CN104201765A - One-use one-spare power type emergency power source - Google Patents
One-use one-spare power type emergency power source Download PDFInfo
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- CN104201765A CN104201765A CN201410432038.6A CN201410432038A CN104201765A CN 104201765 A CN104201765 A CN 104201765A CN 201410432038 A CN201410432038 A CN 201410432038A CN 104201765 A CN104201765 A CN 104201765A
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- power supply
- frequency power
- contactor
- controller
- variable frequency
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention belongs to the field of emergency power sources, and particularly discloses a one-use one-spare power type emergency power source, which is mainly composed of a variable-frequency power source, a controller, KM1-KM4 AC (Alternating Current) contactors and a RD fuse. The DC (Direct Current) input end of the variable-frequency power source is connected with a 500 V DC bus through the RD fuse; the output end of the variable-frequency power soruce is respectively connected with the switching contactors KM3 and KM4; an input end of a mains supply is connected with switching contactors KM1 and KM2; the switching contactors KM1-KM4 perform the control command of the controller to act. Through research on the one-use one-spare motor emergency mode of the emergency power source, the existing emergency mode wire connection is relatively complex, and the devices are relatively in a large number; after the improvement, the wire connection becomes easier as electricity is put through directly from a 500 V DC bus, the volume of a cabinet is reduced, the devices are relatively in a small number, accordingly the cost can be reduced, and the enterprise competitiveness can be enhanced.
Description
Technical field
The invention belongs to emergency power supply field, specifically a kind of the using and the reserved power category emergency power supply.
Background technology
In industries such as chemical industry, metallurgy, some stage load maintains the operation of recirculated cooling water or oil system as circulating air compressor, if mains supply system generation power failure, cause recirculated cooling water or oil system out of service, to cause production process to destroy, cause equipment and personal injury, bring unnecessary economic loss.So, for a stage load, conventionally need power category emergency power supply to ensure the power supply continuity of a stage load and important load, prevent that normal power source from interrupting the destruction to production process.
Common power category emergency power supply emergency mode operation principle refers to shown in Fig. 1, and common power category emergency power supply is comprised of critical components such as control unit, variable frequency power supply, switching contactor KM1-KM4, bypass maintenance switch QF1-QF4, battery pack, charger and ACI1, ACI2 current sensors.
The direct-flow input end of variable frequency power supply is connected with battery pack, variable frequency power supply output is received respectively switching contactor KM3, KM4, civil power input meets switching contactor KM1, KM2, switching contactor output is connected in series respectively ACI1, ACI2 current sensor, and ACI1, ACI2 current sensor are connected with controller.The communication and control of controller is connected with contactor with variable frequency power supply respectively.
When civil power is normal, controller is according to active and standby equipment service requirement, control contactor KM1, KM2 adhesive respectively, KM3, KM4 disconnect, realize main motor or standby motor operational mode, controller is exported ACI1, ACI2 to two-way and is carried out current detecting, and this detects the foundation as the active and standby motor operation of control system identification.In addition, civil power is powered to charger, charger accumulators group charging energy-storing.
During municipal power failure, controller is controlled KM1, KM2 contactor disconnects, if main pump moves before fault is judged in identification, controls KM3 contactor closed; If the front standby pump operation of fault is judged in identification, control KM4 contactor closed, restart variable frequency power supply, realize motor emergency operating pattern.
Realize the correct emergent switching of active and standby motor, the most important thing is the logic judgement when controlling unit is carried out the identification of active and standby motor operation and had a power failure.Although control system is carried out main pump upper end A CI1, standby pump upper end A CI2 current detecting, as the foundation of the active and standby pump operation of control system identification, if do not design correct logical relation, the mistake of generation being run counter to field requirement is switched.
In addition, although that existing emergency power supply the using and the reserved motor emergency mode is also moved is fine, rack wiring is relatively complicated, has increased employee's task, and components and parts are also more, virtually also make cost increase many.
Summary of the invention
For the technical problem existing in prior art, the invention provides a kind of the using and the reserved power category emergency power supply.
To achieve these goals, the technical solution adopted in the present invention is: a kind of the using and the reserved power category emergency power supply, is mainly comprised of variable frequency power supply, controller, KM1-KM4 A.C. contactor, RD fuse;
The direct-flow input end of variable frequency power supply is connected with 500V DC bus by RD fuse, variable frequency power supply output is received respectively switching contactor KM3, KM4, civil power input meets switching contactor KM1, KM2, and switching contactor KM1-KM4 implementation controller control command is sent action;
When civil power is normal, the requirement that controller moves according to active and standby power-supply device, control contactor KM1 or KM2 adhesive respectively, now KM3, KM4 are in off-state, and now equipment is in main electricity or standby electric operating state;
During municipal power failure, controller is controlled KM1, KM2 contactor disconnects, and starts variable frequency power supply simultaneously, closed KM3 or KM4, and KM3 and KM4 are interlocking state, 500V direct current, by RD fuse, through variable frequency power supply output AC, provides AC power through KM3 or KM4 to motor; When motor M 1 breaks down, by DCS, send signal, via controller sends instruction, controls KM3 and disconnects, closed KM4, starter motor M2, otherwise, when motor M 2 breaks down, by DCS, send signal, via controller sends instruction, controls KM4 and disconnects, closed KM3, starter motor M1;
When two motors break down simultaneously, DCS sends signal, and via controller sends instruction, controls KM1-KM4 and all disconnects, and now can carry out electrical machmary maintenance.
The using and the reserved power category emergency power supply of the present invention, compared with prior art, its beneficial effect shows:
1), by research emergency power supply the using and the reserved motor emergency mode, existing emergency mode wiring is relatively complicated, components and parts are also relatively many, after having improved, in wiring, be easier to, directly power taking from 500V DC bus, reduce rack volume, components and parts are relatively less, and then can reduce costs, and strengthen enterprise competitiveness.
2), the using and the reserved power category emergency power supply of the present invention, power supply reliability is higher, adopts power supply entering line and the using and the reserved dual fail-safe, control mode more flexibly, can send signal by on-the-spot DCS, control active and standby motor and move flexibly, the application of more realistic production scene.
Accompanying drawing explanation
Fig. 1 is existing common power category emergency power supply emergency mode fundamental diagram.
Fig. 2 is the fundamental diagram of the using and the reserved power category emergency power supply of the present invention.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the present invention is further illustrated below in conjunction with accompanying drawing.
Refer to Fig. 2, a kind of the using and the reserved power category emergency power supply, is mainly comprised of variable frequency power supply, controller, KM1-KM4 A.C. contactor, RD fuse etc.
Variable frequency power supply is the pith of emergency power supply, and it is reverse into the direct current energy of battery AC energy, also drives respectively one main one for motor emergency operating.Controller is a main core control section for motor emergency power supply, mainly carries out the work such as signal sampling, data analysis, logic control and display communication of power-supply system.Switching contactor KM1-KM4 implementation controller control command is sent action, realizes electrical source exchange.
The direct-flow input end of variable frequency power supply is connected with 500V DC bus by RD fuse, variable frequency power supply output is received respectively switching contactor KM3, KM4, civil power input meets switching contactor KM1, KM2, and switching contactor KM1-KM4 implementation controller control command is sent action.
When civil power is normal, the requirement that controller moves according to active and standby power-supply device, control contactor KM1 or KM2 adhesive respectively, now KM3, KM4 are in off-state, and now equipment is in main electricity or standby electric operating state.
During municipal power failure, controller is controlled KM1, KM2 contactor disconnects, and starts variable frequency power supply simultaneously, closed KM3 or KM4, and KM3 and KM4 are interlocking state, 500V direct current, by RD fuse, through variable frequency power supply output AC, provides AC power through KM3 or KM4 to motor; When motor M 1 breaks down, by DCS, send signal, via controller sends instruction, controls KM3 and disconnects, closed KM4, starter motor M2, otherwise, when motor M 2 breaks down, by DCS, send signal, via controller sends instruction, controls KM4 and disconnects, closed KM3, starter motor M1.
When two motors break down simultaneously, DCS sends signal, and via controller sends instruction, controls KM1-KM4 and all disconnects, and now can carry out electrical machmary maintenance.
Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (1)
1. a using and the reserved power category emergency power supply, is characterized in that: mainly variable frequency power supply, controller, KM1-KM4 A.C. contactor, RD fuse, consist of;
The direct-flow input end of variable frequency power supply is connected with 500V DC bus by RD fuse, variable frequency power supply output is received respectively switching contactor KM3, KM4, civil power input meets switching contactor KM1, KM2, and switching contactor KM1-KM4 implementation controller control command is sent action;
When civil power is normal, the requirement that controller moves according to active and standby power-supply device, control contactor KM1 or KM2 adhesive respectively, now KM3, KM4 are in off-state, and now equipment is in main electricity or standby electric operating state;
During municipal power failure, controller is controlled KM1, KM2 contactor disconnects, and starts variable frequency power supply simultaneously, closed KM3 or KM4, and KM3 and KM4 are interlocking state, 500V direct current, by RD fuse, through variable frequency power supply output AC, provides AC power through KM3 or KM4 to motor; When motor M 1 breaks down, by DCS, send signal, via controller sends instruction, controls KM3 and disconnects, closed KM4, starter motor M2, otherwise, when motor M 2 breaks down, by DCS, send signal, via controller sends instruction, controls KM4 and disconnects, closed KM3, starter motor M1;
When two motors break down simultaneously, DCS sends signal, and via controller sends instruction, controls KM1-KM4 and all disconnects, and now can carry out electrical machmary maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432038.6A CN104201765A (en) | 2014-08-28 | 2014-08-28 | One-use one-spare power type emergency power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432038.6A CN104201765A (en) | 2014-08-28 | 2014-08-28 | One-use one-spare power type emergency power source |
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| Publication Number | Publication Date |
|---|---|
| CN104201765A true CN104201765A (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410432038.6A Pending CN104201765A (en) | 2014-08-28 | 2014-08-28 | One-use one-spare power type emergency power source |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967364A (en) * | 2015-07-13 | 2015-10-07 | 中国恩菲工程技术有限公司 | Motor control device and method |
| CN110311466A (en) * | 2019-07-16 | 2019-10-08 | 武汉腾江电气制造有限公司 | Railway communication base station double power-supply system, control method, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202798108U (en) * | 2012-09-20 | 2013-03-13 | 合肥联信电源有限公司 | Emergency power supply applied to main motor and stand-by motor |
| CN203491772U (en) * | 2013-09-11 | 2014-03-19 | 合肥联信电源有限公司 | Power type emergency power supply with automatic conversion function of main motor and spare motor |
| CN103715759A (en) * | 2013-12-25 | 2014-04-09 | 施耐德万高（天津）电气设备有限公司 | Power selection and interlocking device of automatic change-over switch appliance used in 690V IT system |
| CN203691050U (en) * | 2014-01-16 | 2014-07-02 | 国家电网公司 | Direct current power source circuit of inverting power source |
-
2014
- 2014-08-28 CN CN201410432038.6A patent/CN104201765A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202798108U (en) * | 2012-09-20 | 2013-03-13 | 合肥联信电源有限公司 | Emergency power supply applied to main motor and stand-by motor |
| CN203491772U (en) * | 2013-09-11 | 2014-03-19 | 合肥联信电源有限公司 | Power type emergency power supply with automatic conversion function of main motor and spare motor |
| CN103715759A (en) * | 2013-12-25 | 2014-04-09 | 施耐德万高（天津）电气设备有限公司 | Power selection and interlocking device of automatic change-over switch appliance used in 690V IT system |
| CN203691050U (en) * | 2014-01-16 | 2014-07-02 | 国家电网公司 | Direct current power source circuit of inverting power source |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967364A (en) * | 2015-07-13 | 2015-10-07 | 中国恩菲工程技术有限公司 | Motor control device and method |
| CN110311466A (en) * | 2019-07-16 | 2019-10-08 | 武汉腾江电气制造有限公司 | Railway communication base station double power-supply system, control method, equipment and storage medium |
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Application publication date: 20141210 |
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| RJ01 | Rejection of invention patent application after publication |