CN107069911A - A kind of charging pile system and its control method - Google Patents
A kind of charging pile system and its control method Download PDFInfo
- Publication number
- CN107069911A CN107069911A CN201710110340.3A CN201710110340A CN107069911A CN 107069911 A CN107069911 A CN 107069911A CN 201710110340 A CN201710110340 A CN 201710110340A CN 107069911 A CN107069911 A CN 107069911A
- Authority
- CN
- China
- Prior art keywords
- power
- mode
- modules
- bus
- power network
- 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.)
- Granted
Links
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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
-
- 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
- B60L53/20—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 characterised by converters located in the vehicle
- B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
-
- 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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- 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
-
- 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
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
-
- 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
-
- 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
-
- 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
-
- 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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses a kind of charging pile system and its control method, by sub- power network two ends ground voltage frequency detecting come the mode of operation of decision systems, pass through running come the electric power between regulator power network for this five kinds of patterns of ordinary control mode, selfhealing mode, excess load pattern, off-network pattern and grid-connect mode, strengthen the stability and self-healing property of power network, so that can the compatible purpose for merging, reaching power information interaction between different voltage class and the sub- power network of frequency level；And using multiplex circuit and by the way of connecing in system, pass through the energy management in busbar voltage, coordinate the working characteristics between control load power source, have electric energy metrical pattern concurrently simultaneously, characteristic available for load power source switches, possess compatible new energy, the control mode that automatic governing power output and various energy resources are incorporated to, and keep flexibility and security in switching.
Description
Technical field
The present invention relates to charging pile field, and in particular to a kind of charging pile system and its control method.
Background technology
With the continuous intensification of global energy crisis, in exhausted and the atmosphere pollution, Global Temperature increasingly of petroleum resources
The harm aggravation risen, national governments and Automobile Enterprises it is well recognized that energy-conservation and emission reduction are the directions of future automobile technology development,
Development of EV by be solve the two problems optimal path.China pays much attention to the development of electric automobile, and country is in succession
Series of standards has been put into effect to help the development with specification electric automobile.《Energy-conservation and new-energy automobile estate planning》In draft
Point out to be orientated using pure electric automobile as main strategic.Relevant expert points out that the development of pure electric automobile is asked in the presence of three big bottlenecks
Topic：One is the missing of standard, and two be the imperfection of supporting policy, and three be the advance to perfect order of planning and the construction of infrastructure.Wealth
Political affairs portion, the Department of Science and Technology, the Ministry of Industry and Information Technology, the Committee of Development and Reform, which combine, to issue a notice, and intends exempting the purchase car number of shaking to electric automobile, restricts driving
Etc. restrictive policy；Illustrate that country gives the policy support done one's utmost to promoting electric automobile, but electric automobile market develops
Still difficult, the reason for one of them is important is the delayed of easily electrically-charging equipment construction, it is therefore necessary to boost charge
Facilities Construction.
Therefore, country starts to build charging pile and starts to install in each cell and public place, with to electric automobile
Related infrastructure is provided, so that automobile user charges；But not have automatic governing defeated for existing traditional charging pile
Go out the function of power limit, because general in a region all use same power network, same power network connects some sons again
Power network, but because the frequency and voltage of the different each sub- power networks of development also can all produce change in region, also sub- power network
Generation is also easy in parallel connection and liquidates cause power network unstable, this just influences whether the charging pile pair being distributed under every sub- power network
The quality of charging electric vehicle；Preferably, the charging effect of electric automobile is preferable for sub- power grid quality for example in city, but
The problem of easily producing superfluous；But the sub- power grid quality in rural area is poor, the charging effect of electric automobile is less good, and
Deleterious effect easily is produced to the life-span of electric automobile and battery；Charging pile group that can not be under automatic governing power network big work(simultaneously
High-power peak value when rate is exported, it is impossible to rationally using the energy, cause the waste of the energy；And power source loads still lack when switching
Weary enough flexibilities and security.
The content of the invention
The purpose of the present invention is that automatic governing power output and various energy resources are incorporated to simultaneously to provide a kind of reasonable energy utilization
And switch flexible charging pile system and its control method.
In order to solve the above technical problems, the present invention is achieved through the following technical solutions：Including main power network and pass through electric power road
Connected and be connected with each other between some sub- power networks of main power network, the sub- power network also by Electric power route deivce by device, the sub- power network
Some charging stations are also inside connected with by AC buses；The charging station includes some chargings being connected with AC buses in sub- power network
Stake, energy accumulation current converter, new energy access device and the other energy access devices being connected on AC buses；Between the charging station
Realize communication matching；The charging pile includes the AC/DC modules and some DC/DC modules being connected with AC buses, the AC/DC moulds
Block connects some DC/DC modules by dc bus.
Preferably, the energy accumulation current converter is connected with battery, facilitates storing electrical energy.
Preferably, some DC/DC modules are connected to battery module, PVarray modules, new energy car battery
Group module and standby power supply module, for various energy resources and connect and can fast and flexible switching.
Preferably, the Electric power route deivce is also associated with the frequency that frequency converter is used to detect sub- power network, examines easily and fast
Survey.
A kind of control method of charging pile system：By the detection of the electric voltage frequency to sub- power network two ends, carry out decision systems
Mode of operation, for realize coordinate control, automatic governing power output；
1）Ordinary control mode：When the frequency of a sub- power network is too high, using the V/f droop control patterns of energy accumulation current converter,
Connected Electric power route deivce starts the reference voltage signal V and mains frequency of the adjacent sub- power network of change opposite sidef；At this moment,
Adjacent sub- power network just constitutes the frequency regulation that new power supply participates in sub- power network with Electric power route deivce；For ensureing different voltage class
Circulation between the sub- power network of frequency level；And in charging pile inside, AC/DC modules connect some by dc bus
DC/DC modules, using the energy management on dc bus, regulation power output causes the DC/DC modules each connected to have
Enough energy output；
2）Selfhealing mode：When generation disaster causes power network power supply facilities to damage, the unstable phenomenon of power network or generation will result in
Failure, produces power network fluctuation；In the event of the output current and phase of the unstable phenomenon of power network, then Electric power route deivce output DC/AC sides
Voltage, is controlled using frequency following mode；If breaking down, charging pile directly completes Fault Isolation with sub- power network, and will
The energy of storage is powered back to the place of needs, the load for reversely supporting power network；
3）Excess load pattern：When the electric automobile charged needed for charging station exceedes the total negative of all charging piles of this charging station
During lotus, to prevent from causing the failure or power network of electricity consumption around to produce fluctuation, at this moment charging pile then uses communication and the balance of voltage,
The load value exceeded is drawn by the communication module UNICOM news carried between each charging pile, then controls the output of every charging pile
Ensure the equilibrium output volume of each charging pile；And the direct current between AC/DC to DC/DC in the case of excess load can be detected
The decline of pressure, allows charging pile all to reduce Power operation automatically, it is ensured that the mutual balance of charging pile output, it is ensured that the safety of charging station
Property；
4）Grid-connect mode：Mode of operation is manually selected by user；
a）Mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, battery
Module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, the appearance only in battery module
Allow low current charge when amount is not enough, and battery module it is easy to be not enough when do not work；When dc bus is more than 380V,
Battery module uses three stage charging system；
b）Based on the mode of operation of PVarray modules, when dc bus is less than 380V, the DC/DC modules of PVarray modules connection
It is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the mode of operation of new energy car batteries module, when dc bus is more than or equal to 340V, new energy car stores
Battery module charges normal work, and when dc bus is less than 340V, new energy car batteries module does not work；
d）Mode of operation based on standby power supply module, when dc bus is less than 380V, standby power supply module inversion peak power
Output, dc bus is in 380V ~ 400V, standby power supply module normal work；
5）Off-network pattern：Mode of operation is manually selected by user；
a）Off-network mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, stores
Battery module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, only in battery module
Off-capacity when allow low current charge, and battery module it is easy to be not enough when do not work；Dc bus is more than
During 380V, battery module uses three stage charging system；
b）Off-network mode of operation based on PVarray modules, when dc bus is less than 380V, the DC/DC of PVarray modules connection
Module is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the off-network mode of operation of new energy car batteries module, the DC/ being connected with new energy car batteries module
The off-network mode of operation that DC modules are operated in battery module assists DC load and AC load；
d）Off-network mode of operation based on standby power supply module, standby power supply module inversion discharge mode, it is allowed to which external world's exchange is negative
Carry.
The present invention, come the mode of operation of decision systems, passes through conventional control mould by sub- power network two ends ground voltage frequency detecting
The operation of this five kinds of patterns of formula, selfhealing mode, excess load pattern, off-network pattern and grid-connect mode comes between regulator power network
Electric power, strengthens the stability and self-healing property of power network so that compatible can melt between different voltage class and the sub- power network of frequency level
Close, reach the purpose of power information interaction；And pass through the energy in busbar voltage using multiplex circuit and by the way of connecing in system
Buret is managed, and coordinates the working characteristics between control load power source, while have electric energy metrical pattern concurrently, the spy available for load power source
Property switching, possess compatible new energy, the control mode that automatic governing power output and various energy resources are incorporated to, and protect in switching
Hold flexibility and security.
Compared with prior art, the present invention is advantageous in that：1）Allotment electric energy can be changed between sub- power network, according to frequency
Rate agreement automatic governing power output, reaches the purpose of the rationally application energy；2）Adjust under same power network between sub- power network
Electric power so that power network possesses small, the good advantage of dynamic and static state performance of impact；3）The stability of power network can be strengthened so that different electricity
Grade circulation compatible with the sub- power network of frequency level is pressed, power information can be interacted；4）Made in power network shakiness or generation disaster
It can guarantee that civilian side power network can fast quick-recovery electric energy self-healing when being damaged into power network power supply facilities；5）Anti-phase power supply can be realized.
Brief description of the drawings
Fig. 1 is system frame diagram of the invention.
Fig. 2 shows schematic diagram for the frame of sub- power network of the invention.
Fig. 3 is that the frame of charging pile in fault mode shows schematic diagram..
Fig. 4 is the circuit theory diagrams of charging pile.
Embodiment
Below in conjunction with the accompanying drawings with embodiment, the invention will be further described.
Fig. 1 is seen to Fig. 4, a kind of charging pile system, it is characterised in that：Connected including main power network and by Electric power route deivce and led
It is connected with each other between some sub- power networks of power network, the sub- power network also by Electric power route deivce, AC is also passed through in the sub- power network
Bus is connected with some charging stations；The charging station include be connected with AC buses in sub- power network some charging piles, be connected to AC
Energy accumulation current converter, new energy access device and other energy access devices on bus；Communication is realized between the charging station
Match somebody with somebody；The charging pile includes the AC/DC modules and some DC/DC modules being connected with AC buses, and the AC/DC modules pass through direct current
Bus connects some DC/DC modules；The energy accumulation current converter is connected with battery；Some DC/DC modules are connected to battery
Module, PVarray modules, new energy car batteries module and standby power supply module；The Electric power route deivce is also associated with becoming
Frequency device is used for the frequency for detecting sub- power network；Electric energy between the charging station is allocated according to communication with frequency two ways；
Electric power route deivce function is integrated with the charging pile and communication function carrys out distribution capability；The DC/DC modules and AC/DC modules
All it is way traffic.
A kind of control method of charging pile system：By the detection of the electric voltage frequency to sub- power network two ends, carry out decision systems
Mode of operation, for realize coordinate control, automatic governing power output；
1）Ordinary control mode：When the frequency of a sub- power network is too high, using the V/f droop control patterns of energy accumulation current converter,
Connected Electric power route deivce starts the reference voltage signal V and mains frequency of the adjacent sub- power network of change opposite sidef；At this moment,
Adjacent sub- power network just constitutes the frequency regulation that new power supply participates in sub- power network with Electric power route deivce；For ensureing different voltage class
Circulation between the sub- power network of frequency level；And in charging pile inside, AC/DC modules connect some by dc bus
DC/DC modules, using the energy management on dc bus, regulation power output causes the DC/DC modules each connected to have
Enough energy output；
2）Selfhealing mode：When generation disaster causes power network power supply facilities to damage, the unstable phenomenon of power network or generation will result in
Failure, produces power network fluctuation；In the event of the output current and phase of the unstable phenomenon of power network, then Electric power route deivce output DC/AC sides
Voltage, is controlled using frequency following mode；If breaking down, charging pile directly completes Fault Isolation with sub- power network, and will
The energy of storage is powered back to the place of needs, the load for reversely supporting power network；
3）Excess load pattern：When the electric automobile charged needed for charging station exceedes the total negative of all charging piles of this charging station
During lotus, to prevent from causing the failure or power network of electricity consumption around to produce fluctuation, at this moment charging pile then uses communication and the balance of voltage,
The load value exceeded is drawn by the communication module UNICOM news carried between each charging pile, then controls the output of every charging pile
Ensure the equilibrium output volume of each charging pile；And the direct current between AC/DC to DC/DC in the case of excess load can be detected
The decline of pressure, allows charging pile all to reduce Power operation automatically, it is ensured that the mutual balance of charging pile output, it is ensured that the safety of charging station
Property；
4）Grid-connect mode：Mode of operation is manually selected by user；
a）Mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, battery
Module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, the appearance only in battery module
Allow low current charge when amount is not enough, and battery module it is easy to be not enough when do not work；When dc bus is more than 380V,
Battery module uses three stage charging system；
b）Based on the mode of operation of PVarray modules, when dc bus is less than 380V, the DC/DC modules of PVarray modules connection
It is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the mode of operation of new energy car batteries module, when dc bus is more than or equal to 340V, new energy car stores
Battery module charges normal work, and when dc bus is less than 340V, new energy car batteries module does not work；
d）Mode of operation based on standby power supply module, when dc bus is less than 380V, standby power supply module inversion peak power
Output, dc bus is in 380V ~ 400V, and standby power supply module is in the sagging pattern normal work of voltage power；
5）Off-network pattern：Mode of operation is manually selected by user；
a）Off-network mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, stores
Battery module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, only in battery module
Off-capacity when allow low current charge, and battery module it is easy to be not enough when do not work；Dc bus is more than
During 380V, battery module uses three stage charging system；
b）Off-network mode of operation based on PVarray modules, when dc bus is less than 380V, the DC/DC of PVarray modules connection
Module is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the off-network mode of operation of new energy car batteries module, the DC/ being connected with new energy car batteries module
The off-network mode of operation that DC modules are operated in battery module assists DC load and AC load；
d）Off-network mode of operation based on standby power supply module, standby power supply module inversion discharge mode, it is allowed to which external world's exchange is negative
Carry.
In present embodiment, it is connected with each other between sub- power network by Electric power route deivce, Electric power route deivce is according to sub- power network
Frequency carries out energy management, by detect the electric voltage frequency at sub- power network two ends come the mode of operation of decision systems participate in sub- power network it
Between frequency regulation；And high-power peak value when charging pile group high-power output simultaneously under sub- power network, power supply is automatically adjusted to bear
Still there are enough flexibilities, security when carrying switching；And can be used for load power source characteristic switching, possess compatible new energy, from
Complex control mode advantage and the convenient advantage of module group string that dynamic allotment power output and various energy resources are incorporated to.
In present embodiment, charging pile is by multiple power supplies and connects, by the energy management on dc bus, coordinates control
Working characteristics between load power source, while having electric energy metrical pattern concurrently；And the new energy electric energy of new energy access device fills
Nargin is associated with DC bus-bar voltage, if voltage is higher, and current electric energy is sufficient, then by adjusting power output so that each
Road DC/DC modules have enough energy output.
In present embodiment, in system convention control model, if the frequency of current sub- power network rises to current sub- power network
Minimum safe working frequency, then the Electric power route deivce being connected between adjacent sub- power network and current sub- power network can then start frequency conversion
Device, changes the reference voltage signal and frequency signal of output side transducer, now, and adjacent sub- power network and Electric power route deivce composition is new
Power supply participate in the frequency regulation of current sub- power network；Likewise, current sub- power network can also constitute another with Electric power route deivce
Individual new power participates in the frequency regulation of adjacent sub- power network；Ensure melting between different voltage class and the sub- power network of frequency level
It is logical.
In present embodiment, in system self-healing pattern, it is divided into two kinds of situations, one causes power network to power to occur disaster
, it is necessary to fast quick-recovery electric energy self-healing after facility damage；As shown in figure 3, occurring after damage failure, charging pile is directly complete with sub- power network
Into Fault Isolation, the safety of civilian side electricity consumption is protected, if charging war has been accessed to charging electric vehicle under new energy access device,
The power input of that whole charging station automatically switches to new energy support, such as photovoltaic, battery, wind energy；If any due to energy
The limited charging pile so this when in source can be all balanced according to excess load pattern；And charging station is in have the charging energy the
Under one support, all energy can power back to domestic electric network or be powered to public place；This when electronic vapour
The energy of the accesses such as car, new energy can reversely support network load；Secondly to occur the unstable phenomenon of power network, Electric power route deivce
When the frequency converter of connection detects that sub- power network is fluctuated, then the output current and phase voltage of Electric power route deivce output DC/AC sides, are adopted
Controlled with frequency following mode after a period of time, switch to venue V//fSagging mode.
In present embodiment, under system excess load pattern, filled in the excessive total load of electric automobile more than charging station is all
During the load of electric stake, to prevent from causing failure or the fluctuation of electricity consumption around, charging pile will automatic detection power；Charging pile meeting
It is balanced according to two sets of data；1）Communication balance, charging pile can be drawn in this charging station by communication each other and be born
Lotus exceedes certain value, then every charging pile starts self-healing and starts such as every stake output 30KW of Differential Output so this when
The load of charging station will be half as large, it is ensured that security and flexibility；2）Judged by DC voltage, if in excess load
In the case of AC/DC modules can decline so all charging piles to the DC voltage between DC/DC modules and carry out drop appearance automatically
The operation of power is reduced, is then balanced each other, plays a part of protecting the security of charging station；Use two simultaneously
Planting work ensures that system remains to normal work under excess load pattern.
In present embodiment, charging pile can manage electricity automatically to link the middle bridge of sub- power network and electric automobile
A series of switching action of electrical automobile side；The energy of electric automobile and energy-storage system can also be connected make electric automobile as
The energy energy storage device of most rear class, and electric automobile is connected with dc bus and ac bus, and by multiple power supplies simultaneously
Connect, pass through the energy management in busbar voltage；Coordinate control load power source between working characteristics, while having electric energy metrical mould concurrently
Formula.
In present embodiment, charging pile adds a variety of new energy of suede, and it is internal from sub- power network and battery is linked, and outside connects
Mouth can also extend out solar charger according to demand, and have the function of manually adjusting with managing energy mix automatically concurrently；Such as
Shown in Fig. 4, wherein the 1st, 2,3 parts all be two quadrant DC/DC variators, switch S1 therein all be killer switch, resistance R
All it is used to reduce for pre-buffering resistance and starts impact, inductance L1 is ordinary inductor, and two transistors Q1 and Q2 are IGBT, electricity
It is all then bus Support Capacitor to hold C；Part IV is then high power contravariant bridge, and switch S2 therein is AC circuit breaker, inductance
L2 is filter inductance, and four transistors Q3, Q4, Q5, Q6 manage for 4 IGBT of inverter bridge；Two quadrant is used inside charging pile
DC/DC converters allow the two-way flow of DC side energy, carry high power contravariant bridge and external electrical network UNICOM, Part I
DC/DC modules and battery be this charging pile from belting, the MPPT that remaining DC/DC module has photovoltaic booster converter concurrently fills
Can function and charge function；High power contravariant bridge is main to assist other energy to be powered for load, in the case of the off-network that power network departs from,
Ac power supply apparatus band AC load can also be used as.
In present embodiment, system also allows user on the basis of frequency, self-defined communications protocol；Energy storage dress inside power network
The active power and battery for putting output complete linear correlation, and its relation meets SOC=K*P+b；Active power passes through routine
V/F droop methods complete ac bus and connect, and its formula meets f=fn – (P - Pn)/a, and a=(Pmax – Pn)/(fn -
fmin) ；Wherein, Pmax is that distributed power source allows the peak power of output when frequency declines；Pn runs for distributed power source
Power output under rated frequency；Fn is power network rated frequency；What fmin allowed when being distributed power source Maximum Power Output
Minimum frequency.P is actual active power, and group mains frequency is in 50.2 ~ 51.5Hz, and the capacity of sub- power network is SOC=K*
(a*(f - fn) + Pn) + b；Frequency converter can according to the K in formula SOC=K* (a* (f-fn)+Pn)+b, b, fn,
The sub- net capacity of the constant calculations such as Pn, a, sub- power network internal information can complete capacity information interaction according to this scheme, and have change
PORT COM in frequency device is uploaded to internet, and power information is on the basis of frequency, the self-defined communications protocol of client.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims
It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's
Protection domain.
Claims (5)
1. a kind of charging pile system, it is characterised in that：Some sons of main power network are connected including main power network and by Electric power route deivce
It is connected with each other between power network, the sub- power network also by Electric power route deivce, if being also connected with the sub- power network by AC buses
Dry charging station；The charging station includes some charging piles being connected with AC buses in sub- power network, the energy storage being connected on AC buses
Current transformer, new energy access device and other energy access devices；Communication matching is realized between the charging station；The charging pile
Including the AC/DC modules and some DC/DC modules being connected with AC buses, the AC/DC modules connect some by dc bus
DC/DC modules.
2. a kind of charging pile system according to claim 1, it is characterised in that：The energy accumulation current converter is connected with electric power storage
Pond.
3. a kind of charging pile system according to claim 1, it is characterised in that：Some DC/DC modules are connected respectively
There are battery module, PVarray modules, new energy car batteries module and standby power supply module.
4. a kind of charging pile system according to claim 1, it is characterised in that：The Electric power route deivce is also associated with frequency conversion
Device is used for the frequency for detecting sub- power network.
5. a kind of control method of charging pile system：By the detection of the electric voltage frequency to sub- power network two ends, carry out decision systems
Mode of operation, control, automatic governing power output are coordinated for realizing；
1）Ordinary control mode：When the frequency of a sub- power network is too high, using the V/f droop control patterns of energy accumulation current converter,
Connected Electric power route deivce starts the reference voltage signal V and mains frequency of the adjacent sub- power network of change opposite sidef；At this moment,
Adjacent sub- power network just constitutes the frequency regulation that new power supply participates in sub- power network with Electric power route deivce；For ensureing different voltage class
Circulation between the sub- power network of frequency level；And in charging pile inside, AC/DC modules connect some by dc bus
DC/DC modules, using the energy management on dc bus, regulation power output causes the DC/DC modules each connected to have
Enough energy output；
2）Selfhealing mode：When generation disaster causes power network power supply facilities to damage, the unstable phenomenon of power network or generation will result in
Failure, produces power network fluctuation；In the event of the output current and phase of the unstable phenomenon of power network, then Electric power route deivce output DC/AC sides
Voltage, is controlled using frequency following mode；If breaking down, charging pile directly completes Fault Isolation with sub- power network, and will
The energy of storage is powered back to the place of needs, the load for reversely supporting power network；
3）Excess load pattern：When the electric automobile charged needed for charging station exceedes the total negative of all charging piles of this charging station
During lotus, to prevent from causing the failure or power network of electricity consumption around to produce fluctuation, at this moment charging pile then uses communication and the balance of voltage,
The load value exceeded is drawn by the communication module UNICOM news carried between each charging pile, then controls the output of every charging pile
Ensure the equilibrium output volume of each charging pile；And the direct current between AC/DC to DC/DC in the case of excess load can be detected
The decline of pressure, allows charging pile all to reduce Power operation automatically, it is ensured that the mutual balance of charging pile output, it is ensured that the safety of charging station
Property；
4）Grid-connect mode：Mode of operation is manually selected by user；
a）Mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, battery
Module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, the appearance only in battery module
Allow low current charge when amount is not enough, and battery module it is easy to be not enough when do not work；When dc bus is more than 380V,
Battery module uses three stage charging system；
b）Based on the mode of operation of PVarray modules, when dc bus is less than 380V, the DC/DC modules of PVarray modules connection
It is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the mode of operation of new energy car batteries module, when dc bus is more than or equal to 340V, new energy car stores
Battery module charges normal work, and when dc bus is less than 340V, new energy car batteries module does not work；
d）Mode of operation based on standby power supply module, when dc bus is less than 380V, standby power supply module inversion peak power
Output, dc bus is in 380V ~ 400V, standby power supply module normal work；
5）Off-network pattern：Mode of operation is manually selected by user；
a）Off-network mode of operation based on battery module, in the range of capacity of battery, when dc bus is less than 360V, stores
Battery module is operated in the sagging pattern of 340V ~ 360V voltage powers；Dc bus is in 360V ~ 380V, only in battery module
Off-capacity when allow low current charge, and battery module it is easy to be not enough when do not work；Dc bus is more than
During 380V, battery module uses three stage charging system；
b）Off-network mode of operation based on PVarray modules, when dc bus is less than 380V, the DC/DC of PVarray modules connection
Module is operated at maximum power point；When dc bus is more than 380V, the DC/DC modules of PVarray modules connection do not work then；
c）Based on the off-network mode of operation of new energy car batteries module, the DC/ being connected with new energy car batteries module
The off-network mode of operation that DC modules are operated in battery module assists DC load and AC load；
d）Off-network mode of operation based on standby power supply module, standby power supply module inversion discharge mode, it is allowed to which external world's exchange is negative
Carry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110340.3A CN107069911B (en) | 2017-02-28 | 2017-02-28 | Charging pile system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110340.3A CN107069911B (en) | 2017-02-28 | 2017-02-28 | Charging pile system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107069911A true CN107069911A (en) | 2017-08-18 |
| CN107069911B CN107069911B (en) | 2020-08-04 |
Family
ID=59622751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710110340.3A Active CN107069911B (en) | 2017-02-28 | 2017-02-28 | Charging pile system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069911B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189697A (en) * | 2018-01-16 | 2018-06-22 | 湖南四海中能电力科技有限公司 | Charge operation service system and management method based on terminal intelligent monitoring function |
| CN108382221A (en) * | 2018-01-25 | 2018-08-10 | 深圳新恒业电气有限公司 | The charging station energy efficiency managing method of intelligence |
| CN109103913A (en) * | 2018-09-05 | 2018-12-28 | 山东交通学院 | Charging energy-storing integral system and its working method based on charging pile |
| CN109768621A (en) * | 2018-12-20 | 2019-05-17 | 国网北京市电力公司 | Control method, device, storage medium and the electronic device of power equipment |
| CN113525173A (en) * | 2021-07-28 | 2021-10-22 | 上海优续新能源科技有限公司 | Battery box system capable of switching multi-voltage grade output and output voltage switching method |
| TWI753221B (en) * | 2018-02-09 | 2022-01-21 | 大陸商蔚來（安徽）控股有限公司 | Electric vehicle charging control device, method, controller and storage medium |
| US20230011000A1 (en) * | 2021-07-08 | 2023-01-12 | Enersys Delaware Inc. | Direct current fast charging systems with grid tied energy storage systems |
| CN117734509A (en) * | 2024-02-19 | 2024-03-22 | 深圳市捷易科技有限公司 | Charging control method, device, equipment and computer storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202405836U (en) * | 2012-01-17 | 2012-08-29 | 上海追日电气有限公司 | Photovoltaic charging system and charging station |
| US20140257584A1 (en) * | 2013-03-07 | 2014-09-11 | Kabushiki Kaisha Toshiba | Energy management system, energy management method, medium, and server |
-
2017
- 2017-02-28 CN CN201710110340.3A patent/CN107069911B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202405836U (en) * | 2012-01-17 | 2012-08-29 | 上海追日电气有限公司 | Photovoltaic charging system and charging station |
| US20140257584A1 (en) * | 2013-03-07 | 2014-09-11 | Kabushiki Kaisha Toshiba | Energy management system, energy management method, medium, and server |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189697A (en) * | 2018-01-16 | 2018-06-22 | 湖南四海中能电力科技有限公司 | Charge operation service system and management method based on terminal intelligent monitoring function |
| CN108382221A (en) * | 2018-01-25 | 2018-08-10 | 深圳新恒业电气有限公司 | The charging station energy efficiency managing method of intelligence |
| TWI753221B (en) * | 2018-02-09 | 2022-01-21 | 大陸商蔚來（安徽）控股有限公司 | Electric vehicle charging control device, method, controller and storage medium |
| CN109103913A (en) * | 2018-09-05 | 2018-12-28 | 山东交通学院 | Charging energy-storing integral system and its working method based on charging pile |
| CN109768621A (en) * | 2018-12-20 | 2019-05-17 | 国网北京市电力公司 | Control method, device, storage medium and the electronic device of power equipment |
| US20230011000A1 (en) * | 2021-07-08 | 2023-01-12 | Enersys Delaware Inc. | Direct current fast charging systems with grid tied energy storage systems |
| CN113525173A (en) * | 2021-07-28 | 2021-10-22 | 上海优续新能源科技有限公司 | Battery box system capable of switching multi-voltage grade output and output voltage switching method |
| CN113525173B (en) * | 2021-07-28 | 2024-05-24 | 上海优续新能源科技有限公司 | Battery box system capable of switching multi-voltage-class output and output voltage switching method |
| CN117734509A (en) * | 2024-02-19 | 2024-03-22 | 深圳市捷易科技有限公司 | Charging control method, device, equipment and computer storage medium |
| CN117734509B (en) * | 2024-02-19 | 2024-05-31 | 深圳市捷易科技有限公司 | Charging control method, device, equipment and computer storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107069911B (en) | 2020-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107069911A (en) | A kind of charging pile system and its control method | |
| CN103647274B (en) | A kind of for can the energy control method of grid-connected and micro-grid system from network operation | |
| CN104518563B (en) | The control method of charging system for electric automobile based on new energy application | |
| CN110556856B (en) | Communication-independent multi-mode electric energy router and seamless switching control method thereof | |
| Jia et al. | Architecture design for new AC-DC hybrid micro-grid | |
| CN108039732A (en) | A kind of and the one-piece type photovoltaic energy-storage system power supply of off-network and its control method | |
| CN106026168B (en) | The energy management strategies of honourable energy storage wisdom energy tower | |
| CN104065099A (en) | AC/DC hybrid modularized microgrid network structure based on hybrid energy storage and networking method of structure | |
| CN103595071A (en) | Energy system of micro-grid | |
| CN112072716A (en) | Power distribution network terminal electric energy router and control method thereof | |
| CN204046193U (en) | A kind of mixed type micro-grid system | |
| CN102916486A (en) | Intelligent micro-grid diesel-storage coordination control method | |
| CN104362656A (en) | Control method based on hybrid energy storage voltage source inverter (VSI) stabilizing microgrid power fluctuation | |
| CN102111077A (en) | Charging power supply system | |
| CN106786755A (en) | A kind of energy-storage system and control method | |
| CN102969742A (en) | Multifunction photovoltaic power generation experiment system and control method thereof | |
| CN209608351U (en) | Charging station, charging pile system with power grid ancillary service function | |
| CN114172242A (en) | Bidirectional charging and discharging system and control method thereof | |
| CN106160116A (en) | A kind of method of supplying power to utilizing street lamp case that charging pile is set and device | |
| CN103840548B (en) | A kind of transformer substation system with micro-grid system | |
| CN106712272A (en) | Uninterrupted power source system | |
| Cai et al. | Centralized control of parallel connected power conditioning system in electric vehicle charge-discharge and storage integration station | |
| Xu et al. | Energy management and control strategy for DC micro-grid in data center | |
| CN102223136A (en) | Non-energy-storing motor-driven system for complementary power supply of wind power generation and electrical network | |
| CN203883492U (en) | AC-DC hybrid modularized microgrid networking structure based on hybrid energy storage |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 312030 Zhejiang Province, Shaoxing city Keqiao District Chong Building B block 16 building 1612 room Applicant after: Zhejiang Lante New Energy Technology Co.,Ltd. Address before: 312030 Zhejiang Province, Shaoxing city Keqiao District Chong Building B block 16 building 1612 room Applicant before: SHAOXING LANNENG PHOTOVOLTAIC TECHNOLOGY CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A charging pile system and its control method Effective date of registration: 20221230 Granted publication date: 20200804 Pledgee: Shaoxing Branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: Zhejiang Lante New Energy Technology Co.,Ltd. Registration number: Y2022980029806 |