CN204732962U - Dual-power switching system - Google Patents

Abstract

The utility model provides a dual power supply switching system. The dual power supply switching system includes: a first power supply, a second power supply, a first ATS and a second ATS, the first ATS includes a first single-pole double-throw switch, and the second ATS includes The second single-pole double-throw switch, the first single-pole double-throw switch includes a first movable end, a first fixed end, and a second fixed end, and the second single-pole double-throw switch includes a second movable end, a third fixed end, and a second fixed end. Four fixed ends, the first power supply is electrically connected to the first fixed end and the third fixed end respectively, the second power supply is electrically connected to the second fixed end and the fourth fixed end respectively; the first load and the second load , the first moving end is electrically connected to the first load, and the second moving end is electrically connected to the second load. The utility model connects two ATSs between two power sources and two loads. When one power source fails and loses power and needs to be switched to another power source, the switching speed is fast, thereby reducing the load to the load as much as possible. loss.

Description

Dual Power Switching System

technical field

The utility model relates to a dual power supply switching system.

Background technique

In an emergency power supply system, when two power supplies provide power to two loads respectively, in order to prevent a power supply from suddenly failing and losing power, the two loads are usually electrically connected through a circuit breaker and the two power supplies and the two loads are connected. Two circuit breakers are respectively arranged between them, and then the three circuit breakers are respectively electrically connected to the controller. When the two power supplies are working normally, the circuit breaker connected between the two loads will be in the open state, and the other two circuit breakers will be in the closed state, so that the two power supplies can provide power to the two loads respectively. When a power supply fails, the circuit breaker connected to the faulty power supply will be disconnected, and the circuit breaker connected between the two loads will be activated, so that the normal power supply can provide power to the two loads at the same time.

However, the switching speed of this kind of power supply switching method is relatively slow, which will bring unnecessary losses to the load in the emergency power supply system.

Utility model content

The technical problem to be solved by the utility model is to overcome the defect that in the prior art, two power supplies provide electric energy to two loads respectively. A dual power switching system.

The utility model solves the problems of the technologies described above through the following technical solutions:

A dual power supply switching system, said dual power supply switching system comprising:

The first power supply, the second power supply, the first ATS (Automatic transfer Switching, dual power supply automatic transfer switch) and the second ATS, the first ATS includes a first single-pole double-throw switch, and the second ATS includes a second single-pole double-throw switch Throw switch, the first single-pole double-throw switch includes a first moving end, a first non-moving end and a second non-moving end, and the second single-pole double-throw switch includes a second moving end, a third non-moving end and a second non-moving end Four fixed terminals, the first power supply is electrically connected to the first fixed terminal and the third fixed terminal, and the second power supply is respectively connected to the second fixed terminal and the fourth fixed terminal. Moving end electrical connection;

A first load and a second load, the first moving end is electrically connected to the first load, and the second moving end is electrically connected to the second load.

Preferably, the dual power supply switching system includes a first circuit breaker, a second circuit breaker and a third circuit breaker, the first power supply is respectively connected to the first non-moving end and the The third fixed terminal is electrically connected, the second power supply is electrically connected to the second fixed terminal and the fourth fixed terminal respectively through the second circuit breaker, and the first movable terminal is electrically connected to the second fixed terminal through the third circuit breaker. The device is electrically connected to the second moving end.

Preferably, the dual power supply switching system further includes a circuit breaker control device, and the first circuit breaker, the second circuit breaker and the third circuit breaker are respectively electrically connected to the circuit breaker control device.

Preferably, the first ATS further includes a first controller, the second ATS further includes a second controller, the first controller is electrically connected to the first moving end, and the second controller electrically connected to the second moving end;

The first controller sends a first control signal to the first moving end, and the second controller sends a second control signal to the second moving end.

The dual power supply switching system is used in an emergency power supply system.

The positive progressive effect of the present utility model is:

The utility model connects two ATSs between two power supplies and two loads. When one power supply fails and loses power and needs to be switched to another power supply, the entire switching process only takes about 50ms, and the switching speed is fast, so that Reduced the loss to the load. The utility model is compatible with two power supply switching modes. In case of failure of the ATS, the switching between the two power supplies can also be realized through the circuit breaker, thereby stably providing electric energy to the two loads.

Description of drawings

FIG. 1 is a schematic structural diagram of a dual power supply switching system according to Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of a dual power supply switching system according to Embodiment 2 of the present invention.

Detailed ways

A preferred embodiment is given below, and the utility model is described more clearly and completely in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, this embodiment 1 provides a dual power supply switching system, the dual power supply switching system includes: a first power supply 1, a second power supply 2, a first ATS3 and a second ATS4, and the first ATS3 includes The first single-pole double-throw switch 5 and the first controller 13, the second ATS4 includes the second single-pole double-throw switch 6 and the second controller 14, the first single-pole double-throw switch 5 includes the first moving end 11, The first fixed end 7 and the second fixed end 8, the second SPDT switch 6 includes a second fixed end 12, a third fixed end 9 and a fourth fixed end 10, the first power supply 1 are electrically connected to the first fixed end 7 and the third fixed end 9 respectively, and the second power supply 2 is electrically connected to the second fixed end 8 and the fourth fixed end 10 respectively, The first controller 13 is electrically connected to the first moving end 11, and the second controller 14 is electrically connected to the second moving end 12; the first load 15 and the second load 16, the first The moving end 11 is electrically connected to the first load 15 , and the second moving end 12 is electrically connected to the second load 16 .

The dual power supply switching system is used in an emergency power supply system. When the first power supply 1 and the second power supply 2 supply power to the first load 15 and the second load 16 respectively, the first moving end 11 and the first moving end 7 closed, the second movable end 12 is closed with the fourth fixed end 10, so that the first power supply 1 is electrically connected with the first load 15, and the second power supply 2 is electrically connected with the second load. 16 electrical connections. When the first power supply 1 fails and loses power, the first controller 13 will send a first control signal to the first moving end 11, and the first moving end 11 will immediately switch to the second The fixed end 8 is closed with the second fixed end 8, so that the second power supply 2 is electrically connected to the first load 15, and the second power supply 2 will simultaneously provide power to the first load 15 and the first load 15. The second load 16 supplies power. When the second power supply 2 fails and loses power, the second controller 14 will send a second control signal to the second moving end 12, and the second moving end 12 will immediately switch to the third The fixed end 9 is closed with the third fixed end 9, so that the first power supply 1 is electrically connected to the second load 16, and the first power supply 1 will simultaneously provide power to the first load 15 and the second load 16. The second load 16 supplies power. Through the first ATS3 and the second ATS4, the entire power switching process only takes about 50 ms, the switching speed is fast, and the impact on the load can be reduced as much as possible.

Example 2

As shown in Figure 2, the dual power switching system provided in Embodiment 2 includes all the components provided in Embodiment 1. The difference between Embodiment 2 and Embodiment 1 is that the dual power switching system also includes a first circuit breaker 17. The second circuit breaker 18, the third circuit breaker 19 and the circuit breaker control device 20, the first power source 1 is connected to the first non-movable end 7 and the third non-movable terminal 7 respectively through the first circuit breaker 17. The moving end 9 is electrically connected, the second power supply 2 is electrically connected to the second moving end 8 and the fourth moving end 10 through the second circuit breaker 18, and the first moving end 11 is connected to the moving end 11 through the second circuit breaker 18. The third circuit breaker 19 is electrically connected to the second moving end 12, and the first circuit breaker 17, the second circuit breaker 18 and the third circuit breaker 19 are respectively electrically connected to the circuit breaker control device 20 .

When the first ATS3 and the second ATS4 can be used normally, the first circuit breaker 17 and the second circuit breaker 18 are always kept closed, and the third circuit breaker 19 is always kept open. When the first ATS3 breaks down and needs to be replaced, disconnect the first circuit breaker 17 and open the third circuit breaker 19 at the same time, so that the first load 15 and the second load 16 are connected in parallel to the second power supply 2, and the second power supply 2 Supply power to the first load 15 and the second load 16 at the same time. When the second ATS4 fails and needs to be replaced, the second circuit breaker 18 is turned off and the third circuit breaker 19 is turned on at the same time, so that the first power supply 1 supplies power to the first load 15 and the second load 16 at the same time. When both the first ATS3 and the second ATS4 fail, after the first ATS3 and the second ATS4 are disassembled, the first power supply 1 is electrically connected to the first load 15, and the second power supply 2 is electrically connected to the second load 16, When it is necessary to switch the power supply, it is only necessary to disconnect the circuit breaker connected to the fault power supply and open the third circuit breaker 19 at the same time, so that the normal power supply continues to supply power to the two loads normally. The circuit breaker control device 20 can open or close the first circuit breaker 17 , the second circuit breaker 18 and the third circuit breaker 19 .

The utility model is compatible with two power supply switching modes. In case of failure of the ATS, the switching between the two power supplies can also be realized through the circuit breaker, thereby stably providing electric energy to the two loads.

Although the specific implementation of the utility model has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims (5)

1. A dual power switching system, characterized in that, the dual power switching system comprises: The first power supply, the second power supply, the first ATS and the second ATS, the first ATS includes a first single-pole double-throw switch, the second ATS includes a second single-pole double-throw switch, and the first single-pole double-throw switch Including a first moving end, a first non-moving end and a second non-moving end, the second SPDT switch includes a second moving end, a third non-moving end and a fourth non-moving end, the first power supply respectively electrically connected to the first fixed end and the third fixed end, and the second power supply is electrically connected to the second fixed end and the fourth fixed end respectively; A first load and a second load, the first moving end is electrically connected to the first load, and the second moving end is electrically connected to the second load. 2. The dual power supply switching system according to claim 1, wherein the dual power supply switching system comprises a first circuit breaker, a second circuit breaker and a third circuit breaker, and the first power supply passes through the first The circuit breaker is electrically connected to the first fixed end and the third fixed end respectively, and the second power supply is electrically connected to the second fixed end and the fourth fixed end respectively through the second circuit breaker. connected, the first moving end is electrically connected to the second moving end through the third circuit breaker. 3. The dual power supply switching system according to claim 2, wherein the dual power supply switching system further comprises a circuit breaker control device, the first circuit breaker, the second circuit breaker and the third circuit breaker The circuit breakers are respectively electrically connected to the circuit breaker control equipment. 4. The dual power supply switching system according to claim 1, wherein the first ATS further comprises a first controller, the second ATS further comprises a second controller, and the first controller is connected to the The first moving end is electrically connected, and the second controller is electrically connected to the second moving end; The first controller sends a first control signal to the first moving end, and the second controller sends a second control signal to the second moving end. 5. The dual power switching system according to any one of claims 1-4, wherein the dual power switching system is used in an emergency power supply system.