CN217326830U

CN217326830U - Transformer door control system and power supply and distribution system with same

Info

Publication number: CN217326830U
Application number: CN202122277689.0U
Authority: CN
Inventors: 李莺; 李代程; 吕行
Original assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Current assignee: Beijing Baidu Netcom Science and Technology Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-08-30
Anticipated expiration: 2031-09-15

Abstract

The application discloses transformer door control system and power supply and distribution system with same relates to the field of data centers. The specific implementation scheme is as follows: the method comprises the following steps: the electromagnetic lock is mounted on a corresponding transformer cabinet door and used for opening and closing the transformer cabinet door; each electromagnetic lock is connected with a transformer outgoing line power supply; the travel switches are mounted on the corresponding transformer cabinet doors and used for detecting the opening and closing states of the transformer cabinet doors; after the normally closed contacts of each travel switch are connected in parallel, the normally closed contacts of each travel switch are connected with a tripping circuit of a superior unit connected with the high-voltage side of the transformer; and the normally open contact of each travel switch is connected in series and then is connected with a closing loop of the superior unit. Therefore, the transformer door control system and the power supply and distribution system with the same further improve the safety and reliability of the power supply and distribution system and reduce the risk of accidents.

Description

Transformer door control system and power supply and distribution system with same

Technical Field

The application relates to the field of data centers, in particular to a transformer gate control system and a power supply and distribution system with the same.

Background

Under the electromechanical architecture adopted by the current data center, redundancy is simply added once again, and the reliability in operation cannot be obviously improved. On the other hand, the data center has a great dependence on the operation level of operation and maintenance personnel, and in order to reduce the dependence of the system on the operation level, the operation reliability needs to be improved through an advanced automatic control design.

The power supply and distribution system of the data center generally comprises a transformer, and the control logic of a transformer cabinet door is very important for the reliability of the system in operation and whether better safe and reliable protection can be achieved.

Disclosure of Invention

The present application provides a transformer gating system.

The transformer door control system provided by the embodiment of the first aspect of the application comprises a plurality of electromagnetic locks, wherein the electromagnetic locks are installed on corresponding transformer cabinet doors and used for opening and closing the transformer cabinet doors; each electromagnetic lock is connected with a transformer outgoing line power supply.

According to one embodiment of the application, the transformer door control system comprises a plurality of travel switches, and the travel switches are installed on corresponding transformer cabinet doors and used for detecting the opening and closing states of the transformer cabinet doors; and after the normally closed contacts of each travel switch are connected in parallel, the normally closed contacts are connected with a tripping circuit of a superior unit connected with the high-voltage side of the transformer.

According to an embodiment of the application, the trip circuit comprises a tripping coil, wherein the tripping coil is used for triggering a tripping action of a circuit breaker of the superordinate unit.

According to one embodiment of the application, after the normally open contact of each travel switch is connected in series, the normally open contact of each travel switch is connected with a closing loop of the superior unit.

According to one embodiment of the present application, the switching-on loop includes a switching-on coil, wherein the switching-on coil is configured to trigger a switching-on action of a circuit breaker of the superior unit.

According to one embodiment of the application, the superordinate unit comprises a medium voltage cabinet or a high voltage cabinet.

According to one embodiment of the application, a temperature controller and a heat dissipation device are installed in the transformer cabinet, and the temperature controller is electrically connected with the heat dissipation device and is used for supplying power to a low-voltage cabinet connected to the low-voltage side of the transformer.

According to one embodiment of the application, a temperature controller is installed in the transformer cabinet, and when the temperature controller detects that the temperature in the transformer cabinet exceeds a threshold value, the tripping circuit trips.

According to one embodiment of the application, a physical pressure plate is arranged on the tripping circuit.

The embodiment of the second aspect of the present application provides a power supply and distribution system, including: the transformer gating system in the embodiment of the first aspect of the application.

One embodiment in the above application has the following advantages or benefits: the operation reliability of the power supply and distribution system is improved.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present application, nor do they limit the scope of the present application. Other features of the present application will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:

fig. 1 is a circuit diagram of an electromagnetic lock portion of a transformer gating system according to an embodiment of the present application.

Fig. 2 is a circuit diagram of a trip loop portion of a transformer gating system according to an embodiment of the present application.

Fig. 3 is a circuit diagram of a closing loop portion of a transformer gating system according to an embodiment of the present application.

Description of reference numerals in the drawings:

10-transformer cabinet, 11-electromagnetic lock, 12-normally closed contact, 13-normally open contact, 20-medium voltage cabinet, 21-opening coil, 22-closing coil and 23-physical pressure plate.

Detailed Description

The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application to assist in understanding, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

The cabinet door of the common transformer cabinet of current data center adopts mechanical lock, and occasional vibration etc. can lead to travel switch's falling, and travel switch state feedback error this moment, higher level's mistake tripping operation, circuit have a power failure. The common door control logic of the transformer cabinet is mainly door opening tripping logic, is simpler, and the safety protection performance can be further improved.

In order to solve the problem of the above-mentioned false tripping, improve the reliability in operation, and further improve safe and reliable protection, avoid the occurrence of a personal electric shock casualty event, the embodiment of the application provides a transformer gating system.

According to an embodiment of the present application, a transformer gating system is shown in fig. 1, and includes: the electromagnetic locks 11 are mounted on corresponding transformer cabinet doors and used for opening and closing the transformer cabinet doors; each electromagnetic lock 11 is connected with a transformer outgoing line power supply.

According to the transformer door control system, each cabinet door of the transformer cabinet 10 is provided with the electromagnetic lock 11, on one hand, as long as the transformer is electrified, the electromagnetic lock 11 is locked, and accidental door opening of a user is prevented; on the other hand, electromagnetic lock 11 can not accidentally vibrate, thereby can not lead to travel switch on the transformer cabinet door drops, avoids producing the mistake tripping operation because of travel switch state feedback mistake, and the circuit cuts off the power supply.

On the basis of the foregoing embodiment, optionally, as shown in fig. 2, the transformer gating system includes: the travel switches are mounted on the corresponding transformer cabinet doors and used for detecting the opening and closing states of the transformer cabinet doors; after the normally closed contacts 12 of each travel switch are connected in parallel, the trip circuit of the upper unit 20 connected with the high-voltage side of the transformer is connected.

Optionally, the trip circuit includes a tripping coil 21, and the tripping coil 21 is used for triggering a tripping operation of the circuit breaker of the superior unit 20.

Wherein the upper unit 20 includes a medium voltage cabinet or a high voltage cabinet. For example, in the data center scenario, the higher level unit 20 of the voltage cabinet 10 may select a medium voltage cabinet, typically providing that 1kV and above to 10kV is a medium voltage cabinet, and 35kV and above a high voltage cabinet.

Taking a dry-type transformer and a medium-voltage cabinet as an example, as shown in fig. 2, the transformer cabinet 10 is provided with 4 cabinet doors, and normally closed contacts 12 (when the door is closed, the travel switch is opened) of 4 travel switches of the 4 cabinet doors are connected in parallel and then connected with a trip circuit (i.e., a tripping circuit) of the medium-voltage cabinet, so that when the transformer operates, the door is opened and the trip is performed. It will be appreciated that as long as any 1 of the transformer cabinet doors is opened, the trip loop is open, causing a trip of the medium voltage cabinet.

On the basis of the above embodiment, as shown in fig. 3, optionally, after the normally open contact 13 of each travel switch is connected in series, the closing circuit of the upper unit 20 is connected.

Optionally, the switching-on loop includes a switching-on coil 22, and the switching-on coil 22 is configured to trigger a switching-on action of the circuit breaker of the upper unit 20.

Similarly, taking a dry-type transformer and a medium-voltage cabinet as an example, as shown in fig. 3, normally open contacts 13 (the travel switches are closed when the doors are closed) of 4 travel switches of 4 cabinet doors are connected in series and then connected to a closing loop of the medium-voltage cabinet, so that closing is prohibited when the doors are opened. It can be understood that as long as any 1 transformer cabinet door is not closed, the closing loop is not communicated, and the medium voltage cabinet cannot be closed. For example, after the inspection and maintenance are completed, as long as one transformer cabinet door is not closed, the closing of the closing loop cannot be realized, so that misoperation and personnel safety accidents are prevented.

In an embodiment, optionally, a temperature controller and a heat sink are installed in the transformer cabinet 10, and the temperature controller and the heat sink are electrically connected to a power supply unit of a low voltage cabinet connected to the low voltage side of the transformer.

Taking the medium voltage cabinet as an example, the high voltage side of the transformer is connected with the medium voltage cabinet, the low voltage side of the transformer is connected with the low voltage cabinet, and the power supply of the equipment in the transformer cabinet is from the power supply inlet end of the low voltage cabinet.

In one embodiment, optionally, the trip loop is tripped when the thermostat detects that the temperature inside the transformer cabinet 10 exceeds a threshold.

For example, when the system is in normal operation, the temperature controller detects high temperature, and then the trip circuit of the medium voltage cabinet trips to ensure that the transformer operates within a normal temperature range.

In one embodiment, the trip circuit is optionally designed with a physical hold down 23 at medium voltage to further enable trip circuit protection.

A power supply and distribution system according to an embodiment of the present application includes: the transformer gating system of any of the above embodiments.

The power supply and distribution system of the embodiment of the application can achieve the technical effect of the transformer gating system, and is not repeated herein.

According to the transformer door control system, the electromagnetic lock 11 is installed on each cabinet door, so that on one hand, personnel safety accidents caused by accidental door opening are prevented; on the other hand, the electromagnetic lock 11 does not vibrate accidentally, so that the travel switch is not dropped, and false tripping and circuit outage caused by the feedback error of the state of the travel switch are avoided. The travel switch is connected with a tripping loop of the superior unit 20, so that tripping is realized when the door is opened in operation, and the superior unit 20 is forbidden to be switched on when the door is opened; further reduce the risk of occurence of failure, improve the fail safe nature of power supply and distribution system. Potential fault hidden dangers and personal injuries caused by misoperation of personnel or error signals of equipment are avoided from three different angles.

The above-described embodiments are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The transformer door control system is characterized by comprising a plurality of electromagnetic locks, wherein the electromagnetic locks are arranged on corresponding transformer cabinet doors and used for opening and closing the transformer cabinet doors; each electromagnetic lock is connected with a transformer outgoing line power supply;

the transformer cabinet door detection device comprises a plurality of travel switches, wherein the travel switches are arranged on corresponding transformer cabinet doors and used for detecting the opening and closing states of the transformer cabinet doors; after the normally closed contacts of each travel switch are connected in parallel, the normally closed contacts of each travel switch are connected with a tripping circuit of a superior unit connected with the high-voltage side of the transformer;

the upper unit comprises a medium-voltage cabinet or a high-voltage cabinet, and the trip circuit is arranged in the medium-voltage cabinet or the high-voltage cabinet;

and a temperature controller is installed in the transformer cabinet, and when the temperature controller detects that the temperature in the transformer cabinet exceeds a threshold value, the tripping circuit trips.

2. The system of claim 1, wherein the trip circuit comprises a trip coil, wherein the trip coil is used to trigger a trip action of a circuit breaker of the superordinate unit.

3. The system of claim 1, wherein the normally open contact of each travel switch is connected in series to connect a closing circuit of the superordinate unit.

4. The system of claim 3, wherein the closing circuit comprises a closing coil, wherein the closing coil is configured to trigger a closing action of a circuit breaker of the superordinate unit.

5. The system of claim 1, wherein a temperature controller and a heat sink are installed in the transformer cabinet, and the temperature controller and the heat sink are electrically connected with a power supply unit of a low-voltage cabinet connected with the low-voltage side of the transformer.

6. The system of claim 1, wherein a physical hold down is provided on the trip circuit.

7. A power supply and distribution system, comprising: the transformer gating system of any of claims 1 to 6.