Modularized boosting box transformer device for wind power
The modular design and modular assembly of the step-up transformer substation solves the problems of large size, high cost, and insufficient protection level of existing devices, realizing miniaturized and low-cost step-up transformer substations that can adapt to harsh environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-04-07
AI Technical Summary
Existing wind power step-up transformers are large in size, expensive, and have insufficient protection levels, making them difficult to adapt to harsh environments.
The modular design separates the high-voltage and low-voltage compartments. The high-voltage compartment is integrated on the channel steel base, while the low-voltage compartment can be produced and transported separately. The high-voltage switch and transformer bushing with a solid-sealed structure and an electric display interface are used, eliminating the need for an electric display sensor on the circuit breaker side of the high-voltage switch. The high-voltage and low-voltage compartments are connected by a waterproof joint and threaded pipe, and the low-voltage compartment is designed with an air duct to ensure heat dissipation.
It achieves miniaturized, low-cost step-up transformer substations with IP55 high protection, adaptability to harsh environments, and reduced transportation and infrastructure costs.
Smart Images
Figure CN224097201U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power distribution equipment technology for new energy power plants, and in particular to a modular wind power step-up transformer device. Background Technology
[0002] In the fields of new energy wind power and photovoltaic power generation, as power generation efficiency and single-unit capacity increase, construction costs are continuously decreasing, while the supporting complete sets of switchgear are also constantly being innovated. The 35kV step-up transformer for wind power is also undergoing continuous improvement and upgrading in structure and technology as the single-unit capacity of wind turbines continues to increase.
[0003] Current wind power step-up transformers are relatively large in size. The long channel steel base requires larger channel steel to ensure that the deformation is within the required range (deformation not exceeding two-thousandths of the channel steel length). The foundation size at the project site is also larger, and the transportation cost is higher. Wind power plant areas have strong winds and sandstorms, and the environment is relatively harsh, requiring a high level of protection for the transformer enclosure. Currently, the protection level of transformers is mostly IP54. At present, the high-voltage and low-voltage enclosures of wind power step-up transformers on the market are mostly integrated, and the low-voltage switchgear is manufactured separately and installed in the cabinet, which is more expensive. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a modular wind power step-up transformer device that is small in size, low in cost, and has good protection effect.
[0005] This utility model discloses a modular wind power step-up transformer device, which includes a channel steel base. The channel steel base integrates a high-voltage chamber, an oil-immersed transformer, and a low-voltage chamber. The high-voltage chamber is modularly equipped with a sealed high-voltage switch. The high-voltage chamber has a second-layer door, and a live indicator is installed on the second-layer door. The transformer outlet bushing has an electrical display function. The live indicator is electrically connected to the electrical display interface of the transformer outlet bushing. The low-voltage components are integrated in the low-voltage chamber. An air outlet is provided on the upper side of the low-voltage chamber, and an air inlet is provided at the bottom of the low-voltage chamber.
[0006] This utility model discloses a modular wind power step-up transformer device, wherein a grounding copper busbar is provided on the side of the channel steel base.
[0007] This utility model discloses a modular wind power step-up transformer device, wherein a waterproof joint and a threaded pipe are connected between the high-voltage chamber and the low-voltage chamber for the passage of control circuits.
[0008] This utility model discloses a modular wind power step-up transformer device, wherein the top of both the high-voltage chamber and the low-voltage chamber are equipped with hoisting protective plates.
[0009] This utility model discloses a modular wind power step-up transformer device, wherein a high-voltage switch control box is provided in the direction of the front isolation chamber of the high-voltage chamber.
[0010] This utility model discloses a modular wind power booster transformer device, wherein a pressure relief hole is provided on one side of the high-voltage chamber.
[0011] This utility model discloses a modular wind power step-up transformer device, wherein the low-pressure chamber is mounted on a channel steel base via a low-pressure chamber channel steel base.
[0012] This utility model discloses a modular wind power step-up transformer device, wherein a maintenance room is provided on one side of the low-voltage chamber, and the air outlet is located above the maintenance room door.
[0013] This utility model discloses a modular wind power step-up transformer device, wherein a rainproof cover is provided on the outside of the air outlet, and a rainproof cover is provided inside the rainproof cover to prevent rainwater backflow.
[0014] The modular wind power step-up transformer device of this utility model differs from the prior art in that the high-voltage switch of this modular wind power step-up transformer device adopts a solid-sealed structure, integrates the isolating switch and grounding switch, and eliminates the electrical display sensor on the circuit breaker side of the high-voltage switch. The transformer outgoing bushing adopts a type with an electrical display interface, and the live display on the circuit breaker door of the second floor of the high-voltage compartment is connected to the transformer outgoing bushing. This solution saves costs, increases the air distance between the high-voltage switch pole and the current transformer, and reduces the probability of creepage.
[0015] The prefabricated substation adopts a modular design, with the high-voltage and low-voltage compartments assembled separately. The high-voltage compartment is integrated on the channel steel base, while the low-voltage compartment can be produced, transported, and assembled separately. The high-voltage switch and high-voltage switch mounting bracket are also modular, facilitating final assembly and transportation.
[0016] The high and low voltage compartments adopt a compact design. The high voltage current transformer is integrated into the high voltage switch, saving space in the high voltage compartment. The low voltage components are directly integrated into the low voltage compartment, saving space and reducing sheet metal consumption, thus reducing costs.
[0017] The prefabricated substation has IP55 high protection and can adapt to the harsh environment of wind power plants.
[0018] The following description, in conjunction with the accompanying drawings, further illustrates a modular wind power booster transformer of this utility model. Attached Figure Description
[0019] Figure 1 This is a front view of a modular wind power booster transformer according to this utility model;
[0020] Figure 2 This is a top view of a modular wind power booster transformer device of this utility model (excluding the top plate of the high-voltage chamber);
[0021] Figure 3This is a right view of a modular wind power step-up transformer device according to this utility model;
[0022] Figure 4 This is a left view of a modular wind power step-up transformer device according to this utility model;
[0023] Figure 5 This is a circuit diagram of a modular wind power step-up transformer device according to this utility model;
[0024] The markings in the diagram are as follows: 1-Lifting protective plate; 2-Channel steel base; 3-Transport fixing seat; 4-Rainproof cover; 5-High voltage chamber; 6-Lifting column; 7-Low voltage chamber; 8-Low voltage chamber channel steel base; 9-High voltage chamber second-layer door; 10-High voltage switch control box; 11-Insulator; 12-Pressure relief hole; 13-Solid-sealed high voltage switch; 14-High voltage switch fixing frame; 15-Transformer outgoing bushing; 16-Oil-immersed transformer; 17-Maintenance room; 18-Grounding copper busbar; 19-Live indicator. Detailed Implementation
[0025] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0026] Example
[0027] like Figures 1-5 As shown, the present invention provides a modular wind power step-up transformer substation, which includes a channel steel base 2. The channel steel base 2 serves as the base of the transformer substation. Several transport fixing seats 3 and hoisting columns 6 are provided on the side of the channel steel base 2, and a grounding copper busbar 18 is provided on the left side.
[0028] The high-voltage chamber 5 and oil-immersed transformer 16 are integrated on the channel steel base 2. A 35kV vacuum circuit breaker with a solidified structure is installed inside the high-voltage chamber 5, including a modularly configured solidified high-voltage switch 13 and a high-voltage switch mounting bracket 14. The solidified high-voltage switch 13 is mounted on the high-voltage switch mounting bracket 14. A high-voltage current transformer is integrated on the solidified high-voltage switch 13, saving space in the high-voltage chamber. The modular design within the high-voltage chamber facilitates assembly and transportation of the equipment.
[0029] An insulator 11 is installed on one side of the solid-sealed high-voltage switch 13, and the other side is connected to the transformer outlet bushing 15 via a cable. The transformer outlet bushing 15 is connected to the oil-immersed transformer 16. The transformer outlet bushing 15 has an electrical display function; for example, a transformer outlet bushing with an electrical display interface can be used, which eliminates the need for an electrical display sensor on the high-voltage switch circuit breaker side, saving costs. A high-voltage compartment second-layer door 9 is installed on the front side of the high-voltage compartment 5, and a high-voltage switch control box 10 is installed in the isolation chamber direction on the front side of the high-voltage compartment 5. A live indicator 19 is installed on the high-voltage compartment second-layer door 9, which is electrically connected to the electrical display interface of the transformer outlet bushing 15 for displaying data. This increases the air distance between the high-voltage switch pole and the current transformer, reducing the probability of creepage.
[0030] A pressure relief hole 12 is provided on one side of the high-pressure chamber 5.
[0031] The channel steel base 2 has a reserved installation position for the low-pressure chamber 7, which is installed on the channel steel base 2 via the low-pressure chamber channel steel base 8. The low-pressure chamber 7 can be manufactured, transported, and assembled separately.
[0032] Low-voltage components are directly integrated into the low-voltage compartment 7, eliminating the need for installation via a low-voltage frame and subsequent assembly. This saves space and reduces sheet metal consumption. The compact design also reduces the length of the channel steel base, which in turn allows for smaller channel steel specifications, saving on product material costs, transportation costs, and on-site infrastructure costs. Based on simulation and experimental testing, the 7400kV wind power transformer (transformer weighing 14 tons, total weight 17 tons) can utilize 16a# channel steel, with a channel steel base size of 5000mm × 2200mm.
[0033] A maintenance room 17 is located on one side of the low-pressure chamber 7. An air outlet is located above the door of the maintenance room, and a rain cover 4 is installed outside the air outlet. The rain cover 4 has an internal structure designed to prevent rainwater backflow. An air inlet is located at the bottom of the low-pressure chamber 7. This utility model's transformer substation has no air inlets around its perimeter. The air duct design of the low-pressure chamber ensures good heat dissipation, enabling the transformer substation to achieve an IP55 protection rating. The IP55 high protection structure can adapt to the harsh environment of wind power plants.
[0034] A waterproof joint and threaded pipe are connected between the high-pressure chamber 5 and the low-pressure chamber 7 to allow the passage of control circuitry.
[0035] Both the high-pressure chamber 5 and the low-pressure chamber 7 are equipped with lifting protective plates 1 on their tops, which, together with the lifting columns 6, facilitate the lifting and transportation of the phase change device.
[0036] This utility model relates to a 35kV vacuum circuit breaker developed to support a modular wind power step-up transformer. It features a solid-sealed structure, an integrated design of the isolating switch and grounding switch, and eliminates the electrical display sensor on the high-voltage switch circuit breaker side. The transformer outgoing bushing adopts a type with an electrical display interface, and the live display on the second-floor circuit breaker door of the high-voltage compartment is connected to the transformer outgoing bushing. This solution saves costs, increases the air distance between the high-voltage switch pole and the current transformer, and reduces the probability of creepage.
[0037] The prefabricated substation adopts a modular design, with the high-voltage and low-voltage compartments assembled separately. The high-voltage compartment is integrated on the channel steel base, while the low-voltage compartment can be produced, transported, and assembled separately. The high-voltage switch and high-voltage switch mounting bracket are also modular, facilitating final assembly and transportation.
[0038] The high and low voltage compartments adopt a compact design. The high voltage current transformer is integrated into the high voltage switch, saving space in the high voltage compartment. The low voltage components are directly integrated into the low voltage compartment, saving space and reducing sheet metal consumption, thus reducing costs.
[0039] The prefabricated substation features IP55 high protection, with no air inlets on its sides. The air inlets are located at the bottom of the low-voltage compartment, and the air outlets are above the maintenance room door, all equipped with rain covers. The rain covers are designed with a structure to prevent rainwater backflow, and the low-voltage compartment is designed with air ducts to ensure good heat dissipation. The IP55 high protection structure can adapt to the harsh environment of wind power plants.
[0040] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.
Claims
1. A modular wind power step-up transformer, characterized in that: It includes a channel steel base, on which a high-voltage chamber, an oil-immersed transformer, and a low-voltage chamber are integrated. The high-voltage chamber is modularly equipped with a solid-sealed high-voltage switch. The high-voltage chamber has a second-layer door, on which a live indicator is installed. The transformer's outgoing bushing has an electrical display function, and the live indicator is electrically connected to the electrical display interface of the transformer's outgoing bushing. The low-voltage components are integrated in the low-voltage chamber. An air outlet is provided on the upper side of the low-voltage chamber, and an air inlet is provided at the bottom of the low-voltage chamber.
2. The modular wind power step-up transformer according to claim 1, characterized in that: A grounding copper busbar is provided on the side of the channel steel base.
3. A modular wind power step-up transformer according to claim 1, characterized in that: A waterproof connector and a threaded pipe are provided between the high-pressure chamber and the low-pressure chamber to allow the control circuit to pass through.
4. A modular wind power step-up transformer according to claim 1, characterized in that: Both the high-pressure chamber and the low-pressure chamber are equipped with hoisting protective plates on their tops.
5. A modular wind power step-up transformer according to claim 1, characterized in that: A high-voltage switch control box is installed in the direction of the isolation chamber at the front of the high-voltage chamber.
6. A modular wind power step-up transformer according to claim 1, characterized in that: A pressure relief hole is provided on one side of the high-pressure chamber.
7. A modular wind power step-up transformer according to claim 1, characterized in that: The low-pressure chamber is mounted on the channel steel base via a low-pressure chamber channel steel base.
8. A modular wind power step-up transformer according to claim 1, characterized in that: A maintenance room is located on one side of the low-pressure chamber, and the air outlet is located above the maintenance room door.
9. A modular wind power step-up transformer according to claim 1 or 8, characterized in that: The air outlet is equipped with a rain cover on the outside, and the inside of the rain cover is equipped with a structure to prevent rainwater backflow.