CN114123157A - Electric pile is filled in flexible interconnection of distributing type and energy storage integration - Google Patents
Electric pile is filled in flexible interconnection of distributing type and energy storage integration Download PDFInfo
- Publication number
- CN114123157A CN114123157A CN202111332065.2A CN202111332065A CN114123157A CN 114123157 A CN114123157 A CN 114123157A CN 202111332065 A CN202111332065 A CN 202111332065A CN 114123157 A CN114123157 A CN 114123157A
- Authority
- CN
- China
- Prior art keywords
- direct current
- power conversion
- conversion module
- energy storage
- bus
- 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.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 49
- 230000010354 integration Effects 0.000 title claims description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 104
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 26
- 238000012546 transfer Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
- H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
-
- 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
- H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
-
- 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
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
The invention discloses a distributed flexible interconnection and energy storage integrated charging pile in the technical field of charging piles, which comprises: the AC-DC power conversion module is characterized in that an AC side port of the AC-DC power conversion module is connected with a distribution transformer of a transformer area through an AC electrical interface, and a DC side port of the AC-DC power conversion module is connected with an extended DC bus; the first direct current side port of the isolated bidirectional direct current power conversion module is connected with an expanded direct current bus, and the second direct current side port of the isolated bidirectional direct current power conversion module is connected with a variable voltage direct current bus; the extended direct current bus is connected with the platform area direct current bus through a direct current bus interface; the non-isolated unidirectional direct current power conversion module is characterized in that a first direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a variable voltage direct current bus, and a second direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a charging gun; and the energy storage module is connected with the variable-voltage direct-current bus. The invention can reduce the floor area of the equipment, improve the system efficiency and reduce the system construction and operation and maintenance cost.
Description
Technical Field
The invention belongs to the technical field of charging piles, and particularly relates to a distributed flexible interconnection and energy storage integrated charging pile.
Background
At present, service requirements such as flexible interconnection, energy storage, photovoltaic access and direct-current charging of an electric automobile exist in a distribution area, a flexible interconnection device in the distribution area, an energy storage device in the distribution area, a photovoltaic system in the distribution area and a direct-current charging function device of the electric automobile are respectively installed to solve the service requirements, and the problems that in the prior art, the occupied area of equipment is large, an additional cooperative control system needs to be installed, the comprehensive efficiency of the system is low, and the construction and operation and maintenance cost of the system equipment is high exist.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the distributed flexible interconnection and energy storage integrated charging pile which can reduce the floor area of equipment, improve the system efficiency and reduce the system construction and operation and maintenance costs.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: electric pile is filled in flexible interconnection of distributing type and energy storage integration includes: the AC-DC power conversion module is characterized in that an AC side port of the AC-DC power conversion module is connected with a distribution transformer of a transformer area through an AC electrical interface, and a DC side port of the AC-DC power conversion module is connected with an extended DC bus; the first direct current side port of the isolated bidirectional direct current power conversion module is connected with an expanded direct current bus, and the second direct current side port of the isolated bidirectional direct current power conversion module is connected with a variable voltage direct current bus; the extended direct current bus is connected with the platform area direct current bus through a direct current bus interface; the non-isolated unidirectional direct current power conversion module is characterized in that a first direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a variable voltage direct current bus, and a second direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a charging gun; and the energy storage module is connected with the variable-voltage direct-current bus.
Furthermore, the alternating current-direct current power conversion module has two, and the alternating current side ports of the two alternating current-direct current power conversion modules are respectively connected with different distribution transformers in the transformer area through an alternating current electrical interface.
Further, fill electric pile and satisfy: PT < = min (PA, PB); PC < = (PA + PB); PD < = PC + ped (soc); wherein PT represents the maximum flexible interconnection power, PA represents the rated power of one of the ac/dc power conversion modules, PB represents the rated power of the other ac/dc power conversion module, PC represents the rated power of the isolated bidirectional dc power conversion module, PD represents the rated power of the non-isolated unidirectional dc power conversion module, and ped (soc) represents the maximum discharge power of the energy storage module.
Further, the alternating current-direct current power conversion module can form a flexible interconnection device of the transformer area, and power transfer between the transformer areas is achieved.
Further, the alternating current-direct current power conversion module, the isolated bidirectional direct current power conversion module and the energy storage module form a transformer area energy storage system, and electric energy from a power grid and/or electric energy produced by a photovoltaic system connected to the first direct current side port and the extended direct current bus are stored and released to the power grid and/or the charging port.
Furthermore, the alternating current-direct current power conversion module, the isolated bidirectional direct current power conversion module and the non-isolated unidirectional direct current power conversion module form an electric vehicle charging system, and electric energy from a power grid and/or electric energy generated by a photovoltaic system connected to the first direct current side port and connected to the extended direct current bus and/or electric energy released by the energy storage module are supplied to the electric vehicle.
Compared with the prior art, the invention has the following beneficial effects: the invention connects the extended DC bus and the transformer voltage DC bus through the isolated bidirectional DC power conversion module by the AC/DC power conversion module transformer and the extended DC bus, the extended DC bus is connected with the transformer voltage DC bus through the DC bus interface, the non-isolated unidirectional DC power conversion module is connected with a variable voltage DC bus and a charging gun, and the energy storage module is connected with the variable voltage DC bus, so that the functions of flexible interconnection of transformer areas, energy storage of transformer areas, photovoltaic access of transformer areas, DC charging of electric vehicles and the like are integrated together, an integrated modularized charging pile with flexible interconnection, PEG energy storage and distributed photovoltaic flexible access absorption capacity is constructed by taking a high-power direct-current charging pile as a carrier, based on the operating characteristics of a system, by multiplexing the power supply equipment, the occupied area of the equipment is reduced, the system efficiency is improved, and the system construction and operation and maintenance cost is reduced.
Drawings
Fig. 1 is an electrical topology schematic diagram of a distributed flexible interconnection and energy storage integrated charging pile provided in an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a stake is filled in distributed flexible interconnection and energy storage integration includes: the first alternating current electrical interface 101 and the second alternating current electrical interface 102 are used for being connected with distribution transformers under two different lines.
And the direct current bus interface 103 is used for connecting with the output of the photovoltaic converter.
And the charging gun 104 is used for connecting with the electric automobile coupler and charging the electric automobile.
The first ac/dc power conversion module 201 and the second ac/dc power conversion module 202 are used for realizing electric energy conversion and power transmission between the ac transformer area and the dc bus.
And the extended direct-current bus 302 is used for connecting the first alternating-current/direct-current power conversion module 201, the second alternating-current/direct-current power conversion module 202 and the direct-current bus interface 103 in equipment.
The isolated bidirectional direct-current power conversion module 203 is used for realizing electric energy conversion and power transmission between the extended direct-current bus 302 and the variable-voltage direct-current bus 301.
The variable-voltage direct-current bus 301 is used for connecting the isolated bidirectional direct-current power conversion module 203, the energy storage module 205 and the non-isolated unidirectional direct-current power conversion module 204 in the equipment.
The energy storage module 205 is used for storing the photovoltaic generated electric energy accessed from the direct current bus interface 103 and the electric energy accessed from the first alternating current electrical interface 101 and the second alternating current electrical interface 102 to the alternating current distribution network, providing the electric automobile with the electric energy through the non-isolated unidirectional direct current power conversion module 204 and the charging gun 104, and feeding the electric energy to the alternating current distribution network through the isolated bidirectional direct current power conversion module 203, the first alternating current electrical interface 101 and the second alternating current electrical interface 102.
The non-isolated unidirectional dc power conversion module 204 is used for charging the electric vehicle through the charging gun 104.
The first alternating current electrical interface 101 is connected with an alternating current side port of the first alternating current-direct current power conversion module 201, the second alternating current electrical interface 102 is connected with an alternating current side port of the second alternating current-direct current power conversion module 202, a direct current side port of the first alternating current-direct current power conversion module 201 is connected with an extended direct current bus 302, a direct current side port of the second alternating current-direct current power conversion module 202 is connected with the extended direct current bus 302, a direct current bus interface 103 is connected with the extended direct current bus 302, a first direct current side port of the isolated bidirectional direct current power conversion module 203 is connected with the extended direct current bus 302, a second direct current side port of the isolated bidirectional direct current power conversion module 203 is connected with a variable voltage direct current bus 301, the variable voltage direct current bus 301 is connected with a first direct current side interface of the non-isolated unidirectional direct current power conversion module 204, and the variable voltage direct current bus 301 is connected with the energy storage module 205, the second dc interface of the non-isolated unidirectional dc power conversion module 204 is connected to the charging gun 104.
The first alternating current electrical interface 101 and the second alternating current electrical interface 102 are respectively connected with feeders of a distribution transformer A and a distribution transformer B which need to be flexibly interconnected in a transformer area, and the direct current bus interface 103 is connected with a direct current bus of the transformer area and is generally connected with a charging pile and the like of photovoltaic, energy storage and direct current power supply.
The maximum flexible interconnection power that can be provided by this embodiment is PT, the rated power of the first ac/dc power conversion module 201 is PA, the rated power of the second ac/dc power conversion module 202 is PB, the rated power of the isolated bidirectional dc power conversion module 203 is PC, the rated power of the non-isolated unidirectional dc power conversion module 204 is PD, the maximum charging power PEC of the energy storage module 205, the maximum discharging power of the energy storage module 205 is PED, and PEC and PED are functions of the SOC of the energy storage module 205.
The present embodiment needs to satisfy:
PT is not higher than the minimum value of PA and PB, namely PT < = min (PA, PB);
PC power is not greater than the sum of PA and PB power, namely PC < = (PA + PB);
PD is not higher than the sum of the maximum values of PC and PED, namely PD < = PC + PED (SOC).
In this embodiment, the flexible interconnection power is Pt, the input power of the dc bus interface 103 is Pf, the operating power of the first ac/dc power conversion module 201 is Pa, the operating power of the second ac/dc power conversion module 202 is Pb, the operating power of the isolated bidirectional dc power conversion module 203 is Pc, the operating power of the non-isolated unidirectional dc power conversion module 204 is Pd, the charging power of the energy storage module 205 is Pec, and the discharging power is Ped;
the first working scene is as follows:
the charging gun 104 is idle, Pt >0, Pf >0, SOC of the energy storage module 205 is < 95%;
Pb=-Pt，Pc=min（PC，PA-Pt+Pf，PEC（SOC）），Pa=Pt+Pc-Pf，Pec=Pc。
a second working scene:
the charging gun 104 is idle, Pt <0, Pf >0, SOC of the energy storage module 205 is < 95%;
Pa=Pt，Pc=min（PC，PB+Pt+Pf，PEC（SOC）），Pb=-Pt+Pc-Pf，Pec=Pc。
a third working scene:
Pa=Pt+Pd，Pb=-Pt，Pc=Pd，Pec=0。
working scene four:
Pa=Pt，Pb=-Pt+Pd，Pc=Pd，Pec=0。
a working scene five:
the charging gun 104 is charged, Pt is greater than 0, Pf is greater than 0, Pd is greater than min (PC, PA-Pt + Pf), and the SOC of the energy storage module 205 is greater than 20%;
Pa=Pt，Pb=PB，Pc= min（PC，PA-Pt+pf），Ped=Pd-Pc。
working scene six:
the charging gun 104 is charged, Pt <0, Pf >0, Pd > min (PC, PA-Pt + Pf), and the SOC of the energy storage module 205 is more than 20%;
Pa=PA，Pb=-Pt，Pc= min（PC，PA-Pt+pf），Ped=Pd-Pc。
in this embodiment, the distribution transformer of the transformer substation is connected to the extended dc bus through the first ac/dc power conversion module 201 and the second ac/dc power conversion module 202, the extended dc bus 302 is connected to the variable voltage dc bus 301 through the isolated bidirectional dc power conversion module 203, the extended dc bus 302 is connected to the transformer substation dc bus through the dc bus interface 103, the variable voltage dc bus 301 and the charging gun 104 are connected through the non-isolated unidirectional dc power conversion module 204, and the energy storage module 205 is connected to the variable voltage dc bus 301. The method comprises the steps of flexibly interconnecting a platform area formed by a first AC/DC power conversion module 201 and a second AC/DC power conversion module 202, storing energy in the platform area formed by the first AC/DC power conversion module 201, the second AC/DC power conversion module 202, an isolated bidirectional DC power conversion module 203 and an energy storage module 205, integrating the photovoltaic access of the platform area formed by the first AC/DC power conversion module 201, the second AC/DC power conversion module 202 and a DC bus interface 103 with the functions of DC charging and the like of an electric vehicle formed by the first AC/DC power conversion module 201, the second AC/DC power conversion module 202, the isolated bidirectional DC power conversion module 203, a non-isolated unidirectional DC power conversion module 204 and a charging gun 104, constructing an integrated modular charging pile with flexible interconnection, PEG energy storage and distributed photovoltaic flexible access absorption capabilities by taking high-power DC as a carrier, based on the system operation characteristics, the device floor area is reduced, the system efficiency is improved, and the system construction and operation and maintenance cost is reduced by multiplexing power supply devices.
The 120kW integrated charging pile design parameters are given simultaneously in the embodiment as follows:
the first AC-DC power conversion module 201 and the second AC-DC power conversion module 202 both use 30kW T-type three-level AC/DC modules, whose AC-side rated voltage is 380Vac, whose DC-side rated voltage is 750Vdc, and whose average load efficiency is 98% for more than 50%, PA =30kW, PB =30 kW;
the isolated bidirectional direct-current power conversion module 203 selects 20kW DAB topological modules 3 for parallel current sharing, the rated voltage of a first direct-current side port is 750Vdc, the voltage variation range of a second direct-current side port is 600Vdc-900Vdc, the average efficiency of the module is more than 50% of load is 98%, and PC =60 kW;
a direct current bus interface 103 is connected to 750Vdc grid-connected photovoltaic 10 kW;
the energy storage module 205 is a lithium iron phosphate battery module with a 2C charge-discharge rate, the capacity is 30.72kWh, and the module is formed by connecting 240 40Ah battery cores in series;
the non-isolated unidirectional direct current power conversion module 204 adopts a 120kW unidirectional Buck topology module, the first direct current side voltage of the module works within a range of 600V-900V, and the second direct current side voltage of the module works within a range of 200V-600V.
The first working scene is as follows:
pt =20kW, Pd =0kW, Pf =10kW, SOC of 205 = 30%;
Pa=30kW，Pb=-20kW，Pc=30kW，Pec=30kW。
a second working scene:
pt = -20kW, Pd =0kW, Pf =10kW, SOC of 205 = 95%;
Pa=-20kW，Pb=10kW，Pc=0kW，Pec=0kW。
a third working scene:
Pt=10kW，Pd=25kW，Pf=10kW；
Pa=25kW，Pb=10kW，Pc=25kW，Pec=0kW。
working scene four:
pt =20kW, Pd =25kW, Pf =0kW, SOC of 205 = 95%;
Pa=30kW，Pb=20kW，Pc=10kW，Ped=15kW。
in this embodiment, 2 ac/dc power conversion modules connected to different distribution transformers in a distribution area may form a flexible interconnection device in the distribution area, so as to realize power transfer between distribution areas. And 2 alternating current-direct current power conversion modules, an isolated bidirectional direct current power conversion module and an energy storage module which are connected with distribution transformers in different transformer areas form a transformer area energy storage system, so that electric energy from a power grid and/or electric energy produced by a photovoltaic system connected to the first direct current side port and the extended direct current bus can be stored and released to the power grid and/or a charging port. And 2 alternating current-direct current power conversion modules, an isolated bidirectional direct current power conversion module and a non-isolated unidirectional direct current power conversion module which are connected with distribution transformers in different transformer areas can form an electric vehicle charging system, and electric energy from a power grid and/or electric energy produced by a photovoltaic system connected to the first direct current side port and the extended direct current bus and/or electric energy released by the energy storage module are supplied to the electric vehicle.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. Electric pile is filled in flexible interconnection of distributing type and energy storage integration, its characterized in that includes:
the AC-DC power conversion module is characterized in that an AC side port of the AC-DC power conversion module is connected with a distribution transformer of a transformer area through an AC electrical interface, and a DC side port of the AC-DC power conversion module is connected with an extended DC bus;
the first direct current side port of the isolated bidirectional direct current power conversion module is connected with an expanded direct current bus, and the second direct current side port of the isolated bidirectional direct current power conversion module is connected with a variable voltage direct current bus;
the extended direct current bus is connected with the platform area direct current bus through a direct current bus interface;
the non-isolated unidirectional direct current power conversion module is characterized in that a first direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a variable voltage direct current bus, and a second direct current side port of the non-isolated unidirectional direct current power conversion module is connected with a charging gun;
and the energy storage module is connected with the variable-voltage direct-current bus.
2. The distributed flexible interconnection and energy storage integrated charging pile according to claim 1, wherein the number of the alternating current/direct current power conversion modules is two, and alternating current side ports of the two alternating current/direct current power conversion modules are respectively connected with different distribution transformers in a distribution area through an alternating current electrical interface.
3. The electric pile is filled with integration of flexible interconnection of distributed type and energy storage according to claim 2, characterized in that, fill electric pile and satisfy:
PT<=min(PA，PB)；
PC<=(PA+PB)；
PD<=PC+ PED（SOC）；
wherein PT represents the maximum flexible interconnection power, PA represents the rated power of one of the ac/dc power conversion modules, PB represents the rated power of the other ac/dc power conversion module, PC represents the rated power of the isolated bidirectional dc power conversion module, PD represents the rated power of the non-isolated unidirectional dc power conversion module, and ped (soc) represents the maximum discharge power of the energy storage module.
4. The distributed flexible interconnection and energy storage integrated charging pile according to claim 2 or 3, wherein the alternating current-direct current power conversion module can form a flexible interconnection device for transformer areas, so that power transfer between transformer areas is realized.
5. The distributed flexible interconnection and energy storage integrated charging pile according to claim 2 or 3, wherein the alternating current/direct current power conversion module, the isolated bidirectional direct current power conversion module and the energy storage module form a platform energy storage system, and the electric energy from the power grid and/or the electric energy produced by the photovoltaic system connected to the first direct current side port connection expansion direct current bus are stored and released to the power grid and/or the charging port.
6. The distributed flexible interconnection and energy storage integrated charging pile according to claim 2 or 3, wherein the alternating current-direct current power conversion module, the isolated bidirectional direct current power conversion module and the non-isolated unidirectional direct current power conversion module form an electric vehicle charging system, and electric energy from a power grid and/or electric energy produced by a photovoltaic system connected to the first direct current side port connection expansion direct current bus and/or electric energy released by the energy storage module are supplied to an electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111332065.2A CN114123157A (en) | 2021-11-11 | 2021-11-11 | Electric pile is filled in flexible interconnection of distributing type and energy storage integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111332065.2A CN114123157A (en) | 2021-11-11 | 2021-11-11 | Electric pile is filled in flexible interconnection of distributing type and energy storage integration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114123157A true CN114123157A (en) | 2022-03-01 |
Family
ID=80378408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111332065.2A Pending CN114123157A (en) | 2021-11-11 | 2021-11-11 | Electric pile is filled in flexible interconnection of distributing type and energy storage integration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114123157A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811453A (en) * | 2016-03-14 | 2016-07-27 | 贵州电网有限责任公司电力科学研究院 | Distributed energy intelligent access system and access method thereof |
| CN105896623A (en) * | 2016-06-08 | 2016-08-24 | 国网辽宁省电力有限公司电力科学研究院 | AC/DC hybrid power distribution system based on multi-terminal flexible DC power transmission technology |
| CN106505644A (en) * | 2016-12-16 | 2017-03-15 | 北京索英电气技术有限公司 | Integral system is filled in a kind of light storage based on double-bus microgrid framework |
| CN107453440A (en) * | 2017-09-13 | 2017-12-08 | 国网重庆市电力公司电力科学研究院 | A kind of charging device based on electric power electric transformer |
| CN110450667A (en) * | 2019-07-29 | 2019-11-15 | 深圳英飞源技术有限公司 | A kind of energy storage charging pile |
| CN110474356A (en) * | 2019-09-15 | 2019-11-19 | 长园深瑞继保自动化有限公司 | Storage integrated method and system are filled based on multiplexing bidirectional DC/DC converter |
| CN110626203A (en) * | 2019-10-18 | 2019-12-31 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
| CN110803051A (en) * | 2019-11-28 | 2020-02-18 | 南京米特能源科技有限公司 | Energy storage type charging pile and charging system |
| CN111137152A (en) * | 2019-12-23 | 2020-05-12 | 国网浙江省电力有限公司杭州供电公司 | Direct-current charging pile and flexible expansion method thereof |
| CN111404248A (en) * | 2018-12-28 | 2020-07-10 | 天津银隆新能源有限公司 | Micro-grid system and method based on coupling of fuel cell test and charging pile |
-
2021
- 2021-11-11 CN CN202111332065.2A patent/CN114123157A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811453A (en) * | 2016-03-14 | 2016-07-27 | 贵州电网有限责任公司电力科学研究院 | Distributed energy intelligent access system and access method thereof |
| CN105896623A (en) * | 2016-06-08 | 2016-08-24 | 国网辽宁省电力有限公司电力科学研究院 | AC/DC hybrid power distribution system based on multi-terminal flexible DC power transmission technology |
| CN106505644A (en) * | 2016-12-16 | 2017-03-15 | 北京索英电气技术有限公司 | Integral system is filled in a kind of light storage based on double-bus microgrid framework |
| CN107453440A (en) * | 2017-09-13 | 2017-12-08 | 国网重庆市电力公司电力科学研究院 | A kind of charging device based on electric power electric transformer |
| CN111404248A (en) * | 2018-12-28 | 2020-07-10 | 天津银隆新能源有限公司 | Micro-grid system and method based on coupling of fuel cell test and charging pile |
| CN110450667A (en) * | 2019-07-29 | 2019-11-15 | 深圳英飞源技术有限公司 | A kind of energy storage charging pile |
| CN110474356A (en) * | 2019-09-15 | 2019-11-19 | 长园深瑞继保自动化有限公司 | Storage integrated method and system are filled based on multiplexing bidirectional DC/DC converter |
| CN110626203A (en) * | 2019-10-18 | 2019-12-31 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
| CN110803051A (en) * | 2019-11-28 | 2020-02-18 | 南京米特能源科技有限公司 | Energy storage type charging pile and charging system |
| CN111137152A (en) * | 2019-12-23 | 2020-05-12 | 国网浙江省电力有限公司杭州供电公司 | Direct-current charging pile and flexible expansion method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104505867B (en) | Alternating current and direct current hybrid micro-grid system and control strategy thereof | |
| JP5843624B2 (en) | Power conversion system for grid connection | |
| KR101836230B1 (en) | System and method ofoperating variable voltage for DC micro-grid | |
| US20220200314A1 (en) | Energy storage system | |
| WO2021017508A1 (en) | Energy storage charging pile | |
| WO2020216016A1 (en) | Energy storage charging system | |
| CN209913565U (en) | Common direct current bus photovoltaic energy storage and charging integrated system | |
| WO2021073049A1 (en) | Centralized energy storage charging pile | |
| CN106976433B (en) | A kind of vehicle intelligent power supply system | |
| CN102624030A (en) | Photovoltaic/storage battery mixed type current inverter-based distributed generation system | |
| CN112793450A (en) | Can return to accuse electricity intelligent charging stake | |
| CN202616801U (en) | Photovoltaic/ storage-battery hybrid distribution-type power generation system based on current inverter | |
| CN112510803B (en) | Single-channel module of airplane distributed power grid structure, power generation system and control method | |
| CN205992764U (en) | Charging device and portable charging case | |
| CN210468814U (en) | Charging and storing integrated device based on multiplexing bidirectional DCDC converter | |
| CN209929995U (en) | Energy storage charging system | |
| CN217804367U (en) | Charging pile system and charging system of battery replacement station | |
| CN215580399U (en) | Charging system using energy storage multiplication | |
| CN114123157A (en) | Electric pile is filled in flexible interconnection of distributing type and energy storage integration | |
| CN112803445B (en) | Wind storage system and control method thereof | |
| CN216390524U (en) | Light storage and charging integrated system with adjustable power | |
| KR101216703B1 (en) | Eco-friendly electric vehicle charging system | |
| CN214154035U (en) | Energy station of mixed network deployment | |
| CN216436820U (en) | Inverter direct-current side coupling energy storage system | |
| CN219277775U (en) | Ship hybrid power system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |