CN216872916U

CN216872916U - Safe power distribution device with no power failure of load

Info

Publication number: CN216872916U
Application number: CN202220324561.7U
Authority: CN
Inventors: 毛海彬; 徐用生
Original assignee: TAIYUAN ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE
Current assignee: TAIYUAN ARCHITECTURAL DESIGN AND RESEARCH INSTITUTE
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-07-01
Anticipated expiration: 2032-02-18

Abstract

The utility model belongs to the technical field of electric automatic control systems, and particularly relates to a safe power distribution device without power failure of a load, which comprises a mains supply input power distribution cabinet, wherein a dual-power-supply change-over switch is arranged in the mains supply input power distribution cabinet, the input end of the dual-power-supply change-over switch is respectively electrically connected with a first mains supply incoming line cable and a second mains supply incoming line cable, the output end of the dual-power-supply change-over switch is connected with a first bus through a first mutual inductor, the first bus is sequentially connected with a UPS host and a UPS output feeder cabinet through a first switch, the first bus is electrically connected with a bypass cable through a second switch, the bypass cable is connected with the UPS output feeder cabinet through a fourth switch, when a UPS power supply fails and the load is ensured not to be powered off, a manual maintenance bypass is started, the UPS can be shut down and quit from the UPS power supply system, and the power supply stability of the whole power supply system is improved.

Description

Safe power distribution device with no power failure of load

Technical Field

The utility model belongs to the technical field of electric automatic control systems, and particularly relates to a safe power distribution device in a state that a load is not powered off.

Background

With the increase of high-power electric equipment, the demand on electric energy is increased, but when the electric equipment is aged or is manually operated by mistake, the equipment is often powered off; in order to prevent the device from being suddenly powered off, a UPS branch circuit is incorporated in the power supply circuit to ensure continuous power supply. When the UPS fails, the circuit can automatically jump to the electronic bypass of the UPS, and the professional technical personnel can make the UPS go to the maintenance bypass, so that the field maintenance of the UPS can be realized. However, the existing UPS only provides an electronic bypass, only a part of UPS power supplies provide a manual maintenance bypass, and when the equipment fails, the UPS body cannot be directly removed for maintenance or replaced with new equipment without power failure, and the load cannot be guaranteed against power failure.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides the power distribution device which can be quickly switched to an external power supply for temporary power supply under the condition that the UPS fails and the load is not powered off.

In order to realize the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a safe distribution device that load does not fall down, includes commercial power input switch board and UPS output feeder cabinet, establishes dual power change over switch in the commercial power input switch board, and dual power change over switch's input is connected with first commercial power inlet wire cable, second commercial power inlet wire cable electricity respectively, guarantees the stable power supply of UPS output feeder cabinet.

The output end of the double-power-supply change-over switch is connected with a first bus through a first mutual inductor, the first bus is sequentially electrically connected with an input end of a UPS input cable and an input end of a UPS host through the first switch, the output end of the UPS host is electrically connected with a UPS output cable, a second bus is arranged in the UPS output feeder cabinet, the UPS output cable is sequentially electrically connected with input ends of a second mutual inductor and the second bus through a third switch, and the output end of the second bus is respectively electrically connected with a plurality of IT devices. This power supply branch supplies power to UPS output feeder cabinet, and when circuit fault appeared, the UPS host computer was supplied power to UPS output feeder cabinet is stable, guarantees not to cut off the power supply.

The UPS host is internally provided with a first manual maintenance bypass and an electronic bypass, and when a circuit fault occurs, the maintenance of the power supply branch is realized under the power supply state of the UPS host.

The first bus is electrically connected with a bypass cable through a second switch, the bypass cable is electrically connected with the input ends of the second mutual inductor and the second bus in sequence through a fourth switch, the output end of the second bus is electrically connected with the IT equipment respectively, and the second bus supplies power for the IT equipment.

A first lightning protection device is connected in parallel between the first mutual inductor and the first bus, and a second lightning protection device is connected in parallel between the second mutual inductor and the second bus, so that the electricity utilization safety is ensured.

The first display is arranged on the commercial power input power distribution cabinet and indicates the running state of the commercial power input power distribution cabinet.

