CN203481838U - Energy storage device for improving seasonal load power supply capability of rural power grid - Google Patents
Energy storage device for improving seasonal load power supply capability of rural power grid Download PDFInfo
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- CN203481838U CN203481838U CN201320644241.0U CN201320644241U CN203481838U CN 203481838 U CN203481838 U CN 203481838U CN 201320644241 U CN201320644241 U CN 201320644241U CN 203481838 U CN203481838 U CN 203481838U
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- lithium ion
- ion battery
- energy storage
- storage device
- power supply
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- 238000004146 energy storage Methods 0.000 title claims abstract description 42
- 230000001932 seasonal effect Effects 0.000 title abstract description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 74
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 230000001131 transforming effect Effects 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 7
- 230000009466 transformation Effects 0.000 abstract description 4
- 238000007726 management method Methods 0.000 description 20
- 238000005516 engineering process Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/14—Energy storage units
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to an energy storage device for improving a seasonal load power supply capability of a rural power grid. The energy storage device is characterized by comprising a plurality of lithium ion battery boxes; output ends of the lithium ion battery boxes are connected with a switchhouse distribution and transformation secondary side sequentially through a bi-directional converter, a three-phase four-wire dry-type transformer, and a switching switch; the lithium ion battery boxes are managed by N minor lithium ion battery management systems; the minor lithium ion battery management system is managed by one main lithium ion battery management system; and the N is a natural number. In the utility model, the following significant problems are solved: since the power grid frame structure is weak in several rural power grid regions and the electricity load rises seasonally, the line and distribution and transformation in the switchhouse become overloaded and even burned; the power supply capability cannot be guaranteed; and comprehensive transformation of the power supply facilities and the power grid frame structure is not economical.
Description
Technical field
The utility model belongs to field of distribution network, relates to power distribution automation, lithium ion battery memory technology and current transformer technology.
Background technology
Along with China's economic growth and social progress, industrial and agricultural production and people's livelihood power consumption are also increasing year by year, and need for electricity also presents diversified trend, also more and more higher to the power reguirements of power department.The many rural power grids area covering in State Grid Corporation of China, because local grid structure is weak, the guarantee of supply of electric power remains outstanding problem, particularly Urban Annual Electrical Power Consumption load factor is low, peak value electricity consumption has period or seasonal, and in the specific period, peakload is outstanding, often causes platform district circuit and distribution transforming overload, even burn, power supply capacity cannot ensure.Rural power grids user region disperses, and load density is little and regional difference large, load peak-valley difference is large, and load is seasonal and seasonal is strong, and annual maximum load utilization hours number is low.The load density of rural power load is little, is generally 10 ~ 100kw/km2, seldom surpasses 1000kw/km2.The number of working hours based on maximum load of China's agricultural power load is about 2000h, and village, the more area of township industry are about 3000h.Rural power grids have following characteristics: power transmission distance, and power transmission power is little, and transmission of electric energy is on the low side, and rural power grids facility utilization rate is low, causes the power supply cost of rural power grids higher, effectiveness of operation is on the low side.
The utilance of rural power grids converting equipment and circuit is low, power supply facilities and grid structure is carried out to modernization overlay uneconomical economically.Because of areal variation, there is seasonal difference in agriculture power mode or custom, has the complementarity in annual season.By the input of new technology, the raising to actual power ability, contributes to develop rural area or local economy, improves the utilance of electric power resource simultaneously, improves power supplying efficiency.
The important means addressing the above problem is to introduce energy storage technology.Nearly ten years, energy storage technology development is very fast, and the particularly appearance of miniature movable type energy-accumulating power station, has created necessary condition to the solution of problem.Mobile energy storage power station is owing to having mobility, according to user in different period needs for electricity and with electrical feature, Mobile energy storage power station can be in charging in low power consumption period, and discharges at the real-time requirement according to customer charge in the daytime, increases the power supply capacity in platform district as power supply.Meanwhile, utilize energy-accumulating power station have mobile flexibly, feature easy for installation on the spot, different spaces and in the time to energy storage device allotment, the object that reaches resource consolidation and make full use of.The introducing in Mobile energy storage power station, for the power supply capacity of improving rural power grids area, has obvious realistic meaning.
In recent years, battery energy storage technology and current transformer technology have obtained rapid progress, the energy density of lithium ion battery is large, charge and discharge cycles number of times is high, along with unit capacity price continuous decrease, lithium ion battery replaces the speed of lead-acid battery and Ni-MH battery to be accelerated, become gradually main flow, for the energy storage device based on lithium ion battery has been established solid foundation in the application of electric power system.
Utility model content
The purpose of this utility model is in order to solve because ground, part rural power grids area grid structure is weak, seasonal steep increasing of power load, often cause platform district circuit and distribution transforming overload, even burn, power supply capacity cannot ensure, power supply facilities and grid structure are carried out to modernization overlay non-remunerative outstanding problem economically.
Device of the present utility model adopts following scheme to realize: a kind of raising is to rural power grids seaonal load power supply capacity energy storage device, it is characterized in that: comprise several lithium ion battery casees, the output of described lithium ion battery case connects through two way convertor, three-phase four-wire system dry-type transformer, diverter switch Yu Tai district distribution transforming secondary side successively; Described lithium ion battery case divides management system management by N lithium ion battery, and described lithium ion battery minute management system is managed by a lithium ion battery system total management again, and wherein N is natural number.
In the utility model one embodiment, after 17 series connection of described lithium ion battery case, by a lithium ion battery, divide management system management.
In the utility model one embodiment, described two way convertor is provided with current transformer supervisory control system.
In the utility model one embodiment, also comprise lithium ion battery supervisory control system and Mobile energy storage device monitoring and control system; Described lithium ion battery supervisory control system is connected with described lithium ion battery system total management through bus; Described lithium ion battery supervisory control system, Mobile energy storage device monitoring and control system and current transformer supervisory control system realize mutual communication by local area network (LAN).
In the utility model one embodiment, described lithium ion battery minute management system is to be connected by bus with described lithium ion battery case.
The utility model can be widely used in seasonal steep increasing of agriculture electricity consumption, the confession radio area that power supply capacity cannot ensure, utilize the seasonal difference of all kinds of seaonal loads, the seasonal otherness of seaonal loads such as tea making load, flue-cured tobacco, roasted peanut, mutually adjust and use portable lithium ion battery energy storage device, improve the operational efficiency of platform district distribution transforming and to seaonal load power supply capacity.
Accompanying drawing explanation
Fig. 1 is portable lithium-ion energy storage device wiring schematic diagram of the present utility model.
Fig. 2 is portable lithium-ion energy storage device assess station of the present utility model district schematic diagram.
Fig. 3 is the power dispatching schematic diagram that portable lithium-ion energy storage device of the present utility model improves power supply capacity.
BMU in figure: lithium ion battery administrative unit; DBMS: lithium ion battery divides management system; CBMS: lithium ion battery system total management; PCSSCS: current transformer supervisory control system; BSSCS: lithium ion battery supervisory control system; CSCS: Mobile energy storage device monitoring and control system.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Please refer to Fig. 1, the present embodiment provides a kind of raising to rural power grids seaonal load power supply capacity energy storage device, it is characterized in that: comprise several lithium ion battery casees, the output of described lithium ion battery case connects through two way convertor, three-phase four-wire system dry-type transformer, diverter switch Yu Tai district distribution transforming secondary side successively; Described lithium ion battery case divides management system management by N lithium ion battery, and described lithium ion battery minute management system is managed by a lithium ion battery system total management again, and wherein N is natural number.
In the utility model one embodiment, after 17 series connection of described lithium ion battery case, by a lithium ion battery, divide management system management.Described lithium ion battery minute management system is to be connected by bus with described lithium ion battery case.Continue referring to Fig. 1, in figure, described two way convertor is provided with current transformer supervisory control system.This device also comprises lithium ion battery supervisory control system and Mobile energy storage device monitoring and control system; Described lithium ion battery supervisory control system is connected with described lithium ion battery system total management through bus; Described lithium ion battery supervisory control system, Mobile energy storage device monitoring and control system and current transformer supervisory control system realize mutual communication by local area network (LAN).
In order to allow those skilled in the art better understand composition of the present utility model, below formation of the present utility model is illustrated by step:
1) for improving seaonal load power supply capacity, provide a kind of based on portable lithium ion battery energy storage device solution.According to the temporal aspect of the agriculture power load of seasonality, load density and platform district capacity of distribution transform, choose power and the capacity of portable lithium ion battery energy storage device;
2) mobile battery energy storage device adopts lithium ion battery as storage medium;
3), according to the design capacity of the volumetric specific energy of lithium ion battery, gravimetric specific energy, mobile battery energy storage device, two-way alternating current-direct current current transformer weight and size, portable lithium ion battery energy storage device is integrated in the portable compartment of many covers envelope;
4) monomer lithium ion battery is connected in series in groups, adopts distribution management method monitoring running state of lithium ion battery;
5), by static switch, can switch flexibly the mode of operation of portable lithium ion battery energy storage device;
6) lithium ion battery after being connected in series is in groups connected to two-way alternating current-direct current current transformer, then by three-phase four-wire system dry-type transformer and switch cubicle, is connected to the secondary side of platform district distribution transforming;
7) workload demand beyond portable lithium ion battery energy storage device compensation platform district distribution transforming power supply capacity, improves the operational efficiency of platform district distribution transforming and to seaonal load power supply capacity.
Please refer to Fig. 2, Fig. 2 is portable lithium-ion energy storage device assess station district schematic diagram, in Fig. 2, by measuring distribution transforming Injection Current and the magnitude of voltage of platform district distribution transforming secondary side, calculates the real-time input power of putting into effect district's distribution transforming.Fig. 3 is the power dispatching schematic diagram that Mobile energy storage device improves power supply capacity; In Tu3Zhong，Tai district distribution transforming power supply capacity, be 100kW, and the maximum of power load approach 180kW, cannot meet the seasonal electricity consumption of steep increasing only according to the distribution transforming of platform district.By measuring the real-time input power of platform district distribution transforming, dispatch exerting oneself of portable lithium-ion energy storage device, the input power of Jiang Tai district distribution transforming is controlled at below 100kW and 80kW left and right, and then improve the operational efficiency of platform district distribution transforming and to seaonal load power supply capacity, avoid platform district distribution transforming overload and burn.
The utility model is formed in portable compartment by compact sets such as lithium ion battery, battery management system, two-way alternating current-direct current current transformer, Mobile energy storage supervisory control system, switch cubicles.In agriculture electricity consumption, suddenly increase season, allotment flexibly, portable lithium ion battery energy storage device is connected to platform district distribution transforming secondary side, workload demand beyond compensation platform district distribution transforming power supply capacity, improve the operational efficiency of platform district distribution transforming and to seaonal load power supply capacity, avoid power supply facilities and grid structure to carry out complete upgrading transformation, there is significant economic benefit.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (5)
1. a raising is to rural power grids seaonal load power supply capacity energy storage device, it is characterized in that: comprise several lithium ion battery casees, the output of described lithium ion battery case connects through two way convertor, three-phase four-wire system dry-type transformer, diverter switch Yu Tai district distribution transforming secondary side successively; Described lithium ion battery case divides management system management by N lithium ion battery, and described lithium ion battery minute management system is managed by a lithium ion battery system total management again, and wherein N is natural number.
2. raising according to claim 1, to rural power grids seaonal load power supply capacity energy storage device, is characterized in that: after 17 series connection of described lithium ion battery case, by a lithium ion battery, divide management system management.
3. raising according to claim 1, to rural power grids seaonal load power supply capacity energy storage device, is characterized in that: described two way convertor is provided with current transformer supervisory control system.
4. raising according to claim 3, to rural power grids seaonal load power supply capacity energy storage device, is characterized in that: also comprise lithium ion battery supervisory control system and Mobile energy storage device monitoring and control system; Described lithium ion battery supervisory control system is connected with described lithium ion battery system total management through bus; Described lithium ion battery supervisory control system, Mobile energy storage device monitoring and control system and current transformer supervisory control system realize mutual communication by local area network (LAN).
5. raising according to claim 1, to rural power grids seaonal load power supply capacity energy storage device, is characterized in that: described lithium ion battery minute management system is to be connected by bus with described lithium ion battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644241.0U CN203481838U (en) | 2013-10-18 | 2013-10-18 | Energy storage device for improving seasonal load power supply capability of rural power grid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644241.0U CN203481838U (en) | 2013-10-18 | 2013-10-18 | Energy storage device for improving seasonal load power supply capability of rural power grid |
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| CN203481838U true CN203481838U (en) | 2014-03-12 |
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| CN201320644241.0U Expired - Fee Related CN203481838U (en) | 2013-10-18 | 2013-10-18 | Energy storage device for improving seasonal load power supply capability of rural power grid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515973A (en) * | 2013-10-18 | 2014-01-15 | 国家电网公司 | Energy storage device for improving seasonal load power supply capacity on rural power grid and manufacture method of energy storage device |
| CN106208367A (en) * | 2015-05-26 | 2016-12-07 | Aes有限公司 | Modularity energy storage method and system |
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2013
- 2013-10-18 CN CN201320644241.0U patent/CN203481838U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103515973A (en) * | 2013-10-18 | 2014-01-15 | 国家电网公司 | Energy storage device for improving seasonal load power supply capacity on rural power grid and manufacture method of energy storage device |
| CN106208367A (en) * | 2015-05-26 | 2016-12-07 | Aes有限公司 | Modularity energy storage method and system |
| CN106208367B (en) * | 2015-05-26 | 2021-11-02 | Aes有限公司 | Modular energy storage method and system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20201018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |