WO2021082303A1

WO2021082303A1 - Power distribution system

Info

Publication number: WO2021082303A1
Application number: PCT/CN2020/076202
Authority: WO
Inventors: 居静; 王剑; 吴四海; 李楠
Original assignee: 北京秦淮数据有限公司
Priority date: 2019-10-28
Filing date: 2020-02-21
Publication date: 2021-05-06
Also published as: CN211088753U

Abstract

Disclosed is a power distribution system comprising a mini-busbar feeder box loop, a low-voltage power distribution cabinet loop and a cabinet loop. One end of the low-voltage power distribution cabinet loop is connected to the mini-busbar feeder box loop. The cabinet loop is connected to the other end of the mini-busbar feeder box loop. The mini-busbar feeder box loop is used to supply power to the cabinet loop. The mini-busbar feeder box loop comprises at least two feeder boxes and a leading-in copper bar interface. The at least two feeder boxes are connected to one end of the low-voltage power distribution cabinet loop after being shorted in parallel by means of the leading-in copper bar interface.

Description

A power distribution system

Technical field

The present invention relates to the technical field of power distribution equipment, and more specifically, to a power distribution system.

Background technique

In recent years, my country’s software and information technology industries have developed rapidly. With the strong support of national policies, customers in the financial, telecommunications, manufacturing, energy, transportation, government and other industries have continuously built and upgraded data centers to improve their business operations. Carrying capacity, improve the efficiency of operation and management. my country's data center IT market has maintained a continuous and rapid growth trend. With the large-scale construction of data center technology, there are more and more new technologies. Not only does the computer room need to be maintained and repaired from time to time, but the computer room needs to be expanded according to the growth of the business, and the power distribution system that carries the data center business needs is also increasing. complex.

Before 2010, the power distribution of the cabinets in the domestic data center computer room was carried out by the head cabinets. The head cabinet of the data center originates from the power distribution cabinet usually placed at the end of a row of IT cabinets, and serves as a terminal power distribution cabinet for power distribution and protection of one or several rows of IT cabinets. The front cabinet usually receives power from the front-end UPS cabinet with a main circuit breaker, and then relies on multiple miniature output circuit breakers to radially connect with the PDU of each IT cabinet, thereby forming a traditional terminal power supply and distribution system in a data center.

The main problem of the current data center power supply method is the large number of cables, not only the power loss is relatively large, the environment is not beautiful, and the later maintenance and expansion are difficult, and the product procurement cycle and the later construction cycle are relatively long, and the To the standardization requirements, the construction and installation work is relatively more.

In the past five years, with the rapid development of data center construction and higher demand, the data center intelligent small bus system has gradually been applied to the terminal power distribution of the computer room. It has plug and play, flexible installation location, and short on-site construction period. , Long service life and other characteristics.

However, with the emergence of new retail model application scenarios in the data center industry, more and more customers choose the "white floor" model, that is, the space provided by data center infrastructure builders for customers does not contain cabinets and servers. Customers can follow You need to configure your own cabinets and servers, and the capacity of each cabinet can be customized according to your own needs; this development trend is forcing data center infrastructure builders to form a standardized design at the primary power distribution end to adapt to various differences Demand at the end of the cabinet.

In view of this, it is necessary to provide a new technical solution to solve the above-mentioned problems.

Summary of the invention

An object of the present invention is to provide a new technical solution for the power distribution system.

According to one aspect of the present invention, there is provided a power distribution system, the power distribution system including:

Small busbar start-end box circuit;

Low-voltage power distribution cabinet loop, one end of the low-voltage power distribution cabinet loop is connected to one end of the small busbar start-end box loop;

A cabinet loop, where the cabinet loop is connected to the other end of the box loop at the start of the small bus;

The small busbar start-end box loop is configured to supply power to the cabinet loop; the small busbar start-end box loop includes at least two start-end boxes and an inlet copper bar interface, and the at least two start-end boxes pass the inlet copper The row interface is connected in parallel with one end of the circuit of the low-voltage power distribution cabinet after being short-connected in parallel.

Optionally, the small busbar start-end box circuit includes a main switch, and the at least two start-end boxes are connected to one end of the main switch after being short-circuited in parallel through the copper bar interface of the incoming line, and the other end of the main switch is connected to the main switch. Connect one end of the loop of the low-voltage power distribution cabinet.

Optionally, the small busbar start box loop includes a sub switch, each of the at least two start end boxes is connected to one end of a sub switch, and the other end of the sub switch is connected to the cabinet loop connection.

Optionally, the power distribution system further includes a medium voltage power supply circuit connected to the other end of the low-voltage power distribution cabinet circuit; the medium voltage power supply circuit is configured to provide power to the power distribution system The original power supply is provided, and the medium-voltage power supply circuit sequentially supplies power to the cabinet circuit through the low-voltage power distribution cabinet circuit and the small bus start-end box circuit.

Optionally, the number of the cabinet loops corresponds to the number of the start-end boxes; each of the start-end boxes is connected to one of the cabinet loops.

Optionally, the small busbar start-end box loop includes a sub-switch, each of the at least two start-end boxes is connected to one end of a sub-switch, and the number of the cabinet loops is the same as the number of the start-end boxes. Correspondingly, the other end of each sub-switch connected to the start-end box is correspondingly connected to a circuit of the cabinet.

Optionally, the main switch is a miniature circuit breaker switch.

Optionally, the sub switch is a miniature circuit breaker switch.

Optionally, the model of the main switch is 3VA2340-5HN42-0AA0.

Optionally, the model of the sub switch is 3VA2340-5HN42-0AA0 and/or 3VA2510-5HN420AA0.

In the power distribution system of the present invention, at least two start-end boxes are short-connected in parallel through the incoming copper bar interface in the start-end box circuit of the small bus, and then connected to the low-voltage power distribution cabinet circuit, which can connect the incoming lines of the start-end boxes of different specifications. The standardization of terminals is not restricted by the load of the cabinet loop, and thus the standardization of the entire distribution cabinet group from the transformer to the low-voltage distribution cabinet output is realized.

Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.

Description of the drawings

The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention, and together with the description are used to explain the principle of the present invention.

Fig. 1 is a schematic diagram of the structure of a power distribution system of the present invention.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.

The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

The embodiment of the present invention provides a power distribution system. As shown in FIG. 1, the power distribution system includes a small busbar start-end box circuit 1, a low-voltage power distribution cabinet circuit 2 and a cabinet circuit 3; One end is connected to one end of the small busbar starting box circuit 1; the cabinet circuit 3 is connected to the other end of the small busbar starting box circuit 1; the small busbar starting box circuit 1 is configured to supply power to the cabinet circuit 3; The small busbar start-end box circuit 1 includes at least two start-end boxes 11 and an incoming copper bar interface 12. The at least two start-end boxes 11 are short-circuited in parallel with the low-voltage power distribution cabinet through the incoming copper bar interface 12 2 is connected at one end.

In the prior art, the small busbar system generally consists of three parts: a start-end box, a small busbar bridge, and an end box. The specifications of the small busbar system are determined by the total capacity of the cabinets provided. The conventional configurations on the market are 250A, 400A, and 600A. According to the total load of each section of the cabinet, different small busbar systems and the feeder circuit of the first-level power distribution side are matched. The granularity of this configuration method is limited by the total load of each section of the cabinet. In the power distribution system provided by the embodiment of the present invention, by short-circuiting at least two start-end boxes 11 in the small bus-bar start-end box circuit 1 through the incoming copper bar interface 12 and then connect them to the low-voltage power distribution cabinet circuit 2. Standardize the incoming terminals of the start-end boxes of different specifications without being restricted by the load of the cabinet loop 3, thereby realizing the standardization of the entire distribution cabinet group from the transformer to the output of the low-voltage distribution cabinet.

In one embodiment, the small busbar start-end box circuit 1 includes a main switch 13, and the at least two start-end boxes 11 are connected to one end of the main switch 13 after being short-circuited in parallel through the copper bar interface 12 The other end of the main switch 13 is connected to one end of the circuit 2 of the low-voltage power distribution cabinet.

In one embodiment, the small busbar start-end box circuit 1 includes a sub-switch 14. Each start-end box 11 of the at least two start-end boxes 11 is connected to one end of a sub-switch 14. The sub-switch 14 The other end of is connected to the cabinet loop 3.

As shown in Fig. 1, the inlet copper bar interface 12 serves as the inlet interface of the start-end box of the small bus bar of this section, and also serves as the transition bridge of the start-end box of the adjacent small bus bar. The current-carrying capacity of this incoming copper bar interface 12 can generally be designed to be 800A, 1000A or 1250A according to the total capacity of the lower-level load. The capacity of each starter box can be 250A, 400A or 630A. After at least two adjacent start-end boxes are short-circuited in parallel on the standard inlet copper bar interface, they are then connected to the circuit of the low-voltage power distribution cabinet. For example, if one start box switch 14 is 400A, the other start box switch 14 is 630A, and the incoming terminals in the two start boxes are designed to carry 1000A, then the main switch 13 also selects 1000A; or two start box switches 14 Both select 400A, the inlet terminals in the two start-end boxes can also be designed with a current carrying capacity of 1000A, and the main switch 13 can also choose to use 1000A. That is, the design of the capacity of the main switch 13 is not affected by the respective capacity of each sub switch 14. The design of the capacity of the main switch 13 will not change due to the change of the capacity of the sub switch 14. The design of the capacity of the main switch 13 can be standardized, so the small bus The output switch of the start-end box circuit 1 can be completely unified, and the feed-out circuit and the feed-out cabinet of the supply cabinet circuit are therefore unified, and can be produced as a standardized product.

In one embodiment, the power distribution system further includes a medium voltage power supply circuit 4, which is connected to the other end of the low voltage power distribution cabinet circuit 2; the medium voltage power supply circuit 4 is configured as It is used to provide the original power supply for the power distribution system, and the medium voltage power circuit 4 sequentially supplies power to the cabinet circuit 3 through the low-voltage power distribution cabinet circuit 2 and the small bus starting box circuit 1.

In one embodiment, the number of the cabinet loops 3 corresponds to the number of the start-end boxes 11; each of the start-end boxes 11 is connected to one of the cabinet loops 3 correspondingly. Each cabinet loop 3 can include multiple IT cabinets.

In one embodiment, the small busbar start-end box circuit 1 includes a sub-switch 14. Each start-end box 11 of the at least two start-end boxes 11 is connected to one end of a sub-switch 14. The cabinet circuit 3 The number corresponds to the number of start-end boxes 11, and the other end of each sub-switch 14 connected to the start-end box 11 is connected to one of the cabinet circuits 3 correspondingly. Each cabinet loop 3 is connected to the incoming copper bar interface 12 through a sub-switch 14.

In one embodiment, the main switch 13 is a miniature circuit breaker switch. In one embodiment, the sub switch 14 is a miniature circuit breaker switch. The miniature circuit breaker switch has advanced structure, reliable performance, strong breaking capacity, beautiful appearance and small size, and easy installation.

In one embodiment, the model of the main switch 13 is 3VA2340-5HN42-0AA0. In one embodiment, the model of the sub switch 14 is 3VA2340-5HN42-0AA0 and/or 3VA2510-5HN420AA0. According to actual needs, multiple sub-switches 14 can choose the same model or different models.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.

Claims

A power distribution system is characterized in that it comprises:

Small busbar start-end box circuit;

Low-voltage power distribution cabinet loop, one end of the low-voltage power distribution cabinet loop is connected to one end of the small busbar start-end box loop;

A cabinet loop, where the cabinet loop is connected to the other end of the box loop at the start of the small bus;

The small busbar start-end box loop is configured to supply power to the cabinet loop; the small busbar start-end box loop includes at least two start-end boxes and an inlet copper bar interface, and the at least two start-end boxes pass the inlet copper The row interface is connected in parallel with one end of the circuit of the low-voltage power distribution cabinet after being short-connected in parallel.
The power distribution system according to claim 1, wherein the small busbar start-end box loop comprises a main switch, and the at least two start-end boxes are connected to one end of the main switch after being short-connected in parallel through an inlet copper bar interface. Connected, the other end of the main switch is connected to one end of the loop of the low-voltage power distribution cabinet.
The power distribution system according to claim 1, wherein the small busbar start-end box loop includes a sub-switch, and each of the at least two start-end boxes is connected to one end of a sub-switch, so The other end of the sub switch is connected to the cabinet loop.
The power distribution system according to claim 1, wherein the power distribution system further comprises a medium voltage power supply circuit, and the medium voltage power supply circuit is connected to the other end of the low voltage power distribution cabinet circuit; the medium voltage power supply circuit is connected to the other end of the low voltage power distribution cabinet circuit; The power circuit is configured to provide original power supply for the power distribution system, and the medium voltage power circuit sequentially supplies power to the cabinet circuit through the low-voltage power distribution cabinet circuit and the small bus starting box circuit.
The power distribution system according to claim 1, wherein the number of the cabinet loops corresponds to the number of the start-end boxes; each of the start-end boxes is connected to one of the cabinet loops.
The power distribution system according to claim 1, wherein the small busbar start-end box loop includes a sub-switch, and each of the at least two start-end boxes is connected to one end of a sub-switch, so The number of the cabinet loops corresponds to the number of the start-end boxes, and the other end of each sub-switch connected to the start-end box is connected to one of the cabinet loops.
The power distribution system according to claim 2, wherein the main switch is a miniature circuit breaker switch.
The power distribution system according to claim 3, wherein the sub switch is a miniature circuit breaker switch.
The power distribution system according to claim 2, wherein the model of the main switch is 3VA2340-5HN42-0AA0.
The power distribution system according to claim 3, wherein the model of the sub switch is 3VA2340-5HN42-0AA0 and/or 3VA2510-5HN420AA0.