The UPS output feeder cabinet is provided with a second display and a third display, the second display indicates the running state of the UPS output feeder cabinet, the third display is used for displaying the second manual maintenance bypass state, and the voltage and the phase sequence parameters of the upper opening of the switch are electronically displayed.

Still be connected with a plurality of branch circuit switch electricity on the first busbar, branch circuit switch links to each other with other consumer, and the increase and decrease of specific consumer is according to actual need and decide.

Compared with the prior art, the utility model has the following specific beneficial effects: according to the utility model, the manual maintenance bypass is additionally arranged in the power supply system, when the UPS fails and under the condition that the load is not powered off, the second manual maintenance bypass is started, the UPS can be shut down and quit the UPS system, the stable power supply of the load is ensured, and the power supply stability of the whole UPS system is improved.

Drawings

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

In the drawing, 1 is a utility power input distribution cabinet, 11 is a dual power transfer switch, 12 is a first utility power incoming cable, 13 is a second utility power incoming cable, 14 is a first transformer, 15 is a first bus, 16 is a first switch, 17 is a second switch, 18 is a first lightning protection device, 19 is a first display, 20 is a branch switch, 2 is a UPS host, 21 is a UPS input cable, 22 is a UPS output cable, 23 is a first manual maintenance bypass, 24 is an electronic bypass, 25 is a rectification input, 26 is an inversion output, 3 is a UPS output feeder cabinet, 31 is a second bus, 32 is a third switch, 33 is a second transformer, 34 is an IT device, 35 is a second manual maintenance bypass, 36 is a second lightning protection device, 37 is a second display, 38 is a third display, and 39 is a fourth switch.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1, a safe power distribution device without power failure of load comprises a mains supply input power distribution cabinet 1 and a UPS output feeder cabinet 3, wherein a dual power supply switch 11 is arranged in the mains supply input power distribution cabinet 1, and an input end of the dual power supply switch 11 is electrically connected with a first mains supply incoming cable 12 and a second mains supply incoming cable 13 respectively, so as to ensure stable power supply of the UPS output feeder cabinet 3.

The output end of the dual power supply changeover switch 11 is connected with a first bus 15 through a first mutual inductor 14, the first bus 15 is sequentially electrically connected with an input end of a UPS input cable 21 and an input end of a UPS host machine 2 through a first switch 16, the output end of the UPS host machine 2 is electrically connected with a UPS output cable 22, a second bus 31 is arranged in the UPS output feeder cabinet 3, the UPS output cable 22 is sequentially electrically connected with input ends of a second mutual inductor 33 and a second bus 31 through a third switch 32, and the output end of the second bus 31 is respectively electrically connected with a plurality of IT devices 34. This power supply branch is to the 3 power supplies of UPS output feeder cabinet, and when circuit fault appeared, UPS host computer 2 was to 3 stable power supplies of UPS output feeder cabinet, guarantees not to cut off the power supply.

A first manual maintenance bypass 23, an electronic bypass 24, a rectification input 25 and an inversion output 26 are arranged in the UPS host 2, circuit faults occur, and maintenance of a power supply branch is achieved in the power supply state of the UPS host 2.

The first bus 15 is electrically connected to a bypass cable through the second switch 17, the bypass cable is electrically connected to the input ends of the second transformer 33 and the second bus 31 in sequence through the fourth switch 39, the output end of the second bus 31 is electrically connected to the plurality of IT devices 34, and the second bus 31 supplies power to the plurality of IT devices 34.

A first lightning protection device 18 is connected in parallel between the first transformer 14 and the first bus 15, and a second lightning protection device 36 is connected in parallel between the second transformer 33 and the second bus 31, so that the power utilization safety is ensured.

The first display 19 is arranged on the commercial power input power distribution cabinet 1, and the first display 19 indicates the running state of the commercial power input power distribution cabinet 1.

A second display 37 and a third display 38 are mounted on the UPS output feeder cabinet 3, the second display 37 indicating the operational status of the UPS output feeder cabinet 3, the third display 38 displaying the status of the second manual service bypass 35, electronically displaying the voltage and phase sequence parameters at the upper port of the switch, and by status monitoring, determining under what conditions to operate the service bypass and under what conditions to not operate.

The first bus 15 is also electrically connected with a plurality of branch switches 20, the branch switches 20 are connected with other electric equipment, and the increase and decrease of the specific electric equipment are determined according to actual needs.

This distribution device has increased a second switch 17 for the power supply of UPS output feeder cabinet 3 through in commercial power input switch board 1, add a fourth switch 39 with the input switch board with the model in UPS output feeder cabinet 3, the end opening of fourth switch 39 is parallelly connected with the end opening of third switch 32, install voltage monitoring and phase place monitoring on third switch 32 and fourth switch 39, when two switches guarantee that the phase place is unanimous, under the unanimous condition of voltage, guarantee that UPS output feeder cabinet 3 works under the maintenance bypass. In the actual use process, the fourth switch 39 is operated to be switched on, then the third switch 32 is operated to be powered off, and the UPS power supply system is quitted according to the shutdown operation program of the UPS host machine 2.

When the UPS main unit 2 is in failure, the UPS is automatically switched to the first manual maintenance bypass 23 of the UPS main unit 2, a professional enters the UPS into the second manual maintenance bypass 35, the second switch 17 for supplying power to the UPS output feeder cabinet 3 from the mains supply input power distribution cabinet 1 is manually closed, and then an operator can observe whether the voltage/phase sequence of the third switch 32 is consistent with the voltage/phase sequence of the fourth switch 39 in the second manual maintenance bypass 35 through a display.

At this time, the UPS output feeder cabinet 3 enters two paths of power from the mains input power distribution cabinet 1, it needs to test whether the upper voltage and the lower voltage of the additional lock switch are consistent, if they are consistent, there is no phase difference, at this time, the lock can be removed, and the fourth switch 39 of the second manual maintenance bypass 35 of the UPS output feeder cabinet 3 is closed. After the fourth switch 39 of the maintenance bypass is closed, the second switch 17 can be powered off, the UPS main unit 2 is powered off, the first switch 16 of the commercial power input power distribution cabinet 1 for supplying power to the UPS is powered off, the dc power supply switch is closed, and the UPS system is removed. The load is directly supplied by commercial power, and new equipment needs to be replaced in place as soon as possible, so that the normal work of the load is ensured. After the replacement is completed, the replaced UPS system needs to be debugged in place, and the replacement is completed by professional technical personnel.

The above description is intended only to illustrate the preferred embodiments of the present invention, and should not be construed as limiting the utility model, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The safe power distribution device is characterized by comprising a mains supply input power distribution cabinet (1) and a UPS output feeder cabinet (3), wherein a dual-power-supply switch (11) is arranged in the mains supply input power distribution cabinet (1), the input end of the dual-power-supply switch (11) is electrically connected with a first mains supply incoming cable (12) and a second mains supply incoming cable (13) respectively, the output end of the dual-power-supply switch (11) is connected with a first bus (15) through a first mutual inductor (14), the first bus (15) is electrically connected with the input ends of a UPS input cable (21) and a UPS host (2) in sequence through a first switch (16), the output end of the UPS host (2) is electrically connected with a UPS output cable (22), and the first bus (15) is electrically connected with a bypass cable through a second switch (17);

a first manual maintenance bypass (23) is arranged in the UPS main machine (2);

establish second bus (31) in UPS output feeder cabinet (3), UPS output cable (22) are connected with the input of second mutual-inductor (33), second bus (31) through third switch (32) in proper order, the bypass cable is connected with the input of second mutual-inductor (33), second bus (31) in proper order through fourth switch (39) is electric, the output of second bus (31) is connected with a plurality of IT equipment (34) electricity respectively.

2. A safety distribution device without power loss of load according to claim 1, characterized in that a first lightning protection (18) is connected in parallel between the first transformer (14) and the first bus bar (15), and a second lightning protection (36) is connected in parallel between the second transformer (33) and the second bus bar (31).

3. A safety distribution unit without loss of power to the load according to claim 1, characterized in that said mains input distribution cabinet (1) is equipped with a first display (19).

4. A safety distribution unit without loss of power to a load according to claim 1, wherein the UPS output feeder cabinet (3) is provided with a second display (37) and a third display (38).

5. A safety device according to claim 1, characterized in that said first bus bar (15) is also electrically connected to a plurality of branch switches (20).