CN107947339A - A kind of uninterrupted energy storage for power supply system and its operation method - Google Patents
A kind of uninterrupted energy storage for power supply system and its operation method Download PDFInfo
- Publication number
- CN107947339A CN107947339A CN201710954817.6A CN201710954817A CN107947339A CN 107947339 A CN107947339 A CN 107947339A CN 201710954817 A CN201710954817 A CN 201710954817A CN 107947339 A CN107947339 A CN 107947339A
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- China
- Prior art keywords
- units
- mains
- supplied
- important load
- utility grid
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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
- H02J9/061—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 for DC powered loads
-
- 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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
-
- 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
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
Abstract
The invention discloses a kind of uninterrupted energy storage for power supply system and its operation method, wherein system includes array, PCS units, UPS units and thyristor operation bypass；Array connects PCS units and UPS units respectively；PCS units connect utility grid, are stored for when mains-supplied is in the default paddy electricity period, obtaining electric energy from utility grid and sending to array；UPS units connect important load, for when mains-supplied being abnormal or mains-supplied is in the default peak electricity period, electric energy being obtained from array, is powered to important load；Thyristor operation bypass connection utility grid and important load, for when mains-supplied is in default paddy electricity period or ordinary telegram period, powering to important load.The present invention in case of emergency, can quickly be switched to array and be powered by UPS units, greatly improve the power supply reliability of important load.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of uninterrupted energy storage for power supply system and its operation method.
Background technology
As the development of society and the raising of people's quality of life, requirement of the people for power quality are also higher and higher.
Some important loads, such as the operating condition of high-accuracy processing instrument, chemical industry equipment, computer room, industrial computer etc., for alternating current electricity
The temporary drop of net voltage, temporarily liter, power failure are all special sensitive.Therefore, important load is proposed for the reliability of electric power system
Increasingly higher demands.At present there is an urgent need to a kind of new uninterrupted energy storage for power supply system, to ensure these important loads
Continual stable operation, improves utility grid power supply reliability.
The content of the invention
Based on this, the present invention proposes a kind of uninterrupted energy storage for power supply system and its operation method, it is therefore intended that ensure and
The reliability for the electric power system for being used for important load operation is improved, is reduced because of utility grid voltage dip, temporary liter, power failure feelings
Economic loss caused by under condition.Meanwhile the electric power system can also reduce important load in the electric period operation in mains-supplied peak
Demand charge, reaches belt-tightening purpose.
A kind of uninterrupted energy storage for power supply system provided by the invention, including array, PCS units, UPS units and
Thyristor operation bypass；
The array connects PCS (Power Control System, energy accumulation current converter) units and UPS (no respectively
Uninterruptible power) unit；
The PCS units, connect utility grid, for when mains-supplied is in the default paddy electricity period, from alternating current
Electric energy is obtained in power grid and is sent to the array and is stored；
The UPS units, connect important load, for mains-supplied be abnormal or mains-supplied be in it is default
During the peak electricity period, electric energy is obtained from the array, is powered to important load；
The thyristor operation bypass, connects utility grid and important load, for being in default paddy in mains-supplied
When electric period or ordinary telegram period, power to important load.
As a kind of embodiment, uninterrupted energy storage for power supply system provided by the invention, further includes inspection travel bypass；
Inspection travel bypass, connects utility grid and important load, for the array, PCS units,
When UPS units or thyristor operation bypass maintenance, power to important load.
As a kind of embodiment, mains-supplied is abnormal the temporary drop including line voltage, temporarily rises or interrupt.
Based on same inventive concept, present invention also offers a kind of operation method of uninterrupted energy storage for power supply system, including
Following steps：
According to system using the peak electricity of local mains-supplied, paddy electricity, ordinary telegram period, set the PCS units different
The charged state of period and the UPS units discharge condition in different time periods；
When mains-supplied is in the default paddy electricity period, utility grid is bypassed to important load by thyristor operation
Power supply；Meanwhile the PCS units obtain electric energy from utility grid, charge to the array；The UPS units are kept
Output voltage is consistent with utility grid voltage, inactivity output；
When mains-supplied is in the default ordinary telegram period, utility grid is bypassed to important by thyristor operation
Load supplying；The PCS units are disconnected with the utility grid, and the UPS units keep output voltage and utility grid voltage
Unanimously, inactivity exports；
When mains-supplied is in the default peak electricity period, the PCS units and thyristor operation bypass are at the same time
Disconnected with utility grid；The UPS units output power, is powered by the electric discharge of array to important load；
After the mains-supplied peak electric period, the output voltage of the UPS units is kept and utility grid voltage one
Cause, after realization bypasses simultaneous interconnecting with thyristor operation, the UPS units gradually decrease its output power, until be zero, by
Utility grid is powered again through thyristor operation bypass to important load.
Further, the operation method of uninterrupted energy storage for power supply system of the invention, it is further comprising the steps of：
When the array, PCS units, UPS units or thyristor run bypass maintenance, utility grid passes through institute
Inspection travel is stated to bypass to important load power supply.
The beneficial effect of the present invention compared with the prior art is：
Uninterrupted energy storage for power supply system provided by the invention and its operation method, mains-supplied be in the peak electricity period or
Utility grid voltage occurs under the temporarily abnormal conditions of drop, temporary liter or power failure, and the power supply of important load can quickly switch
Powered to array by UPS units, greatly improve the power supply reliability of important load, reduce because of utility grid voltage
Temporarily drop, temporarily rise, economic loss caused by the case of power failure.Meanwhile important load can be also reduced in alternating current using the present invention
The demand charge of the electric period operation in power supply peak, reaches belt-tightening purpose.
Brief description of the drawings
Fig. 1 is the structure diagram for the uninterrupted energy storage for power supply system that the embodiment of the present invention one provides；
Fig. 2 is the structure diagram of uninterrupted energy storage for power supply system provided by Embodiment 2 of the present invention.
Embodiment
Below in conjunction with attached drawing, the technical characteristic above-mentioned and other to the present invention and advantage are clearly and completely described,
Obviously, described embodiment is only the section Example of the present invention, rather than whole embodiments.
Referring to Fig. 1, the uninterrupted energy storage for power supply system of the offer of the embodiment of the present invention one, including array 100, PCS are mono-
Member 200, UPS units 300 and thyristor operation bypass 400.Array 100 connects PCS units 200 and UPS units respectively
300, array 100 stores the energy needed for important load operation by PCS units 200, and is discharged by UPS units 300
Energy needed for important load operation.PCS units 200 connect utility grid, for when mains-supplied is in default paddy electricity
Between section when, electric energy obtained from utility grid and is sent to array 100 stored；UPS units 300 connect important negative
Carry, for powering under following two situations to important load：A, when alternating current is in the default peak electricity period；B, whichever
Period, as long as alternating current appearance exception, such as the temporary drop of voltage, temporarily liter, interruption, all supplied from UPS units 300 to important load
Electricity.
400 connection utility grid of thyristor operation bypass and important load, for being in default paddy electricity in mains-supplied
When period or ordinary telegram period, power to important load.
The uninterrupted energy storage for power supply system that embodiment one provides, the time of running use local mains-supplied according to system
Peak electricity, paddy electricity, ordinary telegram period, set 200 charged state in different time periods of PCS units and 300 different time sections of UPS units
Discharge condition；
When mains-supplied is in the default paddy electricity period, utility grid is by thyristor operation bypass 400 to important
Load supplying；Meanwhile PCS units 200 obtain electric energy from utility grid, charge to array 100；UPS units 300 are kept
Output voltage is consistent with utility grid voltage, inactivity output；
When mains-supplied is in the default ordinary telegram period, utility grid is by thyristor operation bypass 400 to important
Load supplying；PCS units 200 are disconnected with utility grid, and UPS units 300 keep output voltage consistent with utility grid voltage, nothing
Power output；
When mains-supplied is in default peak electric period, PCS units 200 and thyristor operation bypass 400 at the same time with
Utility grid disconnects；300 output power of UPS units, is powered by the electric discharge of array 100 to important load；Supplied in alternating current
After the electric peak electric period, the output voltage of UPS units 300 keeps consistent with utility grid voltage, in realization and thyristor
After operation 400 simultaneous interconnectings of bypass, UPS units 300 gradually decrease its output power, until being zero, are led to again by utility grid
Thyristor operation bypass 400 is crossed to power to important load.
The uninterrupted energy storage for power supply system that the present embodiment one provides, by setting array 100, PCS units 200, UPS
Unit 300 and thyristor operation bypass 400 form duplex feeding route, to ensure the reliability of important load power supply.
Specifically, when mains-supplied is in the default paddy electricity period, utility grid passes through thyristor operation bypass 400
Power to important load；Meanwhile PCS units 200 obtain electric energy from utility grid, charge to array 100；UPS units
300 keep output voltage consistent with utility grid voltage, inactivity output；When mains-supplied is in the default ordinary telegram period
When, utility grid is powered by thyristor operation bypass 400 to important load；PCS units 200 are disconnected with utility grid, and UPS is mono-
Member 300 keeps output voltage consistent with utility grid voltage, inactivity output, to ensure to be in the peak electric period in mains-supplied
Or there is temporary drop, temporary liter, power failure in emergency circumstances to utility grid voltage in section at any time, the power supply of important load
Array can be quickly switched to power by UPS units 300, greatly improve the power supply reliability of important load.
Referring to Fig. 2, uninterrupted energy storage for power supply system provided by Embodiment 2 of the present invention, on the basis of above-described embodiment one
Further include inspection travel bypass 500；
500 connection utility grids and important load of inspection travel bypass, for array 100, PCS units 200,
When UPS units 300 or thyristor operation 400 at least one maintenance of bypass, power to important load.For example, work as thyristor
When operation bypass 400 needs maintenance, utility grid is powered by inspection travel bypass 500 to important load.
The paddy electricity period is in when powering mode operates in mains-supplied, between using local peak valley usually according to system
Section, sets 200 charged state in different time periods of PCS units and 300 discharge condition in different time periods of UPS units.When in
During the paddy electricity period, alternating current input is charged by PCS units 200 to array 100, while alternating current input is transported by thyristor
Row bypass 400 is powered to important load, and control UPS units 300 keep output voltage consistent with utility grid voltage, but do not export
Power, with ensure to be in the peak electric period in mains-supplied or utility grid voltage occur temporary drop, temporarily rise, power failure it is urgent
In the case of, the power supply of important load can quickly be switched to array 100 and be powered by UPS units 300.
The ordinary telegram period is in when powering mode operates in mains-supplied, between using local peak valley usually according to system
Section, sets 200 charged state in different time periods of PCS units and 300 discharge condition in different time periods of UPS units.Work as alternating current
When power supply is in the ordinary telegram period, mains supply is disconnected with PCS units 200, and alternating current does not charge to array 100, alternating current electricity
Source is powered by thyristor operation bypass 400 to important load completely, and control UPS units 300 keep output voltage and alternating current electricity
Net voltage is consistent, but not output power, ensures to be in the peak electric period in mains-supplied or temporary drop, temporarily occurs in utility grid voltage
In emergency circumstances, the power supply of important load can quickly be switched to array 100 and pass through UPS units for liter, power failure
300 power supplies.
The peak electric period is in when powering mode operates in mains-supplied, between using local peak valley usually according to system
Section, sets 200 charged state in different time periods of PCS units and 300 discharge condition in different time periods of UPS units.When in
During the peak electricity period, mains supply is disconnected with PCS units 200, while thyristor operation bypass 400 is also disconnected with mains supply,
Mains supply is not powered to important load completely, and at this time, 300 output power of UPS units, the power supply of important load passes through electricity completely
The electric discharge power supply of pond array 100, when mains-supplied peak, the electric period terminates, and control UPS output voltages are still kept and alternating current
Network voltage is consistent, and realizes thyristor operation 400 simultaneous interconnectings of bypass, and the output power of UPS units 300 gradually decreases, directly
Most zero, mains supply is powered again through thyristor operation bypass 400 to important load.
There is temporary drop, temporary liter, power failure in emergency circumstances when powering mode operates in utility grid voltage, no matter this
When mains-supplied be in peak valley and put down which period, thyristor operation bypass 400 disconnects, and mains supply is not completely to important load
Power supply, 300 output power of UPS units, the power supply of important load is powered by the electric discharge of array 100 completely, until the above
After emergency, control UPS 300 output voltages of unit are consistent with utility grid voltage, and realize thyristor operation bypass
400 simultaneous interconnectings, the output power of UPS units 300 gradually decrease, until being zero, mains supply is run again through thyristor
Bypass 400 is powered to important load.
When powering mode operates in thyristor operation bypass 400, array 100, PCS units 200 or UPS units 300
At least one is needed in the case of overhauling, and mains supply is disconnected with thyristor operation bypass 400 at this time, and mains supply passes through
Inspection travel bypass 500 is powered to important load.After maintenance, corresponding Working mould is switched to according to the corresponding period
Formula.
Particular embodiments described above, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it will be appreciated that the foregoing is merely the specific embodiment of the present invention, the protection being not intended to limit the present invention
Scope.Particularly point out, to those skilled in the art, within the spirit and principles of the invention, that is done any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of uninterrupted energy storage for power supply system, it is characterised in that including array, PCS units, UPS units and brilliant lock
Pipe operation bypass；
The array connects PCS units and UPS units respectively；
The PCS units, connect utility grid, for when mains-supplied is in the default paddy electricity period, from utility grid
Middle acquisition electric energy and sending to the array is stored；
The UPS units, connect important load, for mains-supplied be abnormal or mains-supplied be in default peak electric
During the period, electric energy is obtained from the array, is powered to important load；
The thyristor operation bypass, connects utility grid and important load, for when mains-supplied is in default paddy electricity
Between section or during the ordinary telegram period, power to important load.
2. uninterrupted energy storage for power supply system according to claim 1, it is characterised in that further include inspection travel bypass；
The inspection travel bypass, connects utility grid and important load, for mono- in the array, PCS units, UPS
When member or thyristor operation bypass maintenance, power to important load.
3. uninterrupted energy storage for power supply system according to claim 1 or 2, it is characterised in that mains-supplied is abnormal bag
The temporary drop of line voltage is included, temporarily rises or interrupts.
It is 4. a kind of such as the operation method of the uninterrupted energy storage for power supply system of claims 1 to 3 any one of them, it is characterised in that
Comprise the following steps：
According to system using the peak electricity of local mains-supplied, paddy electricity, ordinary telegram period, the PCS units different time is set
The charged state and the UPS units discharge condition in different time periods of section；
When mains-supplied is in the default paddy electricity period, utility grid is supplied by thyristor operation bypass to important load
Electricity；Meanwhile the PCS units obtain electric energy from utility grid, charge to the array；The UPS units keep defeated
It is consistent with utility grid voltage to go out voltage, inactivity output；
When mains-supplied is in the default ordinary telegram period, utility grid is bypassed to important load by thyristor operation
Power supply；The PCS units are disconnected with the utility grid；The UPS units keep output voltage consistent with utility grid voltage,
Inactivity exports；
When mains-supplied is in the default peak electricity period, the PCS units and thyristor operation bypass while and city
Power grid disconnects；The UPS units output power, is powered by the electric discharge of array to important load；
After the mains-supplied peak electric period, the output voltage of the UPS units keeps consistent with utility grid voltage,
Realize after bypassing simultaneous interconnecting with thyristor operation, the UPS units gradually decrease its output power, until being zero, by alternating current
Power grid is powered again through thyristor operation bypass to important load.
5. the operation method of uninterrupted energy storage for power supply system according to claim 4, it is characterised in that further include following step
Suddenly：
When the array, PCS units, UPS units or thyristor run bypass maintenance, utility grid passes through the inspection
Operation bypass is repaiied to power to important load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954817.6A CN107947339A (en) | 2017-10-13 | 2017-10-13 | A kind of uninterrupted energy storage for power supply system and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710954817.6A CN107947339A (en) | 2017-10-13 | 2017-10-13 | A kind of uninterrupted energy storage for power supply system and its operation method |
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| Publication Number | Publication Date |
|---|---|
| CN107947339A true CN107947339A (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710954817.6A Pending CN107947339A (en) | 2017-10-13 | 2017-10-13 | A kind of uninterrupted energy storage for power supply system and its operation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146858A (en) * | 2020-01-20 | 2020-05-12 | 深圳市科陆电子科技股份有限公司 | Uninterruptible power supply method and system |
| CN112491125A (en) * | 2019-09-12 | 2021-03-12 | 北京新能源汽车股份有限公司 | Trade power station and power supply system thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882237A (en) * | 2011-07-15 | 2013-01-16 | 珠海银通新能源有限公司 | Intelligent energy storage machine and operating method thereof |
| CN204068410U (en) * | 2014-06-13 | 2014-12-31 | 刘卡丁 | Urban track traffic light current integrated UPS system |
-
2017
- 2017-10-13 CN CN201710954817.6A patent/CN107947339A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102882237A (en) * | 2011-07-15 | 2013-01-16 | 珠海银通新能源有限公司 | Intelligent energy storage machine and operating method thereof |
| CN204068410U (en) * | 2014-06-13 | 2014-12-31 | 刘卡丁 | Urban track traffic light current integrated UPS system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491125A (en) * | 2019-09-12 | 2021-03-12 | 北京新能源汽车股份有限公司 | Trade power station and power supply system thereof |
| CN111146858A (en) * | 2020-01-20 | 2020-05-12 | 深圳市科陆电子科技股份有限公司 | Uninterruptible power supply method and system |
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Application publication date: 20180420 |
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