CN205960661U - System for electric automobile charging station active participation electric wire netting is adjusted - Google Patents
System for electric automobile charging station active participation electric wire netting is adjusted Download PDFInfo
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- CN205960661U CN205960661U CN201620919454.3U CN201620919454U CN205960661U CN 205960661 U CN205960661 U CN 205960661U CN 201620919454 U CN201620919454 U CN 201620919454U CN 205960661 U CN205960661 U CN 205960661U
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- 230000008859 change Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000009711 regulatory function Effects 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
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- 238000004458 analytical method Methods 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
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- 238000004134 energy conservation Methods 0.000 description 2
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- 230000003068 static effect Effects 0.000 description 2
- SEPPVOUBHWNCAW-FNORWQNLSA-N (E)-4-oxonon-2-enal Chemical compound CCCCCC(=O)\C=C\C=O SEPPVOUBHWNCAW-FNORWQNLSA-N 0.000 description 1
- LLBZPESJRQGYMB-UHFFFAOYSA-N 4-one Natural products O1C(C(=O)CC)CC(C)C11C2(C)CCC(C3(C)C(C(C)(CO)C(OC4C(C(O)C(O)C(COC5C(C(O)C(O)CO5)OC5C(C(OC6C(C(O)C(O)C(CO)O6)O)C(O)C(CO)O5)OC5C(C(O)C(O)C(C)O5)O)O4)O)CC3)CC3)=C3C2(C)CC1 LLBZPESJRQGYMB-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a system for electric automobile charging station active participation electric wire netting is adjusted, including series connection converter, parallelly connected converter, direct current energy storage system, the series connection converter parallelly connected converter respectively with the direct current energy storage system be connected, the series connection converter is established ties to connect through filter inductor, electric capacity, coupling transformer and is inclined at electric network source, parallelly connected converter is in filter inductor, capacitance parallel connection insert the electric wire netting, it is right that direct current energy storage system passes through the electric wire netting parallelly connected converter charges. The utility model discloses when the conventionality realizes charging to electric automobile, effectively active power, reactive power, the clamping voltage of compensation area electric wire netting fluctuate, electric energy quality problems such as the offset voltage falls, wave distortion, unbalanced three phase, active participation that again can the full play charging station joins in marriage the net regulatory function, has extensive application prospect.
Description
Technical field
This utility model is related to the system that a kind of electric automobile charging station is actively engaged in electrical network regulation, belongs to network system and changes
Enter power quality control technology field.
Background technology
Increasingly heat up with world energy sources situation growing tension with to the attention rate of energy-saving and emission-reduction, electric automobile
(Electric Vehicle, EV) because its environmental protection, the good characteristic of energy-conservation and extremely people praise highly.Therefore, each big automobile in the whole world
Company and some scientific research institutions also constantly put into the new electric automobile of substantial amounts of energy exploitation, and this also makes the number of electric automobile
Amount rapidly adds.The pure electric drive of Domestic Automotive Industry as the main strategic direction of technology shifts, key breakthrough motor technology,
Electronic control technology and battery technology, the industrialization of propulsion EV, realize auto industry great-leap-forward development.Actively popularize energy-conservation at present
It is contemplated that the year two thousand twenty, China EV is intended to more than 5,000,000 automobile.After the extensive popularization of electric automobile, electrical network system is undoubtedly
To be more complicated.Ingeniously the electric automobile of big quantity carries out unordered charging it is likely that can bring greatly to electrical network if so
Burden, moreover how the battery of electric automobile, as a huge power storage element, to play its sharpest edges and make electricity
Energy effectively utilizes, are also an extensively concerned focus.
The impact to electrical network for the popularization of EV is mainly reflected in：First, substantial amounts of EV access grid charging will cause load
Long.If the charging for EV all concentrates on the load peak phase, this will be further exacerbated by the difference of the peak valley of power system load, from
And increase the burden of power system.Secondly, the extensive charging of EV will increase the difficulty that operation of power networks is controlled.Due to car owner's
Time of using cars and charging interval are difficult to be also impossible to unification so that the charging of EV has larger uncertainty, and this will make electrical network
Control more difficult.Then, substantial amounts of EV charges and will certainly affect the quality of power supply.The load that EV charges belongs to nonlinear-load,
Used power electronic equipment that it is charged will certainly produce certain harmonic wave, and this will will necessarily cause electricity to a certain extent
Can quality problems.Finally, accessing of EV can propose new planning and requirement to power distribution network.Need with the popularization power distribution network of EV
Plus substantial amounts of electrically-charging equipment is its charging, due to that it changes load configuration and the characteristic of power distribution network, thus leading to traditional
Distribution network planning then possibly cannot be suitable for.Therefore, orderly discharge and recharge is electric automobile in the form of controllable burden or controlled energy storage
Participate in power grid regulation, as effectively evading electric automobile extensive charging, the important means that electrical network adversely affects is received
Extensive concern.
Meanwhile, with the generally existing of electric automobile, electric automobile charging station also will be essential, because it takes up an area big throwing
Money many, make full use of EV charging station coordinate electrical network regulation and control become countries in the world study direction.On the other hand, for
At present increasingly serious power quality problem, the quality of power supply that tradition proposes change for method have shnt capacitor, synchronous capacitor,
Static compensator and ULTC.But the appearance of the appearance with increasingly sophisticated electric network composition, especially micro-capacitance sensor,
These compensation devices are not the methods of best solution power quality problem.With the fast development of Power Electronic Technique, electric power
The innovation of electronic device, the continuing to optimize of control technology, the respective application of digital processing, high performance power electronic equipment becomes
Improve the object of study of the quality of power supply.
Utility model content
The purpose of this utility model is, overcomes the defect that prior art exists, and proposes a kind of electric automobile charging station master
The dynamic system participating in electrical network regulation.
This utility model adopts the following technical scheme that：A kind of electric automobile charging station is actively engaged in the system of electrical network regulation,
It is characterized in that, including series converter, parallel converters, DC energy storage system, described series converter, described parallel connection unsteady flow
Device is connected with described DC energy storage system respectively, inductance, electric capacity, the coupling transformer series connection after filtering of described series converter
It is connected on electric network source side, inductance, electric capacity parallel connection access in electrical network described parallel converters after filtering, described DC energy storage system
By electrical network, described parallel converters are charged.
Preferably, DC energy storage system includes one-level two-way DC/DC changer, dc bus, several two grades of two-way DC/
Electric automobile, controlling system of standing in DC changer, several stations, one-level two-way DC/DC changer is connected with dc bus,
Dc bus DC/DC two-way with two grades changer is connected, and two grades of two-way DC/DC changers are connected with electric automobile in station,
Standing, DC/DC changer two-way with one-level, dispatching of power netwoks department are connected controlling system respectively, and controlling system of standing is used for realizing
The control of all two-way DC/DC changers, stand in information gathering and with dispatching of power netwoks division communication.
Preferably, one-level two-way DC/DC changer and two grades of two-way DC/DC changers utilize the PWM unsteady flow in charging station
Device and DC/DC convertor controls are two-way, using the batteries of electric automobile in charging station as part energy storage device, build electronic vapour
Car charging station is actively engaged in the system of electrical network regulation；One-level two-way DC/DC changer is used for changing electric pressure and realizes isolation, and two
The two-way DC/DC changer of level realizes charged in parallel or to electrical network electric discharge for unifying electric automobile voltage.
The beneficial effect that this utility model is reached：This utility model achieves by entering to the electric automobile in charging station
Effective management of charging and discharging of row, to realize the real-time information interaction between charging station and electrical network, makes the electric automobile group's discharge and recharge in station
Time and power are controlled in real time, and the Unified Power Quality Controller structure secondly being built using charging station existing resource simultaneously realizes electricity
Electrical automobile improves the quality of power supply of regional distribution network in the case of charging normal, meet user's quality supply demand, and in electrical network
During emergency, electric automobile charging station microgrid is operated under island mode, discharged in order to weight using electric automobile group in station
Load is wanted to realize the effect of reliable continued power.
Brief description
Fig. 1 is the structural representation of the system that a kind of electric automobile charging station of the present utility model is actively engaged in electrical network regulation
Figure.
Fig. 2 is the structural representation of DC energy storage system of the present utility model.
Fig. 3 is the theory diagram of the system that a kind of electric automobile charging station of the present utility model is actively engaged in electrical network regulation.
The implication of in figure labelling：1- series converter, 2- parallel converters, 3- DC energy storage system, the two-way DC/ of 4- one-level
DC changer, 5- dc bus, the two-way DC/DC charger of bis- grades of 6-, electric automobile in 7- station, 8- station controlling system.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described.Following examples are only used for this is clearly described
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
Fig. 1 is the structural representation of the system that a kind of electric automobile charging station of the present utility model is actively engaged in electrical network regulation
Figure.The utility model proposes a kind of electric automobile charging station is actively engaged in the system of electrical network regulation it is characterised in that including series connection
Current transformer 1, parallel converters 2, DC energy storage system 3, described series converter 1, described parallel converters 2 are straight with described respectively
Stream energy-storage system 3 be connected, described series converter 1 after filtering inductance, electric capacity, coupling transformer series connection in electric network source
Side, inductance, electric capacity parallel connection access in electrical network described parallel converters 2 after filtering, and described DC energy storage system 3 passes through electrical network pair
Described parallel converters 2 charge.
Fig. 2 is the structural representation of DC energy storage system of the present utility model.It is double that described DC energy storage system 3 includes one-level
Into DC/DC changer 4, dc bus 5, several two grades two-way DC/DC changers 6, several stations electric automobile 7, stand in
Control system 8, the two-way DC/DC changer 4 of described one-level is connected with described dc bus 5, described dc bus 5 and described two
The two-way DC/DC changer 6 of level is connected, and described two grades of two-way DC/DC changers 6 are connected with electric automobile 7 in described station, institute
DC/DC changer 4 two-way with described one-level, dispatching of power netwoks department are connected respectively to state station controlling system 8, control in described station
System 8 be used for realize the control of all two-way DC/DC changers, stand in information gathering and with dispatching of power netwoks division communication.
The described two-way DC/DC changer 4 of one-level and described two grades of two-way DC/DC changers 6 utilize the PWM in charging station to become
Stream device and DC/DC convertor controls are two-way, using the batteries of electric automobile in charging station as part energy storage device, build electronic
Vehicle charging station is actively engaged in the system of electrical network regulation；The two-way DC/DC changer 4 of described one-level is used for changing electric pressure to be realized
Isolation, described two grades of two-way DC/DC changers 6 realize charged in parallel or to electrical network electric discharge for unifying electric automobile voltage.
Fig. 3 is the theory diagram of the system that a kind of electric automobile charging station of the present utility model is actively engaged in electrical network regulation.
A kind of electric automobile charging station of the present utility model is actively engaged in the method for the system of electrical network regulation it is characterised in that concrete wrap
Include following steps：
Step SS1 builds electric automobile charging station in charging station and is actively engaged in electrical network regulating system；
Step SS2 adopt specific electrical network interactive electric automobile optimization discharge and recharge strategy, electric automobile charging station to
Electrical network reports the charge power scope of subsequent period, can be within this range according to dispatching requirement pair in order to grid dispatching center
The charge power of next stage is scheduling and regulates and controls, and realizes charge function using series current device 1, thus realizing electric automobile
Close friend's access to electrical network for the charging station；
, in electrical network emergency power off, the electric automobile group in charging station is as reliable continued power power supply to area for step SS3
The important load of domain power distribution network is powered, and is that the emergency maintenance of electrical network gains time it is ensured that the stable operation of electrical network；?
When electrical network and the equal stable operation of electric automobile, electric automobile charging station is being adjusted to the electrical network quality of power supply compensating, and realizes filling
Power station implements actively effectively to administer to the quality of power supply of electrical network, replaces traditional Active Power Filter-APF APF, static reactive-power compensation
Repay that device STACOM, THE UPFC UPQC etc. be large-scale and expensive power quality compensation control system, thus realizing
Whole charging station is real to the quality of power supply of electrical network while externally presenting preferably long firm power input or export
Apply compensation；
Electric automobile charging station described in described step SS3 the electrical network quality of power supply is adjusted compensation specifically include as
Lower step：
, to the quality of power supply information on electrical network and analysis, the harmonic wave of described main inclusion electrical network is electric for step SS31
Flow component, voltage pulsation information, tri-phase unbalance factor, the method for analysis mainly adopts the instantaneous of Japanese scholars Ramulus et Folium Bischofiae Javanicae Thai language proposition
Reactive power theory, to realize, carries out Clarke conversion to the electrical network three-phase current signal of collection by the phase information of voltage
And carrying out the calculating of instantaneous active power, instantaneous reactive power, the Butterworth LPF of design relevant parameter is filtered
Ripple, the quality of power supply information eventually needing to compensate is converted to the compensation of current component；
Step SS32 according to analyze the current component that the needs that obtain compensate design corresponding PID regulator carry out with
Track, and produce the control instruction information of inverter so that inverter output needs the power component compensating to be connected to the grid, offset electricity
The fluctuation situation of net, finally realizes compensation and the control of the quality of power supply.
Fall in generation area distribution network voltage, overvoltage, wave distortion and non-linear, impact, uncompensated load
The power quality problem bringing, makes it equivalent to a non-sine power supply by controlling series converter 1, its effect is then big
Grid branch harmonic impedance with produce corresponding due to phasor difference produced by main line voltage fault, make grid-connected voltage become with
The three-phase voltage of the balanced, symmetrical of main line voltage fundamental positive sequence homophase.Meanwhile, parallel converters 2 are controlled to make it equivalent to one
Non-sinusoidal current source, its effect is then to eliminate the harmonic wave causing in electrical network and injustice due to there is non-linear and uneven skilful load
Weighing apparatus electric current, thus realize electrical network grid-connected for unit power factor.In addition, in parallel converters control DC voltage-stabilizing ring in addition
For stablizing of stable DC busbar voltage.Controlled by the coordination of series converter 1, parallel converters 2, to improve region and to join
Power quality problem in electrical network.
The above is only preferred implementation of the present utility model it is noted that common skill for the art
For art personnel, on the premise of without departing from this utility model know-why, some improvement can also be made and deform, these change
Enter and deform also to should be regarded as protection domain of the present utility model.
Claims (3)
1. a kind of electric automobile charging station is actively engaged in the system of electrical network regulation it is characterised in that including series converter（1）、
Parallel converters（2）, DC energy storage system（3）, described series converter（1）, described parallel converters（2）Straight with described respectively
Stream energy-storage system（3）It is connected, described series converter（1）Inductance, electric capacity, coupling transformer series connection are in electrical network after filtering
Mains side, described parallel converters（2）Inductance, electric capacity parallel connection access in electrical network after filtering, described DC energy storage system（3）Logical
Cross electrical network to described parallel converters（2）Charge.
2. a kind of electric automobile charging station according to claim 1 be actively engaged in electrical network regulation system it is characterised in that
Described DC energy storage system（3）Including one-level two-way DC/DC changer（4）, dc bus（5）, several two grades of two-way DC/DC
Changer（6）, electric automobile in several stations（7）, controlling system of standing（8）, the two-way DC/DC changer of described one-level（4）With
Described dc bus（5）It is connected, described dc bus（5）With described two grades two-way DC/DC changers（6）It is connected, described
Two grades of two-way DC/DC changers（6）With electric automobile in described station（7）It is connected, described station controlling system（8）Respectively with institute
State one-level two-way DC/DC changer（4）, dispatching of power netwoks department be connected, described station controlling system（8）It is used for realizing all pairs
To DC/DC changer control, stand in information gathering and with dispatching of power netwoks division communication.
3. a kind of electric automobile charging station according to claim 2 be actively engaged in electrical network regulation system it is characterised in that
The two-way DC/DC changer of described one-level（4）With described two grades two-way DC/DC changers（6）Using the PWM converter in charging station
It is two-way with DC/DC convertor controls, using the batteries of electric automobile in charging station as part energy storage device, build electric automobile
Charging station is actively engaged in the system of electrical network regulation；The two-way DC/DC changer of described one-level（4）For change electric pressure realize every
From described two grades of two-way DC/DC changers（6）Realize charged in parallel for unifying electric automobile voltage or to electrical network electric discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919454.3U CN205960661U (en) | 2016-08-22 | 2016-08-22 | System for electric automobile charging station active participation electric wire netting is adjusted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919454.3U CN205960661U (en) | 2016-08-22 | 2016-08-22 | System for electric automobile charging station active participation electric wire netting is adjusted |
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| CN205960661U true CN205960661U (en) | 2017-02-15 |
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| CN201620919454.3U Expired - Fee Related CN205960661U (en) | 2016-08-22 | 2016-08-22 | System for electric automobile charging station active participation electric wire netting is adjusted |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099962A (en) * | 2016-08-22 | 2016-11-09 | 国网江苏省电力公司盐城供电公司 | A kind of electric automobile charging station is actively engaged in the system and method for electrical network regulation |
| CN107284259A (en) * | 2017-06-16 | 2017-10-24 | 武汉科华动力科技有限公司 | DC charging system and its charging method for low-voltage battery system |
| US11444546B2 (en) | 2019-04-18 | 2022-09-13 | Delta Electronics (Shanghai) Co., Ltd. | Power supply device, charging system and charge scheduling method |
| US11742688B2 (en) | 2019-04-18 | 2023-08-29 | Delta Electronics (Shanghai) Co., Ltd. | Charging device and charging control method |
-
2016
- 2016-08-22 CN CN201620919454.3U patent/CN205960661U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106099962A (en) * | 2016-08-22 | 2016-11-09 | 国网江苏省电力公司盐城供电公司 | A kind of electric automobile charging station is actively engaged in the system and method for electrical network regulation |
| CN107284259A (en) * | 2017-06-16 | 2017-10-24 | 武汉科华动力科技有限公司 | DC charging system and its charging method for low-voltage battery system |
| US11444546B2 (en) | 2019-04-18 | 2022-09-13 | Delta Electronics (Shanghai) Co., Ltd. | Power supply device, charging system and charge scheduling method |
| US11742688B2 (en) | 2019-04-18 | 2023-08-29 | Delta Electronics (Shanghai) Co., Ltd. | Charging device and charging control method |
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Granted publication date: 20170215 Termination date: 20170822 |
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