Novel structure of new energy boost bus bar

Abstract

A novel structure of a new energy boost bus bar comprises a transformer low-voltage wiring terminal, the transformer low-voltage wiring terminal is connected with an outgoing wire wiring terminal of a frame circuit breaker through a multilayer bus bar, and an incoming wire wiring terminal of the frame circuit breaker is connected with a multilayer bus bar. The sectional area of the upper side of the rear part of the first vertical branch bus is half of the sectional area of the multi-layer bus bar, the sectional area of the lower side of the front part of the second vertical branch bus is half of the sectional area of the multi-layer bus bar, and the first vertical branch bus is connected with first horizontal buses with the same specification; the second vertical branch bus is connected with a second horizontal bus with the same specification, and the first horizontal bus and the second horizontal bus are respectively connected with the molded case circuit breaker through branch buses; by designing the multi-layer bus bar into a bus bar structure with double-layer sections and halved sectional area, the bus bar consumption is remarkably reduced, the space utilization rate is improved, the material cost is reduced, and the system stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy power generation side busbars, and in particular to a new structure of a new energy boost busbar. Background Art

[0002] With the rapid development of renewable energy technology, photovoltaic, wind power, energy storage and other new energy power generation have become an indispensable part of the power system. On the new energy power generation side, the large-capacity boost busbar is an important component connecting each power generation unit with the power grid, and its design and selection have an important impact on the overall performance and economic benefits of the system.

[0003] At present, the large-capacity boost busbar on the renewable energy power generation side generally adopts a single-row double busbar structure. However, with the continuous increase in power generation capacity, the number of circuits is also increasing, from the usual 12 circuits to 18 circuits, or even more circuits. This trend has led to the continuous lengthening of the single-row double busbar, which not only increases the cost of busbar materials, but also requires a corresponding increase in the shell size, causing the overall cost to increase step by step.

[0004] The busbar plays a key role in the renewable energy power generation system, and its main material is copper. Copper is widely used due to its high conductivity and low loss. However, as the price of copper continues to rise, coupled with the relative scarcity of copper resources in my country, most of it needs to be imported, which greatly increases the manufacturing cost of renewable energy power generation systems. Especially in the field of large-capacity boost busbars, the cost increase is more significant due to the large amount of copper material required.

[0005] In addition, with the continuous increase in renewable energy power generation capacity, the performance requirements for boost busbars are becoming increasingly higher. Although the traditional single-row double busbar structure meets the needs of power transmission to a certain extent, it still needs to be improved in terms of material cost, space utilization, and system stability. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a new type of new energy boost busbar structure. The multi-layer busbar is designed to be a double-layer segmented busbar structure with a multi-layer busbar cross-sectional area halved, and the first vertical branch busbar with a rear upper side cross-sectional area half of the multi-layer busbar and the second vertical branch busbar with a front lower side cross-sectional area half of the multi-layer busbar are respectively connected. The overall mounting frame structure is divided into a double-layer segmented structure of the rear upper side and the front lower side, which realizes the transformation from the traditional multi-layer busbar to a more compact double-layer segmented structure with a multi-layer busbar cross-sectional area halved, significantly reducing the busbar usage, improving space utilization, reducing material costs, and improving system stability.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A new type of new energy boost busbar structure includes a transformer low-voltage terminal 1, which is connected to the outgoing terminal of a frame circuit breaker 5 through a multi-layer busbar 4, and the incoming terminal of the frame circuit breaker 5 is connected to the multi-layer busbar 6. The multi-layer busbar 6 is respectively connected to a first vertical branch busbar 7 whose upper rear cross-sectional area is half of the multi-layer busbar 6 and a second vertical branch busbar 8 whose lower front cross-sectional area is half of the multi-layer busbar 6. The first vertical branch busbar 7 is connected to a first horizontal busbar 9 of the same specification, and the second vertical branch busbar 8 is connected to a second horizontal busbar 10 of the same specification. The first horizontal busbar 9 and the second horizontal busbar 10 are respectively connected to a molded case circuit breaker 12 through a branch busbar 11.

[0009] The multi-layer busbar 4 , the multi-layer busbar 6 , the first horizontal busbar 9 and the second horizontal busbar 10 are all supported by the supporting busbar clamp 3 .

[0010] The multi-layer busbar 4 is provided with a through-type current transformer 2 .

[0011] The first horizontal busbar 9 and the second horizontal busbar 10 both adopt a single-row structure.

[0012] The molded case circuit breakers 12 are arranged in layers and sections.

[0013] The multi-layer busbar 4, the multi-layer busbar 6, the first vertical branch busbar 7, the second vertical branch busbar 8, the first horizontal busbar 9 and the second horizontal busbar 10 are made of copper or aluminum or copper-clad aluminum composite materials.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The multi-layer busbar 6 of the utility model adopts a busbar structure with double-layer segmentation and a multi-layer busbar cross-sectional area halved, which respectively connects a first vertical branch busbar 7 with a rear upper cross-sectional area half of the multi-layer busbar 6 and a second vertical branch busbar 8 with a front lower cross-sectional area half of the multi-layer busbar 6. The installation frame structure is divided into a double-layer segmented structure of the rear upper side and the front lower side, which significantly reduces the busbar usage and reduces the material cost.

[0016] 2. The first horizontal busbar 9 and the second horizontal busbar 10 of the utility model adopt a single-row structure, which is more compact in the horizontal direction, reduces the floor space of the busbar system, and makes the space utilization rate higher.

[0017] 3. The molded case circuit breaker 12 of the utility model is arranged in layers and sections, which realizes a compact arrangement in a limited space and significantly improves the space utilization rate; at the same time, a certain distance is maintained between the molded case circuit breakers 12, which does not affect the operation of the molded case switch, is also conducive to air circulation and heat dissipation, and improves the system stability.

[0018] In summary, the utility model significantly improves space utilization, reduces material costs, enhances system stability, and has broad application prospects and important practical value in power systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the installation structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of the utility model from top view

[0021] Figure 3 This is a schematic diagram of the rear view installation structure of the utility model

[0022] Among them: 1-transformer low-voltage terminal; 2-through-type current transformer; 3-support busbar clamp; 4-multi-layer busbar; 5-frame circuit breaker; 6-multi-layer busbar; 7-first vertical branch busbar; 8-second vertical branch busbar; 9-first horizontal busbar; 10-second horizontal busbar; 11-branch busbar; 12-molded case circuit breaker. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] See also Figure 1 , Figure 2 and Figure 3 A new type of new energy boost busbar structure includes a transformer low-voltage terminal 1, which is connected to the outgoing terminal of the frame circuit breaker 5 through a multi-layer busbar 4, and the incoming terminal of the frame circuit breaker 5 is connected to the multi-layer busbar 6. The multi-layer busbar 6 is respectively connected to a first vertical branch busbar 7 with a rear upper side cross-sectional area half of the multi-layer busbar 6 and a second vertical branch busbar 8 with a front lower side cross-sectional area half of the multi-layer busbar 6. The first vertical branch busbar 7 is connected to a first horizontal busbar 9 of the same specification, and the second vertical branch busbar 8 is connected to a second horizontal busbar 10 of the same specification. The first horizontal busbar 9 and the second horizontal busbar 10 are respectively connected to a molded case circuit breaker 12 through a branch busbar 11.

[0025] In this embodiment, the multi-layer busbar 6 is designed as a busbar structure with double-layer segments and a multi-layer busbar cross-sectional area of ​​halved, and the first vertical branch busbar 7 with a rear upper cross-sectional area half of the multi-layer busbar 6 and the second vertical branch busbar 8 with a front lower cross-sectional area half of the multi-layer busbar 6 are respectively connected. The overall installation frame structure is divided into a double-layer segmented structure of the rear upper side and the front lower side, thereby realizing a transition from the traditional multi-layer busbar 6 to a more compact double-layer segmented structure and a multi-layer busbar cross-sectional area of ​​halved, which significantly reduces the busbar usage, improves space utilization, and reduces material costs.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the multi-layer busbar 4, the multi-layer busbar 6, the first horizontal busbar 9 and the second horizontal busbar 10 are all supported by the supporting busbar clamp 3. The supporting busbar clamp 3 ensures the conductive connection between the busbars, so that the current can flow smoothly to avoid power system failure, and at the same time fixes the position of the busbar to ensure the stability and reliability of the system.

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, the multi-layer busbar 4 is provided with a through-type current transformer 2, which performs real-time monitoring and protection on the current to ensure the normal operation of the power system and reduce the occurrence of system failures.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the first horizontal busbar 9 and the second horizontal busbar 10 both adopt a single-row structure, which is more compact in the horizontal direction, reduces the floor space of the busbar system, and makes space utilization higher.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the molded case circuit breakers 12 are arranged in layers and sections, achieving a compact arrangement in a limited space and significantly improving space utilization; at the same time, a certain distance is maintained between the molded case circuit breakers 12, which does not affect the operation of the molded case circuit breakers, is beneficial to air circulation and heat dissipation, and improves system stability.

[0030] The multi-layer busbar 4, the multi-layer busbar 6, the first vertical branch busbar 7, the second vertical branch busbar 8, the first horizontal busbar 9 and the second horizontal busbar 10 are made of copper or aluminum or copper-clad aluminum composite materials.

[0031] The working principle of the utility model is:

[0032] After the position of the transformer low-voltage terminal 1 is determined, the multi-layer busbar 4 connected to the frame circuit breaker 5 is designed. The design of the multi-layer busbar 4 takes into account the installation position of the through-type current transformer 2; according to the principle of shortest bus distance, the connection position of the frame circuit breaker 5 is determined, and the first horizontal busbar 9 and the second horizontal busbar 10 are designed based on the principle of the shortest distance between the frame circuit breaker 5 and the multi-layer busbar 6. After the positions of the first horizontal busbar 9 and the second horizontal busbar 10 are determined, the position of the supporting busbar clamp 3 is designed to ultimately achieve the optimal busbar structure.

[0033] The current generated from the power generation module of the new energy power plant is connected to the molded case circuit breaker 12 via a cable. The current is controlled by the molded case circuit breaker 12 and collected to the first horizontal bus 9 and the second horizontal bus 10 through the branch bus 11 respectively. The first horizontal bus 9 collects the current to the multi-layer bus 6 through the first vertical branch bus 7 with a half of the multi-layer bus 6 cross-sectional area on the upper rear side and the second horizontal bus 10 through the second vertical branch bus 8 with a half of the multi-layer bus 6 cross-sectional area on the lower front side. The collection circuit is controlled by the frame circuit breaker 5, and flows into the step-up transformer through the multi-layer bus 4 with a through-type current transformer 2 through the transformer low-voltage terminal 1 for voltage transformation.

Claims

1. A new type of new energy boost busbar structure, comprising a transformer low-voltage terminal (1), the transformer low-voltage terminal (1) is connected to the outgoing terminal of the frame circuit breaker (5) through a multi-layer busbar (4), and the incoming terminal of the frame circuit breaker (5) is connected to the multi-layer busbar (6), characterized in that: The multi-layer busbar (6) is respectively connected to a first vertical branch busbar (7) whose upper rear cross-sectional area is half of the multi-layer busbar (6) and a second vertical branch busbar (8) whose lower front cross-sectional area is half of the multi-layer busbar (6); the first vertical branch busbar (7) is connected to a first horizontal busbar (9) of the same specification; the second vertical branch busbar (8) is connected to a second horizontal busbar (10) of the same specification; the first horizontal busbar (9) and the second horizontal busbar (10) are respectively connected to a molded case circuit breaker (12) via a branch busbar (11).

2. According to claim 1, a new type of new energy boost busbar structure is characterized in that: The multi-layer busbar (4), the multi-layer busbar (6), the first horizontal busbar (9) and the second horizontal busbar (10) are all supported by a supporting busbar clamp (3).

3. A new type of new energy boost busbar structure according to claim 1 or 2, characterized in that: The multi-layer busbar (4) is sleeved with a through-type current transformer (2).

4. According to claim 1, a new type of new energy boost busbar structure is characterized in that: The first horizontal busbar (9) and the second horizontal busbar (10) both adopt a single-row structure.

5. According to claim 1, a new type of new energy boost busbar structure is characterized in that: The molded case circuit breakers (12) are arranged in layers and sections.

6. A new type of new energy boost busbar structure according to claim 1 or 2, characterized in that: The multi-layer busbar (4), the multi-layer busbar (6), the first vertical branch busbar (7), the second vertical branch busbar (8), the first horizontal busbar (9) and the second horizontal busbar (10) are made of copper or aluminum or a copper-clad aluminum composite material.

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