CN105186504B - The distributed charging pile for electric vehicle of control carries out the system and method for mains frequency regulation - Google Patents
The distributed charging pile for electric vehicle of control carries out the system and method for mains frequency regulation Download PDFInfo
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- CN105186504B CN105186504B CN201510608480.4A CN201510608480A CN105186504B CN 105186504 B CN105186504 B CN 105186504B CN 201510608480 A CN201510608480 A CN 201510608480A CN 105186504 B CN105186504 B CN 105186504B
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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
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of system and method for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation, system architecture includes：Charge operation management system, frequency measurement terminal and distributed charging pile；Control strategy includes：Low frequency load shedding is controlled, load restoration control.The present invention it can realize using distributed electric bicycle, tricycle and the carriage charging pile largely installed, by controlling charging pile to charge and change network load, adjust the purpose of mains frequency.To the power failure of domestic consumer when can reduce frequency fluctuation, the service ability of increase electric car charging.
Description
Technical field
Carried out the present invention relates to mains frequency control technology field, more particularly to a kind of distributed charging pile for electric vehicle of control
The system and method for mains frequency regulation.
Background technology
FREQUENCY CONTROL is the important content of power system regulation and control.It is to ensure that power system security is stable to transport to maintain frequency stabilization
OK, the important goal of the quality of power supply is improved.Power system frequency regulation needs to be adjusted frequency by the way that regulating system is active.
Existing adjusting method is exerted oneself including regulator generator, Load Shedding According To Frequency, high-frequency cutting machine.
With the development of electric car industry, permeability of the electric car charging load in power distribution network is gradually stepped up.Present city
Substantial amounts of distributed electric bicycle, tricycle and carriage charging pile are installed in city.Electric car charge control response speed
It hurry up, to having a power failure, interruption is insensitive, it has the advantage of response frequency change progress spatial load forecasting.But single charging pile power is low,
Do not have Technical Economy for each charging pile configuration frequency measurement apparatus, and a large amount of electric automobiles are moved simultaneously when frequency changes
Make shortage concertedness, normal to system may run and have undesirable effect.Not yet there is a kind of rational method electronic by adjusting
Car charging carries out FREQUENCY CONTROL.
The content of the invention
The purpose of the present invention is exactly to be carried out to solve the above problems there is provided the distributed charging pile for electric vehicle of one kind control
The system and method for mains frequency regulation.The system and method using largely install distributed electric bicycle, tricycle and
Carriage charging pile, by controlling charging pile to charge, realizes regulation network load, adjusts the purpose of mains frequency.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation, including：
Charge operation management system：The frequency measurement information of receives frequency measuring terminals, receives distributed charging pile and uploads
Monitoring information, issue control information to distributed charging pile；
Frequency measurement terminal：For measuring system frequency information；To charging operation management system upload frequencies metrical information；
Distributed charging pile：Charging service is provided for electric car, monitoring information is uploaded to charging operation management system, receives
The control information that charging operation management system is issued.
The charged state of the monitoring information including charging pile, charge power, whether respond stopping charging signals information.
Charging operation management system and the frequency measurement terminal by wire communication, the charging operation management system with
Distributed charging pile passes through radio communication.
The system frequency information includes real-time frequency size and frequency change rate.
A kind of method for controlling distributed charging pile for electric vehicle to carry out mains frequency regulating system, comprises the following steps：
(1) charging operation management system obtains adjustable charging by receiving the monitoring information that distributed charging pile is uploaded
Stake quantity；
(2) the frequency measurement information real time computation system that charging operation management system is uploaded by receives frequency measuring terminals
Frequency information；
(3) system frequency f is judgedtWhether initiation culture f is less thansta；If it is, charging operation management system is by connecing
Receive the frequency measurement information real time computation system frequency information that frequency measurement terminal is uploaded；Otherwise, this mains frequency tune is terminated
Section；
(4) after the real time computation system frequency information of step (3), system frequency f is judgedtWhether higher than recovery frequency
frec；If it is, recovering by round because of the charging pile that UFLS is cut off, into step (5)；Otherwise, judge that system frequency is
It is no to be less than end frequency fend, into step (7)；
(5) by round recover because UFLS cut off charging pile after, judge because UFLS excision charging pile whether
Full recovery is powered；
(6) if because UFLS cut off charging pile whether full recovery is powered, mains frequency regulation terminates；It is no
Then, return to step (3) rejudges system frequency ftWhether initiation culture f is less thansta；
(7) system frequency ftIf less than end frequency fend, needs are calculated according to frequency measurement and frequency change rate and cut
The charging pile quantity removed；Otherwise, return to step (3) rejudges system frequency ftWhether initiation culture f is less thansta；
(8) obtain needing after the charging pile quantity that cuts off, according to calculating obtained excision power information under charging equipment
Load shedding instruction is sent out, step (3) is then back to and rejudges system frequency ftWhether initiation culture f is less thansta。
In the step (2), system frequency ftTake the average value of each measuring terminals frequency measurement：
Wherein, ftFor system frequency measured value, N is frequency measurement terminal quantity, fiSurveyed for the frequency of frequency measurement terminal i
Value.
