CN103746447A - Automatic switching method of redundant AC power - Google Patents
Automatic switching method of redundant AC power Download PDFInfo
- Publication number
- CN103746447A CN103746447A CN201310723213.2A CN201310723213A CN103746447A CN 103746447 A CN103746447 A CN 103746447A CN 201310723213 A CN201310723213 A CN 201310723213A CN 103746447 A CN103746447 A CN 103746447A
- Authority
- CN
- China
- Prior art keywords
- contactor
- power supply
- output
- group
- normally
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention provides an automatic switching method of redundant AC power. In a mains supply line, online UPS power supply is connected to realize redundant power supply. During failures of the mains or online UPS power supply, status switching by the online UPS power supply or mains supply is realized through an AC contactor. A phase line and a zero line of the mains or the online UPS power supply are respectively connected with a drive coil of the AC contactor and an input end of a normally open contact of the AC contactor. An output end of the normally open contact of the AC contactor is an output end for powering equipment. A phase line and a zero line of an output end of the other way of the online UPS power supply are correspondingly connected with an input end of a corresponding normally-closed contact of the AC contactor. Output ends of the normally-closed contact and the normally open contact of the AC contactor are correspondingly connected. By redundant power supply of the two-way UPS power supply and mains, switching combination of the three-way power supplies is realized through the AC contactor. Thus, it can be ensured that system power-loosing accidents will not happen even if both two-way UPS power supplies break down.
Description
Technical field
The present invention relates to a kind of method that redundant power automatically switches that realizes.
Background technology
At the railway system and industrial production automation control field, in computer interlock or microcomputer detecting system the inside, often to use ups power and prevent that external ac power source power-off from causing the equipment dead electricity of whole system, cause system operation paralysis, thus the contact stable operation that jeopardizes railways train operation or automatic production line.Therefore, to computer, the system such as chain or microcomputer monitoring, often adopts redundant power supply equipment to guarantee system power supply.
But in practice, because power supply redundancy way is not considered fully, cause when ups power fault, the situation that does not play due redundancy switching happens occasionally.Cause computer interlock or microcomputer detecting system sky can cause jeopardizing driving completely or the generation of the accident of production safety, cause serious consequence.
Summary of the invention
The present invention is directed to prior art deficiency, a kind of interchange redundant power automatic switching method has been proposed, can ensure reliable switching when therein one of 2 road ups powers breaks down, even if or also can not cause system dead electricity accident to occur in the situation that 2 road ups powers all break down.
The technical solution adopted in the present invention is:
A kind of redundancy AC power automatic switching method, in mains-supplied circuit, connect a road on line type UPS power supply and realize redundant power supply, when municipal power failure, by A.C. contactor, realize and utilize the state of on line type UPS Power supply to switch, the phase line of described civil power is connected respectively the drive coil of A.C. contactor and the input of one group normally opened contact with zero line, and this group normally opened contact output of described A.C. contactor is equipment power supply output; The corresponding input that is connected one group of normally-closed contact that described A.C. contactor is corresponding of the phase line of the output of described on line type UPS power supply and zero line, the normally-closed contact that described A.C. contactor is same group, the corresponding connection of the output of normally opened contact.
Described A.C. contactor is accessed by air switch in described mains electricity input end; Described mains electricity input end connects the input of online ups power by air switch.
A kind of redundancy AC power automatic switching method, in mains-supplied circuit, connect two-way on line type UPS power supply and realize redundant power supply, by A.C. contactor, automatically switch and export the common source of a road redundancy, assurance provides non-stop run power supply to power supply unit, adopt two on line type UPS power supply UPSA and UPSB, its input connects civil power by air switch respectively, the phase line of the output of described on line type UPS power supply UPSA or UPSB is connected respectively the drive coil of A.C. contactor and the input of one group normally-closed contact with zero line, this group normally-closed contact output of described A.C. contactor is equipment power supply output, the corresponding input that is connected one group of normally opened contact that described A.C. contactor is corresponding of the phase line of the output of described on line type UPS power supply UPSB or UPSA and zero line, the normally-closed contact that described A.C. contactor is same group, the corresponding connection of the output of normally opened contact.
A kind of redundancy AC power automatic switching method, in mains-supplied circuit, connect two-way on line type UPS power supply and realize redundant power supply, by A.C. contactor, automatically switch and export the common source of a road redundancy, assurance provides non-stop run power supply to power supply unit, adopt two on line type UPS power supply UPSA and UPSB, its input connects civil power by air switch respectively, described on line type UPS power supply UPSA or phase line and the zero line of UPSB output be connected respectively the input of the drive coil of A.C. contactor KC1 and A.C. contactor KC3 and one group of normally opened contact of A.C. contactor KC3, this group normally opened contact output of described A.C. contactor KC3 is equipment power supply output, the phase line of the output of described on line type UPS power supply UPSB or UPSA is connected the input of the drive coil of A.C. contactor KC2 and one group of normally opened contact of A.C. contactor KC2 with zero line, the normally opened contact output of a group that described A.C. contactor KC2 is corresponding is connected respectively one group of normally-closed contact of A.C. contactor KC3, one group of normally-closed contact input of described A.C. contactor KC1 connects respectively phase line and the zero line of civil power, one group of normally-closed contact input that A.C. contactor KC1 is corresponding connects respectively the input of one group of normally-closed contact of stream contactor KC2, the normally opened contact that described A.C. contactor KC2, A.C. contactor KC3 are same group, the corresponding connection of output of normally-closed contact.
Invention beneficial effect:
1, the present invention exchanges redundant power automatic switching method, can ensure reliable switching when therein one of 2 road ups powers breaks down, even if or also can not cause system dead electricity accident to occur in the situation that 2 road ups powers all break down.
2, the present invention exchanges redundant power automatic switching method, and implementation is simple, and cost is low, and dependable performance can ensure as computer interlock or microcomputer detecting system provide continual working power, for normal production safety provides powerful guarantee.
Accompanying drawing explanation
Fig. 1 is one of redundancy AC power automatic switching method implementation schematic diagram of the present invention;
Fig. 2 is two of redundancy AC power automatic switching method implementation schematic diagram of the present invention.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1
Referring to Fig. 1, the redundancy AC power automatic switching method of the present embodiment, in mains-supplied circuit, connect a road on line type UPS power supply and realize redundant power supply, when municipal power failure, by A.C. contactor KC, realize and utilize the state of on line type UPS Power supply to switch, the phase line of described civil power is connected respectively the drive coil of A.C. contactor KC and the input of one group normally opened contact with zero line, and this group normally opened contact output of described A.C. contactor KC is equipment power supply output; The corresponding input that is connected one group of normally-closed contact that described A.C. contactor is corresponding of the phase line of the output of described on line type UPS power supply and zero line, the normally-closed contact that described A.C. contactor is same group, the corresponding connection of the output of normally opened contact.
Described A.C. contactor is accessed by air switch in described mains electricity input end; Described mains electricity input end connects the input of online ups power by air switch.In figure, k0, k1, k2 are air switch.
Embodiment 2
Referring to Fig. 1, the redundancy AC power automatic switching method of the present embodiment, adopts two on line type UPS power supplys to provide AC 220V working power to system.UPSA and UPSB are automatically switched and are exported the common source of a road redundancy by A.C. contactor KC, and guaranteeing provides non-stop run power supply to power supply unit.
In mains-supplied circuit, connect two-way on line type UPS power supply UPSA and UPSB and realize redundant power supply, the input of two on line type UPS power supply UPSA and UPSB is connected civil power by air switch k1, k2 respectively, the phase line of the output of described on line type UPS power supply UPSA or UPSB is connected respectively the drive coil of A.C. contactor KC and the input of one group normally-closed contact with zero line, and this group normally-closed contact output of described A.C. contactor KC is equipment power supply output; The corresponding input that is connected one group of normally opened contact that described A.C. contactor KC is corresponding of the phase line of the output of described on line type UPS power supply UPSB or UPSA and zero line, the normally-closed contact that described A.C. contactor KC is same group, the corresponding connection of the output of normally opened contact.
In Fig. 1, AC power is mainly provided by UPSA, UPSB, mainly considers to only have in 2 UPS the situation of a road ups power fault.Because the coil power of A.C. contactor KC meets UPSA, so at UPSA under normal circumstances, A.C. contactor KC is output as the power supply of UPSA; When UPSA fault, ac contactor coil loses power supply, and A.C. contactor automatically switches to UPSB input, by UPSB, provides AC220V power supply.When UPSB fault, by UPSA, provide power supply to export.
Embodiment 3
Referring to Fig. 2, the redundancy AC power automatic switching method of the present embodiment, in mains-supplied circuit, connect two-way on line type UPS power supply and realize redundant power supply, by A.C. contactor, automatically switch and export the common source of a road redundancy, assurance provides non-stop run power supply to power supply unit, adopt two on line type UPS power supply UPSA and UPSB, its input connects civil power by air switch respectively, described on line type UPS power supply UPSA or phase line and the zero line of UPSB output be connected respectively the input of the drive coil of A.C. contactor KC1 and A.C. contactor KC3 and one group of normally opened contact of A.C. contactor KC3, this group normally opened contact output of described A.C. contactor KC3 is equipment power supply output, the phase line of the output of described on line type UPS power supply UPSB or UPSA is connected the input of the drive coil of A.C. contactor KC2 and one group of normally opened contact of A.C. contactor KC2 with zero line, the normally opened contact output of a group that described A.C. contactor KC2 is corresponding is connected respectively one group of normally-closed contact of A.C. contactor KC3, one group of normally-closed contact input of described A.C. contactor KC1 connects respectively phase line and the zero line of civil power, one group of normally-closed contact input that A.C. contactor KC1 is corresponding connects respectively the input of the one group of normally-closed contact that flows contactor 2, and the normally opened contact that described A.C. contactor KC2, A.C. contactor KC3 are same group, the output of normally-closed contact is corresponding connects.In figure, k0, k1, k2 are air switch.
In Fig. 2, the Redundant backup of 2 road AC220V is provided, A.C. contactor is selected automatic switching function.Outside input power has UPSA, UPSB, outside input AC220V (external power).Mainly consider 2 kinds of situations: 1) only have a road ups power fault; 2) two road ups power simultaneous faultss.
Its operation principle is as follows:
1, at UPSA under normal circumstances, no matter how to switch on A.C. contactor KC1, KC2, the coil of A.C. contactor KC3 is powered by UPSA, so power supply is output as the power supply of UPSA; 2, when UPSA fault, A.C. contactor KC3 out-put supply depends on the output of A.C. contactor KC2: when UPSB is normal, A.C. contactor KC2 is output as the power supply of UPSB; 3, when UPSB is abnormal, A.C. contactor KC2 out-put supply is the output of A.C. contactor KC1, by 1, know, if UPSA is normal, no matter A.C. contactor KC1 output, A.C. contactor KC3 is powered by UPSA, when UPSA, the equal fault of UPSB, A.C. contactor KC1 is output as external power, and whole power unit is powered by external power.
Take the reason of 3 A.C. contactors to be: avoid ups power when A.C. contactor switches, the input and output of UPS are short circuit in short-term, cause ups power input, output short circuit to report to the police.
Claims (4)
1. a redundancy AC power automatic switching method, in mains-supplied circuit, connect a road on line type UPS power supply and realize redundant power supply, it is characterized in that: when municipal power failure, by A.C. contactor, realize and utilize the state of on line type UPS Power supply to switch, the phase line of described civil power is connected respectively the drive coil of A.C. contactor and the input of one group normally opened contact with zero line, and this group normally opened contact output of described A.C. contactor is equipment power supply output; The corresponding input that is connected one group of normally-closed contact that described A.C. contactor is corresponding of the phase line of the output of described on line type UPS power supply and zero line, the normally-closed contact that described A.C. contactor is same group, the corresponding connection of the output of normally opened contact.
2. interchange redundant power automatic switching method according to claim 1, is characterized in that: described A.C. contactor is accessed by air switch in described mains electricity input end; Described mains electricity input end connects the input of online ups power by air switch.
3. a redundancy AC power automatic switching method, in mains-supplied circuit, connect two-way on line type UPS power supply and realize redundant power supply, by A.C. contactor, automatically switch and export the common source of a road redundancy, assurance provides non-stop run power supply to power supply unit, it is characterized in that: adopt two on line type UPS power supply UPSA and UPSB, its input connects civil power by air switch respectively, the phase line of the output of described on line type UPS power supply UPSA or UPSB is connected respectively the drive coil of A.C. contactor and the input of one group normally-closed contact with zero line, this group normally-closed contact output of described A.C. contactor is equipment power supply output, the corresponding input that is connected one group of normally opened contact that described A.C. contactor is corresponding of the phase line of the output of described on line type UPS power supply UPSB or UPSA and zero line, the normally-closed contact that described A.C. contactor is same group, the corresponding connection of the output of normally opened contact.
4. a redundancy AC power automatic switching method, in mains-supplied circuit, connect two-way on line type UPS power supply and realize redundant power supply, by A.C. contactor, automatically switch and export the common source of a road redundancy, assurance provides non-stop run power supply to power supply unit, it is characterized in that: adopt two on line type UPS power supply UPSA and UPSB, its input connects civil power by air switch respectively, described on line type UPS power supply UPSA or phase line and the zero line of UPSB output be connected respectively the input of the drive coil of A.C. contactor KC1 and A.C. contactor KC3 and one group of normally opened contact of A.C. contactor KC3, this group normally opened contact output of described A.C. contactor KC3 is equipment power supply output, the phase line of the output of described on line type UPS power supply UPSB or UPSA is connected the input of the drive coil of A.C. contactor KC2 and one group of normally opened contact of A.C. contactor KC2 with zero line, the normally opened contact output of a group that described A.C. contactor KC2 is corresponding is connected respectively one group of normally-closed contact of A.C. contactor KC3, one group of normally-closed contact input of described A.C. contactor KC1 connects respectively phase line and the zero line of civil power, one group of normally-closed contact input that A.C. contactor KC1 is corresponding connects respectively the input of one group of normally-closed contact of stream contactor KC2, the normally opened contact that described A.C. contactor KC2, A.C. contactor KC3 are same group, the corresponding connection of output of normally-closed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723213.2A CN103746447B (en) | 2013-12-25 | 2013-12-25 | A kind of redundant AC power automatic switching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723213.2A CN103746447B (en) | 2013-12-25 | 2013-12-25 | A kind of redundant AC power automatic switching method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103746447A true CN103746447A (en) | 2014-04-23 |
| CN103746447B CN103746447B (en) | 2016-08-17 |
Family
ID=50503451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310723213.2A Active CN103746447B (en) | 2013-12-25 | 2013-12-25 | A kind of redundant AC power automatic switching method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103746447B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283263A (en) * | 2014-10-10 | 2015-01-14 | 安徽普为智能科技有限责任公司 | Direct-current charging pile main circuit double-control power supply system and control method thereof |
| CN107404151A (en) * | 2017-08-31 | 2017-11-28 | 郑州云海信息技术有限公司 | A kind of distribution system for being applied to three casees cluster container data centers |
| CN108429255A (en) * | 2018-03-21 | 2018-08-21 | 南京钢铁股份有限公司 | PLC system is for electric installation |
| CN109256852A (en) * | 2018-10-29 | 2019-01-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of instrument redundant power automatic switching control equipment and its application method |
| CN109274173A (en) * | 2018-10-17 | 2019-01-25 | 宁夏晟晏实业集团能源循环经济有限公司 | A kind of dual redundant power supply system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3678069B2 (en) * | 1999-08-31 | 2005-08-03 | 富士電機システムズ株式会社 | Uninterruptible power supply bypass circuit |
| CN201528221U (en) * | 2009-09-10 | 2010-07-14 | 安徽方兴科技股份有限公司 | Three-path power automatic-switching circuit for improving service life of EPS system |
| CN202004530U (en) * | 2011-05-09 | 2011-10-05 | 南京亚派科技实业有限公司 | Electromechanical integrated double-power supply automatic transfer switch |
-
2013
- 2013-12-25 CN CN201310723213.2A patent/CN103746447B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3678069B2 (en) * | 1999-08-31 | 2005-08-03 | 富士電機システムズ株式会社 | Uninterruptible power supply bypass circuit |
| CN201528221U (en) * | 2009-09-10 | 2010-07-14 | 安徽方兴科技股份有限公司 | Three-path power automatic-switching circuit for improving service life of EPS system |
| CN202004530U (en) * | 2011-05-09 | 2011-10-05 | 南京亚派科技实业有限公司 | Electromechanical integrated double-power supply automatic transfer switch |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283263A (en) * | 2014-10-10 | 2015-01-14 | 安徽普为智能科技有限责任公司 | Direct-current charging pile main circuit double-control power supply system and control method thereof |
| CN107404151A (en) * | 2017-08-31 | 2017-11-28 | 郑州云海信息技术有限公司 | A kind of distribution system for being applied to three casees cluster container data centers |
| CN107404151B (en) * | 2017-08-31 | 2023-04-18 | 郑州云海信息技术有限公司 | Power distribution system suitable for three-box cluster container data center |
| CN108429255A (en) * | 2018-03-21 | 2018-08-21 | 南京钢铁股份有限公司 | PLC system is for electric installation |
| CN109274173A (en) * | 2018-10-17 | 2019-01-25 | 宁夏晟晏实业集团能源循环经济有限公司 | A kind of dual redundant power supply system |
| CN109256852A (en) * | 2018-10-29 | 2019-01-22 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of instrument redundant power automatic switching control equipment and its application method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103746447B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103746447B (en) | A kind of redundant AC power automatic switching method | |
| CN205301943U (en) | Star control system is turn -offed and seals in torque of motor safety | |
| CN103595037B (en) | Three-phase alternating current phase sequence error correction device | |
| CN201383702Y (en) | Intelligent quick switching device | |
| CN207652128U (en) | A kind of dual power supply uninterruptible power system | |
| CN105790432A (en) | Multi-redundancy DCS power supply device having alarm function | |
| CN105471084A (en) | Backup direct-current power supply starting controller | |
| CN202798126U (en) | Automatic switching system for uninterrupted power supply of PLC (programmable logic controller) | |
| CN104638633B (en) | Composite members intelligent high-power contacts device without electric arc dc bus | |
| CN203722328U (en) | Apparatus capable of automatically switch power frequency electric supply in case of UPS own faults | |
| CN204271746U (en) | Automatic switching device of standby power supply | |
| CN103887873A (en) | Power supply standby device for transformer substation achieved based on PLC | |
| CN104393667A (en) | Portable power supply switching device | |
| CN204835696U (en) | Switching of power device based on DCS | |
| CN204794329U (en) | Single -phase electric dual supply automatic switching control equipment | |
| CN203301227U (en) | Uninterrupted power supply (UPS) automatic switching device | |
| CN208532036U (en) | A kind of zero-bit monitoring system of bridge crane | |
| CN203398870U (en) | Power supply intelligent monitoring rapid switching apparatus | |
| CN205666677U (en) | Single electrical power unit's dual -path electricity supply ware | |
| CN2938531Y (en) | Double-power supply switch over device | |
| CN205068019U (en) | Vacuum circuit breaker's dual backup controlling means | |
| CN203813507U (en) | PLC-based power supply emergency switching device for transformer station | |
| CN201075733Y (en) | Safety power supply unit | |
| CN2849784Y (en) | Fast stop loop connecting structure for control power of program controller | |
| CN2805182Y (en) | Double power source switchover device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |