CN214337635U - UPS uninterrupted power supply isolation system - Google Patents

Abstract

The utility model relates to an uninterrupted power source technical field specifically is a UPS uninterrupted power supply isolation system, including the input power cord, reserve UPS and auto-change over device, the input power cord is connected between DC power supply and reserve UPS input, reserve UPS output and auto-change over device electric connection, the auto-change over device includes bypass circuit breaker and reserve output circuit breaker, bypass circuit breaker and reserve output circuit breaker are parallelly connected, reserve UPS output and reserve output circuit breaker input terminal electric connection, work UPS output and bypass circuit breaker input terminal electric connection, work output circuit breaker and bypass circuit breaker are parallelly connected, bypass circuit breaker and reserve output circuit breaker's output terminal all with load electric connection; the utility model discloses can realize trouble UPS and reserve UPS's undisturbed switching, realize that trouble UPS keeps apart and resumes the overall process load and does not cut off the power supply, easy operation can avoid taking place two way power asynchronous short circuit fault side by side, can prevent again that the load from losing the electricity in the operation process, has high reliability.

Description

UPS uninterrupted power supply isolation system

Technical Field

The utility model relates to an uninterrupted power source technical field specifically is a UPS uninterrupted power supply isolated system.

Background

An Uninterruptible Power Supply (UPS) of a power system is an important component of the power system, along with the continuous development of information technology, various online monitoring, data communication and protection devices put forward stricter and stricter requirements on the quality of power supply, and if the power supply system has phenomena of sudden power failure, surge or interference and the like, the normal work of the online monitoring, data communication devices and the like is directly influenced, and the consequences are immeasurable. Reliable operation of UPS devices is particularly important to ensure safe operation of the equipment. The conventional small UPS is generally provided with an alternating current power supply and a direct current power supply, and has three working modes, namely a normal mode, a direct current mode and a bypass mode.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a UPS is isolated system not cutting off power supply can avoid taking place the non-synchronization short circuit fault that stands side by side of two way powers, can prevent again that the load from losing the electricity in the operation process, has high reliability.

In order to solve the above technical problems, the utility model relates to a UPS uninterrupted power supply isolation system, which comprises a DC power supply, an AC power supply, a load, an AC input circuit breaker, a DC input circuit breaker, a working UPS and a working output circuit breaker, wherein the AC power supply and the DC power supply are respectively electrically connected with the input end of the working UPS, the output end of the working UPS is electrically connected with the load through a wire, the working output circuit breaker is connected between the working UPS and the load, the UPS further comprises an input power line, a standby UPS and a switching device, the input power line is connected between the DC power supply and the input end of the standby UPS, the output end of the standby UPS is electrically connected with the switching device, the switching device comprises a bypass circuit breaker and a standby output circuit breaker, the bypass circuit breaker is connected with the standby output circuit breaker in parallel, the output end of the standby UPS is electrically connected with the input terminal of the standby output circuit breaker, the output end of the working UPS is electrically connected with the input terminal of the bypass circuit breaker, the work output circuit breaker is connected with the bypass circuit breaker in parallel, and the output terminals of the bypass circuit breaker and the standby output circuit breaker are both electrically connected with the load.

Further, still including bypass power cord and output power cord, bypass power cord one end is connected on bypass circuit breaker input, and the bypass power cord other end is connected between work UPS and work output circuit breaker, and output power cord one end is connected on bypass circuit breaker output and output circuit breaker output, the output power cord other end and load electric connection.

Furthermore, a standby input circuit breaker is connected between the input power line and the standby UPS input end.

Furthermore, the switching device further comprises a control module and a switching button, the control module is electrically connected with the switching button, the control module receives a switching signal of the switching button, and the control module controls the on-off of the bypass circuit breaker and the standby output circuit breaker.

Furthermore, the control module collects output voltage, frequency and phase difference of the working UPS and the standby UPS, and when the phase difference of the working UPS and the standby UPS is less than 5 degrees, the frequency difference is less than 0.2Hz, and the voltage difference is less than 5%, the control module enables the standby output circuit breaker to be switched on and controls the bypass circuit breaker to be switched off after delaying 100 ms.

The utility model has the advantages that: the standby UPS comprises an input power line, a standby UPS and a switching device, wherein the input power line is connected between a direct-current power supply and an input end of the standby UPS, an output end of the standby UPS is electrically connected with the switching device, the switching device comprises a bypass circuit breaker and a standby output circuit breaker, the bypass circuit breaker is connected with the standby output circuit breaker in parallel, an output end of the standby UPS is electrically connected with an input terminal of the standby output circuit breaker, an output end of a working UPS is electrically connected with an input terminal of the bypass circuit breaker, the working output circuit breaker is connected with the bypass circuit breaker in parallel, and output terminals of the bypass circuit breaker and the standby output circuit breaker are electrically connected with a load; the utility model discloses dispose reserve UPS, can regard as the stand-by power supply when trouble UPS overhauls or changes, gather trouble UPS and reserve UPS's output voltage through switching device, judge the voltage difference of two way powers in real time, frequency difference and phase difference, the deciliter of control bypass circuit breaker and reserve output circuit breaker when above three condition all satisfies the requirement, realize trouble UPS and reserve UPS's undisturbed switching, realize that trouble UPS keeps apart and resumes the whole process load uninterrupted power supply, and is simple in operation, can avoid taking place two way power supply asynchronous short-circuit fault side by side, can prevent again that the load from losing power among the operation process, and the high reliability is provided.

Drawings

Fig. 1 is a schematic view of the system of the present invention.

In the figure: 1. a standby UPS; 2. a switching device; 3. a control module; 4. a switch button; 5. a bypass circuit breaker; 6. a standby output circuit breaker; 7. a backup input breaker; 8. an AC input breaker; 9. a direct current input breaker; 10. a work output circuit breaker; 11. a working UPS; 12. a bypass power line; 13. an input power line; 14. an output power line; 15. and (4) loading.

Detailed Description

As shown in FIG. 1, the utility model relates to a UPS uninterrupted power supply isolation system, including DC power supply, AC power supply, load 15, AC input breaker 8, DC input breaker 9, work UPS11 and work output breaker 10, AC power supply and DC power supply are respectively with the input electric connection of work UPS11, work UPS11 output is through wire electric connection with load 15, work output breaker 10 is connected between work UPS11 and load 15, still include input power cord 13, reserve UPS1 and switching device 2, input power cord 13 is connected between DC power supply and reserve UPS1 input, reserve UPS1 output is connected with switching device 2 electric connection, switching device 2 includes bypass breaker 5 and reserve output breaker 6, bypass breaker 5 and reserve output breaker 6 are parallelly connected, reserve 1 output is connected with reserve output breaker 6 input terminal electric connection, the output end of the working UPS11 is electrically connected with the input terminal of the bypass breaker 5, the working output breaker 10 is connected with the bypass breaker 5 in parallel, and the output terminals of the bypass breaker 5 and the standby output breaker 6 are both electrically connected with the load 15.

Furthermore, the power supply device also comprises a bypass power supply line 12 and an output power supply line 14, wherein one end of the bypass power supply line 12 is connected to the input end of the bypass breaker 5, the other end of the bypass power supply line 12 is connected between the working UPS11 and the working output breaker 10, one end of the output power supply line 14 is connected to the output end of the bypass breaker 5 and the output end of the output breaker 6, and the other end of the output power supply line 14 is electrically connected with a load 15.

Further, a standby input breaker 7 is connected between the input power line 13 and the input end of the standby UPS 1.

Further, the switching device 2 further comprises a control module 3 and a switching button 4, the control module 3 is electrically connected with the switching button 4, the control module 3 receives a switching signal of the switching button 4, and the control module 3 controls the on-off of the bypass circuit breaker 5 and the standby output circuit breaker 6.

Further, the control module 3 collects the output voltage, frequency and phase difference of the working UPS11 and the standby UPS1, and when the phase difference between the working UPS11 and the standby UPS1 is less than 5 degrees, the frequency difference is less than 0.2Hz, and the voltage difference is less than 5%, the control module 3 turns on the standby output breaker 6 and controls the bypass breaker 5 to turn off after delaying 100 ms.

The utility model discloses a concrete operation does: keeping the bypass breaker 5, the standby input breaker 7 and the standby output breaker 6 at the off positions, connecting a bypass power line 12 to an input terminal of the fault UPS output breaker 10, connecting an output power line 14 to an output terminal of the fault UPS output breaker 10, and connecting an input power line 13 to alternating current 220V commercial power; the bypass breaker 5 is manually closed, and at the moment, the fault UPS11 supplies power to the load through the work output breaker 10 and the bypass breaker 5 together; the work output breaker 10 is manually disconnected, and at the moment, the fault UPS11 supplies power to the load only through the bypass breaker 5; manually switching on the standby input circuit breaker 7, starting the standby UPS1 to work, pressing the switching button 4, judging that the conditions are met by the control module 3, automatically switching on the standby output circuit breaker 6, delaying 100ms and automatically switching off the bypass circuit breaker 5, and supplying power to a load by the commercial power through the standby UPS1 and the standby output circuit breaker 6; manually disconnecting the AC input circuit breaker 8 and the DC input circuit breaker 9, completely isolating the fault UPS11 from the system, and repairing or replacing the removable fault UPS 11; keeping the AC input breaker 8, the DC input breaker 9 and the work output breaker 10 in the opening state, and connecting the repaired UPS11 into the system; the AC input circuit breaker 8 and the DC input circuit breaker 9 are manually switched on, the UPS11 starts to work, the switching button 4 is pressed, the control module 3 judges that the condition is met, the bypass circuit breaker 5 is automatically switched on, the standby output circuit breaker 6 is automatically switched off after 100ms of delay, and the UPS11 supplies power to the load through the bypass circuit breaker 5 at the moment; the work output breaker 10 is manually closed, and at the moment, the UPS11 supplies power to the load through the work output breaker 10 and the bypass breaker 5 together; the bypass breaker 5 is manually opened, at which time the UPS11 supplies power to the load through the work output breaker 10; and manually disconnecting the standby input circuit breaker 7, removing the bypass power line 12, the input power line 13 and the output power line 14, and recovering the system to a normal operation mode.

The utility model discloses dispose reserve UPS, can regard as the stand-by power supply when trouble UPS overhauls or changes, gather trouble UPS and reserve UPS's output voltage through switching device, judge the voltage difference of two way powers in real time, frequency difference and phase difference, the deciliter of control bypass circuit breaker and reserve output circuit breaker when above three condition all satisfies the requirement, realize trouble UPS and reserve UPS's undisturbed switching, realize that trouble UPS keeps apart and resumes the whole process load uninterrupted power supply, and is simple in operation, can avoid taking place two way power supply asynchronous short-circuit fault side by side, can prevent again that the load from losing power among the operation process, and the high reliability is provided.

Claims (4)

1. The utility model provides a UPS does not cut off power supply isolation system which characterized in that: comprises a direct current power supply, an alternating current power supply, a load (15), an alternating current input breaker (8), a direct current input breaker (9), a working UPS (11) and a working output breaker (10), wherein the alternating current power supply and the direct current power supply are respectively electrically connected with the input end of the working UPS (11), the output end of the working UPS (11) is electrically connected with the load (15) through a lead, the working output breaker (10) is connected between the working UPS (11) and the load (15), the system also comprises an input power line (13), a standby UPS (1) and a switching device (2), the input power line (13) is connected between the direct current power supply and the input end of the standby UPS (1), the output end of the standby UPS (1) is electrically connected with the switching device (2), the switching device (2) comprises a bypass breaker (5) and a standby output breaker (6), the bypass breaker (5) is connected with the standby output breaker (6) in parallel, the output end of the standby UPS (1) is electrically connected with the input terminal of the standby output circuit breaker (6), the output end of the working UPS (11) is electrically connected with the input terminal of the bypass circuit breaker (5), the working output circuit breaker (10) is connected with the bypass circuit breaker (5) in parallel, and the output terminals of the bypass circuit breaker (5) and the standby output circuit breaker (6) are electrically connected with the load (15).

2. The UPS uninterrupted power supply isolation system of claim 1, wherein: still including bypass power cord (12) and output power cord (14), bypass power cord (12) one end is connected on bypass circuit breaker (5) input, and the bypass power cord (12) other end is connected between work UPS (11) and work output circuit breaker (10), and output power cord (14) one end is connected on bypass circuit breaker (5) output and output circuit breaker (6) output, and output power cord (14) other end and load (15) electric connection.

3. The UPS uninterruptible power isolation system of claim 2, wherein: and a standby input circuit breaker (7) is also connected between the input power line (13) and the input end of the standby UPS (1).

4. A UPS uninterruptible power isolation system according to claim 3, wherein: the switching device (2) further comprises a control module (3) and a switching button (4), the control module (3) is electrically connected with the switching button (4), the control module (3) receives a switching signal of the switching button (4), and the control module (3) controls the on-off of the bypass circuit breaker (5) and the standby output circuit breaker (6).

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