In the step (4), charging operation management system is carried out extensive by round to the charging pile stopped by low frequency load shedding
Multiple method is：
Charging pile quantity N of the payload according to the original charged state of system is put into per roundtolCalculated：
Nhf=γ NTol, pre；
Wherein, NhfTo recover charging pile quantity, γ is tuning coefficient, NTol, preFor the charging pile number of original charged state
Amount.
In the step (4), charging operation management system selects what is recovered according to charging pile load restoration priority
Charging pile, charging operation management system issues recovery charging instruction to the charging pile to be recovered.
In the step (7), charging operation management system is calculated according to frequency measurement and frequency change rate needs excision
The specific method of charging pile quantity be：
Wherein, NshedCharging pile quantity, α are cut for system, β is tuning coefficient, ftFor system frequency measured value, dft/ dt is
System frequency rate of change measured value, fNFor frequency rated value, NtolThe charging pile quantity of charged state is in for system.
System frequency rate of change measured value takes the average value of each measuring terminals frequency change rate measured value：
Wherein, dft/ dt is system frequency rate of change measured value, and N is frequency measurement terminal quantity, dfi/ dt is frequency measurement
The frequency change rate measured value of terminal i.
In the step (7), the method for calculating the charging pile quantity for needing to cut off is：
The operation management system that charges cuts off the priority selection charging pile to be cut off according to charging pile load；Charging operation
Management system issues excision charging instruction to the charging pile to be cut off.
Beneficial effects of the present invention：
The present invention can pass through control using distributed electric bicycle, tricycle and the carriage charging pile largely installed
Charging pile charging processed, realizes regulation network load, adjusts the purpose of mains frequency.
Controlled by low frequency load shedding and power supply when load restoration control strategy reduces frequency fluctuation to domestic consumer
Interrupt, improve power supply reliability.The service ability of electric car charging is added, extra returns can be carried out for electric car charge-carrying belt.
Brief description of the drawings
Fig. 1 is system structure diagram of the invention.
Fig. 2 is information transmission schematic diagram of the invention.
Fig. 3 sets schematic diagram for the set of frequency and active region of the present invention.
Fig. 4 is system operation schematic diagram of the invention.
Embodiment
With reference to embodiment, the invention will be further described.
As depicted in figs. 1 and 2, the system architecture for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation includes：
Charge operation management system, frequency measurement terminal, distributed charging pile.
Charging operation management system is System Control Center.The charging operation management system function includes：Receives frequency
The frequency measurement information of measuring terminals, receives the monitoring information that distributed charging pile is uploaded, control is issued to distributed charging pile
Information.
Frequency measurement terminal is the frequency measuring equipment of system, and frequency measurement termination function is to charging operation management system
Upload frequencies metrical information.Frequency measurement information includes real-time frequency size f and frequency change rate df/dt.
Distributed charging pile provides the electrically-charging equipment of charging service for electric car.Distributed charging pile function includes：Xiang Chong
Electric operation management system uploads monitoring information, receives the control information that charging operation management system is issued, manages filling for itself
Electric equipment.The charged state of the monitoring information including charging pile, charge power, whether respond stopping charging signals information.
Charging operation management system passes through wire communication with frequency measurement terminal.Charging operation management system fills with distribution
Electric stake passes through radio communication.
Specifically control strategy is the present invention：
The method control strategy that the distributed charging pile for electric vehicle of control carries out mains frequency regulation includes low frequency load shedding control
System and load restoration control.
System frequency measured value ftTake the average value of each measuring terminals frequency measurement：
In formula, ftFor system frequency measured value, N is frequency measurement terminal quantity, fiSurveyed for the frequency of frequency measurement terminal i
Value.
System frequency rate of change takes the average value of each measuring terminals frequency change rate measured value：
In formula, dft/ dt is system frequency rate of change measured value, and N is frequency measurement terminal quantity, dfi/ dt is frequency measurement
The frequency change rate measured value of terminal i.
Low frequency load shedding is controlled in system frequency measured value ftLess than initiation culture fstaShi Qidong.The low frequency load shedding
Control to calculate in real time by the frequency measurement information of frequency measurement terminal by charging operation management system and cut charging pile quantity.
System cuts charging pile quantity：
In formula, NshedCharging pile quantity, α are cut for system, β is tuning coefficient, ftFor system frequency measured value value, dft/dt
For system frequency rate of change measured value, fNFor frequency rated value, NtolThe charging pile quantity of charged state is in for system.
System cutting load actuation time is at intervals of Δ t1。
Charging operation management system cuts charging pile quantity N according to what is calculated in real timeshedCut off the charging pile of charged state.When
Frequency retrieval is to terminating frequency fendWhen, stop cutting load action.
Load restoration control is as system frequency ftRise above recovery frequency frecWhen, by because of the charging of low cut
Stake is by round input.Recover frequency f when frequency measurement is less thanrecWhen stop charging pile input, until frequency be more than recover frequency
frec.The charging pile quantity put into every time is Nhf.Input interval time is Δ t2。
Charging pile quantity N of the payload according to the original charged state of system is put into per roundtolCalculated：
Nhf=γ NTol, pre
In formula, NhfTo recover charging pile quantity, γ is tuning coefficient, NTol, preFor the charging pile number of original charged state
Amount.
Low frequency load shedding selection stop charging charging piling method be：The operation system that charges cuts off excellent according to charging pile load
First level selects the charging pile to be cut off.Charging operation system issues excision charging instruction to the charging pile to be cut off.
Load restoration control method is：Charging operation system selects what is cut off according to charging pile load restoration priority
Charging pile.Charging operation system issues excision charging instruction to the charging pile to be recovered.
The a desirable system number such as table 1 of the present invention.
One group of desirable parameter of the present invention of table 1
| Parameter | Value | Parameter | Value |
| Initiation culture fsta | 49.25Hz | Tuning coefficient α | 0.4 |
| Terminate frequency fend | 49.8Hz | Tuning coefficient β | 0.25 |
| Recover frequency frec | 49.9Hz | Interval time Δ t1 | 10s |
| Tuning coefficient γ | 0.02 | Interval time Δ t2 | 10s |
As shown in Figure 3 and Figure 4, specific implementation step of the invention is：
(1) charging operation management system obtains adjustable charging by receiving the monitoring information that distributed charging pile is uploaded
Stake quantity；
(2) the frequency measurement information real time computation system that charging operation management system is uploaded by receives frequency measuring terminals
Frequency information；
(3) system frequency f is judgedtWhether initiation culture f is less thansta；
(4) if system frequency ftLess than initiation culture fsta, charging operation management system pass through receives frequency measuring terminals
The frequency measurement information real time computation system frequency information of upload, otherwise terminates, this flow since newly；
(5) after the real time computation system frequency information of step (4), system frequency f is judgedtWhether higher than recovery frequency
frec；
(6) if system frequency ftHigher than recovery frequency frecThen recover, because of the charging pile that UFLS is cut off, to enter by round
Enter step (7), otherwise judge system frequency whether less than end frequency fend, into step 9；
(7) by round recover because UFLS cut off charging pile after, judge because UFLS excision charging pile whether
Full recovery is powered；
(8) terminate if the charging pile full recovery cut off by UFLS is powered, otherwise this flow since newly is entered
Enter the frequency measurement information real time computation system frequency that the charging operation management system of step 4 is uploaded by receives frequency measuring terminals
Rate information link；
(9) system frequency ftIf less than end frequency fend, excision is calculated according to frequency measurement and frequency change rate and filled
Electric stake quantity, the frequency measurement otherwise uploaded into the charging operation management system of step (4) by receives frequency measuring terminals
Information real time computation system frequency information；
(10) calculated according to frequency measurement and frequency change rate after excision charging pile quantity, the excision obtained according to calculating
Power information issues load shedding instruction to charging equipment, and reception frequency is passed through subsequently into the charging operation management system of step (4)
The frequency measurement information real time computation system frequency information that rate measuring terminals are uploaded.
The method that control distributed charging pile proposed by the present invention carries out mains frequency regulation, can charge ginseng for electric car
With a kind of technically reliable of power system frequency control offer, the implementation of economical rationality.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still in protection scope of the present invention that creative work can make.
Claims (6)
1. a kind of method for the system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation, it is characterized in that,
The system that the distributed charging pile for electric vehicle of described control carries out mains frequency regulation includes：Charging operation management system,
Frequency measurement terminal and distributed charging pile；
Described method comprises the following steps：
(1) charging operation management system obtains adjustable charging pile number by receiving the monitoring information that distributed charging pile is uploaded
Amount；
(2) the frequency measurement information real time computation system frequency that charging operation management system is uploaded by receives frequency measuring terminals
Information；
(3) system frequency f is judgedtWhether initiation culture f is less thansta；If it is, charging operation management system passes through receives frequency
The frequency measurement information real time computation system frequency information that measuring terminals are uploaded；Otherwise, the regulation of this mains frequency is terminated；
(4) after the real time computation system frequency information of step (3), system frequency f is judgedtWhether higher than recovery frequency frec；Such as
Fruit is then to recover by round because of the charging pile that UFLS is cut off, into step (5)；Otherwise, judge whether system frequency is less than
Terminate frequency fend, into step (7)；
(5) recover by round because after the charging pile that UFLS is cut off, judging because whether the charging pile of UFLS excision is whole
Restore electricity；
(6) if because UFLS cut off charging pile whether full recovery is powered, mains frequency regulation terminates；Otherwise, return
Return step (3) and rejudge system frequency ftWhether initiation culture f is less thansta；
(7) system frequency ftIf less than end frequency fend, being calculated according to frequency measurement and frequency change rate needs what is cut off
Charging pile quantity；Otherwise, return to step (3) rejudges system frequency ftWhether initiation culture f is less thansta；
(8) obtain after the charging pile quantity that needs are cut off, the excision power information obtained according to calculating is issued to charging equipment to be subtracted
Load instruction, is then back to step (3) and rejudges system frequency ftWhether initiation culture f is less thansta；
In the step (7), charging operation management system is calculated according to frequency measurement and frequency change rate needs what is cut off to fill
The specific method of electric stake quantity is：
Wherein, NshedCharging pile quantity, α are cut for system, β is tuning coefficient, ftFor system frequency measured value, dft/ dt is system
Frequency change rate measured value, fNFor frequency rated value, NtolThe charging pile quantity of charged state is in for system.
2. a kind of side of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation as claimed in claim 1
Method, it is characterized in that, in the step (2), system frequency ftTake the average value of each measuring terminals frequency measurement.
3. a kind of side of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation as claimed in claim 1
Method, it is characterized in that, in the step (4), charging operation management system is by round to entering because of the charging pile that low frequency load shedding stops
Row recover method be：
Charging pile quantity N of the payload according to the original charged state of system is put into per roundtolCalculated；Recover charging
Stake quantity is equal to the charging pile quantity of original charged state and the product of tuning coefficient.
4. a kind of side of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation as claimed in claim 1
Method, it is characterized in that, in the step (4), charging operation management system selects extensive according to charging pile load restoration priority
Multiple charging pile, charging operation management system issues recovery charging instruction to the charging pile to be recovered.
5. a kind of side of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation as claimed in claim 1
Method, it is characterized in that, system frequency rate of change measured value takes the average value of each measuring terminals frequency change rate measured value：
Wherein, dft/ dt is system frequency rate of change measured value, and N is frequency measurement terminal quantity, dfi/ dt is frequency measurement terminal
I frequency change rate measured value.
6. a kind of side of system for controlling distributed charging pile for electric vehicle to carry out mains frequency regulation as claimed in claim 1
Method, it is characterized in that, in the step (7), the method for calculating the charging pile quantity for needing to cut off is：
The operation management system that charges cuts off the priority selection charging pile to be cut off according to charging pile load；Charging operation management
System issues excision charging instruction to the charging pile to be cut off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510608480.4A CN105186504B (en) | 2015-09-22 | 2015-09-22 | The distributed charging pile for electric vehicle of control carries out the system and method for mains frequency regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510608480.4A CN105186504B (en) | 2015-09-22 | 2015-09-22 | The distributed charging pile for electric vehicle of control carries out the system and method for mains frequency regulation |
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| CN105186504A CN105186504A (en) | 2015-12-23 |
| CN105186504B true CN105186504B (en) | 2017-08-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11376984B2 (en) * | 2017-05-16 | 2022-07-05 | Hubbell Incorporated | Electric vehicle charger with load shedding |
| CN107579530B (en) * | 2017-09-28 | 2020-07-10 | 广西大学 | Low-frequency load shedding method and low-frequency load shedding control system for power grid |
| CN108407636B (en) * | 2018-02-08 | 2021-11-12 | 国电南瑞科技股份有限公司 | Local real-time optimization charging control method for electric automobile |
| CN108973752A (en) * | 2018-08-15 | 2018-12-11 | 国网浙江省电力有限公司杭州供电公司 | A kind of orderly charging management system of charging station and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8478452B2 (en) * | 2010-04-06 | 2013-07-02 | Battelle Memorial Institute | Grid regulation services for energy storage devices based on grid frequency |
| CN102541010A (en) * | 2012-01-06 | 2012-07-04 | 中国电力科学研究院 | Monitoring system for electric automobile and control method thereof |
| CN104253444B (en) * | 2014-10-11 | 2017-01-25 | 国家电网公司 | Control system for grid frequency of large-scale charging station |
| CN104836292B (en) * | 2015-05-08 | 2017-01-25 | 山东大学 | Electric automotive charging pile control system with considered electric network frequency safety, and method thereof |
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