CN105095982B - A kind of electric vehicle participation power grid frequency modulation dispatching method based on running model - Google Patents
A kind of electric vehicle participation power grid frequency modulation dispatching method based on running model Download PDFInfo
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- CN105095982B CN105095982B CN201510136296.4A CN201510136296A CN105095982B CN 105095982 B CN105095982 B CN 105095982B CN 201510136296 A CN201510136296 A CN 201510136296A CN 105095982 B CN105095982 B CN 105095982B
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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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Abstract
The invention discloses a kind of, and the electric vehicle based on running model participates in power grid frequency modulation dispatching method, the total revenue that FM signal precision and electric vehicle are tracked by coordination calculates electric vehicle participation frequency modulation total capacity, makes that electric vehicle total revenue is maximum while electric power grid frequency stabilization.Then, according to electric vehicle active volume range, by the total capacity fair allocat being calculated to the electric vehicle for participating in frequency modulation, the demand electricity for meeting electric vehicle extraordinary in this way, the trip requirements at any time for facilitating automobile user can encourage more users to participate in frequency modulation service.
Description
Technical field
The invention belongs to dispatching of power netwoks technical fields, more specifically, are related to a kind of electronic vapour based on running model
Vehicle participates in power grid frequency modulation dispatching method.
Background technology
Advantage of the electric vehicle in terms of environmental protection is that orthodox car is incomparable, is received mondial extensive
Concern.With battery apparatus, the continuous development of actuation techniques, electric vehicle is promoted to develop rapidly.A large amount of electric vehicle access electricity
Net brings huge challenge to the load-taking capacity of power grid, affects the safe operation of power grid.With electric vehicle charge and discharge
The development of electric equipment technology is gradually ripe, and electric vehicle, which is included in dispatching of power netwoks, becomes new research tendency.
Batteries of electric automobile can quick response mains frequency demand in a short time, pass through the tune to a large amount of electric vehicles
Degree, can help power grid to improve its operation characteristic.Both at home and abroad for electric vehicle participate in frequency modulation service Research of Scheduling Method compared with
It is more, it is contemplated that the dispatching method of user vehicle running model, that is, electric vehicle participates in paying the utmost attention in power grid frequency modulation scheduling process
The optimization solution research of the traveling demand of automobile user is less.In power grid to the electric vehicle tune of participation frequency modulation service
During degree, the characteristics of ignoring electric vehicle mobility mostly, and only access the entire tune of power grid for a long time in electric vehicle
Ensure the electrical demand of electric vehicle at the end of spending cycle period.To cause in this way electric vehicle before dispatching cycle terminates from
When opening, battery capacity cannot be guaranteed the demand of reach under electric vehicle, this will influence the daily life of automobile user.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of, and the electric vehicle based on running model participates in
Power grid frequency modulation dispatching method increases electric vehicle cluster as much as possible on the basis of meeting electric vehicle trip requirements electricity
Income, reduction significantly use certain batteries of electric automobile.
For achieving the above object, a kind of electric vehicle based on running model of the present invention participates in power grid frequency modulation dispatching party
Method, which is characterized in that include the following steps：
(1), the expectation SOC of each electric vehicle is calculatedexp
(1.1), the electric vehicle in control centre's monitoring administration is accessed into charging pile；
(1.2), control centre calculates separately out the expectation of every electric vehicle according to the running data of each electric vehicle
SOCexp；
(2), control centre determines the current state of every electric vehicle
When scheduling starts, control centre is by the expectation SOC of the current SOC of every electric vehicle and this electric vehicleexpInto
Row compares, if SOC≤SOCexp, which is in charged state, then to electric vehicle within the scope of battery available capacity
Rapid rate charging is carried out, and enters the scheduling of next round；If SOC ＞ SOCexp, which, which is in, participates in frequency modulation state,
And enter step (3)；
(3), control centre in the electric vehicle for participating in frequency modulation state to being scheduled
(3.1), power grid sends FM signal every time T to control centre, and control centre is according to FM signal and electronic
The current SOC of automobile, tissue batteries of electric automobile capacity track FM signal；
Control centre by coordinating electric vehicle total revenue and tracking the precision of FM signal, is calculated again by formula (1)~(6)
Go out to participate in the total capacity R of the electric vehicle of frequency modulationopt(t)；
|Ropt(t)-XS(t)|≤0.03*|XS(t)| (3)
Wherein U (t) is the electric vehicle total revenue for participating in frequency modulation；Ropt(t) be t moment participate in frequency modulation electric vehicle it is total
Capacity；It is the capacity that n-th electric vehicle of t moment participates in frequency modulation；N indicates that control centre's scheduling participates in the electronic of frequency modulation
Automobile quantity；Preg(t) and Pcha(t) it is frequency regulation capacity price and node electricity price；α, β, γ are weight coefficient；XS (t) indicates to adjust
Frequency signal, X indicates the positive and negative value of FM signal, and as X=1, electric vehicle participates in the service of lowering, as X=-1, electronic vapour
Vehicle participates in up-regulation service；SOCn(t) the battery SOC state of n-th electric vehicle t moment is indicated；Expression n-th is electronic
The desired battery SOC state of automobile；Indicate the maximum value of n-th batteries of electric automobile effective range；It indicates
N-th electric vehicle t moment may participate in the performance number of frequency modulation service charge and discharge；WithExpression n-th is electronic respectively
The minimum value and maximum value of automobile charge-discharge electric power；
(3.2), the total capacity that step (3.1) is calculated for control centre according to batteries of electric automobile active volume model
It encloses, is calculated by formula (7)~(12) and distribute to every electric vehicle, after being assigned, frequency modulation is participated in every electric vehicle
The percentage that capacity accounts for active volume is minimum；
Wherein, J (t) indicates that electric vehicle participates in frequency regulation capacity and accounts for the sum of active volume percentage；SOCn(t) and SOCn(t-
1) the battery SOC state of n-th electric vehicle t moment and t-1 moment is indicated；Indicate that n-th batteries of electric automobile has
Imitate the maximum value of range；
(3.3), control centre is by total capacity Ropt(t) after being assigned, terminate this scheduling, and return to step (2), wait for
After the FM signal for receiving the T+1 moment, next round scheduling is carried out.
What the goal of the invention of the present invention was realized in：
The present invention is based on the electric vehicles of running model to participate in power grid frequency modulation dispatching method, and FM signal is tracked by coordination
Precision and the total revenue of electric vehicle calculate electric vehicle and participate in frequency modulation total capacity, make while electric power grid frequency stabilization electronic
Automobile total revenue is maximum.Then, according to electric vehicle active volume range, by the total capacity fair allocat being calculated to participation
The electric vehicle of frequency modulation, the demand electricity for meeting electric vehicle extraordinary in this way, facilitates automobile user at any time
Trip requirements can encourage more users to participate in frequency modulation service.
Meanwhile the present invention is based on the electric vehicles of running model to participate in power grid frequency modulation dispatching method also with below beneficial to effect
Fruit：
(1), the present invention is by coordinating electric vehicle total revenue and FM signal tracking accuracy, in the base of electric power grid frequency stabilization
On plinth, the maximization of electric vehicle total revenue is realized；
(2), frequency regulation capacity is distributed to electric vehicle according to the different of electric vehicle active volume, not only meets electronic vapour
Automobile-used family travels demand, also reduces the significantly use to a certain batteries of electric automobile, while protecting battery.
Description of the drawings
Fig. 1 is that the present invention is based on the flow charts that the electric vehicle of running model participates in power grid frequency modulation dispatching method；
Fig. 2 is electric vehicle cluster track FM signal figure in the present invention；
Fig. 3 is electric vehicle cluster track FM signal figure in comparison case；
Fig. 4 is in the present invention, and electric vehicle electricity changes over time figure；
Fig. 5 is in comparison case, and electric vehicle electricity changes over time figure.
Specific implementation mode
The specific implementation mode of the present invention is described below in conjunction with the accompanying drawings, preferably so as to those skilled in the art
Understand the present invention.Requiring particular attention is that in the following description, when known function and the detailed description of design perhaps
When can desalinate the main contents of the present invention, these descriptions will be ignored herein.
Embodiment
Fig. 1 is that the present invention is based on the flow charts that the electric vehicle of running model participates in power grid frequency modulation dispatching method.
In the present embodiment, as shown in Figure 1, the present invention is based on the electric vehicles of running model to participate in power grid frequency modulation dispatching party
Method includes the following steps：
S1, the running data for reading electric vehicle
In the present invention, the electric vehicle in control centre's monitoring administration is all made of commuting electric vehicle, works as electric vehicle
When stopping being linked into charging pile into charging station, control centre may be read into the running data of electric vehicle and current SOC；
Every kilometer of energy input E when S2, calculating electric automobile during travelingm
Em=E η
Wherein, E indicates that electric vehicle standard power consumption values, η indicate batteries of electric automobile discharging efficiency；
Day demand electricity D when S3, calculating electric automobile during travelingE
DE=Md*Em
Wherein, MdFor the day operating range of electric vehicle, the running data to electric vehicle in one month can be passed through
It averages to obtain；
S4, the expectation SOC for calculating electric vehicleexp
SOCexp=SOCη* 20%+DE/C+Em*1/C
Wherein, SOCηFor the available capacity of batteries of electric automobile, C indicates battery total capacity, can be said in the product of battery
It is read in bright book；In the present embodiment, commute the available capacity ranging from 20%~95% of batteries of electric automobile；
S5, control centre determine the current state of every electric vehicle
When scheduling starts, control centre is by the expectation SOC of the current SOC of every electric vehicle and this electric vehicleexpInto
Row compares, if SOC≤SOCexp, which is in charged state, then to electric vehicle within the scope of battery available capacity
Rapid rate charging is carried out, and enters the scheduling of next round；If SOC ＞ SOCexp, which, which is in, participates in frequency modulation state,
And enter step S6；The current state of all electric vehicles is determined with this；
S6, control centre in the electric vehicle for participating in frequency modulation state to being scheduled
S6.1), power grid sends FM signal every time T to control centre, and control centre is further according to FM signal and electricity
The current SOC of electrical automobile, tissue batteries of electric automobile capacity track FM signal；
Control centre by coordinating electric vehicle total revenue and tracking the precision of FM signal, is calculated again by formula (1)~(6)
Go out to participate in the total capacity R of the electric vehicle of frequency modulationopt(t)；
|Ropt(t)-XS(t)|≤0.03*|XS(t)| (3)
Wherein U (t) is the electric vehicle total revenue for participating in frequency modulation；Ropt(t) be t moment participate in frequency modulation electric vehicle it is total
Capacity；It is the capacity that n-th electric vehicle of t moment participates in frequency modulation；N indicates that control centre's scheduling participates in the electronic of frequency modulation
Automobile quantity；Preg(t) and Pcha(t) it is frequency regulation capacity price and node electricity price；α, β, γ are weight coefficient；XS (t) indicates to adjust
Frequency signal, X indicates the positive and negative value of FM signal, and as X=1, electric vehicle participates in the service of lowering, as X=-1, electronic vapour
Vehicle participates in up-regulation service；SOCn(t) the battery SOC state of n-th electric vehicle t moment is indicated；Expression n-th is electronic
The desired battery SOC state of automobile；Indicate the maximum value of n-th batteries of electric automobile effective range；It indicates
N-th electric vehicle t moment may participate in the performance number of frequency modulation service charge and discharge；WithN-th electronic vapour is indicated respectively
The minimum value and maximum value of vehicle charge-discharge electric power；
S6.2), control centre is by step S6.3) total capacity that is calculated according to batteries of electric automobile active volume model
It encloses, is calculated by formula (7)~(12) and distribute to every electric vehicle, after being assigned, frequency modulation is participated in every electric vehicle
The percentage that capacity accounts for active volume is minimum；
Wherein, J (t) indicates that electric vehicle participates in frequency regulation capacity and accounts for the sum of active volume percentage；SOCn(t) and SOCn(t-
1) the battery SOC state of n-th electric vehicle t moment and t-1 moment is indicated；Indicate that n-th batteries of electric automobile has
Imitate the maximum value of range；
In the present embodiment, if frequency modulation total capacity is R, control centre dispatches 3 electric vehicles and participates in frequency modulation, and 3 electronic
The ratio between active volume of automobile is 3:2:1, then more frequency regulation capacity to be distributed to active volume larger for control centre
Electric vehicle.If first electric vehicle absorbs whole frequency regulation capacities in the state of electric quantity change rate minimum, then
This portion capacity is just fully allocated to this vehicle；If this vehicle in the state of electric quantity change rate minimum, cannot absorb entirely
The frequency regulation capacity in portion, then residual capacity is distributed to second car, the same first car of capacity assigning process, entire assigning process
And so on.
S6.3), control centre is by total capacity Ropt(t) after being assigned, terminate this scheduling, and return to step S5, it is waiting
After the FM signal for receiving the T+1 moment, next round scheduling is carried out.
Example
10 commuting electric vehicle, that is, 1~EV of EV 10 of selection, battery capacity, initial SOC, expectation SOC and charging,
It is as shown in table 1 to participate in chirp rate variation range.
Table 1
Fig. 2 is electric vehicle cluster track FM signal figure in the present invention.
Fig. 3 is electric vehicle cluster track FM signal figure in comparison case.
In the present embodiment, specific as follows to embody the superiority-inferiority of the present invention by calculating electric vehicle cluster income：
Electric vehicle cluster income In is：
Wherein, Rn(t) and Cn(t) indicate that n-th electric vehicle of t moment participates in power grid frequency modulation capacity and charge capacity respectively；
N indicates that control centre's scheduling participates in the electric vehicle quantity of frequency modulation；H indicates the All Time model of control centre's scheduling electric vehicle
It encloses；Preg(t) and Pcha(t) it is frequency regulation capacity price and node electricity price；α, β, γ are weight coefficient；XS (t) indicates FM signal；
X indicates the positive and negative value of FM signal, and as X=1, electric vehicle participates in the service of lowering, and as X=-1, electric vehicle participates in
Up-regulation service.Last in formula is the income punishment that power grid fails control centre tenacious tracking FM signal, is utilized
The difference that electric vehicle participates in the capacity that frequency modulation load capacity is unable to perfect tracking FM signal carries out punishment calculating.
In the present invention, as shown in Fig. 2, electric vehicle participates in frequency modulation load curve and FM signal curve almost weighs
It closes, then electric vehicle participates in the difference very little of frequency modulation load capacity value and FM signal value, is influenced on electric vehicle total revenue smaller.
In the present embodiment, within the dispatching cycle of H=12 hour of selection, a schduling cycle was carried out every 5 minutes, according to formula (13)
It is $ 2.2491 that electric vehicle total revenue, which is calculated,.
In comparing case, meet between capacity curve and FM signal curve as shown in figure 3, electric vehicle participates in frequency modulation
Deviation is larger, and the difference that FM signal value and electric vehicle participate between frequency regulation capacity value when scheduling every time is very big, will cause to receive
Punish that entry value is larger in beneficial calculating process, electric vehicle total revenue is relatively low, total revenue 2.107.
Fig. 4 is in the present invention, and electric vehicle electricity changes over time figure.
Fig. 5 is in comparison case, and electric vehicle electricity changes over time figure.
In comparing case, as shown in figure 5, between 4-5 hours and the 10.5th hour or so, three electric vehicles
SOC all have decreased to desired SOC hereinafter, if at this moment user has the demand of trip suddenly, just will appear battery capacity cannot
Ensure the basic range demands of user.
In case of the present invention, as shown in figure 4, due to the difference of electric vehicle initial quantity of electricity level, first one or two hour
It is likely to be at charged state, electricity not up to it is expected SOC.After electricity is more than desired SOC, the state of charge of electric vehicle is just
Desired SOC or more is remained at, in this case, no matter when user leaves, electric vehicle electricity can guarantee user always
Basic trip requirements.
Secondly, it as shown in figure 5, electric vehicle will appear the electricity from about 90%, puts to 30% electricity below so that
The peak-valley difference of electric vehicle SOC has reached 50% or more.And in the present invention, although as shown in figure 4, within some periods, it is electronic
Automobile power changes greatly, but its SOC maintains desired SOC or more always, is still protected to the peak-valley difference of electric vehicle SOC
It holds below 50%.
By comparing two case study on implementation it is found that when considering the running model of automobile user, control centre pair
The scheduling of electric vehicle capacity maintains Expected energy or more, this ensure that the demand of automobile user, user is regardless of what
When leave the traveling demand that can ensure that its is basic, and therefrom obtain more income.Case of the present invention also makes electric vehicle
In use, the peak-valley difference of battery SOC reduces battery, reduce battery depth fill it is deep put, protect battery life.
Although the illustrative specific implementation mode of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the present invention is not limited to the range of specific implementation mode, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the spirit and scope of the present invention in, these
Variation is it will be apparent that all utilize the innovation and creation of present inventive concept in the row of protection.
Claims (3)
1. a kind of electric vehicle based on running model participates in power grid frequency modulation dispatching method, which is characterized in that include the following steps：
(1), the expectation SOC of each electric vehicle is calculatedexp
(1.1), the electric vehicle in control centre's monitoring administration is accessed into charging pile；
(1.2), control centre calculates separately out the expectation SOC of every electric vehicle according to the running data of each electric vehicleexp；
(2), control centre determines the current state of every electric vehicle
When scheduling starts, control centre is by the expectation SOC of the current SOC of every electric vehicle and this electric vehicleexpCompared
Compared with if SOC≤SOCexp, which is in charged state, then to electric vehicle progress within the scope of battery available capacity
Rapid rate charges, and enters the scheduling of next round；If SOC ＞ SOCexp, which, which is in, participates in frequency modulation state, goes forward side by side
Enter step (3)；
(3), control centre in the electric vehicle for participating in frequency modulation state to being scheduled
(3.1), power grid sends FM signal every time T to control centre, and control centre is according to FM signal and electric vehicle
Current SOC organize batteries of electric automobile capacity track FM signal；
By coordinating electric vehicle total revenue and tracking the precision of FM signal, ginseng is calculated by formula (1)~(6) again for control centre
With the total capacity R of the electric vehicle of frequency modulationopt(t)；
|Ropt(t)-XS(t)|≤0.03*|XS(t)| (3)
Wherein U (t) is the electric vehicle total revenue for participating in frequency modulation；Ropt(t) be t moment participate in frequency modulation electric vehicle total capacity；It is the capacity that n-th electric vehicle of t moment participates in frequency modulation；N indicates that control centre's scheduling participates in the electric vehicle number of frequency modulation
Amount；Preg(t) and Pcha(t) it is frequency regulation capacity price and node electricity price；α, β, γ are weight coefficient；XS (t) indicates FM signal,
X indicates the positive and negative value of FM signal, and as X=1, electric vehicle participates in the service of lowering, and as X=-1, electric vehicle participates in
Up-regulation service；SOCn(t) the battery SOC state of n-th electric vehicle t moment is indicated；Indicate n-th electric vehicle phase
The battery SOC state of prestige；Indicate the maximum value of n-th batteries of electric automobile effective range；Indicate n-th electricity
Electrical automobile t moment may participate in the performance number of frequency modulation service charge and discharge；WithN-th electric vehicle charge and discharge is indicated respectively
The minimum value and maximum value of electrical power；
(3.2), the total capacity that step (3.1) is calculated for control centre according to batteries of electric automobile active volume range,
It is calculated by formula (7)~(12) and distributes to every electric vehicle, after being assigned, the capacity of frequency modulation is participated in every electric vehicle
The percentage for accounting for active volume is minimum；
Wherein, J (t) indicates that electric vehicle participates in frequency regulation capacity and accounts for the sum of active volume percentage；SOCn(t) and SOCn(t-1) table
Show n-th electric vehicle t moment and the battery SOC state at t-1 moment；Indicate n-th effective model of batteries of electric automobile
The maximum value enclosed；(3.3), control centre is by total capacity Ropt(t) after being assigned, terminate this scheduling, and return to step (2),
After the FM signal waiting for receiving the T+1 moment, next round scheduling is carried out.
2. the electric vehicle according to claim 1 based on running model participates in power grid frequency modulation dispatching method, feature exists
In in the step (1.2), calculating the expectation SOC of electric vehicleexpMethod be：
1) every kilometer of energy input E when, calculating electric automobile during travelingm
Em=E η
Wherein, E indicates that electric vehicle standard power consumption values, η indicate batteries of electric automobile discharging efficiency；
2) day demand electricity D when electric automobile during traveling, is calculatedE
DE=Md*Em
Wherein, MdFor the day operating range of electric vehicle；
3) the expectation SOC of electric vehicle, is calculatedexp
SOCexp=SOCη* 20%+DE/C+Em*1/C
Wherein, SOCηFor the available capacity of batteries of electric automobile, C indicates battery total capacity.
3. the electric vehicle according to claim 1 based on running model participates in power grid frequency modulation dispatching method, feature exists
In the available capacity ranging from 20%~95% of the batteries of electric automobile.
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| CN107104454A (en) * | 2017-06-06 | 2017-08-29 | 重庆大学 | Meter and the optimal load flow node electricity price computational methods in electric automobile power adjustable control domain |
| CN110481384B (en) * | 2019-07-05 | 2023-01-17 | 广东工业大学 | Electric vehicle peak regulation capacity calculation method based on multi-factor influence condition |
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| CN101950992A (en) * | 2010-08-13 | 2011-01-19 | 国网电力科学研究院 | System frequency-modulation service implementation method based on electric automobile charging automatic switching control |
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