Energy-saving three-phase three-winding prefabricated cabin special for new energy wind power generation

Abstract

The utility model discloses an energy -conserving type three -phase three -winding new energy wind power generation special prefabricated cabin. The utility model discloses an energy -conserving type three -phase three -winding new energy wind power generation special prefabricated cabin, including the casing and the 35KV high -voltage part, transformer part, 10KV medium -voltage part, 1.14KV low -voltage part of setting in the casing, it is energy -conserving, and use safety, maintenance -free, installation flexibility, environmental adaptability, environmental protection aspect has the remarkable advantage. The supporting prefabricated cabin material box casing has high reliability and durability, optimized space utilization, strong environmental adaptability, safety performance and the advantage of beautiful and environmental protection many aspects. The equipment can be applied to large -scale wind power station, is the important component of modern wind power generation system. The box transformer passes through the component such as integrated transformer, switching device, protection and control system, can realize efficient, reliable power transmission and distribution, can improve the performance and economic benefit of overall system.

Description

Technical Field

[0001] This utility model relates to the field of new energy wind power generation technology, and in particular to an energy-saving three-phase three-winding new energy wind power generation special prefabricated cabin. Background Technology

[0002] Traditional 35kV wind power transformer substations typically use double-winding transformers with low-voltage side voltages ranging from 0.69kV to 1.14kV. As the capacity of individual substation units increases, the low-voltage side current also increases, leading to a greater demand for and quantity of cables connecting the wind turbine to the substation. This also increases construction costs, subsequent maintenance expenses, and complexity. 35kV high-voltage equipment often employs vacuum circuit breakers or SF6 ring main units. The former offers stable performance but is relatively large, resulting in a larger overall enclosure size. The latter is compact, but uses SF6 gas as the insulating medium. However, the environmental impact, safety hazards, complex maintenance requirements, and high economic costs associated with SF6 have led to cautious adoption of it.

[0003] Traditional large-capacity transformers mostly use oil-immersed transformers, which are large in size. The insulating medium is insulating oil, requiring an oil conservator in the design, resulting in an overall large size and often leaving a portion of the transformer exposed outside the enclosure. Oil leaks are prone to occur during transportation, necessitating the construction of emergency oil tanks on-site. These solutions have shortcomings in terms of environmental friendliness and construction complexity. Traditional prefabricated transformer enclosures are mostly made of high-quality cold-rolled steel. While cold-rolled steel enclosures have advantages such as high mechanical strength and good processing performance, they also have disadvantages such as poor corrosion resistance, heavy weight, good thermal conductivity, limited electromagnetic shielding effect, susceptibility to damage, poor environmental friendliness, and limited fire resistance. Therefore, it is necessary to propose an energy-saving three-phase, three-winding prefabricated enclosure specifically for new energy wind power generation to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation, so as to solve the problem that the existing technology cannot simultaneously achieve environmental protection, reliability and compact structure.

[0005] This utility model provides an energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation, including a shell and a 35KV high-voltage section, a transformer section, a 10KV medium-voltage section, and a 1.14KV low-voltage section disposed within the shell. The 35KV high-voltage section includes a 35KV solid-insulated circuit breaker, a 35KV live indicator, a 35KV surge arrester, a 35KV current transformer, a 35KV cable accessory, a 35KV outgoing cable, a 35KV disconnector, and a 35KV voltage transformer. One end of the 35KV solid-insulated circuit breaker is connected to the 35KV disconnector, which is connected to the 35KV voltage transformer. The other end of the 35KV solid-insulated circuit breaker is sequentially connected to the 35KV current transformer, the 35KV cable accessory, and the 35KV outgoing cable. The 35KV live indicator and the 35KV surge arrester are respectively connected between the 35KV solid-insulated circuit breaker and the 35KV current transformer.

[0006] Furthermore, the transformer section includes a three-phase three-winding dry-type transformer and a transformer zero-sequence current transformer; the 35KV solid-insulation circuit breaker and the 35KV disconnecting switch are respectively connected to the three-phase three-winding dry-type transformer, and the three-phase three-winding dry-type transformer is connected to the transformer zero-sequence current transformer.

[0007] Furthermore, the 1.14KV low-voltage section includes a 1.14KV low-voltage frame circuit breaker, a 1.14KV surge protector, a 1.14KV voltage transformer, a 1.14KV current transformer, a 1.14KV side incoming cable, a 1.14KV knife-fuse disconnector, a 1.14KV control transformer, a maintenance socket inside the warehouse, a miniature circuit breaker for the warehouse, and a UPS device; the 35KV solid-insulation circuit breaker is connected to the 1.14KV low-voltage section. The 1.14KV low-voltage circuit breaker, 1.14KV surge protector, 1.14KV voltage transformer, and 1.14KV knife-fuse disconnector are connected in sequence; the 1.14KV low-voltage circuit breaker is connected in sequence to the 1.14KV current transformer and the 1.14KV side incoming cable; the 1.14KV knife-fuse disconnector is connected in sequence to the 1.14KV control transformer and the maintenance socket inside the warehouse, and the maintenance socket inside the warehouse is connected to the matching miniature circuit breaker and UPS device inside the warehouse.

[0008] Furthermore, the 10KV medium-voltage section includes a 10KV solid-insulated pole vacuum circuit breaker, a 10KV current transformer, a 10KV voltage transformer, a 10KV live indicator, a 10KV overvoltage protector, and a 10KV side incoming cable; one end of the 10KV solid-insulated pole vacuum circuit breaker is connected in sequence to the 10KV current transformer and the 10KV voltage transformer, and the other end of the 10KV solid-insulated pole vacuum circuit breaker is connected in sequence to the 10KV live indicator, the 10KV overvoltage protector, and the 10KV side incoming cable.

[0009] Furthermore, the shell is a prefabricated cabin structure, which adopts a steel frame structure and is equipped with industrial air conditioning, video monitoring devices, and automatic fire extinguishing devices.

[0010] Furthermore, the 35KV high-voltage section is equipped with a first 35KV solid-insulated ring main unit, a second 35KV solid-insulated ring main unit, and a third 35KV solid-insulated ring main unit; the transformer section is equipped with a 35KV side high-voltage terminal block, a 1.14KV side terminal block, and a 10KV side terminal block; the 10KV medium-voltage section is equipped with a first 10KV medium-voltage switchgear, a second 10KV medium-voltage switchgear, and a maintenance manhole; the 1.14KV low-voltage section is equipped with a first 1.14KV low-voltage switchgear, a second 1.14KV low-voltage switchgear, and a secondary control cabinet.

[0011] This utility model has the following beneficial effects: The energy-saving three-phase, three-winding prefabricated wind power generation unit of this utility model is equipped with a 35KV solid-insulated ring main unit, combining the environmentally friendly reliability of a conventional 35KV vacuum circuit breaker with the compact structure of a 35KV sulfur hexafluoride gas-filled switchgear. It is equipped with a 35KV three-phase, three-winding dry-type transformer, which has significant advantages in energy saving, safety, maintenance-free operation, installation flexibility, environmental adaptability, and environmental protection. The prefabricated enclosure shell has advantages in high reliability and durability, optimized space utilization, strong environmental adaptability, safety performance, and aesthetics and environmental friendliness. The equipment can be applied to large-scale wind farms and is an important component of modern wind power generation systems. By integrating transformers, switchgear, protection and control systems, the prefabricated unit can achieve efficient and reliable power transmission and distribution, improving the overall system performance and economic benefits. Attached Figure Description

[0012] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is the electrical schematic diagram of the energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation of this utility model; Figure 2 This is a top view of the energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation according to this utility model.

[0014] Diagram Explanation: 1-35KV High Voltage Section; 2-Transformer Section; 3-10KV Medium Voltage Section; 4-1.14KV Low Voltage Section; 5-Industrial Air Conditioner; 6-Video Monitoring Device; 7-Automatic Fire Extinguishing Device; 11-First 35KV Solid Insulated Ring Main Unit; 12-Second 35KV Solid Insulated Ring Main Unit; 13-Third 35KV Solid Insulated Ring Main Unit; 21-Transformer 35KV Side High Voltage Terminal; 22-Transformer 1.14KV Side Terminal blocks; 23 - Transformer 10KV side terminal blocks; 31 - First 10KV medium-voltage switchgear; 32 - Second 10KV medium-voltage switchgear; 33 - Maintenance manhole; 41 - First 1.14KV low-voltage switchgear; 42 - Second 1.14KV low-voltage switchgear; 43 - Secondary control cabinet; 101 - 35KV solid-insulated circuit breaker; 102 - 35KV live indicator; 103 - 35KV surge arrester; 104 - 35KV current transformer; 105 - 35 KV cable accessories; 106-35KV outgoing cables; 107-35KV disconnecting switches; 108-35KV voltage transformers; 109-three-phase three-winding dry-type transformers; 110-transformer zero-sequence transformers; 111-1.14KV low-voltage frame circuit breakers; 112-1.14KV surge protectors; 113-1.14KV voltage transformers; 114-1.14KV current transformers; 115-1.14KV side-entry cables. ; 116-1.14KV knife-type disconnect switch; 117-1.14KV control transformer; 118-In-warehouse maintenance socket; 119-In-warehouse miniature circuit breaker; 120-UPS unit; 121-10KV solid-insulated pole vacuum circuit breaker; 122-10KV current transformer; 123-10KV voltage transformer; 124-10KV live indicator; 125-10KV overvoltage protector; 126-10KV side-entry cable. Detailed Implementation

[0015] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be pointed out that the following detailed description is illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] Please see Figures 1 to 2 This utility model provides an energy-saving three-phase three-winding new energy wind power generation special prefabricated cabin, including: a shell and a 35KV high voltage section 1, a transformer section 2, a 10KV medium voltage section 3, and a 1.14KV low voltage section 4 disposed in the shell.

[0017] The 35kV high-voltage section 1 includes a 35kV solid-insulation circuit breaker 101, a 35kV live-line indicator 102, a 35kV surge arrester 103, a 35kV current transformer 104, 35kV cable accessories 105, a 35kV outgoing cable 106, a 35kV disconnector 107, and a 35kV voltage transformer 108; one end of the 35kV solid-insulation circuit breaker 101 is connected to the 35kV disconnector 107. The 35KV disconnector 107 is connected to the 35KV voltage transformer 108. The other end of the 35KV solid-insulation circuit breaker 101 is connected in sequence to the 35KV current transformer 104, the 35KV cable accessory 105, and the 35KV outgoing cable 106. The 35KV live indicator 102 and the 35KV surge arrester 103 are respectively connected between the 35KV solid-insulation circuit breaker 101 and the 35KV current transformer 104.

[0018] Specifically, the 35KV high-voltage switchgear of the prefabricated transformer substation uses a solid-insulated ring main unit, whose advantages such as high reliability, compact design and environmental protection characteristics provide an efficient and reliable solution for power transmission and distribution.

[0019] The incoming and outgoing units are equipped with 35kV solid-insulated circuit breakers 101, utilizing vacuum as the arc-extinguishing medium, possessing high-efficiency arc-extinguishing capability and long service life. The circuit breaker unit employs a maintenance-free electric operating mechanism; the mechanism itself should be maintenance-free and housed in a sealed enclosure. The operating mechanism should be monostable, a three-phase direct-acting structure, with independent mechanisms for each phase, and mechanical linkage for three-phase opening and closing. There should be an indication upon completion of energy storage, and a signal output contact. If the operating mechanism fails to fully store energy, the circuit breaker cannot be closed. The operating mechanism is driven by a drive module, which includes a drive circuit and capacitor with self-testing function. Each ring main unit should be equipped with a portable drive device with a built-in rechargeable lithium battery as backup power. In case of drive module failure or loss of system power and undervoltage of the ring main unit battery, emergency closing and opening operations can be performed via the portable drive device. The rated power of the operating mechanism should match the selected operating voltage.

[0020] The PT unit is equipped with a 35kV disconnector 107 and a 35kV voltage transformer 108. The voltage transformer is a fully insulated, epoxy-cast, integrated type with ventilation. The voltage transformer should have a rated load capacity at its specified accuracy and should meet the load requirements of all instruments, meters, and relays connected to it, as well as all instruments that may be connected to its test terminal block. The device includes a primary harmonic suppressor. It can provide voltage signals for meters and the intelligent monitoring system of the transformer substation.

[0021] The 35kV current transformer 104 is a bushing-type current transformer, which can provide current and protection signals for meters and the intelligent monitoring system of the transformer substation. The 35kV live-line indicator is configured according to the circuit and should meet the requirements for cable voltage detection, testing, and phase verification. A mechanical interlock is installed between the cable compartment door of the ring main unit and the grounding switch. The cable compartment door can only be opened when the grounding switch is in the grounded position, and the grounding switch cannot be operated while the door is open. The operating hole of the grounding switch mechanism should have a lockable latch. To ensure the safety and reliability of ring main unit operators, reliable electrical and mechanical interlocks should be provided to enable operation according to a specific procedure, achieving the "five-proof" interlocking function: preventing accidental opening and closing of circuit breakers; preventing opening and closing of isolating switches under load; preventing closing of grounding switches while energized; preventing power supply through ground; and preventing accidental entry into energized compartments. The gas box material is stainless steel. The enclosure design meets the structural requirements to prevent injury to personnel outside the enclosure caused by internal arcing due to faults.

[0022] The 109 three-phase, three-winding dry-type transformer uses a European-style, rear-mounted, gapless zinc oxide surge arrester, which can be installed before or after the cable. Installation and maintenance are simple. The molded outer shielding layer ensures the safety of installation and maintenance personnel, while its UV resistance, anti-aging properties, waterproofing, and moisture-proofing ensure reliable operation. The 35KV outgoing cable 106 is connected to the ring main unit using a 35KV European-style touchable cable head as the 35KV cable accessory 105. The European-style touchable cable head provides reliable electrical connection and insulation protection, ensuring high performance, long life and low maintenance requirements.

[0023] The transformer section 2 includes a three-phase three-winding dry-type transformer 109 and a transformer zero-sequence current transformer 110; a 35KV solid-insulation circuit breaker 101 and a 35KV disconnector 107 are respectively connected to the three-phase three-winding dry-type transformer 109, and the three-phase three-winding dry-type transformer 109 is connected to the transformer zero-sequence current transformer 110.

[0024] Specifically, a three-phase copper core three-winding, dry-type, air-cooled, non-excitation voltage regulation, low-loss, maintenance-free dry-type transformer of model SS18 was selected, which meets the first-level energy efficiency standard.

[0025] Rated voltage ratio: 35±2×2.5% / 10 / 1.14kV Connection group: Dyyn11 Capacity: Applicable to base capacity of 10000KVA and above. The transformer capacity is designed as an asymmetrical design, with the 35KV side at full capacity; the 1.14 side carries 14% of the capacity as the excitation voltage of the wind turbine; the 10KV medium voltage side carries 86% of the capacity as the output voltage of the wind turbine.

[0026] Installation location: Inside an outdoor enclosure Overload capacity: The overload capacity should meet the requirements of the "Load Guidelines for Dry-type Power Transformers".

[0027] Insulation level: The insulation level and withstand voltage test shall comply with the latest version of GB311 "Insulation Coordination of High Voltage Transmission and Transformation Equipment" and GB1094.1~5 "Power Transformers".

[0028] Transformer short-circuit withstand capability: The transformer should be able to withstand a three-phase short circuit at the low-voltage side outlet and a short-circuit current supplied by an infinite power source to the high-voltage side busbar. The windings should not be deformed, and the components should not be damaged. When the transformer is in each tap position, it should be able to withstand the dynamic and thermal stability of a sudden short circuit at the line terminals without any damage, deformation, or loosening of fasteners.

[0029] Other parameters of the transformer, such as rated short-circuit withstand current, rated peak withstand current, lightning impulse withstand voltage, and temperature rise, shall be implemented in accordance with the current national standards.

[0030] The transformer should not experience surface cracking of the coils due to temperature changes within its lifespan. The core silicon steel sheets are made of high-quality, low-loss, grain-oriented cold-rolled silicon steel, with multi-stage oblique lap joints on the core column and yoke. During assembly, the entire core is pressed tightly with uniform pressure, ensuring the transformer core will not loosen due to vibrations during transportation and operation. Each silicon steel lamination is impregnated with insulating varnish to reduce eddy current losses. The shearing burrs and stacking gaps of the core meet national standards, and the core is securely bound and well-insulated. The transformer windings use high-conductivity copper conductors; the high-voltage winding is a copper wire coil, and the low-voltage winding is a copper foil coil. Strict tightening processes are implemented for coil winding, assembly, and clamping. The leads should have sufficient support to form a robust whole with adequate short-circuit withstand capability.

[0031] The dry-type transformer cooling system can be started manually or automatically, with the starting method achieved via a selector switch. In automatic mode, the cooling system can be automatically started or stopped based on winding temperature and transformer load, with appropriate selection of return and start values ​​to avoid frequent fan operation. In the event of a fault in the cooling system during operation, it should be able to issue an accident signal and provide an upload signal interface. The cabin is equipped with an industrial-grade central air conditioning system. The transformer should be equipped with a low-voltage side zero-sequence current transformer (110). A Class I energy efficiency dry-type transformer not only reduces energy consumption and environmental pollution but also improves the power supply quality and stability of the power grid.

[0032] The 1.14kV low-voltage section 4 includes a 1.14kV low-voltage frame circuit breaker 111, a 1.14kV surge protector 112, a 1.14kV voltage transformer 113, a 1.14kV current transformer 114, a 1.14kV side incoming cable 115, a 1.14kV knife-fuse disconnector 116, a 1.14kV control transformer 117, a maintenance socket 118, a miniature circuit breaker 119, and a UPS device 120; a 35kV solid-insulation circuit breaker 101 is connected to the 1.14kV low-voltage frame circuit breaker 111. 11. Connect the 1.14KV surge protector 112, the 1.14KV voltage transformer 113, and the 1.14KV knife-fuse disconnector 116; connect the 1.14KV low-voltage frame circuit breaker 111 to the 1.14KV current transformer 114 and the 1.14KV side incoming cable 115 in sequence; connect the 1.14KV knife-fuse disconnector 116 to the 1.14KV control transformer 117 and the warehouse maintenance socket 118 in sequence, and connect the warehouse maintenance socket 118 to the warehouse matching miniature circuit breaker 119 and the UPS device 120 respectively.

[0033] Specifically, a 1.14kV low-voltage frame circuit breaker 111 is configured on the low-voltage side for line protection. This fixed circuit breaker provides instantaneous tripping and single-phase grounding protection functions, and has remote transmission contacts. It meets the requirements for high altitude and low temperature resistance. A 1.14kV current transformer 114 is configured on the low-voltage side to provide current signals for meters and intelligent monitoring systems. A 1.14kV surge protector 112 is a modular power surge protector. A 1.14kV voltage transformer 113 is configured to output voltage signals on the low-voltage side.

[0034] Self-use electrical equipment: The prefabricated substation is equipped with self-use power supply equipment; the 1.14KV control transformer 117 is set up as a three-phase, dry type with a rated voltage output of AC400V, and the terminal blocks are covered with protective covers, including lighting, anti-condensation devices, etc. The self-use transformer is equipped with a 1.14KV knife-fuse disconnect switch 116, a maintenance socket 118 in the compartment, and a miniature circuit breaker 119 in the compartment to meet the load requirements of the product.

[0035] The UPS unit 120 uses a dedicated online UPS power supply to provide AC power for the transformer substation's monitoring, control, and protection equipment. The UPS receives AC 220V input from the auxiliary power system, with a DC battery power supply for hot standby. When the AC power supply to the auxiliary power system is interrupted, it should switch to DC power without time delay to ensure uninterrupted AC output. The feeder circuit should meet the power needs of the local equipment. An intelligent monitoring system is installed inside the transformer substation to collect various electrical and non-electrical parameters to meet the monitoring and control requirements of the integrated automation system. Monitoring signals are shown in Table 1.

[0036] Table 1 Monitoring Signals The 35kV high-voltage generator inside the transformer substation is equipped with a smart meter on the 10kV medium-voltage side to monitor the power supply in real time. A sensor network, including sensors for temperature, humidity, and pressure, is also configured to collect environmental parameters and equipment operating status information. Data can be transmitted to the upper-level system via wired connections such as RS485 or Ethernet.

[0037] The 10kV medium-voltage section 3 includes a 10kV solid-insulated pole vacuum circuit breaker 121, a 10kV current transformer 122, a 10kV voltage transformer 123, a 10kV live indicator 124, a 10kV overvoltage protector 125, and a 10kV side incoming cable 126. One end of the 10kV solid-insulated pole vacuum circuit breaker 121 is connected in sequence to the 10kV current transformer 122 and the 10kV voltage transformer 123, and the other end of the 10kV solid-insulated pole vacuum circuit breaker 121 is connected in sequence to the 10kV live indicator 124, the 10kV overvoltage protector 125, and the 10kV side incoming cable 126.

[0038] Specifically, the main electrical components of the medium-voltage unit inside the prefabricated transformer substation include: circuit breakers, disconnect switches, live indicators, voltage transformers, current transformers, surge arresters, etc. An electromagnetic lock should be installed on the medium-voltage side, and the lock should be interlocked when the medium-voltage side is energized.

[0039] The 10kV solid-pole vacuum circuit breaker 121 is a solid-pole type vacuum circuit breaker, a three-in-one type, integrating the isolating switch, circuit breaker, and grounding switch into one unit. It is fixed and has spring energy storage, including manual and electric energy storage operating mechanisms. The vacuum circuit breaker and operating mechanism are integrated, and the operating mechanism can be operated electrically or manually. It should be able to be electrically operated locally / remotely, and should have a local / remote control selection switch. There is a reliable interlock between the circuit breaker and the isolating switch and grounding switch. The isolating switch and grounding switch can only be operated when the circuit breaker is in the open state, and the isolating switch and grounding switch should be linked.

[0040] The 10kV solid-insulated pole vacuum circuit breaker 121 features low operating overvoltage, meaning that no overvoltage harmful to motors or transformers is generated when the circuit breaker is operating to open or close the load. The operating circuit must meet not only electrical interlocking requirements but also operational interlocking requirements. The circuit breaker operating mechanism has a built-in anti-pumping function. The medium-voltage side is equipped with an epoxy-cast dry-type 10kV current transformer 122 and a fully insulated epoxy-cast dry-type 10kV voltage transformer 123. The medium-voltage side is also equipped with a 10kV overvoltage protector 125 and a 10kV live indicator 124.

[0041] The shell is a prefabricated cabin structure with a steel frame. The shell is equipped with an industrial air conditioner 5, a video monitoring device 6, and an automatic fire extinguishing device 7. The 35KV high-voltage section 1 includes a first 35KV solid-insulated ring main unit 11, a second 35KV solid-insulated ring main unit 12, and a third 35KV solid-insulated ring main unit 13. The transformer section 2 includes a 35KV side high-voltage terminal block 21, a 1.14KV side terminal block 22, and a 10KV side terminal block 23. The 10KV medium-voltage section 3 includes a first 10KV medium-voltage switchgear 31, a second 10KV medium-voltage switchgear 32, and a maintenance manhole 33. The 1.14KV low-voltage section 4 includes a first 1.14KV low-voltage switchgear 41, a second 1.14KV low-voltage switchgear 42, and a secondary control cabinet 43.

[0042] The enclosure utilizes a prefabricated cabin-type structure made of high-quality stainless steel, offering excellent mechanical strength and corrosion resistance. The cabin structure employs a steel frame, providing a stable foundation and ensuring overall structural stability and durability. It features excellent sealing performance, preventing moisture, dust, and other contaminants from entering the interior, protecting internal equipment from environmental influences. Enhanced manufacturing processes improve corrosion resistance and extend service life. All metal components are reliably grounded to ensure electrical safety. Equipped with surge protectors and grounding devices, it effectively prevents damage from lightning strikes. The enclosure is equipped with access control and internal operating channels for convenient personnel access and equipment operation, ensuring personnel safety and work efficiency. The enclosure houses an automatic fire extinguishing system, including fire control devices, extinguishing agent cylinders, control components, piping, and control valves. This effectively enables fire control, allowing data to be uploaded to a backend system in case of fire, enabling direct control of the fire extinguishing system for targeted fire suppression. The cabin is equipped with a video monitoring device, which can be configured with a switch to enable the uploading of monitoring data. It can perform functions such as real-time monitoring, recording and playback, intelligent analysis, remote access, and alarm linkage.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in sequences other than those illustrated or described herein.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A prefabricated cabin for energy-saving three-phase three-winding new energy wind power generation, characterized in that, include: The housing and the 35KV high voltage section (1), transformer section (2), 10KV medium voltage section (3), and 1.14KV low voltage section (4) installed inside the housing; The 35KV high-voltage section (1) includes a 35KV solid-insulation circuit breaker (101), a 35KV live indicator (102), a 35KV surge arrester (103), a 35KV current transformer (104), a 35KV cable accessory (105), a 35KV outgoing cable (106), a 35KV disconnector (107), and a 35KV voltage transformer (108); one end of the 35KV solid-insulation circuit breaker (101) is connected to the 35KV disconnector (107). The 35KV disconnector (107) is connected to the 35KV voltage transformer (108), and the other end of the 35KV solid-insulated circuit breaker (101) is connected in sequence to the 35KV current transformer (104), the 35KV cable accessory (105), and the 35KV outgoing cable (106); the 35KV live indicator (102) and the 35KV surge arrester (103) are respectively connected between the 35KV solid-insulated circuit breaker (101) and the 35KV current transformer (104).

2. The energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation as described in claim 1, characterized in that, The transformer section (2) includes a three-phase three-winding dry-type transformer (109) and a transformer zero-sequence current transformer (110); the 35KV solid-insulation circuit breaker (101) and the 35KV disconnector (107) are respectively connected to the three-phase three-winding dry-type transformer (109), and the three-phase three-winding dry-type transformer (109) is connected to the transformer zero-sequence current transformer (110).

3. The energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation as described in claim 2, characterized in that, The 1.14KV low-voltage section (4) includes a 1.14KV low-voltage frame circuit breaker (111), a 1.14KV surge protector (112), a 1.14KV voltage transformer (113), a 1.14KV current transformer (114), a 1.14KV side incoming cable (115), a 1.14KV knife-fuse disconnector (116), a 1.14KV control transformer (117), a maintenance socket (118), a miniature circuit breaker (119) for the warehouse, and a UPS device (120); the 35KV solid-insulation circuit breaker (101) is connected to the 1.14KV low-voltage frame circuit breaker. (111), 1.14KV surge protector (112), 1.14KV voltage transformer (113) and 1.14KV knife-fuse disconnector (116) are connected in sequence; 1.14KV low-voltage frame circuit breaker (111) is connected in sequence to 1.14KV current transformer (114) and 1.14KV side incoming cable (115); 1.14KV knife-fuse disconnector (116) is connected in sequence to 1.14KV control transformer (117) and warehouse maintenance socket (118), and warehouse maintenance socket (118) is connected to warehouse matching miniature circuit breaker (119) and UPS device (120) respectively.

4. The energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation as described in claim 3, characterized in that, The 10KV medium voltage section (3) includes a 10KV solid-insulated pole vacuum circuit breaker (121), a 10KV current transformer (122), a 10KV voltage transformer (123), a 10KV live indicator (124), a 10KV overvoltage protector (125), and a 10KV side incoming cable (126). One end of the 10KV solid-insulated pole vacuum circuit breaker (121) is connected in sequence to the 10KV current transformer (122) and the 10KV voltage transformer (123), and the other end of the 10KV solid-insulated pole vacuum circuit breaker (121) is connected in sequence to the 10KV live indicator (124), the 10KV overvoltage protector (125), and the 10KV side incoming cable (126).

5. The energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation as described in claim 4, characterized in that, The shell is a prefabricated cabin structure, which adopts a steel frame structure. The shell is equipped with an industrial air conditioner (5), a video monitoring device (6), and an automatic fire extinguishing device (7).

6. The energy-saving three-phase three-winding prefabricated cabin for new energy wind power generation as described in claim 5, characterized in that, The 35KV high-voltage section (1) is equipped with a first 35KV solid-insulated ring main unit (11), a second 35KV solid-insulated ring main unit (12), and a third 35KV solid-insulated ring main unit (13); the transformer section (2) is equipped with a 35KV side high-voltage terminal block (21), a 1.14KV side terminal block (22), and a 10KV side terminal block (23); the 10KV medium-voltage section (3) is equipped with a first 10KV medium-voltage cabinet (31), a second 10KV medium-voltage cabinet (32), and a maintenance manhole (33); the 1.14KV low-voltage section (4) is equipped with a first 1.14KV low-voltage cabinet (41), a second 1.14KV low-voltage cabinet (42), and a secondary control cabinet (43).

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