CN103872753A

CN103872753A - Wiring circuit for UPS bypass standby power supply

Info

Publication number: CN103872753A
Application number: CN201410134685.9A
Authority: CN
Inventors: 蔡斌; 邱志恒; 李登伟; 郭子学; 姜宏民; 周永胜; 白志伟; 李文泊; 袁宝和; 陈雪
Original assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Current assignee: Research Institute of Physical and Chemical Engineering of Nuclear Industry
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-06-18

Abstract

The invention discloses a wiring circuit for a UPS bypass standby power supply. The wiring circuit comprises a first UPS, a second UPS, a main circuit power supply line and a standby power supply line, wherein the main circuit power supply line and the bypass power supply line supply power to the first UPS and the second UPS respectively. First UPS output and second UPS output form UPS parallel connection output sequentially through parallel connection of a first UPS output connection indicating lamp and a second UPS output connection indicating lamp and through parallel connection of a first UPS output connection breaker and a second UPS output connection breaker. The UPS parallel connection output supplies power to a load. A manual bypass input circuit is connected with a second UPS bypass power supply. A manual bypass output circuit is connected with the UPS parallel connection output. A manual bypass connection breaker is arranged between the manual bypass input circuit and the manual bypass output circuit. According to the wiring circuit, a UPS power supply output circuit is connected with a mains supply line, and therefore two power supply modes are effectively combined, uninterruptible power supply between the UPSs and the mains supply is achieved, and electric power supply can be switched and kept standby between the circuits of the two power supply modes.

Description

The connection circuit of UPS bypass stand-by power supply

Technical field

The invention belongs to the circuit arrangement of a kind of power supply or distribution, be specifically related to a kind of connection circuit of UPS bypass stand-by power supply.

Background technology

In electric power system, the electric power system that maintains the normal operation of emphasis equipment must have continuity, stability and reliability, ensures all the time the uninterrupted supply of electric power.

Electric power system is by mains-supplied and UPS(UPS-Uninterruptible Power Supplies) powering forms, in the pilot system of emphasis equipment, need to carry out long-term reliability test, need in the meantime providing powerful support for of electric power system, particularly UPS uninterrupted power supply has extremely important effect to whole system, the long-term uninterrupted power supply of emphasis critical position, many places is being provided, and to meet the instructions for use of system, its safe and stable operation is the guarantee of whole pilot system safety.

But find in actual use; UPS is not definitely reliable; also need to carry out regular maintenance work; also there will be disorderly closedown phenomenon; under long-time power interrupt condition, also can exhaust storage battery energy and occur shutdown situation, in long examination process, inevitably need to carry out more changing jobs etc. of UPS simultaneously.In sum, need to be in system a set of rational stand-by power supply mode of design construction, reach in the process breaking down at UPS, realize the uninterrupted supply of electric power.

Summary of the invention

The present invention proposes for addressing the above problem, and its objective is the connection circuit that a kind of UPS bypass stand-by power supply is provided.

Technical scheme of the present invention is: the connection circuit of UPS bypass stand-by power supply, comprise 1#UPS, 2#UPS, be respectively the main road supply line of 1#UPS and 2#UPS power supply, bypass power supply circuit, 1#UPS output and 2#UPS output are taken up in order of priority and are exported and connected indicator light by 1#UPS, indicator light is connected in 2#UPS output and circuit breaker is connected in 1#UPS output, the circuit breaker UPS of formation in parallel parallel operation output is connected in 2#UPS output, UPS parallel operation output powers to the load, manual bypass incoming line is connected with 2#UPS bypass power supply power supply, manual bypass outlet line is connected with UPS parallel operation output, between manual bypass incoming line and manual bypass outlet line, be provided with manual bypass and connect circuit breaker.

Described 1#UPS and 2#UPS be for having main road powering mode, bypass power supply pattern, manual bypass pattern, UPS that can parallel operation output.

The present invention, by UPS power outlet line and mains-supplied connection, couples together two kinds of supply power modes effectively, has realized the uninterrupted power supply of UPS and mains-supplied, and two kinds of supplies of electric power between supply power mode circuit can be switched mutually with for subsequent use; All power-off of original system in the maintenance process of UPS, are effectively avoided, the then process of dismounting, the system of having eliminated does not have the potential faults of extension wire in equipment fault and equipment replacement process, has met the requirement of the continuous uninterrupted power supplies of internal system emphasis equipment needs.

Brief description of the drawings

Fig. 1 is the winding diagram of a kind of UPS electric power system main road power supply of prior art;

Fig. 2 is the winding diagram of a kind of UPS electric power system bypass power supply of prior art;

Fig. 3 is the winding diagram of a kind of UPS electric power system outlet line of prior art;

Fig. 4 is the winding diagram of a kind of UPS electric power system outlet line access manual bypass extension wire that provides in the present invention;

Wherein:

1 1# line 2 1#UPS main road power supplies

3 UPS main road power supply indicator light 4 1#UPS main roads are for electrical circuit breakers

Indicator light 6 1#UPS main road power supply input powers are connected in 5 1#UPS main road power supplies

7 1#UPS 8 2#UPS

Indicator light is connected in 9 2#UPS main road power supply input power 10 2#UPS main road power supplies

11 2#UPS main roads are for electrical circuit breakers 12 2#UPS main road power supplies

13 2# line 14 1#UPS bypass power supply power supplys

15 UPS bypass power supply indicator light 16 1#UPS bypass power supply circuit breakers

17 1#UPS bypass power supplies are connected indicator light 18 1#UPS bypass power supply input powers

19 2#UPS bypass power supply input power 20 2#UPS bypass power supplies are connected indicator light

21 2#UPS bypass power supply circuit breaker 22 2#UPS bypass power supply power supplys

23 1#UPS export 24 1#UPS outputs and connect indicator light

Circuit breaker 26 UPS parallel operation outputs are connected in 25 1#UPS outputs

Circuit breaker is connected in 27 load 28 2#UPS outputs

Indicator light 30 2#UPS outputs are connected in 29 2#UPS outputs

31 UPS manual bypass outlet line 32 UPS manual bypass are connected circuit breaker

33 UPS manual bypass incoming lines.

Embodiment

Below, with reference to drawings and Examples, the present invention is described in detail:

As shown in Figure 1, the winding diagram of UPS electric power system main road power supply, the 1# line 1 of normal power supply is 1#UPS main road power supply 2, the power supply of 2#UPS main road power supply, when connection, UPS main road power supply indicator light 3 is lighted, access in 1#UPS7 as 1#UPS main road power supply input power 6 for electrical circuit breakers 4 by 1#UPS main road, when connection, 1#UPS main road power supply connection indicator light 5 is lighted, and 1#UPS7 is carried out to normal power supply; Access in 2#UPS8 as 2#UPS main road power supply input power 9 for electrical circuit breakers 11 by 2#UPS main road, when connection, 2#UPS main road power supply connection indicator light 10 is lighted, 2#UPS8 is carried out to normal power supply, UPS internal rectifier will be supplied with inverter behind commercial power rectification, powered to the load as UPS power supply output by inverter output.

As shown in Figure 2, the winding diagram of UPS electric power system bypass power supply, the 2# line 13 of power supply in main road power supply winding diagram will be different from, for 1#UPS bypass power

supply power supply

14,2#UPS bypass power supply power supply 22 is powered, wherein, 1#UPS bypass power supply power supply 14 accesses 1#UPS7 by 1#UPS bypass power

supply circuit breaker

16, and 1#UPS7 is carried out to bypass power supply, 2#UPS bypass power supply power supply 22 accesses 2#UPS8 by 2#UPS bypass power

supply circuit breaker

21, 2#UPS is carried out to bypass power supply, when connection, bypass power supply indicator light 15 is lighted, occur under power failure or failure condition in main road power supply, when after running down of battery, UPS automatically switches to bypass mode, isolating transformer by UPS inside is directly powered to the load as 1#UPS bypass power supply input power 18 by civil power, when output is connected, 1#UPS bypass power supply connection indicator light 17 is lighted, or directly powered to the load as 2#UPS bypass power supply input power 19 by civil power by the isolating transformer of UPS inside, when output is connected, 2#UPS bypass power supply connection indicator light 20 is lighted, in above-mentioned situation, UPS relies on bypass power supply completely.

As shown in Figure 3,1

#UPS output

23 and 2#UPS output 30 be taken up in order of priority export by 1#UPS connect indicator light 24, indicator light 29 is connected in 2#UPS output and circuit breaker 25 is connected in 1#UPS output, circuit breaker 28 UPS of formation parallel operation in parallel output 26 is connected in 2#UPS output, parallel operation is exported 26 and is powered to load 27; If when wherein separate unit UPS breaks down, can be powered to load 27 by normal UPS.

As shown in Figure 4, use cable that UPS manual bypass incoming line 33 is connected with the bypass power supply power supply 22 of 2#UPS8, UPS manual bypass outlet line 31 is connected with UPS parallel operation outlet line 26, manual bypass is inputted and between 33 circuits and manual bypass outlet line 31, is provided with manual bypass and connects circuit breaker 32, in actual use, in the time that 2 UPS all break down extreme cases such as maybe needing maintenance, power supply can be set to the output of manual bypass pattern, now UPS output 26 and bypass power

supply power supply

14, 22 is consistent, now connect circuit breaker 32 by closed UPS manual bypass, disconnect 1#UPS output and connect

circuit breaker

25 and 2#UPS output connection circuit breaker 28, UPS manual bypass power supply output 31 is directly powered to load 27.

Described 1#UPS7 and 2#UPS8 be for having main road powering mode, bypass power supply pattern, manual bypass pattern, UPS that can parallel operation output.

Claims

1. the connection circuit of a UPS bypass stand-by power supply, comprise 1#UPS(7), 2#UPS(8), be respectively 1#UPS(7) and 2#UPS(8) power supply main road supply line, bypass power supply circuit, 1#UPS output (23) and 2#UPS output (30) are taken up in order of priority and are exported and connected indicator light (24) by 1#UPS, indicator light (29) is connected in 2#UPS output and circuit breaker (25) is connected in 1#UPS output, circuit breaker (28) UPS of formation in parallel parallel operation output (26) is connected in 2#UPS output, UPS parallel operation output (26) is powered to load (27), it is characterized in that: manual bypass incoming line (33) is connected with 2#UPS bypass power supply power supply (22), manual bypass outlet line (31) is connected with UPS parallel operation output (26), between manual bypass incoming line (33) and manual bypass outlet line (31), be provided with manual bypass and connect circuit breaker (32).

2. the connection circuit of UPS bypass stand-by power supply according to claim 1, is characterized in that: described 1#UPS(7) with 2#UPS(8) for thering is main road powering mode, bypass power supply pattern, manual bypass pattern, UPS that can parallel operation output.