CN203536973U - Energy storage system - Google Patents
Energy storage system Download PDFInfo
- Publication number
- CN203536973U CN203536973U CN201320621215.6U CN201320621215U CN203536973U CN 203536973 U CN203536973 U CN 203536973U CN 201320621215 U CN201320621215 U CN 201320621215U CN 203536973 U CN203536973 U CN 203536973U
- Authority
- CN
- China
- Prior art keywords
- current transformer
- current
- transformer
- battery pack
- control device
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Abstract
The utility model relates to an energy storage system. The system comprises a network side isolation transformer and N current transformer subsystems, wherein N is an integer greater than 1. Each current transformer subsystem comprises a current transformer, a battery pack, and a battery control device. In each current transformer subsystem, the current transformer is separately connected to the battery pack and the battery control device, and the battery control device is also connected to the battery pack. The current transformers in all the current transformer subsystems are parallelly connected and then connected into a primary side of the network side isolation transformer. A secondary side of the network side isolation transformer is connected to a power grid. The system can lower or eliminate peak and valley values in power utilization, smoothes electricity load, and at the same time, balances distribution of the total load current in all the current transformers to achieve load sharing.
Description
Technical field
The utility model relates to electrical power storage and transformation of electrical energy technical field, particularly relates to a kind of energy-storage system.
Background technology
Electric energy is one of energy being most widely used in the world at present.For user, electric energy comes from electrical network, and in the different moment, user is different to the demand of electric energy, thereby utilization of power exists peak-to-valley value in time, and the safety of this production for electric energy, utilization and power equipment is all disadvantageous.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of energy-storage system, can reduce or eliminate the peak-to-valley value on utilization of power, level and smooth power load.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of energy-storage system, and this system comprises: net side isolating transformer and N current transformer subsystem, wherein, N is greater than 1 integer;
Described in each, current transformer subsystem comprises: current transformer, battery pack, battery control device;
Described in each, in current transformer subsystem, described current transformer is connected with described battery pack, battery control device respectively, and described battery control device is also connected with described battery pack;
After described current transformer described in each in current transformer subsystem is parallel with one another, access the former limit of described net side isolating transformer;
The secondary of described net side isolating transformer gets access to grid.
On the basis of technique scheme, the utility model can also be done following improvement:
Further, described in each, between the described current transformer in current transformer subsystem, there is communication connection.
The beneficial effects of the utility model are: in the utility model, and the input of direct current that the battery pack in each current transformer subsystem is current transformer, the operating state that battery control device can monitoring battery group, guarantees its safe operation.Each current transformer subsystem is parallel with one another, thereby one side has formed an energy-storage system on the former limit of net side isolating transformer, can when electrical network electricity consumption valley, store the unnecessary electric energy of electrical network, and to electrical network, carry the electric energy having stored when peak value, thereby reach the object that reduces or eliminate utilization of power peak-to-valley value, level and smooth power load.Meanwhile, this system has also improved the reliability of electrical network, has reduced electric energy use cost.
Accompanying drawing explanation
Fig. 1 is the structure chart of the energy-storage system that the utility model proposes.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
Fig. 1 is the structure chart of the energy-storage system that the utility model proposes.As shown in Figure 1, this system comprises: net side isolating transformer 104 and N current transformer subsystem, wherein, N is greater than 1 integer, thereby this system is minimum comprises 2 current transformer subsystems.Each current transformer subsystem comprises: current transformer 102, battery pack 101, battery control device 103.
In each current transformer subsystem, current transformer 102 is connected with battery pack 101, battery control device 103 respectively, and battery control device 103 is also connected with battery pack 101.
After current transformer 102 in each current transformer subsystem is parallel with one another, the former limit of Access Network side isolating transformer 104, the secondary of net side isolating transformer 104 gets access to grid 105.The electrical network 105 here refers to the electrical network of 380 volts.
In the utility model, battery control device 103 can be realized with common battery management system (BMS), it is the tie between battery pack 101 and user, state that can monitoring battery group 101, improve the utilance of battery pack 101, prevent that battery pack 101 from occurring overcharging and overdischarge, extend the useful life of battery pack 101.Battery control device 103 is connected with current transformer 102, and the operating state of the battery pack 101 that monitoring can be obtained sends to current transformer 102, for it, under the different operating state of battery pack 101, judges.
Net side isolating transformer 104 transformer that to be a kind of secondary and former limit be isolated from each other on electric, can avoid touching accidentally simultaneously electrified body (or because of insulation damages may be charged metal parts) and the danger that brings of ground, assurance Electrical Safety.In the utility model, the secondary of net side isolating transformer 104 gets access to grid 105, and former limit is connected with above-mentioned energy storage device by connecting the current transformer 102 after parallel connection, thereby has realized the energy exchange on electrical isolation basis between electrical network 105 and this energy storage device.
As can be seen here, in the utility model, the input of direct current that the battery pack in each current transformer subsystem is current transformer, the operating state that battery control device can monitoring battery group, guarantees its safe operation.Each current transformer subsystem is parallel with one another, thereby one side has formed an energy-storage system on the former limit of net side isolating transformer, can when electrical network electricity consumption valley, store the unnecessary electric energy of electrical network, and to electrical network, carry the electric energy having stored when peak value, thereby reach the object that reduces or eliminate utilization of power peak-to-valley value, level and smooth power load.Meanwhile, this system has also improved the reliability of electrical network, has reduced electric energy use cost.
In the utility model, N current transformer 102 is parallel with one another, in order to make the output current at each current transformer 102 places, keep in balance, namely make total load current realize and dividing equally at each current transformer 102 places, can take following strategy: first start a current transformer and make master control current transformer, be responsible for controlling the output current of all current transformers, make the curent change of other current transformer tracing presets, thereby realize total load current dividing equally between current transformer, so also just realized dividing equally of load.For reaching this purpose, between the current transformer 102 in each current transformer subsystem, just need to there is communication connection, this annexation dots in Fig. 1.Certainly, the master control current transformer here can be selected in advance arbitrarily, or regularly transposing.
As can be seen here, the utlity model has following advantage:
(1) in the utility model, the input of direct current that the battery pack in each current transformer subsystem is current transformer, the operating state that battery control device can monitoring battery group, guarantees its safe operation.Each current transformer subsystem is parallel with one another, thereby one side has formed an energy-storage system on the former limit of net side isolating transformer, can when electrical network electricity consumption valley, store the unnecessary electric energy of electrical network, and to electrical network, carry the electric energy having stored when peak value, thereby reach the object that reduces or eliminate utilization of power peak-to-valley value, level and smooth power load.Meanwhile, this system has also improved the reliability of electrical network, has reduced electric energy use cost.
(2) in the utility model, between each current transformer, there is communication connection, can realize the balanced distribution between each current transformer of total load current, reach the object of load sharing.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (2)
1. an energy-storage system, is characterized in that, this system comprises: net side isolating transformer and N current transformer subsystem, and wherein, N is greater than 1 integer;
Described in each, current transformer subsystem comprises: current transformer, battery pack, battery control device;
Described in each, in current transformer subsystem, described current transformer is connected with described battery pack, battery control device respectively, and described battery control device is also connected with described battery pack;
After described current transformer described in each in current transformer subsystem is parallel with one another, access the former limit of described net side isolating transformer;
The secondary of described net side isolating transformer gets access to grid.
2. system according to claim 1, is characterized in that, between the described current transformer described in each in current transformer subsystem, has communication connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621215.6U CN203536973U (en) | 2013-10-09 | 2013-10-09 | Energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320621215.6U CN203536973U (en) | 2013-10-09 | 2013-10-09 | Energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536973U true CN203536973U (en) | 2014-04-09 |
Family
ID=50423149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320621215.6U Expired - Lifetime CN203536973U (en) | 2013-10-09 | 2013-10-09 | Energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536973U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450528A (en) * | 2016-11-23 | 2017-02-22 | 许继电源有限公司 | Energy storage system and method and device for controlling power balance of energy storage system |
| CN107508324A (en) * | 2017-10-12 | 2017-12-22 | 珠海汇众能源科技有限公司 | A kind of current transformer control method for parallel and system |
| CN111555322A (en) * | 2020-04-21 | 2020-08-18 | 深圳市禾望电气股份有限公司 | Energy storage system |
-
2013
- 2013-10-09 CN CN201320621215.6U patent/CN203536973U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450528A (en) * | 2016-11-23 | 2017-02-22 | 许继电源有限公司 | Energy storage system and method and device for controlling power balance of energy storage system |
| CN106450528B (en) * | 2016-11-23 | 2019-03-12 | 许继电源有限公司 | Energy-storage system and its Power balance control method and control device |
| CN107508324A (en) * | 2017-10-12 | 2017-12-22 | 珠海汇众能源科技有限公司 | A kind of current transformer control method for parallel and system |
| CN111555322A (en) * | 2020-04-21 | 2020-08-18 | 深圳市禾望电气股份有限公司 | Energy storage system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nour et al. | Impacts of plug-in electric vehicles charging on low voltage distribution network | |
| CN102916481B (en) | A kind of energy management method of direct current micro-grid system | |
| CN103427430A (en) | Hybrid energy storage system and energy management method thereof in micro-grid | |
| CN203780389U (en) | Moveable emergency power supply vehicle | |
| CN203536973U (en) | Energy storage system | |
| CN105656050A (en) | Intelligent energy storage and power distribution system | |
| Hredzak et al. | Model predictive control of a hybrid battery-ultracapacitor power source | |
| CN104297697A (en) | Distribution network power supply system for realizing online detection of inner resistance of batteries | |
| Yousefpoor et al. | Control of voltage source converter based multi-terminal DC grid under DC fault operating condition | |
| CN103580052A (en) | Compound energy storage power station for active distribution network and power distribution method of compound energy storage power station | |
| EP2954606B1 (en) | System for distributing and storing electric energy | |
| CN101728835A (en) | Battery power energy storing device for smoothing output power of wind power generation | |
| CN102163860B (en) | Quick charging system formed by super capacitor | |
| CN102457101A (en) | Battery backup supply unit | |
| CN105140947A (en) | Intelligent community micro power grid cell energy storage system | |
| CN203299290U (en) | Hybrid-energy-storage-based micro-grid technical verification platform equipment | |
| CN203339947U (en) | Switch circuit and communication power supply | |
| CN202602351U (en) | Time sharing power supply energy storage system for residence | |
| CN204741338U (en) | Lithium cell direct current system | |
| CN204258300U (en) | Supplying power allocation safeguards system | |
| CN103257299A (en) | Microgrid technical verification platform device based on hybrid energy storage | |
| CN208028584U (en) | A kind of energy-storage type energy-saving type power supply smart compensation system | |
| CN208078718U (en) | It is a kind of based on take can CT high voltage platform for electric installation | |
| CN102938580B (en) | Portable multifunctional power supply for emergency repair | |
| CN104953653A (en) | Portable self-powered direct-current power source output device for transformer substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 1406, West Tower, Yuedian Building, No. 8, Shuijungang Road, Yuexiu District, Guangzhou City, Guangdong Province, 510080 Patentee after: Lu Zhigang Patentee after: Beijing Suoying Electric Technology Co.,Ltd. Address before: 1406, West Tower, Yuedian Building, No. 8, Shuijungang Road, Yuexiu District, Guangzhou City, Guangdong Province, 510080 Patentee before: Lu Zhigang Patentee before: BEIJING SOARING ELECTRIC TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |