CN107528337A - A kind of electric automobile charging station with energy-storage system - Google Patents
A kind of electric automobile charging station with energy-storage system Download PDFInfo
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- CN107528337A CN107528337A CN201710798219.4A CN201710798219A CN107528337A CN 107528337 A CN107528337 A CN 107528337A CN 201710798219 A CN201710798219 A CN 201710798219A CN 107528337 A CN107528337 A CN 107528337A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 120
- 230000002441 reversible effect Effects 0.000 claims abstract description 38
- 230000005611 electricity Effects 0.000 claims abstract description 35
- 239000004065 semiconductor Substances 0.000 claims description 19
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000008901 benefit Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000036642 wellbeing Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000009987 spinning Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
Classifications
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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
- B60L53/30—Constructional details of charging stations
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- H02J7/0027—
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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
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of electric automobile charging station with energy-storage system, the charging station improves power supply stability using dual power supply mode, pass through the electric energy adjustment effect of charging station energy energy-storage system, the startup-shutdown number of conventional power generation usage unit in power network and the capacity of spinning reserve can be reduced, so that grid load curve is as far as possible steady, when can reduce that charging station is heavier in network load and tou power price is higher, avoid high electricity price, reduce charging station operating cost, the reliability of charge power supply can be improved, ensure that charging station uninterruptedly provides charge power supply for electric automobile, reversible transducer makes it possible charging station to power network sale of electricity, electric energy instruction, which can also be improved, reduces current fluctuation, and power factor is controlled well.
Description
Technical field
The present invention relates to a kind of electric automobile charging station with energy-storage system, and in particular to one kind can adjust network load
And the transformer station with larger operational efficiency of the economy.
Background technology
With the development of electric automobile, the demand of electric automobile charging station will be also stepped up, and can cause power load
Load demand transients increase, can be by increasing charging station higher level's electric power the problem of increasing to alleviate power demand moment
System power capacity solves, but it must cause the rise of power construction cost, and causes during non-electrical electrical automobile charges
Electric power resource and power equipment it is idle.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of electric automobile charging station is invented, in electric load
When demand is larger, effectively alleviates power system pressure, ensure the safe operation of power system and the reliable charging of electric automobile.
Technical scheme provided by the invention is：A kind of electric automobile charging station with energy-storage system, it includes：Fill
Electric stake incoming line switch cabinet, energy-storage system incoming line switch cabinet, bus connection switch cabinet, charging pile distribution switchgear cabinet, energy-storage system, which are matched somebody with somebody, to be established by cable
Close cabinet, reversible transducer cabinet, charging pile and charging server, it is characterised in that：Charging pile incoming line switch cabinet, energy-storage system inlet wire
Switch cubicle is connected with power network respectively, and energy-storage system incoming line cabinet obtains charging station first via incoming power at power network, and charging pile enters
Line cabinet obtains the second road incoming power at power network, and charging pile incoming line switch cabinet is connected with charging pile power distribution cabinet by busbar, filled
Electric stake distribution switchgear cabinet is connected by power line with each charging pile in charging station, and provides electric power for each charging pile in charging station,
Charging pile provides charging power for electric automobile, and energy-storage system incoming line cabinet is connected with energy-storage system distribution switchgear cabinet by busbar,
Energy-storage system distribution switchgear cabinet is connected by busbar with reversible transducer cabinet, converter power distribution cabinet by power cable respectively with storage
Multiple energy storage devices in energy system are connected, and charging power, charging pile incoming line switch cabinet and energy-storage system are provided for energy storage device
Incoming line switch cabinet is connected with bus connection switch cabinet, installing bus connection switch in bus connection switch cabinet, between two-way incoming line switch cabinet
Contact.In addition, charging pile incoming line switch cabinet, energy-storage system incoming line switch cabinet, bus connection switch cabinet, charging pile distribution switchgear cabinet,
Energy-storage system distribution switchgear cabinet, reversible transducer cabinet, electric energy meter is provided with charging pile, for counting purchase of electricity or sale of electricity
Amount.
Distribution system uses single-trunk segmental wiring, and bus I is connected with the switch K1 in energy-storage system incoming line switch cabinet, storage
Transformer T1, switch K1 and complex protection device, transformer T1 is respectively arranged with energy system incoming line switch cabinet with power network to be connected to obtain
Incoming power is taken, bus I is also connected with transformer T3 in reversible transducer cabinet, and transformer is respectively arranged with reversible transducer cabinet
T3, reversible transducer and complex protection device, reversible transducer are connected with each energy storage device in energy-storage system respectively by power cable,
Bus II is connected with the switch K2 in charging pile incoming line switch cabinet, be respectively arranged with charging pile incoming line switch cabinet transformer T2,
Switch K2 and complex protection device, transformer T2 is connected with power network to obtain incoming power, bus II also with charging pile distribution switchgear cabinet
Interior transformer T4 is connected, and charging pile distribution switchgear cabinet is connected with each charging pile respectively by power cable.
When first via incoming power dead electricity, switch K1 disconnects, and switchs K2 and K3 closures, now, by the second road inlet wire electricity
Source provides working power for energy-storage system and charging pile simultaneously, and when first via incoming power recovers normal, switch K3 disconnects, and opens
K1 closures are closed, energy-storage system power supply is stood alone as by first via incoming power；When the second road incoming power dead electricity, switch K2 breaks
Open, switch K1 and K3 closures, now, working power is provided simultaneously for energy-storage system and charging pile by first via incoming power, when
When second road incoming power recovers normal, switch K3 disconnects, and switch K2 closures, stands alone as charging pile by the second road incoming power and supplies
Electricity.
Reversible transducer three-phase input AC power Vga, Vgb, Vgc respectively with input filter and matrix converter phase
Even, three-phase alternating-current supply is changed into single phase ac by matrix converter by the control at the semiconductor switch conducts angle to its inside
Electricity, and the single-phase alternating current is inputted into transformer, the alternating current exported after transformer transformation is inputted into rectification circuit,
The direct current of rectifier output charges for battery.
Matrix converter is made up of 12 thyristors and 12 diodes, and each semiconductor switch is in parallel one
Diode forms a switch module, and two switch modules are composed in series a switch combination, and switch combination is in three-phase bridge like point
Cloth, three-phase alternating-current supply Vga, Vgb, Vgc are separately input into the intermediate point of bridge like distribution.Wherein, semiconductor switch can be
PMOS switch or nmos switch, 12 semiconductor switch connect as follows, switch Sa2 drain electrode and the power supply of transformer
Input point P connections, the drain electrode of Sa2 source electrode with switching Sa1 be connecteds, Sa1 the source electrode drain electrode with switch San1 and power supply respectively
Vga output ends are connected, and drain electrode of the San1 source electrode with switching San2 is connected, and switchs San2 source electrode and the power input of transformer
Point N connections, Sb2 drain electrode and the power input point P connections of transformer being switched, drain electrode of the Sb2 source electrode with switching Sb1 is connected,
Sb1 source electrode is connected with the drain electrode and power supply Vgb output ends for switching Sbn1 respectively, and the drain electrode of Sbn1 source electrode and switch Sbn2 connects
Connect, switch the power input point N connections of Sbn2 source electrode and transformer, switch Sc2 drain electrode and the power input point P of transformer
Connection, drain electrode of the Sc2 source electrode with switching Sc1 are connected, and Sc1 source electrode exports with the drain electrode and power supply Vgc for switching Scn1 respectively
End connection, drain electrode of the Scn1 source electrode with switching Scn2 are connected, and the power input point N of the source electrode and transformer that switch Scn2 connects
Connect.
The on or off of semiconductor switch is controlled by controller, and controller includes phase detection module, adder Module, fan
Area's selecting module, switch space vector selecting module, angle adjustment module, pulsewidth computing module and switch triggering command module.
Wherein, phase detection module calculates the space vector angle of power network input three-phase voltage, and adder passes through the sky that inputs power network
Between azimuth and set angle subtract each other to obtain desired space vector angle, sector selecting module and space vector selecting module according to
Desired space vector angle determines the switch of conducting, and angle adjustment module and pulsewidth computing module are according to desired space vector angle
It is determined that the conducting pulsewidth of conducting switch, switch triggering command module is sent out according to the conducting switch and corresponding conducting pulsewidth that receive
Go out the triggering command of 12 semiconductor switch.
The switch conduction sequential of reversible transducer is as follows：Sa1, Sa2, Sbn1 are switched, Sbn2 conductings, switchs Sb1, Sb2,
Sc1, Sc2, San1, San2, Scn1, Scn2 are turned off, and now, transformer input voltage is Vab=Vga-Vgb；Sa1, Sa2 are switched,
Scn1, Scn2 turn on, switch Sb1, Sb2, Sc1, Sc2, San1, San2, Sbn1, Sbn2 shut-off, now, transformer input voltage
For Vac=Vga-Vgc；Sb1, Sb2, Scn1 are switched, Scn2 conductings, switchs Sa1, Sa2, Sc1, Sc2, San1, San2, Sbn1,
Sbn2 is turned off, and now, transformer input voltage is Vbc=Vgb-Vgc；Sb1, Sb2, San1 are switched, San2 conductings, switchs Sa1,
Sa2, Sc1, Sc2, Sbn1, Sbn2, Scn1, Scn2 are turned off, and now, transformer input voltage is Vba=Vb-Va；Switch Sc1,
Sc2, San1, San2 are turned on, and switch Sa1, Sa2, Sb1, Sb2, Sbn1, Sbn2, Scn1, Scn2 shut-offs, now, transformer inputs
Voltage is Vca=Vc-Va；Sc1, Sc2, Sbn1 are switched, Sbn2 conductings, switchs Sa1, Sa2, Sb1, Sb2, San1, San2, Scn1,
Scn2 is turned off, and now, transformer input voltage is Vcb=Vgc-Vgb.
Network load is gentlier in trough period, and energy-storage system power purchase and carries out power storage at power network, now, charging
Charging pile of standing directly by grid power is charging electric vehicle, and crest period, charging station charging are in when network load is heavier
Stake by energy-storage system be charging electric vehicle, electric to distributed power source repurchase with high price when power network be in serious low ebb period
Power and repurchase electricity price is when be higher than charging station sale of electricity electricity price, energy-storage system is to power network sale electric energy.
When charging station charging station affiliated for grid company, the energy-storage system operational objective of charging station is electric power netting safe running
Benefit, after energy-storage system is participated in into network load regulation, network load variance minimum is used as object function, with equation below table
Show：, n be one day in load point number, by when
Between yardstick be taken as 1 hour, n takes 24, during with from when 0 to 23, t takes 1 respectively, 2 ..., 24,For the load power of t
Value,For the net side performance number of t energy-storage battery, energy-storage system power constraint：,For the DC side performance number of t energy-storage system,For the maximum charge-discharge electric power of energy-storage system DC side,For
The minimum charge-discharge electric power of energy-storage system DC side；The capacity-constrained of energy-storage system：,,,,, in formula,For the storage at t end
Energy power system capacity,For the upper limit of energy storage system capacity,For energy storage system capacity lower limit；Energy storage system discharges number is about
Beam：, in formula, k is discharge time,Limit for discharge time, used according to above-mentioned object function and constraints
Traditional gradient algorithm solvesOptimal solution, according to optimal solutionGenerate the control instruction of reversible transducer so that double
Exported to controller and specify power, make grid load curve flat.
When charging station charging station affiliated for non-grid company, charging station economic benefit operation object function, with following public affairs
Formula represents：, in formula, a is weight system
Number,,For the daily amount of depreciation of cost of investment,For daily O＆M cost,, in formula,State-of-charge when starting for continuous discharge,State-of-charge at the end of for continuous discharge,For the cost of investment amount of depreciation of complete discharge and recharge once,, in formula,For operating cost coefficient,For maintenance cost system
Number,For day discharge electricity amount,Be maximum discharge power, time scale be taken as 1 hour, n takes 24, with from when 0 to 23
When, t takes 1 respectively, 2 ..., 24,For the load power value of t,For the net side performance number of i moment energy-storage batteries,
Gone out using Pareto Algorithm for SolvingOptimal solution, according to optimal solutionGenerate the control instruction of reversible transducer so that
Power is specified in reversible controller output, maximizes charging station economic well-being of workers and staff.
Implement the electric automobile charging station of the present invention, have the advantages that, reduce conventional power generation usage unit in power network
The capacity of startup-shutdown number and spinning reserve so that grid load curve is as far as possible steady, furthermore it is possible to reduce charging station in power network
Load is heavier and when tou power price is higher, avoids high electricity price, reduces charging station operating cost, can improve the reliable of charge power supply
Property, ensure that charging station uninterruptedly provides charge power supply for electric automobile, reversible transducer causes charging station to turn into power network sale of electricity
May, can also improve electric energy instruction reduces current fluctuation, and power factor is controlled well.
Brief description of the drawings
Fig. 1 is the system layout of charging station of the present invention.
Fig. 2 is the main wiring diagram of charging station distribution system.
Fig. 3 is reversible transducer circuit diagram.
Fig. 4 is power trade schematic diagram.
Embodiment
Fig. 1 is the system layout of the charging station of the present invention：Vehicle charging station mainly includes in Fig. 1：Power network 101 passes through electricity
First via power supply 102 that the line of force provides, the second road power supply 103, energy-storage system incoming line switch cabinet 104, bus connection switch cabinet 105, fill
Electric stake incoming line switch cabinet 106, charging pile distribution switchgear cabinet 107, energy-storage system distribution switchgear cabinet 108, reversible transducer cabinet 109,
Energy-storage system 110, charging pile 111 and charging server.Charging pile incoming line switch cabinet, energy-storage system incoming line switch cabinet respectively with electricity
Net is connected, and energy-storage system incoming line cabinet obtains charging station first via incoming power at power network, and charging pile incoming line cabinet obtains at power network
The second road incoming power is obtained, charging pile incoming line switch cabinet is connected by busbar with charging pile power distribution cabinet, charging pile distribution switchgear cabinet
It is connected by power line with each charging pile in charging station, and electric power is provided for each charging pile in charging station, charging pile is electronic vapour
Car provides charging power, and energy-storage system incoming line cabinet is connected with energy-storage system distribution switchgear cabinet by busbar, and energy-storage system, which is matched somebody with somebody, to be established by cable
Close cabinet be connected by busbar with reversible transducer cabinet, converter power distribution cabinet by power cable respectively with it is multiple in energy-storage system
Energy storage device is connected, and charging power is provided for energy storage device.Charging pile incoming line switch cabinet and energy-storage system incoming line switch cabinet with
Bus connection switch cabinet is connected, installing bus connection switch in bus connection switch cabinet, for the contact between two-way incoming line switch cabinet.In addition, fill
Electric stake incoming line switch cabinet, energy-storage system incoming line switch cabinet, bus connection switch cabinet, charging pile distribution switchgear cabinet, energy-storage system, which are matched somebody with somebody, to be established by cable
Close cabinet, reversible transducer cabinet, be provided with electric energy meter on charging pile, for counting purchase of electricity or electricity sales amount.
Fig. 2 is the main wiring diagram of charging station distribution system：First via power supply 201, the second road power supply 202, first paragraph bus
203rd, second segment bus 204, reversible transducer 205, energy-storage system 206, charging pile 207.
The distribution system uses single-trunk segmental wiring, wherein, in first paragraph bus 203 and energy-storage system incoming line switch cabinet
Switch K1 be connected, transformer T1, switch K1 and complex protection device, transformer T1 are respectively arranged with energy-storage system incoming line switch cabinet
It is connected with power network to obtain incoming power.First paragraph bus is also connected with transformer T3 in reversible transducer cabinet, reversible transducer
Be respectively arranged with transformer T3, reversible transducer 205 and complex protection device in cabinet, reversible transducer by power cable respectively with storage
Each energy storage device is connected in energy system.Second segment bus 204 is connected with the switch K2 in charging pile incoming line switch cabinet, and charging pile enters
Transformer T2, switch K2 and complex protection device are respectively arranged with wiretap cabinet, transformer T2 is connected with power network to obtain inlet wire electricity
Source.Second segment bus is also connected with transformer T4 in charging pile distribution switchgear cabinet, and charging pile distribution switchgear cabinet passes through power cable
It is connected respectively with each charging pile.When first via power loss, switch K1 disconnects, and K2 and K3 closures is switched, now, by second
Road power supply provides working power for energy-storage system and charging pile simultaneously, and when first via power up is normal, switch K3 disconnects, and opens
K1 closures are closed, energy-storage system power supply is stood alone as by first via power supply；When the second road power loss, switch K2 disconnects, and switchs K1
Closed with K3, now, working power is provided simultaneously for energy-storage system and charging pile by first via power supply, when the second road power up
When normal, switch K3 disconnects, and switch K2 closures, charging pile power supply is stood alone as by the second road power supply.
Fig. 3 is reversible transducer circuit diagram：In Fig. 3 three-phase alternating-current supply Vga, Vgb, Vgc from power network respectively with it is defeated
Enter wave filter with matrix converter to be connected, matrix converter is by the control at the semiconductor switch conducts angle to its inside by three-phase
AC power is changed into single-phase alternating current, and the single-phase alternating current is inputted into transformer, is exported after transformer transformation
Alternating current is inputted into rectification circuit, and the direct current of rectifier output charges for battery.Matrix converter is by 12 semiconductors
Switch element and 12 diode compositions, each semiconductor switch diode in parallel form a switch module, and two are opened
Close block coupled in series and form a switch combination, switch combination is distributed in three-phase bridge like, three-phase alternating-current supply Vga, Vgb, Vgc difference
Input to the intermediate point of bridge like distribution.Wherein, semiconductor switch can be PMOS switch or nmos switch, 12 semiconductor switch
Connect as follows, switch Sa2 drain electrode and the power input point P connections of transformer, Sa2 source electrode is with switch Sa1's
Drain electrode connection, Sa1 source electrode are connected with the drain electrode and power supply Vga output ends for switching San1 respectively, San1 source electrode and switch
San2 drain electrode connection, switchs the power input point N connections of San2 source electrode and transformer, switchs Sb2 drain electrode and transformer
Power input point P connections, the drain electrode of Sb2 source electrode with switching Sb1 be connected, the Sb1 source electrode drain electrode with switch Sbn1 respectively
Connected with power supply Vgb output ends, drain electrode of the Sbn1 source electrode with switching Sbn2 is connected, and switchs Sbn2 source electrode and the electricity of transformer
Source input point N connections, switch Sc2 drain electrode and the power input point P connections of transformer, the drain electrode of Sc2 source electrode and switch Sc1
Connection, Sc1 source electrode are connected with the drain electrode and power supply Vgc output ends for switching Scn1 respectively, and Scn1 source electrode is with switch Scn2's
Drain electrode connection, switchs the power input point N connections of Scn2 source electrode and transformer.The on or off of semiconductor switch is by controlling
Device controls, and controller includes phase detection module, adder Module, sector selecting module, switchs space vector selecting module, angle
Adjusting module, pulsewidth computing module and switch triggering command module.Wherein, phase detection module calculates power network input three-phase voltage
Space vector angle, adder subtracts each other to obtain desired space by the space vector angle that inputs power network and set angle swears
Angulation, sector selecting module and space vector selecting module determine the switch of conducting according to desired space vector angle, and angle is adjusted
Mould preparation block and pulsewidth computing module determine the conducting pulsewidth of conducting switch, switch triggering order mould according to desired space vector angle
Root tuber sends the triggering command of 12 semiconductor switch according to the conducting switch and corresponding conducting pulsewidth that receive.During switch conduction
Sequence can be as follows：Sa1, Sa2, Sbn1 are switched, Sbn2 conductings, switchs Sb1, Sb2, Sc1, Sc2, San1, San2, Scn1, Scn2
Shut-off, now, transformer input voltage is Vab=Vga-Vgb；Sa1, Sa2, Scn1 are switched, Scn2 conductings, switchs Sb1, Sb2,
Sc1, Sc2, San1, San2, Sbn1, Sbn2 are turned off, and now, transformer input voltage is Vac=Vga-Vgc；Sb1, Sb2 are switched,
Scn1, Scn2 turn on, switch Sa1, Sa2, Sc1, Sc2, San1, San2, Sbn1, Sbn2 shut-off, now, transformer input voltage
For Vbc=Vgb-Vgc；Sb1, Sb2, San1 are switched, San2 conductings, switchs Sa1, Sa2, Sc1, Sc2, Sbn1, Sbn2, Scn1,
Scn2 is turned off, and now, transformer input voltage is Vba=Vb-Va；Sc1, Sc2, San1 are switched, San2 conductings, switchs Sa1,
Sa2, Sb1, Sb2, Sbn1, Sbn2, Scn1, Scn2 are turned off, and now, transformer input voltage is Vca=Vc-Va；Switch Sc1,
Sc2, Sbn1, Sbn2 are turned on, and switch Sa1, Sa2, Sb1, Sb2, San1, San2, Scn1, Scn2 shut-offs, now, transformer inputs
Voltage is Vcb=Vgc-Vgb.
Fig. 4 is power trade schematic diagram：Power network 301, energy-storage system 302, charging pile 303.Network load is gentlier in ripple
Paddy period, energy-storage system power purchase and carry out power storage at power network, and now, charging station charging pile is directly by grid power
Charging electric vehicle, crest period is in when network load is heavier, charging station charging pile is filled by energy-storage system for electric automobile
Electricity.When power network is in serious low ebb period, electric power is bought back to distributed power source with high price and repurchase electricity price is higher than charging station sale of electricity
During electricity price, energy-storage system sells electric energy to power network.
When charging station charging station affiliated for grid company, the energy-storage system operational objective of charging station is electric power netting safe running
Benefit, after energy-storage system is participated in into network load regulation, network load variance minimum is used as object function, with equation below table
Show：, n be one day in load point number, by when
Between yardstick be taken as 1 hour, n takes 24, during with from when 0 to 23, t takes 1 respectively, 2 ..., 24,For the load power of t
Value,For the net side performance number of t energy-storage battery, energy-storage system power constraint：,For the DC side performance number of t energy-storage system,For the maximum charge-discharge electric power of energy-storage system DC side,For
The minimum charge-discharge electric power of energy-storage system DC side；The capacity-constrained of energy-storage system：,,,,, in formula,For t end
Energy storage system capacity,For the upper limit of energy storage system capacity,For energy storage system capacity lower limit；Energy storage system discharges number
Constraint：, in formula, k is discharge time,Limit for discharge time, adopted according to above-mentioned object function and constraints
Solved with traditional gradient algorithmOptimal solution, according to optimal solutionGenerate the control instruction of reversible transducer so that
Power is specified in reversible controller output, makes grid load curve flat.
When charging station charging station affiliated for non-grid company, charging station economic benefit operation object function, with following public affairs
Formula represents：, in formula, a is weight coefficient,,For the daily amount of depreciation of cost of investment,For daily O＆M cost,,
In formula,State-of-charge when starting for continuous discharge,State-of-charge at the end of for continuous discharge,For
The complete cost of investment amount of depreciation of discharge and recharge once,, in formula,For operation into
This coefficient,For maintenance cost coefficient,For day discharge electricity amount,It is maximum discharge power, time scale is taken as 1
Hour, n takes 24, during with from when 0 to 23, t takes 1 respectively, 2 ..., 24,For the load power value of t,For the i moment
The net side performance number of energy-storage battery, is gone out using Pareto Algorithm for SolvingOptimal solution, according to optimal solutionGenerate two-way change
The control instruction of parallel operation so that power is specified in reversible controller output, maximizes charging station economic well-being of workers and staff.
The invention is not restricted to the disclosed embodiments and accompanying drawing, it is intended to which covering falls into each of spirit and scope of the present invention
Kind change and deformation.
Claims (10)
1. a kind of electric automobile charging station with energy-storage system, it includes：Charging pile incoming line switch cabinet, energy-storage system service entrance switch
Cabinet, bus connection switch cabinet, charging pile distribution switchgear cabinet, energy-storage system distribution switchgear cabinet, reversible transducer cabinet, charging pile and charging clothes
Business device, it is characterised in that：Charging pile incoming line switch cabinet, energy-storage system incoming line switch cabinet are connected with power network respectively, and energy-storage system enters
Line cabinet obtains charging station first via incoming power at power network, and charging pile incoming line cabinet obtains the second road of charging station inlet wire at power network
Power supply, charging pile incoming line switch cabinet are connected by busbar with charging pile power distribution cabinet, charging pile distribution switchgear cabinet by power line with
Each charging pile is connected in charging station, and energy-storage system incoming line cabinet is connected with energy-storage system distribution switchgear cabinet by busbar, energy-storage system
Distribution switchgear cabinet is connected by busbar with reversible transducer cabinet, reversible transducer cabinet by power cable respectively with energy-storage system
Multiple energy storage devices be connected, charging pile incoming line switch cabinet and energy-storage system incoming line switch cabinet are connected with bus connection switch cabinet, female
Join installing bus connection switch K3 in switch cubicle, for the contact between two-way incoming line switch cabinet.
2. the electric automobile charging station according to claim 1 with energy-storage system, it is characterised in that：Charging station distribution system
Using single-trunk segmental wiring mode, bus I is connected with the switch K1 in energy-storage system incoming line switch cabinet, and energy-storage system inlet wire is opened
Transformer T1, switch K1 and complex protection device, transformer T1 is respectively arranged with the cabinet of pass with power network to be connected to obtain incoming power, it is female
Line I is also connected with transformer T3 in reversible transducer cabinet, and transformer T3, reversible transducer are respectively arranged with reversible transducer cabinet
And complex protection device, bus II are connected with the switch K2 in charging pile incoming line switch cabinet, set respectively in charging pile incoming line switch cabinet
Have transformer T2, a switch K2 and complex protection device, transformer T2 is connected with power network to obtain incoming power, bus II also with charging pile
Transformer T4 is connected in distribution switchgear cabinet, and charging pile distribution switchgear cabinet is connected with each charging pile respectively by power cable.
3. the electric automobile charging station according to claim 2 with energy-storage system, it is characterised in that：When first via inlet wire electricity
During the dead electricity of source, switch K1 disconnects, switch K2 and switch K3 closures, now, by the second road incoming power simultaneously for energy-storage system and
Charging pile provides working power, and when first via incoming power recovers normal, switch K3 disconnects, switch K1 closures, by the first via
Incoming power stands alone as energy-storage system power supply；When the second road incoming power dead electricity, switch K2 is disconnected, and switch K1 and switch K3 are closed
Close, now, working power is provided simultaneously for energy-storage system and charging pile by first via incoming power, when the second road incoming power is extensive
When multiple normal, switch K3 disconnects, and switch K2 closures, charging pile power supply is stood alone as by the second road incoming power.
4. the electric automobile charging station according to claim 1 with energy-storage system, it is characterised in that：Reversible transducer three-phase
Input ac power Vga, Vgb, Vgc are connected with input filter and matrix converter respectively, and matrix converter passes through in it
Three-phase alternating-current supply is changed into single-phase alternating current by the control at the semiconductor switch conducts angle in portion, and the single-phase alternating current is inputted
Into transformer, the alternating current exported after transformer transformation is inputted into rectification circuit, and the direct current of rectifier output is storage
Battery charges.
5. the electric automobile charging station according to claim 4 with energy-storage system, it is characterised in that：Matrix converter is by 12
Individual thyristor and 12 diode compositions, each semiconductor switch diode in parallel form a switching molding
Block, two switch modules are composed in series a switch combination, and switch combination is distributed in three-phase bridge like, three-phase alternating-current supply Vga,
Vgb, Vgc are separately input into the intermediate point of bridge like distribution, wherein, semiconductor switch can be PMOS switch or nmos switch, 12
Individual semiconductor switch connects as follows, switchs Sa2 drain electrode and the power input point P connections of transformer, Sa2 source electrode
It is connected with the drain electrode for switching Sa1, Sa1 source electrode is connected with the drain electrode and power supply Vga output ends for switching San1 respectively, San1 source
Drain electrode of the pole with switching San2 is connected, and is switched the power input point N connections of San2 source electrode and transformer, is switched Sb2 drain electrode
Be connected with the power input point P of transformer, the drain electrode of Sb2 source electrode with switching Sb1 is connected, Sb1 source electrode respectively with switch
Sbn1 drain electrode is connected with power supply Vgb output ends, and the drain electrode of Sbn1 source electrode with switching Sbn2 be connected, switch Sbn2 source electrode and
The power input point N connections of transformer, Sc2 drain electrode and the power input point P connections of transformer are switched, Sc2 source electrode is with opening
Close Sc1 drain electrode connection, Sc1 source electrode be connected with the drain electrode and power supply Vgc output ends for switching Scn1 respectively, Scn1 source electrode and
Scn2 drain electrode connection is switched, switchs the power input point N connections of Scn2 source electrode and transformer.
6. the electric automobile charging station according to claim 4 with energy-storage system, it is characterised in that：Semiconductor switch is led
Logical or shut-off is controlled by controller, and controller includes phase detection module, adder Module, sector selecting module, switch space arrow
Selecting module, angle adjustment module, pulsewidth computing module and switch triggering command module are measured, it is defeated that phase detection module calculates power network
Enter the space vector angle of three-phase voltage, adder is subtracted each other and must expired with set angle by the space vector angle for inputting power network
The space vector angle of prestige, sector selecting module and space vector selecting module determine opening for conducting according to desired space vector angle
Close, angle adjustment module and pulsewidth computing module determine to turn on the conducting pulsewidth of switch according to desired space vector angle, switch
Trigger command module sends the triggering command of 12 semiconductor switch according to the conducting switch and corresponding conducting pulsewidth that receive.
7. the electric automobile charging station according to claim 1 with energy-storage system, it is characterised in that：Network load is gentlier located
In trough period, energy-storage system power purchase and carries out power storage at power network, and now, charging station charging pile directly passes through power network electricity
Power is charging electric vehicle, is in crest period when network load is heavier, charging station charging pile is electronic vapour by energy-storage system
Car charges, and when power network is in serious low ebb period, energy-storage system sells electric energy to power network.
8. the electric automobile charging station according to claim 7 with energy-storage system, it is characterised in that：When charging station is power network
During the affiliated charging station of company, the energy-storage system operational objective of charging station is electric power netting safe running benefit, and energy-storage system is participated in into electricity
After net Load Regulation, network load variance minimum is used as object function, is represented with equation below：, n is the number of load point in one day, and time scale is taken as
1 hour, n took 24, during with from when 0 to 23, t takes 1 respectively, 2 ..., 24,For the load power value of t,For t
The net side performance number of energy-storage battery, energy-storage system power constraint：,For the straight of t energy-storage system
Side performance number is flowed,For the maximum charge-discharge electric power of energy-storage system DC side,For the minimum discharge and recharge of energy-storage system DC side
Power；The capacity-constrained of energy-storage system：,,,,, in formula,For t end energy storage system capacity,For the upper limit of energy storage system capacity,For energy storage system
System lower bound of capacity；Energy storage system discharges count constraint：, in formula, k is discharge time,Limit, press for discharge time
Solved according to above-mentioned object function and constraints using traditional gradient algorithmOptimal solution, according to optimal solutionGeneration
The control instruction of reversible transducer so that power is specified in reversible controller output, makes grid load curve flat.
9. the electric automobile charging station according to claim 7 with energy-storage system, it is characterised in that：When charging station is non-electrical
During the affiliated charging station of net company, charging station economic benefit operation object function, represented with equation below：, in formula, a is weight coefficient,,For the daily amount of depreciation of cost of investment,For daily O＆M cost,, in formula,State-of-charge when starting for continuous discharge,State-of-charge at the end of for continuous discharge,To fill completely
The cost of investment amount of depreciation of electric discharge once,, in formula,For operating cost coefficient,For maintenance cost coefficient,For day discharge electricity amount,It is maximum discharge power, time scale is taken as 1 hour, n
Take 24, during with from when 0 to 23, t takes 1 respectively, 2 ..., 24,For the load power value of t,For i moment energy storage electricity
The net side performance number in pond, is gone out using Pareto Algorithm for SolvingOptimal solution, according to optimal solutionGenerate reversible transducer
Control instruction so that power is specified in reversible controller output, maximizes charging station economic well-being of workers and staff.
10. the electric automobile charging station according to claim 1 with energy-storage system, it is characterised in that：Charging pile inlet wire is opened
Close cabinet, energy-storage system incoming line switch cabinet, bus connection switch cabinet, charging pile distribution switchgear cabinet, energy-storage system distribution switchgear cabinet, two-way change
Electric energy meter is provided with parallel operation cabinet, charging pile, for counting purchase of electricity or electricity sales amount.
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| CN201611021220 | 2016-11-21 | ||
| CN2016110212208 | 2016-11-21 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199460A (en) * | 2018-01-19 | 2018-06-22 | 深圳市核达中远通电源技术股份有限公司 | A kind of charging pile control system and control method automatically switched |
| CN109066697A (en) * | 2018-08-09 | 2018-12-21 | 中铁第四勘察设计院集团有限公司 | A kind of energy storage type tramcar supply load adjusting method and system |
| WO2020055778A1 (en) * | 2018-09-11 | 2020-03-19 | 3M Innovative Properties Company | Active battery management method for economic optimization |
| CN110920456A (en) * | 2019-12-31 | 2020-03-27 | 西安特锐德智能充电科技有限公司 | Charging system |
| CN111401713A (en) * | 2020-03-09 | 2020-07-10 | 上海交通大学 | Multi-energy system complementary optimization configuration method based on multi-level energy hub model |
| CN113246785A (en) * | 2021-06-29 | 2021-08-13 | 浙江芯科物联科技股份有限公司 | Intelligent Internet of things equipment charging processing method, equipment and system |
| CN114825319A (en) * | 2021-01-22 | 2022-07-29 | 周雅娟 | Data center power supply system and data center machine room |
| WO2022241858A1 (en) * | 2021-05-18 | 2022-11-24 | 江苏省电力试验研究院有限公司 | Capacity mutual-aid charging station |
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- 2017-10-12 CN CN201710798219.4A patent/CN107528337A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199460A (en) * | 2018-01-19 | 2018-06-22 | 深圳市核达中远通电源技术股份有限公司 | A kind of charging pile control system and control method automatically switched |
| CN109066697A (en) * | 2018-08-09 | 2018-12-21 | 中铁第四勘察设计院集团有限公司 | A kind of energy storage type tramcar supply load adjusting method and system |
| WO2020055778A1 (en) * | 2018-09-11 | 2020-03-19 | 3M Innovative Properties Company | Active battery management method for economic optimization |
| US12092694B2 (en) | 2018-09-11 | 2024-09-17 | 3M Innovative Properties Company | Active battery management method for economic optimization |
| CN110920456A (en) * | 2019-12-31 | 2020-03-27 | 西安特锐德智能充电科技有限公司 | Charging system |
| CN110920456B (en) * | 2019-12-31 | 2024-04-19 | 西安特来电智能充电科技有限公司 | Charging system |
| CN111401713A (en) * | 2020-03-09 | 2020-07-10 | 上海交通大学 | Multi-energy system complementary optimization configuration method based on multi-level energy hub model |
| CN114825319A (en) * | 2021-01-22 | 2022-07-29 | 周雅娟 | Data center power supply system and data center machine room |
| WO2022241858A1 (en) * | 2021-05-18 | 2022-11-24 | 江苏省电力试验研究院有限公司 | Capacity mutual-aid charging station |
| CN113246785A (en) * | 2021-06-29 | 2021-08-13 | 浙江芯科物联科技股份有限公司 | Intelligent Internet of things equipment charging processing method, equipment and system |
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Application publication date: 20171229 |