CN210380273U - Online 0 switching bidirectional energy storage system - Google Patents
Online 0 switching bidirectional energy storage system Download PDFInfo
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- CN210380273U CN210380273U CN201921549601.2U CN201921549601U CN210380273U CN 210380273 U CN210380273 U CN 210380273U CN 201921549601 U CN201921549601 U CN 201921549601U CN 210380273 U CN210380273 U CN 210380273U
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- ups
- peak clipping
- energy storage
- valley filling
- voltage stabilizing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a two-way energy storage system is switched to online 0 adopts and combines together UPS backup power supply system and energy storage system, falls into 2 groups with original electric storage battery, and a set of voltage that is used for UPS supports, and another group is used for the peak clipping to fill in the millet. By adopting the operation mode of peak clipping and valley filling, the power consumption cost is reduced, the number of batteries in the UPS system is reduced, the polarization risk of the batteries is reduced, the useless floating charge self-power consumption of the system is reduced, the standby power capacity is improved, and the system stability is improved.
Description
Technical Field
The utility model relates to an emergent power supply technique and energy storage technique, in particular to online 0 switches two-way energy storage system.
Background
In the current stage, the uninterrupted power supply system mainly adopts the technical scheme of UPS and battery, and is matched with a diesel generator to realize the functions of fast switching and long-time power supply. Under the condition of higher requirement on system switching speed, the scheme is often adopted, and a plurality of groups of systems are configured to realize redundant backup, so that the safety and the stability of the system are improved. Such as IDC data centers, etc.
Under the condition that the commercial power is free of problems, the battery always keeps a floating charging state. Under normal conditions, the battery does not play any practical value, and the system maintenance cost is wasted. And the battery at this moment can generate self-discharge phenomenon, the UPS system becomes an energy consumption system, and much electric energy can be wasted. The battery is kept in a floating state for a long time, the polarization phenomenon of the battery can be generated, and the discharge of the battery can be greatly influenced. Because the battery does not produce practical value and the battery cost is higher, the power supply capacity is limited to a certain extent, and although the diesel generator can make up for the problem of insufficient power supply capacity of the battery, the diesel generator can cause great environmental pollution.
Disclosure of Invention
For the make full use of realization battery and equipment improve the time of being equipped with electricity and reduce the power consumption cost, based on above problem, the utility model provides a two-way energy storage system of online 0 switching, include: dividing the storage batteries into 2 groups, wherein one group is used for a voltage stabilizing system of the UPS, and the other group is used for a peak clipping and valley filling system;
the peak clipping and valley filling system comprises an energy storage meter, an isolation transformer and an AC/DC converter, wherein the AC/DC converter is connected with a storage battery pack;
the UPS voltage stabilizing system comprises an AC/DC converter and an uninterrupted load, wherein the uninterrupted load can adaptively change the size of the load to ensure the stable voltage output of the UPS system, and the storage battery pack is connected with the AC/DC converter;
the system further comprises an intelligent switching system, and the intelligent switching system monitors the currents of the UPS voltage stabilizing system and the peak clipping and valley filling system through a current sampling Hall sensor on the AC side of the power grid and executes the work of power storage and discharge according to the current sampling Hall sensor.
The peak clipping and valley filling system is used for charging or discharging the self storage battery in the peak valley.
Further comprising, the UPS voltage stabilizing system stabilizes the voltage output of the UPS voltage stabilizing system through the storage battery pack, and prevents overcharge in cooperation with the peak clipping and valley filling system.
The overcharge prevention is to store the excessive electric energy of the power grid through a peak clipping and valley filling system, so as to prevent the floating charge of an electric storage battery pack in the UPS system.
Furthermore, the storage battery packs in the UPS voltage stabilizing system and the peak clipping and valley filling system are integrated, and the distribution of the storage battery packs is executed through a balanced scheduling algorithm.
The balance scheduling algorithm can be used for executing the distribution of the storage battery pack of the UPS voltage stabilization system according to the voltage load range of the uninterrupted load as a parameter.
The intelligent switching system is connected with the diesel engine power generation system and provides power for an external power grid.
The utility model discloses can realize following one or more beneficial effect at least, adopt the operational mode that the millet was filled out in the peak clipping, reduce the quantity that the power consumption cost reduced battery in the UPS system, reduce the battery polarization risk, the useless floating charge of lowering system is from power consumptive, improves and is equipped with electric capacity increase system stability.
Drawings
The features and advantages of the present disclosure will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the disclosure in any way, in which
FIG. 1 is a schematic diagram of an online 0-switching bidirectional energy storage system
Detailed Description
These and other features and characteristics of the present disclosure, as well as the methods of operation and functions of the related elements of structure and the combination of parts and economies of manufacture, will be better understood by reference to the following description and drawings, which form a part of this specification. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure. It will be understood that the figures are not drawn to scale. Various block diagrams are used in this disclosure to illustrate various variations of embodiments according to the disclosure.
Example 1
As described in the background art, the existing UPS backup power supply mode generally adopts an online operation mode, where the switching time of the online operation mode is less than 4ms, so as to meet the requirement of uninterrupted power supply of precision equipment. The standby time is related to the battery capacity. When the power grid loses power, the UPS is in an online mode and can supply power to important loads uninterruptedly. The system has the biggest defect that the battery needs to be maintained regularly, the battery polarization phenomenon occurs in the long-time floating charge state of the battery, and the battery activation experiment is required to be carried out after the battery is operated for a period of time. Meanwhile, the floating charging state does not generate economic benefit, and the system is always charged at low power, so that the maintenance cost of the system is greatly increased.
Therefore, the utility model provides a system adopts and combines together UPS backup power supply system and energy storage system. The original batteries are divided into 2 groups, one group is used for voltage support of the UPS, and the other group is used for peak clipping and valley filling. The peak clipping and valley filling function is to charge the battery in the valley period and discharge in the peak period, and according to the commercial electricity price structure, there will be a peak-valley difference, and the income can be obtained through the mode. The mode can obtain benefits on one hand and eliminate the influence of battery polarization on the battery on the other hand. Therefore, by combining the modes, the operation cost of the system can be greatly reduced, and the reliability of the system is improved. The online 0-switching bidirectional energy storage system.
As shown in fig. 1, the method may specifically include: the system comprises an intelligent switching system, wherein the intelligent switching system is respectively connected with a diesel generator, a UPS voltage stabilizing system and a peak clipping and valley filling energy storage system. The batteries are grouped and respectively matched with the UPS voltage stabilizing system and the peak clipping and valley filling system, the system is charged during peak and valley, the other side of the system is controlled by the batteries in the UPS voltage stabilizing system to stabilize the voltage output of the UPS voltage stabilizing system, the other group of the system is matched and matched with the peak clipping and valley filling system, the UPS power supply is conveniently prevented from being overcharged, and the balance configuration of the power output of the whole power grid can be realized through the energy storage distribution of the peak clipping and valley filling system. It is obvious to those skilled in the art that the diesel generator in fig. 1 can be embodied as a diesel power generation system, and can also be other self-sufficient power generation systems.
The UPS voltage stabilizing system and the power storage battery pack in the peak clipping and valley filling system are integrated, and the distribution of the power storage battery pack is executed through a balanced scheduling algorithm. The balance scheduling algorithm can be used for executing the distribution of the storage battery pack of the UPS voltage stabilization system according to the voltage load range of the uninterrupted load as a parameter. The balancing algorithm may be embodied as a load scheduling algorithm of the DNS.
The peak clipping and valley filling system comprises an energy storage meter and an AC/DC converter, wherein the AC/DC converter is connected with an electric storage battery. The method further comprises the following steps: an isolation transformer. The isolation transformer is arranged between the energy storage metering meter and the AC/DC converter. The energy storage meter can also be other meters with similar functions.
The UPS voltage stabilizing system comprises an AC/DC converter and an uninterrupted load, wherein the uninterrupted load can adaptively change the size of the load to ensure the stable voltage output of the UPS voltage stabilizing system, and the storage battery pack is connected with the AC/DC converter.
The online 0-switching bidirectional energy storage system comprises an oil extraction machine power generation system, and the oil extraction machine power generation system, the intelligent switching system and the power grid are connected.
The intelligent switching system can collect respective currents through three current sampling Hall sensors H1_ A, H1_ B, H1_ C on the alternating current side of the power grid, so that input voltage or current data of the power grid are obtained, and control is further executed.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
Claims (3)
1. The utility model provides an online 0 switches two-way energy storage system which characterized in that: dividing the storage batteries into two groups, wherein one group is used for a UPS voltage stabilizing system, and the other group is used for a peak clipping and valley filling system;
the peak clipping and valley filling system comprises an energy storage meter, an isolation transformer and an AC/DC converter, wherein the AC/DC converter is connected with a storage battery pack;
the UPS voltage stabilizing system comprises an AC/DC converter and an uninterrupted load, wherein the uninterrupted load can adaptively change the size of the load to ensure the stable voltage output of the UPS system, and the storage battery pack is connected with the AC/DC converter;
the system further comprises an intelligent switching system, wherein the intelligent switching system monitors the currents of the UPS voltage stabilizing system and the peak clipping and valley filling system through a current sampling Hall sensor on the AC side of the power grid, and executes the work of power storage and discharge according to the current monitoring;
the peak clipping and valley filling system is used for charging or discharging the self storage battery during peak valley;
the UPS voltage stabilizing system stabilizes the voltage output of the UPS voltage stabilizing system through the electric storage battery pack and prevents overcharge by matching with the peak clipping and valley filling system.
2. The bidirectional energy storage system of claim 1, wherein the overcharge prevention is performed by storing excess electric energy in the grid through a peak clipping and valley filling system, so as to prevent floating charge of the storage battery pack in the UPS voltage stabilization system.
3. The bidirectional energy storage system of claim 1, further comprising a diesel power generation system, the diesel power generation system being connected to the intelligent switching system to provide power to an external power grid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921549601.2U CN210380273U (en) | 2019-09-17 | 2019-09-17 | Online 0 switching bidirectional energy storage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921549601.2U CN210380273U (en) | 2019-09-17 | 2019-09-17 | Online 0 switching bidirectional energy storage system |
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| CN210380273U true CN210380273U (en) | 2020-04-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725879A (en) * | 2021-08-11 | 2021-11-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
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2019
- 2019-09-17 CN CN201921549601.2U patent/CN210380273U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725879A (en) * | 2021-08-11 | 2021-11-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
| CN113725879B (en) * | 2021-08-11 | 2023-06-30 | 重庆瑞盾科技发展有限公司 | Peak clipping and valley filling energy storage power supply system and method for stock base station |
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