CN112909971A - Light storage and charging system and operation method - Google Patents
Light storage and charging system and operation method Download PDFInfo
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- CN112909971A CN112909971A CN202110080940.6A CN202110080940A CN112909971A CN 112909971 A CN112909971 A CN 112909971A CN 202110080940 A CN202110080940 A CN 202110080940A CN 112909971 A CN112909971 A CN 112909971A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004146 energy storage Methods 0.000 claims abstract description 102
- 238000010248 power generation Methods 0.000 claims abstract description 63
- 230000005611 electricity Effects 0.000 claims description 6
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/51—Photovoltaic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/50—Charging stations characterised by energy-storage or power-generation means
- B60L53/53—Batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/63—Monitoring or controlling charging stations in response to network capacity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- 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
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/10—Flexible AC transmission systems [FACTS]
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Abstract
The invention provides a light storage and charging system and an operation method in the technical field of electric automobiles, wherein the system comprises: an AC distribution cabinet; the old alternating current charging pile is connected with the alternating current power distribution cabinet; the charging pile controller is connected with the alternating current power distribution cabinet and the old alternating current charging pile; at least one new AC charging pile connected with the charging pile controller; the alternating current photovoltaic power generation system is connected with the old alternating current charging pile and the charging pile controller; the energy storage converter is connected with the alternating current power distribution cabinet, the old alternating current charging pile, the charging pile controller and the alternating current photovoltaic power generation system; the battery energy storage system is connected with the energy storage converter; and the energy management system is respectively connected with the alternating current power distribution cabinet, the charging pile controller, the old alternating current charging pile, the new alternating current charging pile, the alternating current photovoltaic power generation system, the energy storage converter and the battery energy storage system. The invention has the advantages that: on the premise of not increasing the pressure of the power distribution network, the output power is greatly improved.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a light storage and charging system and an operation method.
Background
Along with the rapid increase of electric automobile stock, electric automobile's the demand of charging is also growing rapidly, and the electric pile quantity that fills in parking area, market, charging station and the residential quarter can't satisfy electric automobile's demand of charging gradually.
If the number of charging piles is further increased in an original site, the pressure of a power distribution network is increased, and meanwhile, the original distribution line needs to be modified; in addition, in areas with dense population and large charging demands, the power distribution capacity of a power grid is limited, the transformation is difficult, and the instability of a local power grid can be caused by simply increasing charging piles; in some old districts, the power distribution capacity of the power grid even reaches the upper limit, and the quantity of the charging piles cannot be increased continuously.
Therefore, how to provide an optical storage and charging system and an operation method thereof to achieve the purpose of improving the output power on the premise of not increasing the pressure of the power distribution network becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide an optical storage and charging system and an operation method thereof, which can improve the output power on the premise of not increasing the pressure of a power distribution network.
In a first aspect, the present invention provides a light charging and storage system comprising:
an AC distribution cabinet;
the old alternating current charging pile is connected with the alternating current power distribution cabinet;
the charging pile controller is connected with the alternating current power distribution cabinet and the old alternating current charging pile;
at least one new AC charging pile connected with the charging pile controller;
the alternating current photovoltaic power generation system is connected with the old alternating current charging pile and the charging pile controller;
the energy storage converter is connected with the alternating current power distribution cabinet, the old alternating current charging pile, the charging pile controller and the alternating current photovoltaic power generation system;
a battery energy storage system connected with the energy storage converter;
and the energy management system is respectively connected with the alternating current power distribution cabinet, the charging pile controller, the old alternating current charging pile, the new alternating current charging pile, the alternating current photovoltaic power generation system, the energy storage converter and the battery energy storage system.
Further, the alternating current photovoltaic power generation system includes:
the photovoltaic controllers are respectively connected with the old traffic charging pile, the charging pile controller and the energy management system;
and the photovoltaic module is connected with the photovoltaic controller.
Further, the battery energy storage system includes:
the BMS is respectively connected with the energy storage converter and the energy management system;
and the lithium iron phosphate batteries are respectively connected with the BMS and the energy storage converter.
Furthermore, the alternating current power distribution cabinet is provided with an alternating current bidirectional metering ammeter.
Further, still include:
a UPS coupled to the energy management system.
In a second aspect, the present invention provides a method for operating a light storage and charging system, comprising the steps of:
step S10, limiting the highest power output by the AC power distribution cabinet by the energy management system;
step S20, each electric automobile is connected with an old traffic charging pile or a new traffic charging pile;
step S30, performing real-time interaction between the old traffic charging pile or the new traffic charging pile and the electric automobile, acquiring charging parameters of the electric automobile and sending the charging parameters to the energy management system;
step S40, the energy management system creates a peak clipping and valley filling strategy, and controls an alternating current power distribution cabinet, an alternating current photovoltaic power generation system or a battery energy storage system to charge the electric automobile based on the peak clipping and valley filling strategy, the charging parameters and the highest power;
and step S50, the energy management system judges that the electric automobile is fully charged, the alternating current photovoltaic power generation system has no energy output and the battery energy storage system reaches the preset SOC based on the charging parameters, and then stops the power output of the alternating current power distribution cabinet, the alternating current photovoltaic power generation system or the battery energy storage system.
Further, the step S10 is specifically:
the energy management system limits the highest power output by the alternating current power distribution cabinet to be the sum of rated powers of all old alternating current charging piles.
Further, in step S30, the charging parameters at least include a maximum allowable total charging voltage of the power battery system, a maximum allowable charging current of the power battery system, a maximum allowable charging voltage of a single cell, a maximum allowable temperature of the single cell, a current voltage of the power battery system, a real-time SOC of the single cell, and a real-time SOC of the power battery system.
Further, the step S40 specifically includes:
step S41, the energy management system creates a peak clipping and valley filling strategy and sets a low electric quantity threshold;
step S42, the energy management system calculates the charging required power of the electric automobile based on the charging parameters;
step S43, the energy management system judges whether the power grid is on-line through the AC power distribution cabinet, if yes, the step S44 is executed; if not, disconnecting the AC power distribution cabinet from the power grid, controlling the AC photovoltaic power generation system and the battery energy storage system to charge the electric automobile based on the charging required power, and entering the step S50;
step S44, the energy management system judges whether the electric quantity of the battery energy storage system is lower than the low electric quantity threshold value, if yes, the step S45 is executed; if not, go to step S46;
step S45, the energy management system judges whether the charging demand power is larger than the output power of the alternating current photovoltaic power generation system, if so, the alternating current photovoltaic power generation system is preferentially utilized to charge the electric automobile, then, based on the peak clipping and valley filling strategy and the highest power, the alternating current power distribution cabinet and the alternating current photovoltaic power generation system are utilized to charge the electric automobile and the battery energy storage system, and the step S50 is carried out; if not, charging the electric automobile and the battery energy storage system by using the alternating current photovoltaic power generation system, and entering the step S50;
step S46, the energy management system judges whether the charging demand power is larger than the sum of the output power of the alternating current photovoltaic power generation system and the output power of the battery energy storage system, if yes, the energy management system charges the electric automobile by using the alternating current power distribution cabinet, the alternating current photovoltaic power generation system and the battery energy storage system in combination with the highest power, and the step S50 is entered; if not, the alternating current photovoltaic power generation system and the battery energy storage system are used for charging the electric automobile, and the process goes to step 50.
Further, in step S40, the peak clipping and valley filling strategy specifically includes:
setting time periods corresponding to the flat time period, the valley time period and the peak time period, judging whether the current time is in the flat time period, the valley time period or the peak time period,
if the time interval is flat, the electric automobile is charged by taking electricity from the power grid through the alternating-current power distribution cabinet, and the battery energy storage system is not charged through the alternating-current power distribution cabinet;
if the valley time period is, charging the electric automobile and the battery energy storage system by taking electricity from the power grid through the alternating-current power distribution cabinet;
if the peak time is the peak time, the alternating current photovoltaic power generation system and the battery energy storage system are preferentially utilized to charge the electric automobile.
The invention has the advantages that:
through setting up AC photovoltaic power generation system, energy storage converter and battery energy storage system, the realization utilizes the light energy to give electric automobile, battery energy storage system charges, the electric energy contravariant in with battery energy storage system through energy storage converter charges for electric automobile, and the peak clipping that establishes through energy management system fills in the valley tactics intelligence charges for battery energy storage system, inject the highest power of AC distribution cabinet output, finally realize under the prerequisite that does not increase electric power distribution network pressure, promote output, need not to carry out the dilatation to the electric wire netting promptly, need not to reform transform the circuit, alright increase the quantity of filling electric pile, and then charge for more electric automobile.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic block circuit diagram of a light charging and storing system according to the present invention.
Fig. 2 is a schematic block circuit diagram of the battery energy storage system of the present invention.
Fig. 3 is a schematic block diagram of the circuit of the use state of the light storage and charging system of the invention.
Fig. 4 is a schematic diagram of the power output of an optical charging system of the present invention.
Fig. 5 is a flow chart of a method of operating a light charging and storage system of the present invention.
Description of the labeling:
100-a light storage and charging system, 1-an alternating current power distribution cabinet, 2-an old alternating current charging pile, 3-a charging pile controller, 4-a new alternating current charging pile, 5-an alternating current photovoltaic power generation system, 6-an energy storage converter, 7-a battery energy storage system, 8-an energy management system, 9-UPS, 10-load, 11-server, 12-electric vehicle, 51-a photovoltaic controller, 52-a photovoltaic module, 71-BMS and 72-a lithium iron phosphate battery.
Detailed Description
The technical scheme in the embodiment of the application has the following general idea: the alternating current photovoltaic power generation system 5 is arranged to convert light energy into electric energy to charge the electric automobile 12; the energy storage converter 6 and the battery energy storage system 7 are arranged, the battery energy storage system 7 is charged when the optical storage charging system 100 is idle, and the electric energy in the battery energy storage system 7 is inverted to charge the electric automobile 12 through the energy storage converter 6 when the electric automobile 12 has a charging requirement; setting a peak clipping and valley filling strategy to balance the peak-valley power of the power grid; the maximum power output by the alternating current power distribution cabinet 1 is limited, and the increase of the pressure of the power distribution network is avoided, so that the output power is improved on the premise of not increasing the pressure of the power distribution network.
Referring to fig. 1 to 5, a solid line represents a high voltage line, and a dashed line represents a communication line, a preferred embodiment of an optical charging and storage system 100 according to the present invention includes:
the alternating current power distribution cabinet 1 is used for accessing a power grid and distributing the power of the power grid to the old alternating current charging pile 2, the new alternating current charging pile 4, the charging pile controller 3, the load 10, the battery energy storage system 7 and the like for use;
the old alternating current charging pile 2 is connected with the alternating current power distribution cabinet 1 and has the functions of electric energy metering and insulation detection;
the charging pile controller 3 is connected with the alternating current power distribution cabinet 1 and the old alternating current charging pile 2 and is used for controlling the output power of the new alternating current charging pile 4, communicating with the electric automobile 12 through the new alternating current charging pile 4, reducing the output power of the new alternating current charging pile 4 when the electric quantity of the battery energy storage system 7 is insufficient and the alternating current photovoltaic power generation system 5 has no energy, and preferentially ensuring the power output of the old alternating current charging pile 2;
the new alternating-current charging pile 4 is connected with the charging pile controller 3 and has the functions of electric energy metering and insulation detection;
an alternating current photovoltaic power generation system 5 connected with the old alternating current charging pile 2 and the charging pile controller 3;
an energy storage converter (PCS)6 connected with the AC power distribution cabinet 1, the old AC charging pile 2, the charging pile controller 3 and the AC photovoltaic power generation system 5; the energy storage converter 6 is used for controlling the charging and discharging of a battery energy storage system 7, and receiving the energy allocation and control protection of the energy management system 8;
the battery energy storage system 7 is connected with the energy storage converter 6 and used for buffering in the energy allocation process, so that the purposes of peak clipping, valley filling, capacity increasing and capacity expanding are achieved, and the pressure of the power distribution capacity of a power grid is relieved;
an Energy Management System (EMS)8, which is respectively connected with the ac power distribution cabinet 1, the charging pile controller 3, the old ac charging pile 2, the new ac charging pile 4, the ac photovoltaic power generation system 5, the energy storage converter 6 and the battery energy storage system 7; the energy management system 8 is used for controlling the operation of the light storage and charging system 100 and uploading the charging data of the electric vehicle 12 to the server 11.
The alternating current photovoltaic power generation system 5 includes:
a photovoltaic controller 51, which is respectively connected with the old traffic charging pile 2, the charging pile controller 3 and the energy management system 8;
and a set of photovoltaic modules 52 connected with the photovoltaic controller 51. The photovoltaic controller 51 has an MPPT power tracking function, and realizes high-efficiency DC/AC conversion, and the DC energy output by the photovoltaic module 52 is converted into a voltage matched with the AC bus, and green energy is stored in the battery energy storage system 7 or directly used for the load 10.
The battery energy storage system 7 includes:
a BMS71 connected to the energy storage converter 6 and the energy management system 8, respectively;
the lithium iron phosphate batteries 72 are respectively connected with the BMS71 and the energy storage converter 6; and the lithium iron phosphate batteries 72 are connected in series and in parallel, and the BMS71 is used for carrying out data acquisition and control protection on the lithium iron phosphate batteries 72.
The ac distribution cabinet 1 is provided with an ac bidirectional metering meter (not shown).
Further comprising:
an UPS (uninterruptible power supply) 9 is connected to the energy management system 8 and is used to ensure uninterrupted operation of the energy management system 8 in the event of a power failure in the grid.
The invention discloses a preferred embodiment of an operation method of a light storage and charging system, which comprises the following steps:
step S10, limiting the highest power output by the AC power distribution cabinet by the energy management system;
step S20, each electric automobile is connected with an old alternating current charging pile or a new alternating current charging pile, an electronic lock is locked to prevent a gun head from falling off, a self-checking stage is started, a low-voltage auxiliary power supply loop is conducted to supply power to a control device of the electric automobile, insulation detection is carried out, and electric energy is input into a discharge loop to discharge energy after the insulation detection is finished;
step S30, performing real-time interaction between the old traffic charging pile or the new traffic charging pile and the electric automobile, acquiring charging parameters of the electric automobile and sending the charging parameters to the energy management system;
step S40, the energy management system creates a peak clipping and valley filling strategy, and controls an alternating current power distribution cabinet, an alternating current photovoltaic power generation system or a battery energy storage system to charge the electric automobile based on the peak clipping and valley filling strategy, the charging parameters and the highest power;
and step S50, the energy management system judges that the electric automobile is fully charged, the alternating current photovoltaic power generation system has no energy output and the battery energy storage system reaches the preset SOC based on the charging parameters, and then stops the power output of the alternating current power distribution cabinet, the alternating current photovoltaic power generation system or the battery energy storage system.
During specific implementation, the energy management system can record the power use condition of each time period, and then optimize power distribution and energy management based on the power use condition, so that the rationality of energy utilization is further improved.
The step S10 specifically includes:
the energy management system limits the highest power output by the alternating current power distribution cabinet to be the sum of rated powers of all old alternating current charging piles.
In step S30, the charging parameters at least include a maximum allowable total charging voltage of the power battery system, a maximum allowable charging current of the power battery system, a maximum allowable charging voltage of a single battery cell, a maximum allowable temperature of the single battery cell, a current voltage of the power battery system, a real-time SOC of the single battery cell, and a real-time SOC of the power battery system.
The step S40 specifically includes:
step S41, the energy management system creates a peak clipping and valley filling strategy and sets a low electric quantity threshold;
step S42, the energy management system calculates the charging required power of the electric automobile based on the charging parameters;
step S43, the energy management system judges whether the power grid is on-line through the AC power distribution cabinet, if yes, the step S44 is executed; if not, disconnecting the AC power distribution cabinet from the power grid, controlling the AC photovoltaic power generation system and the battery energy storage system to charge the electric automobile based on the charging required power, and entering the step S50;
step S44, the energy management system judges whether the electric quantity of the battery energy storage system is lower than the low electric quantity threshold value, if yes, the step S45 is executed; if not, go to step S46;
step S45, the energy management system judges whether the charging demand power is larger than the output power of the alternating current photovoltaic power generation system, if so, the alternating current photovoltaic power generation system is preferentially utilized to charge the electric automobile, then, based on the peak clipping and valley filling strategy and the highest power, the alternating current power distribution cabinet and the alternating current photovoltaic power generation system are utilized to charge the electric automobile and the battery energy storage system, and the step S50 is carried out; if not, charging the electric automobile and the battery energy storage system by using the alternating current photovoltaic power generation system, and entering the step S50;
step S46, the energy management system judges whether the charging demand power is larger than the sum of the output power of the alternating current photovoltaic power generation system and the output power of the battery energy storage system, if yes, the energy management system charges the electric automobile by using the alternating current power distribution cabinet, the alternating current photovoltaic power generation system and the battery energy storage system in combination with the highest power, and the step S50 is entered; if not, the alternating current photovoltaic power generation system and the battery energy storage system are used for charging the electric automobile, and the process goes to step 50.
In step S40, the peak clipping and valley filling strategy specifically includes:
setting time periods corresponding to the flat time period, the valley time period and the peak time period, judging whether the current time is in the flat time period, the valley time period or the peak time period,
if the time interval is flat, the electric automobile is charged by taking electricity from the power grid through the alternating-current power distribution cabinet, and the battery energy storage system is not charged through the alternating-current power distribution cabinet;
if the valley time period is, charging the electric automobile and the battery energy storage system by taking electricity from the power grid through the alternating-current power distribution cabinet;
if the peak time is the peak time, the alternating current photovoltaic power generation system and the battery energy storage system are preferentially utilized to charge the electric automobile.
The application has the following six working modes: 1. normal operation of the satisfaction rate: the method comprises the following steps that (1) an alternating current power distribution cabinet, an alternating current photovoltaic power generation system and a battery energy storage system are formed by an old alternating current charging pile, a new alternating current charging pile and a load; 2. under the condition that the alternating current photovoltaic power generation system has no power: the alternating current power distribution cabinet and the battery energy storage system are the old alternating current charging pile, the new alternating current charging pile and the load; 3. the condition that the charge of the battery energy storage system is lower than the low charge threshold: the alternating current power distribution cabinet and the alternating current photovoltaic power generation system are the old alternating current charging pile, the new alternating current charging pile and the load; 4. the AC power distribution cabinet charges the battery energy storage system: the method comprises the following steps that (1) an alternating current power distribution cabinet is composed of a battery energy storage system, an old alternating current charging pile, a new alternating current charging pile and a load; 5. the AC power distribution cabinet and the AC photovoltaic power generation system charge the battery energy storage system: the alternating current power distribution cabinet and the alternating current photovoltaic power generation system are a battery energy storage system, an old alternating current charging pile, a new alternating current charging pile and a load; 6. the alternating current photovoltaic power generation system and the battery energy storage system supply power to the charging pile: alternating current photovoltaic power generation system + battery energy storage system is the electric pile of old exchange + electric pile + load of new exchange.
In summary, the invention has the advantages that:
through setting up AC photovoltaic power generation system, energy storage converter and battery energy storage system, the realization utilizes the light energy to give electric automobile, battery energy storage system charges, the electric energy contravariant in with battery energy storage system through energy storage converter charges for electric automobile, and the peak clipping that establishes through energy management system fills in the valley tactics intelligence charges for battery energy storage system, inject the highest power of AC distribution cabinet output, finally realize under the prerequisite that does not increase electric power distribution network pressure, promote output, need not to carry out the dilatation to the electric wire netting promptly, need not to reform transform the circuit, alright increase the quantity of filling electric pile, and then charge for more electric automobile.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (10)
1. A light charging and storage system, comprising: the method comprises the following steps:
an AC distribution cabinet;
the old alternating current charging pile is connected with the alternating current power distribution cabinet;
the charging pile controller is connected with the alternating current power distribution cabinet and the old alternating current charging pile;
at least one new AC charging pile connected with the charging pile controller;
the alternating current photovoltaic power generation system is connected with the old alternating current charging pile and the charging pile controller;
the energy storage converter is connected with the alternating current power distribution cabinet, the old alternating current charging pile, the charging pile controller and the alternating current photovoltaic power generation system;
a battery energy storage system connected with the energy storage converter;
and the energy management system is respectively connected with the alternating current power distribution cabinet, the charging pile controller, the old alternating current charging pile, the new alternating current charging pile, the alternating current photovoltaic power generation system, the energy storage converter and the battery energy storage system.
2. A light charging system as claimed in claim 1, wherein: the alternating current photovoltaic power generation system includes:
the photovoltaic controller is respectively connected with the old traffic charging pile, the charging pile controller and the energy management system;
and the set of photovoltaic modules is connected with the photovoltaic controller.
3. A light charging system as claimed in claim 1, wherein: the battery energy storage system includes:
the BMS is respectively connected with the energy storage converter and the energy management system;
and the lithium iron phosphate batteries are respectively connected with the BMS and the energy storage converter.
4. A light charging system as claimed in claim 1, wherein: the alternating current power distribution cabinet is provided with an alternating current bidirectional metering ammeter.
5. A light charging system as claimed in claim 1, wherein: further comprising:
a UPS coupled to the energy management system.
6. A method of operating a light storage and charging system, comprising: the method entails using a light charging and storage system as claimed in any one of claims 1 to 5, comprising the steps of:
step S10, limiting the highest power output by the AC power distribution cabinet by the energy management system;
step S20, each electric automobile is connected with an old traffic charging pile or a new traffic charging pile;
step S30, performing real-time interaction between the old traffic charging pile or the new traffic charging pile and the electric automobile, acquiring charging parameters of the electric automobile and sending the charging parameters to the energy management system;
step S40, the energy management system creates a peak clipping and valley filling strategy, and controls an alternating current power distribution cabinet, an alternating current photovoltaic power generation system or a battery energy storage system to charge the electric automobile based on the peak clipping and valley filling strategy, the charging parameters and the highest power;
and step S50, the energy management system judges that the electric automobile is fully charged, the alternating current photovoltaic power generation system has no energy output and the battery energy storage system reaches the preset SOC based on the charging parameters, and then stops the power output of the alternating current power distribution cabinet, the alternating current photovoltaic power generation system or the battery energy storage system.
7. A method of operating a light storage and charging system as claimed in claim 6, characterized by: the step S10 specifically includes:
the energy management system limits the highest power output by the alternating current power distribution cabinet to be the sum of rated powers of all old alternating current charging piles.
8. A method of operating a light storage and charging system as claimed in claim 6, characterized by: in step S30, the charging parameters at least include a maximum allowable total charging voltage of the power battery system, a maximum allowable charging current of the power battery system, a maximum allowable charging voltage of a single battery cell, a maximum allowable temperature of the single battery cell, a current voltage of the power battery system, a real-time SOC of the single battery cell, and a real-time SOC of the power battery system.
9. A method of operating a light storage and charging system as claimed in claim 6, characterized by: the step S40 specifically includes:
step S41, the energy management system creates a peak clipping and valley filling strategy and sets a low electric quantity threshold;
step S42, the energy management system calculates the charging required power of the electric automobile based on the charging parameters;
step S43, the energy management system judges whether the power grid is on-line through the AC power distribution cabinet, if yes, the step S44 is executed; if not, disconnecting the AC power distribution cabinet from the power grid, controlling the AC photovoltaic power generation system and the battery energy storage system to charge the electric automobile based on the charging required power, and entering the step S50;
step S44, the energy management system judges whether the electric quantity of the battery energy storage system is lower than the low electric quantity threshold value, if yes, the step S45 is executed; if not, go to step S46;
step S45, the energy management system judges whether the charging demand power is larger than the output power of the alternating current photovoltaic power generation system, if so, the alternating current photovoltaic power generation system is preferentially utilized to charge the electric automobile, then, based on the peak clipping and valley filling strategy and the highest power, the alternating current power distribution cabinet and the alternating current photovoltaic power generation system are utilized to charge the electric automobile and the battery energy storage system, and the step S50 is carried out; if not, charging the electric automobile and the battery energy storage system by using the alternating current photovoltaic power generation system, and entering the step S50;
step S46, the energy management system judges whether the charging demand power is larger than the sum of the output power of the alternating current photovoltaic power generation system and the output power of the battery energy storage system, if yes, the energy management system charges the electric automobile by using the alternating current power distribution cabinet, the alternating current photovoltaic power generation system and the battery energy storage system in combination with the highest power, and the step S50 is entered; if not, the alternating current photovoltaic power generation system and the battery energy storage system are used for charging the electric automobile, and the process goes to step 50.
10. A method of operating a light storage and charging system as claimed in claim 6, characterized by: in step S40, the peak clipping and valley filling strategy specifically includes:
setting time periods corresponding to the flat time period, the valley time period and the peak time period, judging whether the current time is in the flat time period, the valley time period or the peak time period,
if the time interval is flat, the electric automobile is charged by taking electricity from the power grid through the alternating-current power distribution cabinet, and the battery energy storage system is not charged through the alternating-current power distribution cabinet;
if the valley time period is, charging the electric automobile and the battery energy storage system by taking electricity from the power grid through the alternating-current power distribution cabinet;
if the peak time is the peak time, the alternating current photovoltaic power generation system and the battery energy storage system are preferentially utilized to charge the electric automobile.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113547946A (en) * | 2021-07-05 | 2021-10-26 | 宁波三星智能电气有限公司 | Charging control method of energy storage type charging pile |
| CN113568307A (en) * | 2021-07-02 | 2021-10-29 | 福建时代星云科技有限公司 | Control strategy optimization method for storage and charging station and terminal |
| CN115107550A (en) * | 2022-07-11 | 2022-09-27 | 上海快卜新能源科技有限公司 | Charging control system of energy storage charging station and charging method thereof |
| CN116683600A (en) * | 2023-03-14 | 2023-09-01 | 深圳博浩远科技有限公司 | Hybrid power supply optical storage and charging system and control method thereof |
| CN116819355A (en) * | 2023-04-28 | 2023-09-29 | 广东恒翼能科技股份有限公司 | Energy-saving test system for direct-current bus of micro-grid at rear section of battery cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207542817U (en) * | 2017-11-03 | 2018-06-26 | 阳光电源股份有限公司 | A kind of photovoltaic generation charging station |
| CN212373182U (en) * | 2020-03-31 | 2021-01-19 | 福建时代星云科技有限公司 | Light storage charging detection system |
-
2021
- 2021-01-21 CN CN202110080940.6A patent/CN112909971B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207542817U (en) * | 2017-11-03 | 2018-06-26 | 阳光电源股份有限公司 | A kind of photovoltaic generation charging station |
| CN212373182U (en) * | 2020-03-31 | 2021-01-19 | 福建时代星云科技有限公司 | Light storage charging detection system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568307A (en) * | 2021-07-02 | 2021-10-29 | 福建时代星云科技有限公司 | Control strategy optimization method for storage and charging station and terminal |
| CN113568307B (en) * | 2021-07-02 | 2022-04-01 | 福建时代星云科技有限公司 | Control strategy optimization method for storage and charging station and terminal |
| WO2023272957A1 (en) * | 2021-07-02 | 2023-01-05 | 福建时代星云科技有限公司 | Control policy optimization method and terminal for storage and charging station |
| CN113547946A (en) * | 2021-07-05 | 2021-10-26 | 宁波三星智能电气有限公司 | Charging control method of energy storage type charging pile |
| CN113547946B (en) * | 2021-07-05 | 2023-08-01 | 宁波三星智能电气有限公司 | Charging control method for energy storage type charging pile |
| CN115107550A (en) * | 2022-07-11 | 2022-09-27 | 上海快卜新能源科技有限公司 | Charging control system of energy storage charging station and charging method thereof |
| CN116683600A (en) * | 2023-03-14 | 2023-09-01 | 深圳博浩远科技有限公司 | Hybrid power supply optical storage and charging system and control method thereof |
| CN116819355A (en) * | 2023-04-28 | 2023-09-29 | 广东恒翼能科技股份有限公司 | Energy-saving test system for direct-current bus of micro-grid at rear section of battery cell |
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