CN202395514U - Dual-power switching device - Google Patents
Dual-power switching device Download PDFInfo
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- CN202395514U CN202395514U CN2011204692836U CN201120469283U CN202395514U CN 202395514 U CN202395514 U CN 202395514U CN 2011204692836 U CN2011204692836 U CN 2011204692836U CN 201120469283 U CN201120469283 U CN 201120469283U CN 202395514 U CN202395514 U CN 202395514U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000009977 dual effect Effects 0.000 claims abstract 10
- 238000012546 transfer Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 claims 9
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
一种双电源转换装置，主电源控制电路中第一接触器主触点置于主电源输出线与负载电网之间，并在主电源与主触点间的输出线上分别连接中间继电器线圈回路；第一接触器线圈、中间继电器常开触点、第二接触器常闭触点串联连接回路；指示灯和第一接触器常开触点串联连接回路。备用电源控制电路中第二接触器主触点置于备用电源输出线与负载电网之间，并在备用电源与主触点间的输出线上分别连接第二接触器线圈、第一接触器常闭触点、中间继电器常闭触点串联连接回路；指示灯和第二接触器常开触点串联连接回路。本实用新型结构简单，安全可靠，操作方便，不会因误操作而导致事故，如遇电路故障，能够快速检测出故障原因，大大缩短了维护修理的时间行。
A dual power conversion device, the main contact of the first contactor in the main power control circuit is placed between the output line of the main power supply and the load grid, and the output lines between the main power supply and the main contacts are respectively connected to the intermediate relay coil circuit ; The coil of the first contactor, the normally open contact of the intermediate relay, and the normally closed contact of the second contactor are connected in series; the indicator light and the normally open contact of the first contactor are connected in series. In the backup power supply control circuit, the main contact of the second contactor is placed between the output line of the backup power supply and the load grid, and the output line between the backup power supply and the main contact is respectively connected to the coil of the second contactor and the normal contactor of the first contactor. The closed contact and the normally closed contact of the intermediate relay are connected in series; the indicator light and the normally open contact of the second contactor are connected in series. The utility model has the advantages of simple structure, safety and reliability, and convenient operation, and will not cause accidents due to misoperation. In case of circuit failure, the cause of the failure can be quickly detected, and the time for maintenance and repair is greatly shortened.
Description
Technical field
The utility model relates to the conversion equipment that is used between three-phase alternating-current supply, especially double-power supply switching device.
Background technology
Along with the develop rapidly of Chinese national economy, earth-shaking variation has all taken place in social all trades and professions.Need from safety in production and quantity-produced, all there have been very high requirement in many industries and department to power supply quality.The fire fighting monitoring of skyscraper, the illumination of hospital operating room, airdrome lighting, important production line or the like will bring immeasurable loss if having a power failure midway, and in this case, it is considerable that a stand-by power supply is arranged.When mains power failure, can switch to stand-by power supply and use.
Yet duplicate supply controller of the prior art but has a lot of places unsatisfactory, in practical application, usually mains power failure can occur, the situation that stand-by power supply but can not drop into.Even if keep in repair and change the time that the duplicate supply controller also often need interrupt the power supply several hrs at once, bring very big inconvenience to the user, and can not allow especially at some special occasions.
Summary of the invention
The utility model technical issues that need to address are to overcome defective in the prior art; Provide a kind of simple in structure, performance is safe and reliable, with low cost, be easy to processing or change, can not influence the duplicate supply control transformation device that stand-by power supply is supplied power because of mains power failure.
The utility model has adopted following technical proposal to solve its technical problem: a kind of double-power supply switching device; Comprise three-phase alternating current main power source output line and three-phase alternating current stand-by power supply output line; Separately phase line, zero line is docked with corresponding phase line, zero line on the load electrical network in main power source output line and the stand-by power supply output line, it is characterized in that:
Be equipped with the main power source control circuit on the main power source output line, be equipped with the stand-by power supply control circuit on the stand-by power supply output line,
Described main power source control circuit comprises first A.C. contactor and auxiliary relay; Three utmost point main contactss of this first A.C. contactor place on the main power source output line between main power source and the load electrical network, on the main power source output line between main power source and three utmost point main contactss, are connected respectively
An auxiliary relay coil working loop;
A loop that is connected in series by first ac contactor coil, auxiliary relay normally opened contact, the second A.C. contactor normally-closed contact;
And loop that is connected in series by the indicator light and the first A.C. contactor normally opened contact;
Described stand-by power supply control circuit comprises second A.C. contactor; Three utmost point main contactss of this second A.C. contactor place on the stand-by power supply output line between stand-by power supply and the load electrical network, on the stand-by power supply output line between stand-by power supply and three utmost point main contactss, are connected respectively
A loop that is connected in series by second ac contactor coil, the first A.C. contactor normally-closed contact, auxiliary relay normally-closed contact;
And loop that is connected in series by the indicator light and the second A.C. contactor normally opened contact.
The utility model respectively adds an A.C. contactor in main power source output line and stand-by power supply output line circuit; And it is ingenious and the position of main contacts, normally closed, normally opened contact rationally is set; Make it to form respectively main power source control circuit and stand-by power supply control circuit, the on-off switch of security control main power source and stand-by power supply output line.On main power source output line and stand-by power supply output line, circuit breaker is set, to increase the reliability of outlet line, the fuse of having connected respectively in each control circuit is so that promote the fail safe of circuit more.
The beneficial effect of the utility model:
1, the utility model also has the open-phase protection effect except having conventional decompression, under-voltage, overcurrent and short-circuit protection.
2, the utility model circuit structure is simple, and is safe and reliable, easy to operate, can not cause power supply switching accident because of misoperation.
3, the used components and parts of the utility model circuit are common components and parts, change simply, and fault detect is convenient, produces if any fault, and the reason that can fast detecting be out of order has shortened time of maintenance and repair circuit greatly.
4, there are not capacitor and other to be subject to the non-linear element that high order harmonic component is disturbed in the utility model circuit, can stable operation in the electric power system of high order harmonic component serious interference.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams.
Each literal or numerical chracter among its figure are expressed as respectively:
1-three-phase alternating current main power source output line (wherein: A-first phase line, B-second phase line, C-third phase line, N-zero line);
2-main power source control circuit;
3-three-phase alternating current stand-by power supply output line (wherein: A '-first phase line, B '-second phase line, C '-third phase line, N-zero line);
4-stand-by power supply control circuit;
5-load electrical network (wherein: L1, L2, L3-phase line; The N-zero line);
KM01-first ac contactor coil; Three utmost point main contactss of KM01-0-first A.C. contactor; The KM01-1-first A.C. contactor normally opened contact; The KM01-2-first A.C. contactor normally-closed contact;
KM02-second ac contactor coil; Three utmost point main contactss of KM02-0-second A.C. contactor; The KM02-1-second A.C. contactor normally-closed contact; The KM02-2-second A.C. contactor normally opened contact;
KA01-auxiliary relay coil; KA01-1-auxiliary relay normally opened contact; KA01-2-auxiliary relay normally-closed contact;
HL01～HL04-indicator light;
FU01～FU06-fuse;
SA01～SA02-change over switch;
QF01～QF02-lead-in circuit breaker.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is done further to describe.
With reference to accompanying drawing, the utility model comprises three-phase alternating current main power source output line 1 and three-phase alternating-current supply output line 3.The first phase line A in the main power source output line 1, the second phase line B, third phase line C and zero line N correspondence are docked with phase line L1, L2, L3 and the zero line N on the load electrical network 5; The first phase line A ' in the stand-by power supply output line 3, the second phase line B ', third phase line C ' and zero line N also correspondence are docked with phase line L1, L2, L3 and the zero line N on the load electrical network 5.
The utility model is equipped with main power source control circuit 2 on main power source output line 1, be equipped with stand-by power supply control circuit 4 on the stand-by power supply output line 3.
The described main power source control circuit 2 of the utility model comprises first A.C. contactor and auxiliary relay.Three utmost point main contacts KM01-0 of this first A.C. contactor place on the main power source output line 1 between main power source and the load electrical network 5.
The described main power source control circuit 2 of the utility model is connected the work loop of an auxiliary relay coil KA01 on the main power source output line 1 between main power source and three utmost point main contacts KM01-0.Particularly, this work loop is connected on the first phase line A and third phase C line of main power source output line 1.Auxiliary relay coil KA01 two ends in this work loop also be connected in series respectively two fuse F U02, FU03.
The described main power source control circuit 2 of the utility model also is connected a loop that is connected in series by the first ac contactor coil KM01, auxiliary relay normally opened contact KA01-1, the second A.C. contactor normally-closed contact KM02-1 on the main power source output line 1 between main power source and three utmost point main contacts KM01-0.Particularly, this loop is connected on the second phase line B and zero line N of main power source output line 1.An end that connects the second phase line B in this loop also be connected in series respectively a fuse F U04 and a change over switch SA01.
The described main power source control circuit 2 of the utility model also is connected a loop that is connected in series by the indicator light HL02 and the first A.C. contactor normally opened contact KM01-1 on the main power source output line 1 between main power source and three utmost point main contacts KM01-0, form main power source working condition indication loop.Particularly, this loop is connected on the second phase line B and zero line N of main power source output line 1.When being connected in series fuse F U04 and change over switch SA01 in the loop at first ac contactor coil KM01 place; The be connected in series end in loop of the indicator light HL02 and the first A.C. contactor normally opened contact KM01-1 can be connected on the node between fuse F U04 and the change over switch SA01, and the other end connects zero line N.
The described stand-by power supply control circuit 4 of the utility model comprises second A.C. contactor, and three utmost point main contacts KM02-0 of this second A.C. contactor place on the stand-by power supply output line 3 between stand-by power supply and the load electrical network 5.
The described stand-by power supply control circuit 4 of the utility model is connected a loop that is connected in series by the second ac contactor coil KM02, the first A.C. contactor normally-closed contact KM01-2, auxiliary relay normally-closed contact KA01-2 on the stand-by power supply output line 3 between stand-by power supply and three utmost point main contacts KM02-0.Particularly, this loop is connected on the second phase line B ' and zero line N of stand-by power supply output line 3.An end that connects the second phase line B ' in this loop also be connected in series respectively a fuse F U06 and a change over switch SA02.
The described stand-by power supply control circuit 4 of the utility model is connected a loop that is connected in series by the indicator light HL04 and the second A.C. contactor normally opened contact KM02-2 on the stand-by power supply output line 3 between stand-by power supply and three utmost point main contacts KM02-0, form stand-by power supply working condition indication loop.Particularly, this loop is connected on the second phase line B ' and zero line N of stand-by power supply output line 3.When being connected in series fuse F U06 and change over switch SA02 in the loop at second ac contactor coil KM02 place; The be connected in series end in loop of the indicator light HL04 and the second A.C. contactor normally opened contact KM02-2 is connected on the node between fuse HL04 and the change over switch SA02, and the other end connects zero line N.
The utility model also is equipped with lead-in circuit breaker QF01 on described three-phase alternating current main power source output line 1, when maintenance, can play the power-off protection effect.In addition, plug into after fuse F U01 and indicator light HL01 are connected in series between the first phase line A and zero line N on the main power source output line 1, form main power source state indication loop.
On described three-phase alternating current stand-by power supply output line 3, also be equipped with lead-in circuit breaker QF02, when maintenance, can play the power-off protection effect.In addition, plug into after fuse F U05 and indicator light HL03 are connected in series between the third phase line C ' and zero line N on the stand-by power supply output line 3, form stand-by power supply state indication loop.
Below basic status and principle during the work of summary the utility model:
During the utility model operate as normal, lead-in circuit breaker QF01 on the three-phase alternating current main power source output line 1 and the change over switch SA01 in the main power source control circuit 2 are in closure state; Lead-in circuit breaker QF02 on the three-phase alternating current stand-by power supply output line 3 and the change over switch SA02 in the stand-by power supply control circuit 4 also are in closure state.
When main power source normally uses; On the three-phase alternating current main power source output line 1; Indicator light HL01 lights, and expression main power source output line 1 has electricity, auxiliary relay coil KA01 energising; Its normally opened contact KA01-1 in main power source control circuit 2 is closed, and the normally-closed contact KA01-2 in stand-by power supply control circuit 4 opens; Simultaneously three-phase alternating current stand-by power supply output line 3 also; Indicator light HL03 lights, and expression stand-by power supply output line 3 has electricity, but owing to the auxiliary relay normally-closed contact KA01-2 in the second ac contactor coil KM02 loop is opened; So the second ac contactor coil KM02 must not; Normally-closed contact KM02-1 in its main power source control circuit 2 still remains closed normality, first ac contactor coil KM01 loop energising this moment, and this contactor coil KM01 gets electric back adhesive three utmost point main contacts KM01-0; Thereby cause main power source output line 1 to connect load electrical network 5, main power source is to 5 power supplies of load electrical network.This moment, the first A.C. contactor normally opened contact KM01-1 was closed in addition, and indicator light HL02 lights, and the operating state that the expression main power source is inserted is normal.
When the main power source abnormal power-down; Three-phase alternating current main power source output line 1 dead electricity; The HL01 indicator light extinguishes, and its normally opened contact KA01-1 and normally-closed contact KA01-2 recover often to open and normally closed normality after the auxiliary relay coil KA01 dead electricity in main power source control circuit 2, at this moment the first ac contactor coil KM01 loop dead electricity; Make its three utmost points main contacts KM01-0 break off being connected of main power source output line 1 and load electrical network after this contactor coil KM01 dead electricity; Its normally opened contact KM01-1 and normally-closed contact KM01-2 recover often to open and normally closed normality, and the HL02 indicator light extinguishes, and the expression main power source gets into off-state; Simultaneously; The loop energising at the second ac contactor coil KM02 place in stand-by power supply control circuit 4, this contactor coil KM02 gets electric its three utmost points main contacts of back adhesive KM02-0, makes stand-by power supply output line 3 connect load electrical network 5; Thereby cause stand-by power supply to 5 power supplies of load electrical network; Meanwhile, the second A.C. contactor normally opened contact KM02-2 in the stand-by power supply control circuit 4 is closed, and indicator light HL04 lights; The operating state that the expression stand-by power supply is inserted is normal, and so far whole duplicate supply transfer process finishes.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204692836U CN202395514U (en) | 2011-11-23 | 2011-11-23 | Dual-power switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204692836U CN202395514U (en) | 2011-11-23 | 2011-11-23 | Dual-power switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395514U true CN202395514U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204692836U Expired - Fee Related CN202395514U (en) | 2011-11-23 | 2011-11-23 | Dual-power switching device |
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| CN (1) | CN202395514U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701840A (en) * | 2015-03-12 | 2015-06-10 | 杭州德洛电力设备有限公司 | Intelligent three-power automatic transfer switch |
| CN104953703A (en) * | 2015-07-03 | 2015-09-30 | 国家电网公司 | Double-power-supply control box with anti-misoperation function |
| CN105958633A (en) * | 2016-06-22 | 2016-09-21 | 中航太克（厦门）电力技术股份有限公司 | Two-way power supply automatic switching power supply circuit |
| CN108313234A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | Open type hydraulic system watertight controlling device for doors |
| CN106451689B (en) * | 2016-12-15 | 2018-07-27 | 南通华夏飞机工程技术股份有限公司 | A kind of power supply circuit of DC power supply vehicle |
| CN110174586A (en) * | 2019-07-08 | 2019-08-27 | 北京航天常兴科技发展股份有限公司 | One kind supplies power with double circuit system and its anticreep false alarm monitoring device, monitoring method |
| CN110266099A (en) * | 2019-06-04 | 2019-09-20 | 华电电力科学研究院有限公司 | A kind of three phase mains switching device and its working method |
| US12334775B2 (en) | 2020-10-28 | 2025-06-17 | Huawei Digital Power Technologies Co., Ltd. | Power supply system and control method |
-
2011
- 2011-11-23 CN CN2011204692836U patent/CN202395514U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701840A (en) * | 2015-03-12 | 2015-06-10 | 杭州德洛电力设备有限公司 | Intelligent three-power automatic transfer switch |
| CN104953703A (en) * | 2015-07-03 | 2015-09-30 | 国家电网公司 | Double-power-supply control box with anti-misoperation function |
| CN105958633A (en) * | 2016-06-22 | 2016-09-21 | 中航太克（厦门）电力技术股份有限公司 | Two-way power supply automatic switching power supply circuit |
| CN106451689B (en) * | 2016-12-15 | 2018-07-27 | 南通华夏飞机工程技术股份有限公司 | A kind of power supply circuit of DC power supply vehicle |
| CN108313234A (en) * | 2018-03-21 | 2018-07-24 | 无锡德林防务装备股份有限公司 | Open type hydraulic system watertight controlling device for doors |
| CN110266099A (en) * | 2019-06-04 | 2019-09-20 | 华电电力科学研究院有限公司 | A kind of three phase mains switching device and its working method |
| CN110266099B (en) * | 2019-06-04 | 2023-11-14 | 华电电力科学研究院有限公司 | Three-phase power supply switching device and working method thereof |
| CN110174586A (en) * | 2019-07-08 | 2019-08-27 | 北京航天常兴科技发展股份有限公司 | One kind supplies power with double circuit system and its anticreep false alarm monitoring device, monitoring method |
| US12334775B2 (en) | 2020-10-28 | 2025-06-17 | Huawei Digital Power Technologies Co., Ltd. | Power supply system and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20191123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |