Distributed photovoltaic power generation box transformer substation

Abstract

The utility model belongs to the field of photovoltaic power generation, and particularly relates to a distributed photovoltaic power generation box transformer substation, which comprises a photovoltaic power generation box transformer substation body. According to the utility model, the photovoltaic power generation box transformer body, the detachable sealing plate, the transformer outgoing line cabinet, the energy storage outgoing line cabinet, the high-voltage incoming line cabinet, the PT cabinet, the metering cabinet, the high-voltage grid-connected cabinet, the air conditioner external unit, the air conditioner internal unit, the lower manhole, the comprehensive terminal management screen, the control transformer UPS + battery and the low-voltage cabinet are used in cooperation. A boosting box transformer and a switching station used in a traditional distributed photovoltaic project are replaced, equivalently, one piece of equipment is used for replacing two pieces of original equipment, on-site civil engineering is reduced, and the problems that generally, the secondary equipment is installed in a secondary equipment cabin, the boosting box transformer and the secondary cabin are independently placed, the occupied area of two box bodies is large, the number of middle connecting lines is large, and the cost is low are solved. And the on-site construction and debugging workload is large, and project grid connection is not facilitated.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation, specifically a distributed photovoltaic power generation transformer. Background Technology

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect at the semiconductor interface to directly convert light energy into electrical energy. Solar cells are connected in series and then encapsulated for protection to form large-area solar cell modules. Combined with components such as power controllers, a photovoltaic power generation device is formed. In photovoltaic power generation operations, photovoltaic power generation transformer boxes are used.

[0003] Traditional distributed photovoltaic (PV) projects require two main components for grid connection: a step-up transformer and a secondary equipment compartment. The step-up transformer steps up the voltage of the PV inverter to 10kV for grid connection. The secondary equipment consists of protection, communication, and dispatching devices installed according to the grid's requirements for project grid connection. These secondary devices are typically installed in the secondary equipment compartment. The step-up transformer and the secondary compartment are placed separately, resulting in a large footprint for both units, numerous connecting lines, and a significant workload for on-site construction and commissioning, which hinders the project's grid connection. Utility Model Content

[0004] To address the shortcomings of existing technologies, traditional distributed photovoltaic (PV) projects require a step-up transformer and a secondary equipment compartment for grid connection. The step-up transformer boosts the voltage of the power generated by the PV inverter to kV for grid connection. The secondary equipment consists of protection, communication, and dispatching devices installed according to the grid's requirements for project grid connection. Generally, these secondary devices are installed in the secondary equipment compartment. The step-up transformer and the secondary compartment are placed separately, resulting in a large footprint for both units, numerous connecting lines, and a significant workload for on-site construction and commissioning, which hinders the acceleration of project grid connection. This utility model proposes a distributed PV power generation transformer.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a distributed photovoltaic power generation transformer box, including a photovoltaic power generation transformer box body, a transformer outgoing cabinet fixedly connected to the inner cavity of the photovoltaic power generation transformer box body, an energy storage outgoing cabinet, a high-voltage incoming cabinet, a PT cabinet, a metering cabinet and a high-voltage grid-connected cabinet fixedly connected to one side of the transformer outgoing cabinet, a control transformer UPS + battery fixedly connected to the inner cavity of the photovoltaic power generation transformer box body, an integrated terminal management screen fixedly connected to the inner cavity of the photovoltaic power generation transformer box body, and a control transformer UPS + battery and a low-voltage cabinet fixedly connected to one side of the integrated terminal management screen.

[0006] Preferably, the top of the photovoltaic power generation transformer body is provided with a manhole, the size of which is 700*700mm.

[0007] Preferably, an outdoor air conditioner unit is fixedly connected to the surface of the photovoltaic power generation transformer body, and an indoor air conditioner unit is fixedly connected to the inner cavity of the photovoltaic power generation transformer body. The outdoor air conditioner unit and the indoor air conditioner unit are used together.

[0008] Preferably, the inner cavity of the photovoltaic power generation transformer body is movably connected with a removable sealing plate.

[0009] The advantages of this utility model are:

[0010] This utility model utilizes a photovoltaic power generation transformer substation body, a removable panel, a transformer outgoing cabinet, an energy storage outgoing cabinet, a high-voltage incoming cabinet, a PT cabinet, a metering cabinet, a high-voltage grid-connected cabinet, an outdoor air conditioning unit, an indoor air conditioning unit, a manhole, a comprehensive terminal management panel, a control transformer UPS + battery, and a low-voltage cabinet in conjunction with each other. Compared to ordinary equipment, this highly integrated transformer substation equipment replaces the traditional step-up transformer substation and switch station used in distributed photovoltaic projects, integrating the switch station and transformer substation. Essentially, one device replaces two, reducing on-site costs. The civil engineering also facilitates on-site construction, avoiding the equipment used in traditional distributed photovoltaic projects for grid connection, which consists of step-up transformers and secondary equipment compartments. The step-up transformers step up the power generated by the photovoltaic inverters to kV for grid connection. The secondary equipment is the protection, communication, and dispatching equipment installed according to the grid's requirements for project grid connection. Generally, these secondary equipment are installed in the secondary equipment compartment. The step-up transformers and secondary compartments are placed separately, which results in a large footprint for the two enclosures, numerous connecting lines, and a large workload for on-site construction and commissioning, which is not conducive to speeding up the project's grid connection. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional structural diagram of the photovoltaic power generation transformer body of this utility model;

[0014] Figure 3 This is a side view schematic diagram of the photovoltaic power generation transformer body of this utility model.

[0015] In the diagram: 1. Photovoltaic power generation transformer body; 2. Removable panel; 3. Transformer outgoing cabinet; 4. Energy storage outgoing cabinet; 5. High-voltage incoming cabinet; 6. PT cabinet; 7. Metering cabinet; 8. High-voltage grid-connected cabinet; 9. Air conditioner outdoor unit; 10. Air conditioner indoor unit; 11. Manhole; 12. Integrated terminal management panel; 13. Control transformer UPS + battery; 14. Low-voltage cabinet. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0018] This application discloses a distributed photovoltaic power generation transformer. (Refer to...) Figure 1 and Figure 3 A distributed photovoltaic (PV) power generation transformer includes a PV power generation transformer body 1. A transformer outgoing cabinet 3 is fixedly connected to the inner cavity of the PV power generation transformer body 1. An energy storage outgoing cabinet 4, a high-voltage incoming cabinet 5, a PT cabinet 6, a metering cabinet 7, and a high-voltage grid-connected cabinet 8 are fixedly connected to one side of the transformer outgoing cabinet 3. A control transformer UPS + battery 13 is fixedly connected to the inner cavity of the PV power generation transformer body 1. An integrated terminal management screen 12 is fixedly connected to the inner cavity of the PV power generation transformer body 1. A control transformer UPS + battery 13 and a low-voltage cabinet 14 are fixedly connected to one side of the integrated terminal management screen 12.

[0019] Reference Figure 2 The top of the photovoltaic power generation box transformer body 1 is provided with a manhole 11, which is 700*700mm in size. The manhole 11 allows maintenance personnel to enter the photovoltaic power generation box transformer body 1 through the manhole 11 to perform maintenance on the internal equipment.

[0020] Reference Figure 2 and Figure 3 An air conditioner outdoor unit 9 is fixedly connected to the surface of the photovoltaic power generation box transformer body 1, and an air conditioner indoor unit 10 is fixedly connected to the inner cavity of the photovoltaic power generation box transformer body 1. The air conditioner outdoor unit 9 and the air conditioner indoor unit 10 are used together. By setting the air conditioner outdoor unit 9 and the air conditioner indoor unit 10 to work together, the interior of the photovoltaic power generation box transformer body 1 is cooled to prevent the internal temperature of the photovoltaic power generation box transformer body 1 from being too high and causing damage to the internal equipment.

[0021] Reference Figure 2The inner cavity of the photovoltaic power generation transformer body 1 is movably connected to a removable sealing plate 2. By setting the removable sealing plate 2, the position of the removable sealing plate 2 can be adjusted to arrange the internal layout of the photovoltaic power generation transformer body 1, thereby improving the degree of freedom of the internal layout of the photovoltaic power generation transformer body 1.

[0022] Working principle: The photovoltaic power generation transformer body 1, removable panel 2, transformer outgoing cabinet 3, energy storage outgoing cabinet 4, high voltage incoming cabinet 5, PT cabinet 6, metering cabinet 7, high voltage grid connection cabinet 8, air conditioner outdoor unit 9, air conditioner indoor unit 10, manhole 11, integrated terminal management panel 12, control transformer UPS + battery 13, and low voltage cabinet 14 are used in conjunction to integrate these devices inside and on the surface of the photovoltaic power generation transformer body 1. This not only significantly reduces the equipment footprint, but also transfers a large amount of on-site commissioning work to the factory, which helps to reduce the amount of on-site commissioning work and speed up the construction progress.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A distributed photovoltaic power generation transformer, comprising a photovoltaic power generation transformer body (1), characterized in that: The inner cavity of the photovoltaic power generation transformer body (1) is fixedly connected to a transformer outgoing cabinet (3). On one side of the transformer outgoing cabinet (3), an energy storage outgoing cabinet (4), a high-voltage incoming cabinet (5), a PT cabinet (6), a metering cabinet (7), and a high-voltage grid-connected cabinet (8) are fixedly connected. The inner cavity of the photovoltaic power generation transformer body (1) is fixedly connected to a control transformer UPS + battery (13). The inner cavity of the photovoltaic power generation transformer body (1) is fixedly connected to an integrated terminal management screen (12). On one side of the integrated terminal management screen (12), a control transformer UPS + battery (13) and a low-voltage cabinet (14) are fixedly connected.

2. The distributed photovoltaic power generation transformer according to claim 1, characterized in that: The top of the photovoltaic power generation box transformer body (1) is provided with a manhole (11), the size of which is 700*700mm.

3. The distributed photovoltaic power generation transformer according to claim 1, characterized in that: An air conditioner outdoor unit (9) is fixedly connected to the surface of the photovoltaic power generation box transformer body (1), and an air conditioner indoor unit (10) is fixedly connected to the inner cavity of the photovoltaic power generation box transformer body (1). The air conditioner outdoor unit (9) and the air conditioner indoor unit (10) are used together.

4. A distributed photovoltaic power generation transformer according to claim 1, characterized in that: The inner cavity of the photovoltaic power generation box transformer body (1) is movably connected to a removable sealing plate (2).

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