be used interchangeably; the functions of 1# DC stabilized power supply combination 204 and 2# DC stabilized power supply combination 226 are to provide low-voltage DC power supply for control of the erection platform, and the DC stabilized power supply combination and low-voltage battery group (1# battery group 205 and 2# battery group 227) are connected in parallel to supply power to 1# DC distribution box 206 and 2# DC distribution box 228. In the event of failure of the DC stabilized power supply combination, The battery pack can provide uninterrupted power supply for up to 1 hour, ensuring the reliability of low-voltage power supply; the load of 1# DC distribution box 206 includes temperature control system 207, aiming system inertial group 208, vehicle adjustment system main controller, vehicle adjustment system encoder and pendulum north finder; the load of 2# DC distribution box 228 includes temperature control system 229, aiming system inertial group 230, vehicle adjustment system backup controller, aiming glass and one backup circuit; similarly, the functional performance and external interface of the two DC distribution boxes are exactly the same, and can be used interchangeably.

[0037] Figure 3For the erection control cabin part of the offshore launch platform power supply and distribution system, the 3# AC distribution box 112 is used as the distribution terminal inside, which supplies power to the AC junction box 113, the front control cabin 114 and the command and control cabin 115 respectively. The load of the AC junction box 113 includes the 3# DC regulated power supply combination 301, the 4# DC regulated power supply combination 312, the environmental testing equipment 309, the lighting 310 and the air conditioner 311, etc. The back-end circuit design of the 3# DC regulated power supply combination 301 and the 4# DC regulated power supply combination 312 is the same as that of the two DC regulated power supply combinations on the erection rig, but the loads are different.

[0038] Figure 4 This is the communication network topology of the power supply and distribution system of the offshore launch platform, in which 1# AC distribution box 109, 2# AC distribution box 120, 1# DC regulated power supply combination 204, 2# DC regulated power supply combination 226, 3# DC regulated power supply combination 301, and 4# DC regulated power supply combination 312 all have dedicated communication modules to report status information to the control system.

[0039] It should be understood that in this manual, an AC busbar hot redundancy design is adopted, that is, the power supply and distribution system contains two sets of AC busbars, which supply power to winch 1# and winch 2# respectively. The general power supply and distribution system adopts a single busbar design. Although the two winches have the function of backing up each other, when a short circuit or busbar circuit breaker tripping occurs, the entire system will be powered off. In the system, when one of the two winches fails (including a short circuit), since the two busbars are completely independent, the system can execute the process action through the winch that has not failed, greatly improving the reliability of the product without the need for on-site personnel support.

[0040] Moreover, it is compatible with multiple power supply modes. Since the main distribution board in the fixed gantry part is designed with two independent distribution branches, more than two generator sets can be connected to the front end of the main distribution board. It is compatible with three power supply modes: grid-connected power generation of multiple generator sets, separate power supply of dual generator sets and single-circuit power supply on shore. In one of the first two modes of the launch platform, in the event of a single generator set failure, the remaining generator sets will continue to ensure the normal progress of the mission.

[0041] Furthermore, the system is embedded with an independent power supply and distribution electronic system, which is arranged on the erection stand. Since the erection stand needs to be kept warm before being connected to the fixed stand, two AC input interfaces are set at the front ends of the 1# AC distribution box and the 2# AC distribution box, one of which is connected to the AC power supply or AC power of the fixed stand, and the other is connected to the standby generator set, wherein the generator set interface of the 2# AC distribution box is a standby interface; when the erection stand performs process operations independently, the erection stand is connected to the AC power supply to realize the long-term independent insulation function of the temperature control system; when the erection stand needs to be transported, the standby generator set is started to continuously provide power to the temperature control system, environmental testing equipment, etc. during the movement of the erection stand.

[0042] In fact, the system provides dual hot redundant backup for controlling low-voltage electricity consumption. First, each load of the control system is designed with redundant backup. The power supply of the main equipment is realized by one low-voltage power supply, and the low-voltage power supply of the backup equipment is realized by another low-voltage power supply. The two low-voltage power supplies are unrelated in terms of AC input, power conversion, and power distribution. When any link fails, the other low-voltage power supply can be guaranteed not to be affected; second, each low-voltage power supply has a low-voltage lead-acid battery group for backup power supply. When the DC regulated power supply combination fails, the low-voltage lead-acid battery group will provide hot redundant power supply, and the continuous power supply time is up to 1 hour; the above dual hot redundant power supply can effectively ensure the operation safety and use reliability of the launch platform.

[0043] In the system, 1# AC distribution box, 2# AC distribution box, 1# DC regulated power supply combination, 2# DC regulated power supply combination, 3# DC regulated power supply combination, and 4# DC regulated power supply combination have the function of reporting status information, and can report their respective status information, fault information, etc. to the control system in real time, and the control system performs data interpretation and recording, thereby improving the fault isolation rate and effectively using the maintenance workload.

[0044] The system provides AC UPS power supply for the three control cabins. It can be seen from the system architecture that the rear end of the 3# transformer is mostly a single load, and there is no load self-backup function. In addition, in order to prevent the situation where a single load short circuit causes the dual busbars to trip at the same time, the system does not support the mode where two busbars supply power to the same load; therefore, a 45kW UPS is designed at the front end of the 3# AC distribution box. When the distribution branch I in the main distribution board is powered off, the UPS at the front end of the 3# AC distribution box is responsible for providing continuous power supply to the rear end load to ensure the normal operation of the process.

[0045] Except for the winch and its related equipment which are directly powered by the main switchboard, all other loads are independently powered by isolation transformers. This design has the following advantages: First, it improves the adaptability of the system. In order to achieve the adaptability of the offshore launch platform, the power supply and distribution system needs to be compatible with three-phase three-wire and three-phase four-wire AC power supply. However, the loads in the power supply and distribution system do not have the above functions. Through the use of isolation transformers, the two types of AC power supply can be converted into three-phase four-wire power supply, which can ensure the normal operation of the load on any hull without changing the load circuit design; second, the use of isolation transformers can effectively classify various loads, improve the fault detection rate, and also improve the electromagnetic compatibility of the system; third, the secondary neutral line of the isolation transformer is completely isolated from the protective ground. When a load leakage fault occurs, the load can be grounded nearby to effectively avoid electric shock accidents, effectively improving the safety of the power supply and distribution system.

[0046] A feasible solution, the system is equipped with lighting and household electricity. In addition to process-related equipment, it can provide household power supply for normal work and activities of personnel without the need to design a separate household power distribution system.

[0047] Another feasible solution is that the system is equipped with multiple backup interfaces. In addition to the loads that can be covered by the above-mentioned busbar mutual backup and UPS power supply mutual backup, a backup power supply interface is provided for the cover opening motor and environmental testing equipment on the erection stand. Under normal working conditions, the above loads use the power supply of the 1# AC distribution box. When the busbar where the 1# AC distribution box is located fails, since the 2# AC distribution box uses the same actual configuration as the 1# AC distribution box, the power supply interface of the cover opening motor and the environmental testing equipment can be manually connected to the 2# AC distribution box to ensure power supply continuity.

[0048] Furthermore, the system is designed as follows to adapt to the harsh high temperature, high humidity and high salt fog environment at sea: first, components with better environmental adaptability are selected, and the components are protected by the process of coating with silicone rubber and spraying 823, and 316L stainless steel waterproof connectors are selected; second, the system box adopts a sealed structure, in which the top cover and panel cover are sealed with sealing strips, the top cover and panel are tightened and fixed with screws around, and the shell is sealed with a silicone rubber sealing ring (with a focus on UV protection and salt fog and mildew protection), and the structural design process avoids No right-angle bends or sharp corners; thirdly, the base material of the box body and the mounting plate are made of 316L steel or 5A16 rust-proof aluminum. Standard parts with thread grade M4 (inclusive) or below are made of 316L and surface treated with nano-coating. Standard parts with thread grade M4 or above are made of carbon steel and the surface is hot-dip galvanized or Dacromet treated; fourthly, the inside and outside of the structural parts are painted, the standard parts are sealed with silicone rubber after being fixed, the bending position inside the box is coated with silicone rubber, and the external mounting screws are coated with silicone rubber and painted before the product leaves the factory.

[0049] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0050] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0051] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Claims

1. A power supply and distribution system for an offshore launch platform, comprising: Fixed gantry, erection gantry and erection control cabin; among which, The fixed stand at least includes: a first generator set, a second generator set, a main distribution board, a frequency converter cabinet, various transformers, a distribution box and a junction box; the first generator set and the second generator set supply power to the main distribution board, and two independent distribution circuits are arranged inside the main distribution board; wherein, the load of the distribution branch I in the two independent distribution circuits includes the first frequency converter cabinet and the first winch at the rear end thereof, the first PLC control cabinet, the first transformer, the third transformer and the AC UPS equipment at the rear end thereof; the rear end of the first transformer is connected to the first AC distribution box, and the first AC distribution box is arranged on the erection stand; the rear end of the AC UPS equipment is connected to the third AC distribution box, and the third AC distribution box is arranged inside the erection control cabin; the load of the distribution branch II includes the second frequency converter cabinet and the second winch at the rear end thereof, the second PLC control cabinet, the second transformer and the lighting transformer; the rear end of the second transformer is connected to the second AC distribution box, and the second AC distribution box is arranged on the erection stand; the rear end of the lighting transformer is connected to various lighting loads on the stand; The two power distribution circuits in the erection stand are completely independent; the first AC distribution box is powered by the standby generator set and the first transformer on the fixed stand, and the input circuits of the two realize hardware interlocking through circuit design; the main power loads of the first AC distribution box include the first temperature control cabin air conditioner, the first guide section air conditioner, the first DC regulated power supply combination, the cover opening motor and the environmental testing equipment, and the main power loads of the second AC distribution box in the standby power supply circuit include the second temperature control cabin air conditioner, the second guide section air conditioner, the second DC regulated power supply combination and three standby circuits; The third AC distribution box inside the erection control cabin is used as the distribution terminal, which supplies power to the AC junction box, the front control cabin and the command and control cabin respectively. The load of the AC junction box includes: a third DC regulated power supply combination, a fourth DC regulated power supply combination, environmental testing equipment, lighting and air conditioning. The back-end circuit design of the third DC regulated power supply combination and the fourth DC regulated power supply combination is the same as that of the two DC regulated power supply combinations on the erection rig, but the loads are different.

2. The power supply and distribution system of the offshore launch platform as described in claim 1, wherein the functional performance and external interface of the first AC distribution box and the second AC distribution box are completely consistent and can be used interchangeably; the function of the first DC regulated power supply combination and the second DC regulated power supply combination is to provide low-voltage DC power supply for control of the erection gantry, and the first DC distribution box and the second DC distribution box are powered by the DC regulated power supply combination and the low-voltage battery pack in parallel. In the event of failure of the DC regulated power supply combination, the battery pack can provide uninterrupted power supply for up to 1 hour to ensure the reliability of the low-voltage power supply; the load of the first DC distribution box includes the first temperature control system, the first aiming system inertial group, the first vehicle adjustment system main controller, the first vehicle adjustment system encoder and the pendulum north finder; the load of the second DC distribution box includes the second temperature control system, the second aiming system inertial group, the second vehicle adjustment system backup controller, the aiming glass and one backup circuit; similarly, the functional performance and external interface of the two DC distribution boxes are completely consistent and can be used interchangeably.

3. The power supply and distribution system for the offshore launch platform according to claim 1, wherein: The first AC distribution box, the second AC distribution box, the first DC regulated power supply combination, the second DC regulated power supply combination, the third DC regulated power supply combination, and the fourth DC regulated power supply combination all have dedicated communication modules to report status information to the control system.

4. The power supply and distribution system of the offshore launch platform as described in any one of claims 1 to 3, wherein the power distribution branch I and the power distribution branch II respectively adopt an AC busbar hot redundancy design, that is, the power supply and distribution system contains two sets of AC busbars, which respectively supply power to the first winch and the second winch.

5. The power supply and distribution system of the offshore launch platform as claimed in claim 4, wherein two AC input interfaces are provided at the front end of the first AC distribution box and the front end of the second AC distribution box, one of which is connected to the fixed platform AC power supply or the mains, and the other is connected to the standby generator set, wherein: The generator set interface of the second AC distribution box is a backup interface; when the erection stand performs process operations independently, the erection stand is connected to the mains to realize the long-term independent insulation function of the temperature control system; when the erection stand needs to be transported, the backup generator set is started to continuously provide power to the temperature control system and environmental testing equipment during the movement of the erection stand.

6. The power supply and distribution system for the offshore launch platform as claimed in claim 4, The first AC distribution box, the second AC distribution box, the first DC regulated power supply combination, the second DC regulated power supply combination, the third DC regulated power supply combination, and the fourth DC regulated power supply combination have the function of reporting status information, and can report their respective status information and fault information to the control system in real time, and the control system performs data interpretation and recording.

7. The power supply and distribution system for the offshore launch platform as described in claim 4, wherein each load is independently powered by an isolation transformer, and the secondary neutral line of the isolation transformer is completely isolated from the protective ground.

8. The power supply and distribution system of the offshore launch platform as described in claim 4 adopts multiple backup interfaces. The erection stand provides a backup power supply interface for the cover opening motor and the environmental testing equipment. Under normal working conditions, the cover opening motor and the environmental testing equipment use the power supply of the first AC distribution box. When the bus where the first AC distribution box is located fails, since the second AC distribution box uses the same interface as the first AC distribution box, the power supply interface of the cover opening motor and the environmental testing equipment is manually connected to the second AC distribution box to ensure power supply continuity.

9. In the power supply and distribution system of the offshore launch platform as described in claim 4, each low-voltage power supply is backed up by a low-voltage lead-acid battery group, and when the DC regulated power supply combination fails, the low-voltage lead-acid battery group is used for hot redundant power supply.

10. The power supply and distribution system for the offshore launch platform as claimed in claim 4, wherein components with better environmental adaptability are selected, components are protected by combining silicone rubber coating and spraying technology, and stainless steel waterproof connectors are selected; and / or The box body in the system adopts a sealed structure, in which the top cover and panel cover are sealed with sealing strips, the top cover and panel are fixed with screws around them, the shell is sealed with a silicone rubber sealing ring, and right angles or sharp corners are avoided during the structural design process; and / or The base material of the box body and the mounting plate shall be made of steel or rust-proof aluminum, and the surface shall be treated with nano-coating. Standard parts with thread grade M4 or above shall be made of carbon steel, and the surface shall be treated with hot-dip galvanizing or Dacromet treatment; and / or The structural parts are painted inside and outside, the standard parts are sealed with silicone rubber after being fixed, the bending positions inside the box are coated with silicone rubber, and the external mounting screws are coated with silicone rubber and painted before the product leaves the factory.

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