CN109347198A - Uninterruptible power system and control method - Google Patents
Uninterruptible power system and control method Download PDFInfo
- Publication number
- CN109347198A CN109347198A CN201811384684.4A CN201811384684A CN109347198A CN 109347198 A CN109347198 A CN 109347198A CN 201811384684 A CN201811384684 A CN 201811384684A CN 109347198 A CN109347198 A CN 109347198A
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- China
- Prior art keywords
- bus
- high voltage
- power supply
- power source
- inverter
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- 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
-
- 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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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The present invention discloses a kind of uninterruptible power system, including working normally power supply, backup power source, high voltage dc bus, inverter module and the first rectification module, power supply is worked normally to connect by first rectification module with the high voltage dc bus, backup power source and inverter module are connect with the high voltage dc bus, wherein, backup power source is provided with backup power source management system, inverter module is provided with inverter module control system, and the output end of inverter module is the output end of the uninterruptible power system.The present invention replaces the switching switch of the ATS in traditional UPS power supply system using the scheme that inverter, fairing and high voltage dc bus combine, it does not need to load classification power supply, since the core of inverter and fairing is technology maturation and the microminiaturized electronic device with price advantage, can integrate design, therefore, the present invention can also reduce cost while realizing all load uninterrupted power supplies, reduce small product size.
Description
Technical field
The present invention relates to field of power supplies, and in particular to a kind of uninterruptible power system and control method.
Background technique
As shown in Figure 1, traditional uninterruptible power system by alternating current, standby generator sets, ATS switching switch, UPS and
Cable connection between each component is constituted, and the output end of ATS switching switch is connected to normal load, and the output end of UPS is connected to
Important load, when alternating current is normal, the switching that ATS switches arrives alternating current, and normal load and important load be equal to be obtained electric, works as alternating current
When abnormal, UPS continues as important load power supply, thus realize the uninterrupted power supply of important load, for normal load, by
It is required to certain time in the switching of ATS switching switch and the starting of stand-by generator, so normal load will appear in power supply
Disconnected phenomenon, if corresponding UPS is respectively configured using normal load as important load, since the quantity of normal load is remote
Much larger than important load, it so, can not only allow the huge bad control of the textural anomaly of entire uninterruptible power system, also can
Greatly improve cost.
Summary of the invention
In order to overcome the deficiencies of the prior art, the present invention provides a kind of uninterruptible power system, by using with backup power source
The high voltage dc bus being directly connected to and the inverter being directly connected to high voltage dc bus, the output end connection of inverter
It loads (not needing to carry out classification power supply to load), works normally power supply (can be alternating current) then by fairing and high straightening
Flow bus connection, to realize in city's electrical anomaly by the purpose of backup power source uninterrupted power supply, simultaneously as inverter and
The core of fairing is technology maturation and the microminiaturized electronic device with price advantage, and can integrate designs, therefore, this
Invention can also reduce cost while realizing all load uninterrupted power supplies, reduce small product size.To solve the above technology
Problem, the present invention are realized by following technological means:
Uninterruptible power system, including work normally power supply, backup power source, high voltage dc bus, inverter module and first
Rectification module, the normal work power supply is connect by first rectification module with the high voltage dc bus, described spare
Power supply and the inverter module are connect with the high voltage dc bus, wherein the backup power source is provided with standby electricity source capsule
Reason system, the inverter module are provided with inverter module control system, and the output end of the inverter module is the uninterrupted electricity
The output end of source system.
It further, further include the standby generator sets being connect by the second rectification module with the high voltage dc bus,
The standby generator sets are provided with stand-by generator set control system.
Further, the standby generator sets include n stand-by generator, and second rectification module includes n whole
Device is flowed, each stand-by generator is connect by a rectifier with the high voltage dc bus.
Further, the inverter module includes m inverter, and the input terminal of each inverter and the high voltage direct current are female
Line connection, m output end of the output end of m inverter as the inverter.
The method for controlling above-mentioned uninterruptible power system, comprising:
Judge whether the voltage of high voltage dc bus is normal by backup power source management system, if normally, do not started standby
With power supply or stop backup power source power supply or Charge Management is carried out to backup power source, otherwise, carries out in next step；
It is powered by backup power source management system control backup power source and exports direct current to high voltage dc bus；
It is defeated that the direct current progress inversion that inverter module exports high voltage dc bus is controlled by inverter module control system
Out.
Further, judge whether the voltage of high voltage dc bus is normal by backup power source management system described in carrying out
Simultaneously, further includes:
It is whether normal by stand-by generator set control system detection normal work power supply, if normally, do not started spare
Otherwise the standby generator sets that generating set or stopping are currently running carry out in next step；
Standby generator sets starting is controlled by stand-by generator set control system or is continued to run, and the second rectification mould is passed through
The alternating current that block exports standby generator sets is rectified and is output to high voltage dc bus, is simultaneously stopped backup power source confession
Electricity；
It is defeated that the direct current progress inversion that inverter module exports high voltage dc bus is controlled by inverter module control system
Out.
Further, described that standby generator sets starting is controlled by stand-by generator set control system or continues to run packet
It includes: standby generator sets starting being controlled by stand-by generator set control system or is continued to run, is entered in standby generator sets
Subsequent rectifying action is carried out after stable state.
Further, the method also includes: moment works normally power supply by the detection of stand-by generator set control system
It is whether normal, as long as normal work power supply is normal, by working normally power supply power supply, it is simultaneously stopped the spare hair being currently running
Motor group.
Further, the Current Voltage on the high voltage dc bus is 530-560VDC.
The present invention directly connects by using the high voltage dc bus being directly connected to backup power source and with high voltage dc bus
The output end of the inverter connect, inverter connects load, works normally power supply (can be alternating current) and then passes through fairing
It is connect with high voltage dc bus, to realize in city's electrical anomaly by the purpose of backup power source uninterrupted power supply, simultaneously as inverse
Become the core of device and fairing as technology maturation and there is the microminiaturized electronic device of price advantage, can integrate is set
Meter, therefore, the present invention can also reduce cost while realizing all load uninterrupted power supplies, reduce small product size.
Detailed description of the invention
Fig. 1 is UPS power supply system structural block diagram in the prior art.
Fig. 2 is the uninterruptible power system structural block diagram that embodiment 1 provides.
Fig. 3 is the control method flow chart that embodiment 2 provides.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to make those skilled in the art more fully understand technical solution of the present invention
Applying example, the present invention is described in further detail.
Embodiment 1
As shown in Fig. 2, the present embodiment provides a kind of uninterruptible power system, including work normally power supply, backup power source, height
Press DC bus, inverter module and the first rectification module, the normals work power supply pass through first rectification module with it is described
High voltage dc bus connection, the backup power source and the inverter module are connect with the high voltage dc bus, wherein described
Backup power source is provided with backup power source management system, and the inverter module is provided with inverter module control system, the inversion mould
The output end of block is the output end of the uninterruptible power system.
What needs to be explained here is that backup power source can be battery group, it is also possible to other and is capable of providing direct current
Power supply unit, in the present embodiment, backup power source and to work normally power supply be all by high voltage dc bus is that inverter module is powered,
The output end of inverter module is connected with load, and whole system structure is simple, easy to maintain, without classifying to load, regardless of
It is normal load or important load, can realizes uninterrupted power supply, in addition, due to is not related to ATS switching switch, this implementation
The operational reliability of example greatly improves, and is connected in parallel on high voltage dc bus due to working normally power supply and backup power source, institute
To work normally the risk for not having short circuit between power supply and backup power source or colliding, power supply reliability is high.
It should also be noted that, backup power source and high voltage dc bus are directly connected in the present embodiment course of work,
When normal work power supply is normal, the voltage of backup power source and the voltage of high voltage dc bus are equal or very similar, once
Abnormity of power supply is worked normally, high voltage dc bus voltage can gradually decrease, and backup power source management system can detect high pressure at this time
The voltage change of DC bus, and then control backup power source and export electric current to high voltage dc bus, reach the mesh of uninterrupted power supply
, if worked normally, power up is normal, and backup power source management system controls high voltage dc bus and carries out to backup power source
Charge Management.
Preferably, the present embodiment further includes the spare hair being connect by the second rectification module with the high voltage dc bus
Motor group, the standby generator sets are provided with stand-by generator set control system.
What needs to be explained here is that whether just stand-by generator set control system can detect constantly works normally power supply
Often, if once detecting normal work abnormity of power supply, controlling standby generator sets starting, (this when, backup power source was also opened
Begin to export stable DC to high voltage dc bus), in order to improve power supply quality, enter stable state in control standby generator sets
Afterwards, then control fairing to the electric current that standby generator sets issue carry out rectification be then output to high voltage dc bus, simultaneously
Backup power source management system controls high voltage dc bus and carries out Charge Management to backup power source.
It should also be noted that, either backup power source power supply (before standby generator sets enter stable state) or spare power generation
Unit power supply, the control system of standby generator sets can all detect constantly work normally power supply it is whether normal, only work normally
Power supply is normal, then restores to work normally power supply power supply at once.
Preferably, the standby generator sets include n stand-by generator, second rectification module includes n whole
Device is flowed, each stand-by generator is connect by a rectifier with the high voltage dc bus.
Preferably, the inverter module includes m inverter, the input terminal of each inverter and the high voltage direct current are female
Line connection, m output end of the output end of m inverter as the inverter.
What needs to be explained here is that n rectifier, which can integrate, is designed to a rectification module, m inverter can collect
At being designed to an inverter module, if there are dilatation needs below, the rectifier or rectification module of direct increment type and connect therewith
The stand-by generator (group) connect needs the newly-increased inverter or inverse connecting with high voltage dc bus if load increases
Become module.
Embodiment 2
As shown in figure 3, the present embodiment provides a kind of method of uninterruptible power system provided by control embodiment 1, packet
It includes:
Judge whether the voltage of high voltage dc bus is normal by backup power source management system, if normally, do not started standby
With power supply or stop backup power source power supply or Charge Management is carried out to backup power source, otherwise, carries out in next step；
It is powered by backup power source management system control backup power source and exports direct current to high voltage dc bus；
It is defeated that the direct current progress inversion that inverter module exports high voltage dc bus is controlled by inverter module control system
Out.
Preferably, judging high voltage dc bus carrying out the backup power source management system that passes through in the present embodiment
While whether voltage is normal, further includes:
It is whether normal by stand-by generator set control system detection normal work power supply, if normally, do not started spare
Otherwise the standby generator sets that generating set or stopping are currently running carry out in next step；
Standby generator sets starting is controlled by stand-by generator set control system or is continued to run, and the second rectification mould is passed through
The alternating current that block exports standby generator sets is rectified and is output to high voltage dc bus, is simultaneously stopped backup power source confession
Electricity；
It is defeated that the direct current progress inversion that inverter module exports high voltage dc bus is controlled by inverter module control system
Out.
As advanced optimizing, in the present embodiment, the stand-by generator set control system that passes through controls stand-by generator
It includes: to control standby generator sets starting by stand-by generator set control system or continue to run that group, which starts or continues to run,
Subsequent rectifying action is carried out after standby generator sets enter stable state.
What needs to be explained here is that since standby generator sets by starting to stable state need certain time, this process
It exports electric current or output voltage is unstable, therefore first passing through backup power source offer stabilization when working normally abnormity of power supply can
The current or voltage leaned on to high voltage dc bus, after standby generator sets enter stable state again by fairing export electric current or
Voltage is to high voltage dc bus, to guarantee power supply quality.
When implementing the present embodiment, the moment whether just power supply can be worked normally by the detection of stand-by generator set control system
Often, as long as normal work power supply is normal, by working normally power supply power supply, it is simultaneously stopped the stand-by generator being currently running
Group.
In the present embodiment, the Current Voltage on the high voltage dc bus is 530-560VDC.
Pair current embodiment require that being illustrated, when implementing the present embodiment, backup power source management system is to standby electricity
Source charges and discharges management, and stand-by generator set control system is to the starting of standby generator sets, operation and stops carrying out
Management, backup power source management system can be managed backup power source by the voltage on detection high voltage dc bus, standby
Whether the working condition of power supply can be worked normally normally come to standby generator sets by detection with gen-set control system
Be managed, two sets management can separate carry out, also can integrate in a control device, according to the design of user need into
Row design, in addition, when working normally power supply becomes abnormal from normal operating conditions, backup power source can be immediately in the present embodiment
Response, and the time for starting the time and entering stable state of standby generator sets is relatively long, response speed can be slower than backup power source,
After the power supply of standby generator sets reaches stable state, the direct current for rectifying outputting high quality by fairing is female to high voltage direct current
Line, the voltage of high voltage dc bus restore normal, and backup power source stops power supply under the management of backup power source management system and goes forward side by side
The corresponding Charge Management of row.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (9)
1. uninterruptible power system, which is characterized in that including working normally power supply, backup power source, high voltage dc bus, inversion mould
Block and the first rectification module, the normal work power supply are connect by first rectification module with the high voltage dc bus,
The backup power source and the inverter module are connect with the high voltage dc bus, wherein the backup power source is provided with standby
With power-supply management system, the inverter module is provided with inverter module control system, and the output end of the inverter module is described
The output end of uninterruptible power system.
2. uninterruptible power system according to claim 1, which is characterized in that further include by the second rectification module and institute
The standby generator sets of high voltage dc bus connection are stated, the standby generator sets are provided with stand-by generator set control system.
3. uninterruptible power system according to claim 2, which is characterized in that the standby generator sets include n standby
With generator, second rectification module includes n rectifier, and each stand-by generator passes through a rectifier and the high pressure
DC bus connection.
4. uninterruptible power system according to claim 1, which is characterized in that the inverter module includes m inverter,
The input terminal of each inverter is connect with the high voltage dc bus, m of the output end of m inverter as the inverter
A output end.
5. the method for controlling uninterruptible power system described in claim 1-4 any one characterized by comprising
Judge whether the voltage of high voltage dc bus is normal by backup power source management system, if normally, not starting standby electricity
Source stops backup power source power supply or carries out Charge Management to backup power source, otherwise, carries out in next step；
It is powered by backup power source management system control backup power source and exports direct current to high voltage dc bus；
Inverter module is controlled by inverter module control system, and inversion output is carried out to the direct current that high voltage dc bus exports.
6. according to the method described in claim 5, it is characterized in that, carrying out the backup power source management system that passes through judges high pressure
While whether the voltage of DC bus is normal, further includes:
It is whether normal by stand-by generator set control system detection normal work power supply, if normally, not starting spare power generation
Otherwise the standby generator sets that unit or stopping are currently running carry out in next step；
Standby generator sets starting is controlled by stand-by generator set control system or is continued to run, and the second rectification module pair is passed through
The alternating current of standby generator sets output is rectified and is output to high voltage dc bus, is simultaneously stopped backup power source power supply；
Inverter module is controlled by inverter module control system, and inversion output is carried out to the direct current that high voltage dc bus exports.
7. according to the method described in claim 6, it is characterized in that, described spare by the control of stand-by generator set control system
It includes: to control standby generator sets starting by stand-by generator set control system or continue that generating set, which starts or continues to run,
Operation, carries out subsequent rectifying action after standby generator sets enter stable state.
8. according to the method described in claim 6, it is characterized in that, the method also includes: the moment passes through standby generator sets
Whether control system detection works normally power supply normal, as long as normal work power supply is normal, by working normally power supply power supply,
It is simultaneously stopped the standby generator sets being currently running.
9. according to the method described in claim 5, it is characterized in that, the Current Voltage on the high voltage dc bus is 530-
560VDC。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384684.4A CN109347198A (en) | 2018-11-20 | 2018-11-20 | Uninterruptible power system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384684.4A CN109347198A (en) | 2018-11-20 | 2018-11-20 | Uninterruptible power system and control method |
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| Publication Number | Publication Date |
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| CN109347198A true CN109347198A (en) | 2019-02-15 |
Family
ID=65316390
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811384684.4A Pending CN109347198A (en) | 2018-11-20 | 2018-11-20 | Uninterruptible power system and control method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456877A (en) * | 2020-05-07 | 2020-07-28 | 河南柴油机重工有限责任公司 | Method and system for automatic start control of main and standby generator sets |
| CN112196739A (en) * | 2020-10-10 | 2021-01-08 | 国电联合动力技术有限公司 | Wind generating set uninterrupted power supply intelligent regulation and control system and method |
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| CN102468682A (en) * | 2010-11-05 | 2012-05-23 | 湖南丰日电源电气股份有限公司 | High voltage direct current power supply system for both alternating current purpose and direct current purpose |
| CN104242442A (en) * | 2014-08-26 | 2014-12-24 | 浙江大学 | Double-energy-source uninterruptible power supply device and method thereof |
| CN204205968U (en) * | 2014-10-13 | 2015-03-11 | 深圳西驰电气技术有限公司 | Variable frequency power supply |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102468682A (en) * | 2010-11-05 | 2012-05-23 | 湖南丰日电源电气股份有限公司 | High voltage direct current power supply system for both alternating current purpose and direct current purpose |
| CN104242442A (en) * | 2014-08-26 | 2014-12-24 | 浙江大学 | Double-energy-source uninterruptible power supply device and method thereof |
| CN204205968U (en) * | 2014-10-13 | 2015-03-11 | 深圳西驰电气技术有限公司 | Variable frequency power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111456877A (en) * | 2020-05-07 | 2020-07-28 | 河南柴油机重工有限责任公司 | Method and system for automatic start control of main and standby generator sets |
| CN112196739A (en) * | 2020-10-10 | 2021-01-08 | 国电联合动力技术有限公司 | Wind generating set uninterrupted power supply intelligent regulation and control system and method |
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