CN101630860A - Power-integration power-supply system and method for discharging storage batteries - Google Patents
Power-integration power-supply system and method for discharging storage batteries Download PDFInfo
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- CN101630860A CN101630860A CN200910109600A CN200910109600A CN101630860A CN 101630860 A CN101630860 A CN 101630860A CN 200910109600 A CN200910109600 A CN 200910109600A CN 200910109600 A CN200910109600 A CN 200910109600A CN 101630860 A CN101630860 A CN 101630860A
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Abstract
The invention discloses a power-integration power-supply system comprising an AC/DC rectifier module, a storage battery pack, a DC/AC inversion module, a monitoring system and a feeding circuit. A power network output interface is sequentially coupled with the AC/DC rectifier module, the storage battery pack and the DC/AC inversion module; the monitoring system is used for monitoring the work of all parts; the feeding circuit controllable to switch on or off is arranged between the output end of the DC/AC inversion module and the power network output interface; and when the storage battery pack needs discharging, the monitoring system closes the output of the AC/DC rectifier module to the storage battery pack, adjusts the amplitude and the phase of the output voltage of the DC/AC inversion module to be identical to a power network voltage, switches on the feeding circuit and adjusts the phase of the output current of the DC/AC inversion module to track the phase of the power network voltage by closed-loop control. The invention also discloses a method for discharging storage batteries in the power-integration power-supply system and a corresponding method for activating the storage batteries and detecting the electronuclear capacity and the essential resistance. The invention which is adopted to maintain the storage batteries in the power-integration power-supply system can achieve the effects of saving energy and protecting environment.
Description
Technical field
The present invention relates to power-integration power-supply system, particularly relate to a kind of power-integration power-supply system and method for discharging storage batteries.
Background technology
At present, power-integration power-supply system has been widely used in fields such as power plant, transformer station, industrial and mining enterprises, electric railway and skyscraper.Fig. 1 is typical power-integration power-supply system, and system comprises the AC/DC rectification module, batteries, DC/DC conversion module, DC/AC inversion module.Typically, line voltage is rectified into 220V or 110V direct voltage by rectification module, provide the energy and to battery charging to electrical load, the DC/DC conversion module is converted to high-voltage dc voltage the direct voltage of 48V, provide the energy to traffic load, the DC/AC inversion module then is converted to direct current the energy that alternating current is used to provide Emergency Light.Storage battery uses a period of time just to need to safeguard as part important in the power-integration power-supply system, discharge and recharge again with activation, and storage battery also needs periodically to examine appearance (checking the battery actual capacity) discharge and internal resistance measurement.Yet present stage activates, examines appearance to storage battery and measures the following three kinds of modes of the general employing of internal resistance and discharge: 1, adopt resistance to discharge as the load of storage battery; 2, adopt the electronic type discharge equipment of energy-dissipating type power electronic element to discharge; 3, adopt special-purpose active feedback device with the electric energy feedback.Preceding two kinds of discharge modes have significant disadvantages, have promptly consumed the electric energy of storage battery in vain, but also can produce the high heat radiation, have disaster hidden-trouble.The third discharge mode is then owing to the instrument that needs special use, thereby cost is higher.
Summary of the invention
The purpose that the present invention will reach is at the deficiencies in the prior art, a kind of power-integration power-supply system is provided, can realizes effective utilization of the discharge energy of batteries, energy savings, can also make its discharge process simplification and not produce high-heating radiation, reach the effect of environmental protection.
The method that the purpose that the present invention will reach simultaneously also is to provide the method for battery discharging in a kind of power-integration power-supply system and realizes online storage battery activation, nuclear appearance and internal resistance measurement accordingly.
For achieving the above object, the present invention is by the following technical solutions:
A kind of power-integration power-supply system, comprise the AC/DC rectification module that is coupled in turn by the electrical network output interface, batteries, DC/AC inversion module and the supervisory control system that is used to monitor each several part work, also comprise the output that is arranged at described DC/AC inversion module feed path to the controlled break-make between the electrical network output interface, when described batteries need be discharged, described supervisory control system is closed the output of described AC/DC rectification module to described batteries, the output voltage amplitude of regulating described DC/AC inversion module is identical with line voltage with phase place, open described feed path then, regulate the phase place of Phase Tracking line voltage of the output current of described DC/AC inversion module again by closed-loop control.
Described DC/AC inversion module can be power converter or electric power UPS.
Preferably also comprise the DC/DC conversion module, described batteries and described DC/DC conversion module are by the switch control connection.
The method of battery discharging in a kind of power-integration power-supply system, described system comprise AC/DC rectification module, batteries and the DC/AC inversion module that is coupled in turn by the electrical network output interface, said method comprising the steps of:
A. close of the output of described AC/DC rectification module to described batteries;
The output voltage amplitude of b. regulating described DC/AC inversion module is identical with line voltage with phase place;
C. the output with described DC/AC inversion module is connected with the electrical network output interface;
D. regulate the phase place of Phase Tracking line voltage of the output current of described DC/AC inversion module by closed-loop control, with to the meritorious energy of electrical network feedback.
Preferably, among the described step a, by the output voltage of described AC/DC rectification module being turned down or directly closed of the output of described AC/DC rectification module to described batteries.
Preferably, in the described steps d, according to the detection of discharging current being controlled described batteries discharge electricity amount.
A kind of method that realizes online storage battery activation in power-integration power-supply system comprises the step of carrying out battery discharging according to the method for aforesaid battery discharging.
A kind of method that realizes that in power-integration power-supply system online storage battery nuclear holds comprises the step of carrying out battery discharging according to the method for aforesaid battery discharging.
A kind of method that realizes online accumulator internal resistance measurement in power-integration power-supply system comprises the step of carrying out battery discharging according to the method for aforesaid battery discharging.
A kind of method for saving energy that realizes in power-integration power-supply system comprises the step of carrying out battery discharging according to the method for aforesaid battery discharging.
Beneficial technical effects of the present invention is:
According to the present invention, when needs discharge to batteries, the charging output of described AC/DC rectification module to batteries is closed in control, the output voltage amplitude of regulating described DC/AC inversion module is identical with line voltage with phase place, open described feed path then, regulate the phase place of Phase Tracking line voltage of the output current of described DC/AC inversion module again by closed-loop control, with to the meritorious energy of electrical network feedback.Thereby the direct current that batteries is emitted is converted to the alternating current that can feed back to electrical network, make the electric energy of storage battery feed back to electrical network by the DC/AC inversion module, simultaneously electrical network is not produced idle pollution, like this, both made discharge energy obtain effective utilization, saved the energy, made again that discharge process becomes simply, safety, do not produce high-heating radiation, therefore not only economy but also environmental protection.Adopt the present invention, power-integration power-supply system can be implemented in the activation of line formula storage battery, online nuclear discharge capacitor and online accumulator internal resistance and measures.
Description of drawings
Fig. 1 is typical power-integration power-supply system structural representation;
Fig. 2 is the power-integration power-supply system structural representation of an embodiment of the present invention;
Fig. 3 is the power-integration power-supply system structural representation of the another kind of embodiment of the present invention;
Fig. 4 is the flow chart of method for discharging storage batteries in the power-integration power-supply system of the present invention.
Feature of the present invention and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
Embodiment
As shown in Figure 2, the power-integration power-supply system of a kind of embodiment comprises AC/DC rectification module, batteries, DC/AC inversion module and supervisory control system (figure does not show), the input of AC/DC rectification module and electrical network output interface are coupled, the input coupled in common of the output of AC/DC rectification module and the both positive and negative polarity of batteries and DC/AC inversion module, the output of DC/AC inversion module is coupled to the Emergency Light load, and batteries and AC/DC rectification module output are by switch S 2 control connection electrical loads.Supervisory control system is coupled to above-mentioned various piece respectively so that its work is monitored.Wherein, electrical network can provide the DC charging electric energy to batteries by the AC/DC rectification module, and the direct current of batteries output can convert alternating current to and offer urgent bright load by the DC/AC inversion module.
According to the present invention, be provided with the feed path at the output of DC/AC inversion module between the electrical network output interface, can decide the break-make of feed path by the open and-shut mode of control switch S1.When batteries need be discharged, supervisory control system is closed the output (stop charging effect) of AC/DC rectification module to batteries, also can close the output (quit work discharge) of batteries according to circumstances to the electrical load that directly utilizes its power supply, and the output voltage amplitude of regulating described DC/AC inversion module is identical with line voltage with phase place, then with switch S 1 closure, make the output of DC/AC inversion module join by feed path and electrical network output interface, open the feed path, regulate the phase place of Phase Tracking line voltage of the output current of DC/AC inversion module again by closed-loop control, so that its output electric energy can feed back to electrical network, to the meritorious energy of electrical network feedback, electrical network is not produced idle pollution simultaneously.Wherein, can be by the output voltage of AC/DC rectification module being turned down or is directly closed of the output of AC/DC rectification module to batteries, at this moment, check diode D oppositely ends, and batteries stops charging.
As shown in Figure 3, the power-integration power-supply system of another kind of embodiment also comprises the DC/DC conversion module, and DC/DC conversion module and batteries and AC/DC rectification module output are by switch S 2 control connections.The DC/DC conversion module is converted to low-voltage dc voltage with high-voltage dc voltage, provides the energy to traffic load.When batteries need be discharged, supervisory control system is cut-off switch S2 according to circumstances, thereby closed the output of batteries to electrical load and DC/DC conversion module.
In certain embodiments, the DC/AC inversion module can adopt power converter.Power converter inside has the DC/DC structure of boosting usually.Equally, the output voltage amplitude of regulating power converter is identical with line voltage with phase place, then with switch S 1 closure, open the feed path, regulate the phase place of Phase Tracking line voltage of the output current of power converter again by closed-loop control, make it to the meritorious energy of electrical network feedback, electrical network is not produced idle pollution simultaneously.
In further embodiments, power converter also can substitute with electric power UPS.
In addition, supervisory control system can be controlled the discharge energy of storage battery by detecting battery discharge current, thereby problem such as can not cause battery discharging to cross to lose.
Power-integration power-supply system of the present invention changes into alternating current with the energy of battery discharging by power converter and feeds back to electrical network, simultaneously electrical network is not produced idle pollution, both made discharge energy obtain effective utilization, saved the energy, make discharge process become simple again, do not produce high-heating radiation, economy is environmental protection again.
On the other hand, the present invention also proposes the method for battery discharging in a kind of power-integration power-supply system, and described system comprises AC/DC rectification module, batteries and the DC/AC inversion module that is coupled in turn by the electrical network output interface.As shown in Figure 4, said method comprising the steps of:
Step S1, close of the output of described AC/DC rectification module to described batteries;
The output voltage amplitude of step S2, the described DC/AC inversion module of adjusting is identical with line voltage with phase place;
Step S3, the output of described DC/AC inversion module is linked to each other with the electrical network output interface;
Step S4, the phase place of Phase Tracking line voltage of regulating the output current of described DC/AC inversion module by closed-loop control are with to the meritorious energy of electrical network feedback.
Among the step S1, can be by the output voltage of described AC/DC rectification module being turned down or is directly closed of the output of described AC/DC rectification module to described batteries.
Among the step S4, can control described batteries discharge electricity amount by detecting discharging current.
The various embodiments of this method all can specifically be implemented with reference to the content of aforementioned system embodiment, repeats no more herein.
Method for discharging storage batteries of the present invention can be used to realize online storage battery activation, online nuclear discharge capacitor and the measurement of online accumulator internal resistance.Should be understood that the battery service method of all uses method for discharging storage batteries of the present invention or power-economizing method all should be protection scope of the present invention and cover.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. power-integration power-supply system, comprise the AC/DC rectification module that is coupled in turn by the electrical network output interface, batteries, DC/AC inversion module and the supervisory control system that is used to monitor each several part work, it is characterized in that, also comprise the output that is arranged at described DC/AC inversion module feed path to the controlled break-make between the electrical network output interface, when described batteries need be discharged, described supervisory control system is closed the output of described AC/DC rectification module to described batteries, the output voltage amplitude of regulating described DC/AC inversion module is identical with line voltage with phase place, open described feed path then, regulate the phase place of Phase Tracking line voltage of the output current of described DC/AC inversion module again by closed-loop control.
2. power-integration power-supply system as claimed in claim 1 is characterized in that, described DC/AC inversion module is power converter or electric power UPS.
3. power-integration power-supply system as claimed in claim 1 or 2 is characterized in that, also comprises the DC/DC conversion module, and described batteries and described DC/DC conversion module are by the switch control connection.
4. the method for battery discharging in the power-integration power-supply system, described system comprises AC/DC rectification module, batteries and the DC/AC inversion module that is coupled in turn by the electrical network output interface, it is characterized in that, said method comprising the steps of:
A. close of the output of described AC/DC rectification module to described batteries;
The output voltage amplitude of b. regulating described DC/AC inversion module is identical with line voltage with phase place;
C. the output with described DC/AC inversion module is connected with the electrical network output interface;
D. regulate the phase place of Phase Tracking line voltage of the output current of described DC/AC inversion module by closed-loop control, with to the meritorious energy of electrical network feedback.
5. method as claimed in claim 4 is characterized in that, among the described step a, by the output voltage of described AC/DC rectification module being turned down or directly closed the output of described AC/DC rectification module to described batteries.
6. as claim 4 or 5 described methods, it is characterized in that, in the described steps d, according to the detection of discharging current being controlled described batteries discharge electricity amount.
7. a method that realizes online storage battery activation in power-integration power-supply system is characterized in that, comprises that method according to claim 4 carries out the step of battery discharging.
8. a method that realizes that in power-integration power-supply system online storage battery nuclear holds is characterized in that, comprises that method according to claim 4 carries out the step of battery discharging.
9. a method that realizes that in power-integration power-supply system online accumulator internal resistance is measured is characterized in that, comprises that method according to claim 4 carries out the step of battery discharging.
10. in power-integration power-supply system, realize method for saving energy for one kind, it is characterized in that, comprise that method according to claim 4 carries out the step of battery discharging.
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| CN2009101096000A CN101630860B (en) | 2009-08-11 | 2009-08-11 | Power-integration power-supply system and method for discharging storage batteries |
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| CN103633744A (en) * | 2012-08-29 | 2014-03-12 | 朴明俊 | Power supply |
| CN104283250A (en) * | 2013-07-09 | 2015-01-14 | 盈正豫顺电子股份有限公司 | Multi-port Energy Storage System and Control Method Thereof |
| CN105425168A (en) * | 2016-01-08 | 2016-03-23 | 国网浙江宁波市鄞州区供电公司 | Storage battery capacity detection method and apparatus in power supply system |
| CN105467332A (en) * | 2015-12-15 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | Transformer station DC source active inversion on-line detection system |
| CN107086615A (en) * | 2016-02-15 | 2017-08-22 | 周锡卫 | A kind of ups system based on active maintenance function expanding device |
| CN107219470A (en) * | 2017-07-24 | 2017-09-29 | 深圳市泰昂能源科技股份有限公司 | The batteries property checked electric discharge device and method online |
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| CN111342534A (en) * | 2020-03-26 | 2020-06-26 | 国网河南省电力公司漯河供电公司 | Storage battery discharge control system and control method thereof |
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| CN104283250A (en) * | 2013-07-09 | 2015-01-14 | 盈正豫顺电子股份有限公司 | Multi-port Energy Storage System and Control Method Thereof |
| CN104283250B (en) * | 2013-07-09 | 2016-07-13 | 盈正豫顺电子股份有限公司 | Multi-port energy storage system and control method thereof |
| CN105467332A (en) * | 2015-12-15 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | Transformer station DC source active inversion on-line detection system |
| CN105425168A (en) * | 2016-01-08 | 2016-03-23 | 国网浙江宁波市鄞州区供电公司 | Storage battery capacity detection method and apparatus in power supply system |
| CN107086615B (en) * | 2016-02-15 | 2023-10-31 | 周锡卫 | UPS system based on active maintenance function expansion device |
| CN107086615A (en) * | 2016-02-15 | 2017-08-22 | 周锡卫 | A kind of ups system based on active maintenance function expanding device |
| CN107437825A (en) * | 2016-05-27 | 2017-12-05 | 恩斯迈电子(深圳)有限公司 | Current regulation system |
| CN107219470A (en) * | 2017-07-24 | 2017-09-29 | 深圳市泰昂能源科技股份有限公司 | The batteries property checked electric discharge device and method online |
| CN111342534A (en) * | 2020-03-26 | 2020-06-26 | 国网河南省电力公司漯河供电公司 | Storage battery discharge control system and control method thereof |
| CN113507162A (en) * | 2020-06-10 | 2021-10-15 | 国网浙江省电力有限公司温州供电公司 | Automatic capacity checking device and capacity checking method for direct current power supply system of transformer substation |
| CN113507163A (en) * | 2020-06-10 | 2021-10-15 | 国网浙江省电力有限公司温州供电公司 | Nuclear capacity switching device and nuclear capacity method of transformer substation direct current power supply system |
| CN113270889A (en) * | 2021-05-24 | 2021-08-17 | 华能海南发电股份有限公司东方电厂 | Factory direct-current storage battery discharging utilization system and method |
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