Low-voltage cabinet of new energy photovoltaic box-type substation
By setting up the micro -shell circuit breaker in the upper and lower rows in the low -pressure cabinet of the new energy photovoltaic box -type substation, and adding the secondary circuit control wire groove, the use of low voltage space utilization rate of low -voltage structures in existing technology and large loss of failure loss It has achieved more efficient space utilization and lower failure.
Patent Information
- Application Number
- CN202420919019.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The existing low-voltage structure of the new energy photovoltaic box substation has a low space utilization rate and a large land area, which is inconsistent with the development concept of new energy. At the same time, the secondary circuit control may be burned out when the plastic shell circuit breaker fails. line, causing great losses.
The low -pressure cabinet of the new energy photovoltaic box -type substation is designed. By setting up the upper and lower rows in the power cabinet, it is set to set up a plastic shell circuit breaker and connected through the copper row to increase the secondary circuit control wire groove to protect the secondary loop. Control lines to reduce losses caused by faults.
It improved the spatial utilization rate, reduced the volume and land occupation area of the low pressure cabinet, reduced the damage of the failure to the secondary circuit control line, and conforming to the development concept of new energy.
Smart Images
Figure CN222395268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an electrical device, in particular to a new energy photovoltaic box-type transformer substation low-voltage cabinet. Background Art
[0002] Huashi photovoltaic box-type substation is an important networking equipment in the new energy power system. Compared with the traditional box-type substation, the design of the new energy Huashi photovoltaic box-type substation should not only take into account the performance of the traditional box-type substation, but also consider energy saving and reduction of land occupation, so as to better meet the idea of energy saving.
[0003] The low-voltage structure of the existing new energy Chinese-style box-type substation has a low space utilization rate and occupies a large land area, which is inconsistent with the development concept of new energy. At the same time, when the molded case circuit breaker fails and arcs, it may burn out the secondary circuit control line and cause great losses. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a new energy photovoltaic box-type substation low-voltage cabinet with high space utilization and small land occupation area.
[0005] In order to solve the above technical problems, this application provides the following technical solutions:
[0006] The utility model discloses a new energy photovoltaic box-type substation low-voltage cabinet, comprising a low-voltage switch cabinet body and a power cabinet body. The power cabinet body is provided with a plurality of outgoing molded case circuit breakers, which are divided into two rows, upper and lower. The outgoing molded case circuit breakers in the upper row are connected with the outgoing molded case circuit breakers in the lower row through a copper busbar.
[0007] Furthermore, the outgoing molded case circuit breakers in the upper row and the outgoing molded case circuit breakers in the lower row are offset from each other front to back.
[0008] Furthermore, it also includes secondary circuit control lines and secondary circuit components. A secondary circuit control line trough is provided on the outer side wall of the power cabinet body, and a plurality of secondary circuit terminals are provided in the secondary circuit control line trough. The secondary circuit control lines are provided in the secondary circuit control line trough and each of the secondary circuit control lines is respectively connected to one of the secondary circuit terminals, and the secondary circuit components are respectively connected to the secondary circuit control lines through the secondary circuit terminals.
[0009] Furthermore, the secondary circuit control wire duct is a closed shell connected to the right side panel of the power cabinet body, and an inspection door is provided on the secondary circuit control wire duct, and the inspection door can be opened and closed.
[0010] Furthermore, a frame circuit breaker and an incoming molded case circuit breaker are arranged in the low-voltage switch cabinet, and the frame circuit breaker and the incoming molded case circuit breaker are connected through a current transformer. The frame circuit breaker, the current transformer and the incoming molded case circuit breaker are arranged in sequence from top to bottom.
[0011] Compared with the prior art, the utility model of new energy photovoltaic box-type substation low-voltage cabinet has at least the following beneficial effects:
[0012] The utility model discloses a new energy photovoltaic box-type substation low-voltage cabinet. Since the outgoing molded case circuit breakers are arranged in two rows, the space inside the power cabinet is fully utilized, the space utilization rate is improved, the volume of the new energy photovoltaic box-type substation low-voltage cabinet is reduced, and the land area occupied by the substation is reduced.
[0013] The utility model of new energy photovoltaic box-type substation low-voltage cabinet is further explained below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural diagram of a new energy photovoltaic box-type substation;
[0015] Figure 2 This is a front view structural diagram of the low-voltage cabinet of the utility model new energy photovoltaic box-type substation;
[0016] Figure 3 This is a front view cross-sectional structural diagram of a low-voltage cabinet of a new energy photovoltaic box-type substation of the utility model;
[0017] Figure 4 This is a left-side structural schematic diagram of the low-voltage cabinet of the utility model new energy photovoltaic box-type substation;
[0018] Figure 5 This is a right view structural diagram of the low voltage cabinet of the utility model new energy photovoltaic box-type substation;
[0019] Figure 6 This is a right side cross-sectional structural diagram of a low-voltage cabinet of a new energy photovoltaic box-type substation of the utility model;
[0020] Figure 7 This is a schematic diagram of the structure of the secondary circuit control wire duct in the low-voltage cabinet of the new energy photovoltaic box-type substation of the utility model. DETAILED DESCRIPTION
[0021] like Figure 1 As shown, the new energy photovoltaic box-type substation includes a high voltage room 51, a low voltage cabinet 52, and a transformer 53. Figure 2 , Figure 3As shown, the utility model is a new energy photovoltaic box-type substation low-voltage cabinet 52, including a mutually independent low-voltage switch cabinet body 01 and a power cabinet body 02, and a plurality of outgoing line molded case circuit breakers 21 are arranged in the power cabinet body 02, and the outgoing line molded case circuit breakers 21 are arranged in two rows, and the outgoing line molded case circuit breakers 21 in the upper row are connected with the outgoing line molded case circuit breakers 21 in the lower row through a copper bus 22. Specifically, the low-voltage switch cabinet body 01 and the power cabinet body 02 are composed of a frame and a partition. The utility model new energy photovoltaic box-type substation low-voltage cabinet, because the outgoing line molded case circuit breakers 21 are arranged in two rows, the space in the power cabinet body 02 is fully utilized, the space utilization rate is improved, the volume of the utility model new energy photovoltaic box-type substation low-voltage cabinet is reduced, and the land area occupied by the substation is reduced.
[0022] Alternatively, if Figure 6 As shown, the upper row of outgoing molded case circuit breakers 21 and the lower row of outgoing molded case circuit breakers 21 are offset from each other front to back, which is convenient for connecting cables to the outgoing molded case circuit breakers 21 and is more convenient for maintenance. When a fault occurs in the lower row of outgoing molded case circuit breakers 21, it will not affect the upper row of outgoing molded case circuit breakers 21.
[0023] Alternatively, if Figure 3 , Figure 7 As shown, the utility model of a new energy photovoltaic box-type substation low-voltage cabinet also includes a secondary circuit control line and secondary circuit components. A secondary circuit control line trough 23 is provided on the outer wall of the power cabinet body 02. A plurality of secondary circuit terminals 24 are provided in the secondary circuit control line trough 23. The secondary circuit control line is provided in the secondary circuit control line trough 23 and each secondary circuit control line is respectively connected to a secondary circuit terminal 24. The secondary circuit components are respectively connected to a secondary circuit control line through a secondary circuit terminal 24. Specifically, the secondary circuit components include micro-breakers, fuses, terminals, indicator lights, buttons, pressure plates, intermediate relays, etc. Since the secondary circuit control line is provided in the secondary circuit control line trough 23, when an arcing fault occurs inside the power cabinet body 02, the secondary circuit control line part will not be affected, thereby reducing the loss caused by the arcing fault.
[0024] Optionally, the secondary circuit control wire duct 23 is a closed shell connected to the right side panel of the power cabinet body 02. An inspection door is provided on the secondary circuit control wire duct 23, and the inspection door can be opened and closed. During maintenance, there is no need to open the door panel of the low-voltage cabinet body. Only the inspection door needs to be opened to inspect the secondary circuit control line and the secondary circuit terminal 24, which is more convenient to operate.
[0025] Alternatively, if Figure 4 , Figure 5As shown, a frame circuit breaker 11 and an incoming molded case circuit breaker 12 are arranged in the low-voltage switch cabinet body 01. The frame circuit breaker 11 and the incoming molded case circuit breaker 12 are connected through a current transformer 13. The frame circuit breaker 11, the current transformer 13, and the incoming molded case circuit breaker 12 are arranged in sequence from top to bottom for measurement, protection, and metering. An uninterruptible power supply 14 (UPS) is also arranged outside the left side panel of the low-voltage switch cabinet body 01. A connecting copper bus 15 is also arranged in the low-voltage switch cabinet body 01. The connecting copper bus 15 is arranged on a bus frame 16. The connecting copper bus 15 is used to connect the conductive circuit. The bus frame 16 is used to support the connecting copper bus 15 to prevent the connecting copper bus 15 from being deformed during transportation and operation to prevent accidents.
[0026] Optionally, a miniature circuit breaker 25 and a longitudinal encryption device 26 are further provided in the power cabinet body 02, and the miniature circuit breaker 25 and the longitudinal encryption device 26 are provided above the outgoing molded case circuit breaker 21. The transformer 53, the frame circuit breaker 11, the outgoing molded case circuit breaker 21, and the inverter form a primary circuit, and the uninterruptible power supply 14 (UPS) draws power from the primary circuit. When the primary circuit is powered off, it provides power to the secondary circuit. The normal secondary circuit draws power from the primary circuit through the auxiliary transformer. After the secondary circuit is powered on, the primary circuit is controlled by the secondary control principle.
[0027] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.
Claims
1. A new energy photovoltaic box-type substation low-voltage cabinet, characterized in that: The invention comprises a low-voltage switch cabinet body (01) and a power supply cabinet body (02), wherein a plurality of outgoing molded case circuit breakers (21) are arranged in the power supply cabinet body (02), and the outgoing molded case circuit breakers (21) are arranged in two rows, an upper row and an lower row, and the outgoing molded case circuit breakers (21) in the upper row are connected with the outgoing molded case circuit breakers (21) in the lower row via a copper busbar (22).
2. The new energy photovoltaic box-type substation low-voltage cabinet according to claim 1 is characterized in that: The outgoing line molded case circuit breakers (21) in the upper row and the outgoing line molded case circuit breakers (21) in the lower row are offset from each other front to back.
3. The new energy photovoltaic box-type substation low-voltage cabinet according to claim 2 is characterized in that: It also includes a secondary circuit control line and secondary circuit components. A secondary circuit control line trough (23) is provided on the outer wall of the power cabinet body (02). A plurality of secondary circuit terminals (24) are provided in the secondary circuit control line trough (23). The secondary circuit control line is provided in the secondary circuit control line trough (23) and each of the secondary circuit control lines is connected to one of the secondary circuit terminals (24). The secondary circuit components are connected to the secondary circuit control line via the secondary circuit terminals (24).
4. The new energy photovoltaic box-type substation low-voltage cabinet according to claim 3 is characterized in that: The secondary circuit control wire duct (23) is a closed shell connected to the right side plate of the power cabinet body (02), and an inspection door is provided on the secondary circuit control wire duct (23), and the inspection door can be opened and closed.
5. The new energy photovoltaic box-type substation low-voltage cabinet according to claim 4 is characterized in that: A frame circuit breaker (11) and an incoming molded case circuit breaker (12) are arranged in the low-voltage switch cabinet body (01); the frame circuit breaker (11) and the incoming molded case circuit breaker (12) are connected via a current transformer (13); the frame circuit breaker (11), the current transformer (13), and the incoming molded case circuit breaker (12) are arranged in sequence from top to bottom.