CN109888804A - A kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio - Google Patents
A kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio Download PDFInfo
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Abstract
The invention discloses a kind of battery energy storage frequency modulation pricing methods based on new energy infiltration ratio, belong to and are related to the technical field of power generation of power grid frequency modulation and electric system.Aimed at precision of the present invention first against power grid new energy infiltration ratio-dependent battery energy storage tracking FM signal, then setting battery energy storage frequency modulation price initial value, and according to the battery energy storage essential information of acquisition, object solving battery energy storage is turned to the tracking decision of FM signal with battery energy storage Income Maximum, and then the precision of battery energy storage tracking FM signal is calculated according to tracking decision, finally by comparison tracking accuracy and aimed at precision, battery energy storage frequency modulation price is obtained.This method is in such a way that regulating cell energy storage frequency modulation is fixed a price, in the enthusiasm for improving battery energy storage participation frequency modulation when new energy permeates at high proportion in the power system.
Description
Technical field
The invention discloses a kind of battery energy storage frequency modulation pricing methods based on new energy infiltration ratio, are related to new energy infiltration
The generation technology of saturating power grid frequency modulation, belongs to the technical field of power generation, power transformation or distribution.
Background technique
The core content of energy transition and the weight of reply climate change are promoted currently, developing new energy and having become many countries
Approach and China is wanted to promote production of energy and consumption revolution, the important measures for pushing energy transition.In recent years, the new energy in China
Source power generating industry is all-round developing, and scale goes from strength to strength, and enters the stage of a wide range of increment substitution and regional storage substitution, wind
Power and photovoltaic plant development are advanced by leaps and bounds.However, generation of electricity by new energy has the characteristics that fluctuation, randomness, as new energy is sent out
It is electrically accessed the continuous expansion of scale and capacity, the phenomenon that power grid frequency modulation scarce capacity, frequency unstability happens occasionally.
In recent years, power grid frequency modulation is participated in by the extensive concern of industry using extensive accumulation power supply.Accumulation power supply tool
There are fast response time, control advantage with high accuracy, can largely improve the frequency modulation effect of electric system.Currently, rule
Modelling battery energy storage participates in power grid frequency modulation and has had been provided with Research foundation and Applied D emonstration.Therefore, join to improve battery energy storage
With the enthusiasm of power grid frequency modulation, grid dispatching center needs to provide reasonable frequency modulation price guidance battery energy storage and participates in frequency modulation, with
This improves the fm capacity that new energy permeates power grid at high proportion.Battery energy storage how is guided to participate in frequency modulation however, being directed at this stage
Still lack effective price means.
Currently, as follows for the patent of energy storage frequency modulation income measurement mode in electric system:
A kind of patent " energy storage income calculation method towards power grid AGC frequency modulation " (number of patent application
201810565719.8) it proposes: firstly, choosing the battery energy storage type for meeting frequency modulation requirement according to power grid frequency modulation characteristic；Then,
From energy storage frequency modulation economy point, the economic model that battery energy storage system participates in power grid auxiliary frequency modulation is established, is comprehensively considered
The overall interests of electric system and energy-storage system, research calculate various common frequency modulation stored energy applications in the warp of auxiliary power grid frequency modulation
Ji benefit, and the relationship of the power/capacity configuration and economy to energy storage is analyzed, and battery energy storage system auxiliary power grid is promoted
The economic benefit of frequency modulation.However, existing energy storage frequency modulation pricing scheme, which only accounts for energy storage, participates in the income of frequency modulation, and have ignored
Energy storage participates in the income of other grid services.
Summary of the invention
The purpose of the invention patent is the deficiency for above-mentioned background technique, is provided a kind of based on new energy infiltration ratio
Battery energy storage frequency modulation pricing scheme.Based on battery energy storage according to frequency modulation fix a price unrestricted choice participate in power grid frequency modulation and energy arbitrage this
A precondition, grid dispatching center, which needs to fix a price by frequency modulation, guides battery energy storage to participate in power grid frequency modulation, meets new energy with this
The frequency modulation of electric system needs when source is permeated at high proportion.The present invention provides base for encouragement battery energy storage active response FM signal
It is quasi-.
The present invention adopts the following technical scheme that for achieving the above object
A kind of battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, acquisition new energy infiltration ratio and power grid
The essential information of frequency modulation permeates ratio-dependent battery energy storage according to new energy and tracks FM signal aimed at precision, obtains and participate in electricity
The essential information of the battery energy storage of net frequency modulation, set up battery energy storage frequency modulation price initial value, use dynamic programming method according to
Upper information establishes battery energy storage to the tracking decision model of FM signal, participates in grid service Income Maximum with battery energy storage and turns to
Target calculates the battery energy storage under current frequency modulation price to the tracking decision of FM signal, calculates battery energy storage tracking with this
The precision of FM signal updates battery energy storage frequency modulation price on the basis of not less than battery energy storage tracking FM signal aimed at precision
Until battery energy storage tracking accuracy reaches unanimity with aimed at precision in the frequency modulation period.
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, ratio-dependent electricity is permeated according to new energy
The method of pond energy storage tracking FM signal aimed at precision are as follows: using linear relationship description tracking FM signal aimed at precisionWith
Electric system new energy permeates ratio α, i.e., It indicates in the T period, battery energy storage tracks the essence of FM signal
Degree is not less thanT represents several hours；A, b is respectively the Monomial coefficient and constant term of linear representation.
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, battery energy storage is established to FM signal
Track decision model method particularly includes:
Firstly, defining the state variable of battery energy storage response FM signal based on dynamic programming algorithm are as follows:CtFor t moment battery energy storage capacity, DtFor t moment FM signal (MW), variation in usual 4 seconds is primary,
For t moment electricity market node electricity price, variation in usual 5 minutes is once.Secondly, defining the decision of battery energy storage response FM signal
Variable isIt is primary to change every 4 seconds decisions with FM signal for the power (MW) for representing t moment battery energy storage response FM signal.
Finally, according to state variable StAnd decision variablePrimarily determine that battery energy storage participates in the obtained revenue function of power grid activity are as follows:
Wherein,Expression t moment battery energy storage state variable is StWhen, it makes a policyWhen battery energy storage participate in
The obtained income of power grid activity；For the frequency modulation base value of battery energy storage, the charge/discharge state that t moment battery energy storage is in is represented
(MW),Battery energy storage charging is represented,Represent battery energy storage electric discharge；ηdFor the electric discharge of battery energy storage
Efficiency；Δ t=4s indicates that variation in FM signal every 4 seconds is primary.
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, the electricity under current frequency modulation price is calculated
Pond energy storage is to the tracking decision of FM signal method particularly includes:
Calculate battery energy storage frequency modulation base value
Battery energy storage is calculated to the tracking decision of FM signal
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, battery energy storage frequency modulation base value is calculated
When, set battery energy storage frequency modulation base valueFollow variation in electricity market node electricity price every 5 minutes primary, then t moment battery energy storage
Participate in power grid activity profit function are as follows:
Wherein,Indicate the state variable of t moment battery energy storage；Indicate t moment electricity
Pond energy storage state isWhen, determine battery energy storage frequency modulation base valueWhen battery energy storage participate in the obtained income of power grid activity；τ=
300s,Battery energy storage responds the charge/discharge energy of FM signal during respectively indicating t to the t+ τ moment；ηcFor battery
Energy storage charge efficiency.
Power grid activity profit maximum, which is participated in, with battery energy storage turns to target calculating battery energy storage frequency modulation base valueIn order to
Battery energy storage Income Maximum value in each moment and T period is solved, obtains the shape of t moment to t+ τ moment battery energy storage capacity
State equation of transfer are as follows:Indicate t moment and t+ τ moment battery energy storage
The relationship of capacity.New battery energy storage revenue function is defined according to state transition equation are as follows:
Wherein,Indicate that t moment to the last one moment battery energy storage participates in the obtained income of power grid activity most
Big value； Indicate that t+ τ moment to the last one moment battery energy storage participates in power grid activity and obtained
The maximum value of income.Battery energy storage Income Maximum value in each moment and T period is finally obtained by recursive algorithm, so that it is determined that
The frequency modulation base value of battery energy storage
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, battery energy storage is calculated to FM signal
Track decisionWhen, tracking decision of the setting battery energy storage to FM signalIt is primary with variation in FM signal every 4 seconds, then when t
It carves battery energy storage and participates in the obtained revenue function of power grid activity are as follows:
Wherein,Indicate the state variable of t moment battery energy storage；When representing t
Carving battery energy storage state isWhen, determine the decision of battery energy storage response FM signalWhen battery energy storage participate in power grid activity
Obtained income；Indicate the income for not responding FM signal loss, K indicates battery storage in the T period
Can submit a tender power.
Target, which is turned to, with battery energy storage Income Maximum calculates battery energy storage to the tracking decision of FM signalIn order to solve
The maximum value of battery energy storage income, obtains the shape of t moment to t+ time Δt battery energy storage capacity in each moment and T period
State equation of transfer are as follows:Indicate that t moment and t+ time Δt battery are stored up
The relationship of energy capacity.New battery energy storage revenue function is defined according to state transition equation are as follows:
Wherein,Indicate that t moment to the last one moment battery energy storage participates in the obtained income of power grid activity most
Big value； Indicate that t+ time Δt to the last one moment battery energy storage participates in electricity
The maximum value of the obtained income of net activity.Battery energy storage Income Maximum in each moment and T period is finally obtained by recursive algorithm
Value, so that it is determined that tracking decision of the battery energy storage to FM signal
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, calculates battery energy storage and track FM signal
The method of precision are as follows: by the decision variable of battery energy storage response FM signalCalculate battery energy storage actual tracking FM signal
Precision are as follows:
Wherein, GTIndicate the precision of battery energy storage actual tracking FM signal in the T period；DtIndicate the FM signal of t moment
(MW), Dt> 0, which represents power grid, needs battery energy storage to discharge, Dt< 0, which represents power grid, needs battery energy storage to charge；Indicate battery
The decision variable of energy storage response FM signalWith FM signal DtDifference；K indicates battery energy storage bid power in the T period,
Represent the power maximum value that battery energy storage participates in power grid frequency modulation.
As the battery energy storage frequency modulation pricing scheme based on new energy infiltration ratio, the side of battery energy storage frequency modulation price is determined
Method are as follows: to track aimed at precision not less than energy storageOn the basis of constantly update battery energy storage frequency modulation price until current energy storage with
Track precision GTIt reaches unanimity with tracking aimed at precision.IfThen increase frequency modulation priceEnergy storage is recalculated to frequency modulation
The tracking decision of signalIfThen reduce frequency modulation priceRecalculate decisionUntil the tracking essence acquired
Spend it is eligible until, show that battery energy storage frequency modulation at this time is priced at end value.
The present invention by adopting the above technical scheme, has the advantages that
(1) the frequency modulation pricing method proposed by the invention based on new energy infiltration ratio, seeps according to the new energy of acquisition
Saturating ratio-dependent battery energy storage tracks FM signal aimed at precision, participates in power grid frequency modulation resource point by battery energy storage of aimed at precision
The foundation matched establishes battery energy storage to FM signal according to the battery energy storage essential information of acquisition and power grid frequency modulation essential information
Decision model is tracked, target dynamic is turned to battery energy storage participation grid service Income Maximum and cooks up the current lower electricity of frequency modulation price
The charge-discharge electric power and battery energy storage that pond energy storage responds FM signal not only allow for energy storage to the tracking decision of FM signal
Participate in the income of frequency modulation, it is also contemplated that energy storage participates in the income of other grid services, and battery energy storage tracking is adjusted within the frequency modulation period
During the precision of frequency signal constantly approaches aimed at precision, the power of the battery energy storage response FM signal of decision can be objective
Reflect that energy storage participates in the situation of the other services of power grid, determining battery energy storage frequency modulation price is more reasonable；
(2) the frequency modulation pricing method proposed by the invention based on new energy infiltration ratio, is asked using dynamic programming algorithm
Electrolytic cell energy storage is to the tracking decision of FM signal, the problem of the problem of long period is divided into multiple short time periods,
Algorithm flexibility ratio is high, not only reduces the solution difficulty of problem, also reflects battery energy storage and participates in the movable dynamic evolution of power grid
Process updates battery energy storage frequency modulation price by dynamic programming algorithm iteration, improves the accuracy and accuracy of calculated result,
Improve the confidence level of the invention.
Detailed description of the invention
Fig. 1 is the flow diagram of battery energy storage frequency modulation pricing method of the present invention.
Specific embodiment
The technical solution of invention is described in detail with reference to the accompanying drawing.
It is disclosed by the invention based on new energy infiltration ratio battery energy storage frequency modulation pricing method as shown in Figure 1, comprising with
Lower five steps.
Step 1: obtaining electric system new energy infiltration ratio and its frequency modulation essential information
1) electricity market node electricity price V in the T periodE, variation in usual 5 minutes is once；UsingIndicate the node electricity of t moment
Valence；The T period indicates several hours.
2) new energy permeates ratio α in the T period, and variation in usual one hour is primary.
3) history FM signal D in the T periodt, variation in usual 4 seconds is once.
Step 2: determining the aimed at precision of battery energy storage tracking FM signal
The aimed at precision of battery energy storage tracking FM signal is determined according to the obtained new energy infiltration ratio α in step 1Indicate that battery energy storage tracks FM signal aimed at precision in the T period.
The present invention describes battery energy storage tracking FM signal aimed at precision using linear relationshipWith the new energy of electric system
Ratio α is permeated in source, i.e.,A, b is respectively the Monomial coefficient and constant term of linear representation.Assuming that linear close
System isWhen new energy infiltration ratio is 40%, the precision that battery energy storage tracks FM signal is not less than 0.8；
When new energy infiltration ratio is 20%, then the precision of battery energy storage tracking FM signal is not less than 0.6.
Step 3: calculating the charge-discharge electric power of battery energy storage response FM signal
Present invention assumes that by adjusting frequency modulation priceIt can achieve regulating cell energy storage and participate in the enthusiasm of frequency modulation in turn
Influence the precision of tracking FM signal in its T period.It indicates the frequency modulation price in the T period, and is kept not within the period
Become, is one of the key index that battery energy storage participates in that frequency modulation obtains income, unit $/MWh.
The essential information of (3-1) acquisition battery energy storage
The essential information of battery energy storage is as follows: the rated capacity C of battery energy storagerated；The efficiency for charge-discharge η of battery energy storagec、
ηd；The rated power P of battery energy storagerated；Battery energy storage bid power K in the T period.
(3-2) sets battery energy storage frequency modulation price initial value
(3-3) establishes battery energy storage to the tracking decision model of FM signal based on Dynamic Programming
1) state variable of battery energy storage response FM signal is defined
Wherein, CtFor the capacity (MWh) of t moment battery energy storage；DtRepresent t moment FM signal (MW), Dt> 0 indicates electricity
Net needs battery energy storage to discharge, Dt< 0 expression power grid needs battery energy storage to charge；Represent t moment electricity market node electricity price.
2) decision variable of battery energy storage response FM signal is defined
The power (MW) for representing t moment battery energy storage response FM signal changes every 4 seconds decisions one with FM signal
It is secondary.Decision variableBattery energy storage rated capacity and the rated power constraint for needing to meet are as follows:
Wherein, Δ t=4s indicates that the every 4s variation of FM signal is primary.It is battery energy storage frequency modulation base value, represents battery storage
It is primary to set variation in every 5 minutes for the charge/discharge state (MW) that energy t moment is in.Battery energy storage charging is represented,Represent battery energy storage electric discharge.
3) determine that the state transition equation of t to t+ time Δt battery energy storage capacity is as follows:
4) it is as follows to primarily determine that battery energy storage participates in the movable revenue function of power grid:
Wherein,T moment battery energy storage state is represented as StWhen, it makes a policyWhen battery energy storage participate in power grid
The obtained income of activity.
(3-4) calculates battery energy storage frequency modulation base value
Battery energy storage frequency modulation base valueSetting follows variation in node electricity price every 5 minutes primary, when can obtain t moment to t+ τ
The state transition equation for carving battery energy storage capacity is as follows:
Wherein, τ=300s,Battery energy storage responds the discharge/charge of FM signal during indicating t to the t+ τ moment
Electric flux is trained by history frequcny modulation data and is obtained.
In the operational process of battery energy storage, even if FM signal power reaches maximum value K, battery energy storage frequency modulation base value
Still need to the rated capacity for meeting battery energy storage and rated power constraint.So calculating battery energy storage frequency modulation base valueWhen, it needs
The constraint of satisfaction is as follows:
Wherein, G 'τ∈ [0,1] be to t moment to t+ τ moment during battery energy storage response FM signal precision carry out
It is assumed that and being remained unchanged within the period.As G 'τWhen=0, represents t moment and do not tracked completely to battery energy storage during the t+ τ moment
FM signal；As G 'τWhen=1, battery energy storage perfect tracking signal is represented.
Therefore, t moment battery energy storage frequency modulation base value is calculatedUsed battery energy storage revenue function is as follows:
Wherein,WithRepresent t moment battery energy storage state asWhen, determine that battery stores up
It can frequency modulation base valueWhen battery energy storage participate in the obtained income of power grid activity.
Energy storage in order to solve each moment and the overall situation participates in the income optimal solution of frequency modulation, using the graceful Optimality equations of Bell
The Income Maximum value that frequency modulation is participated in indicate t moment to the last one moment energy storage, defines new battery energy storage revenue function such as
Under:
Formula (5) shows the relationship between t moment and t+ τ moment battery energy storage revenue function, most by recursive algorithm
It is obtained in the T period eventually and the maximum value of each moment battery energy storage income, so that it is determined that the frequency modulation base value of battery energy storageWith it is every
The precision G ' of battery energy storage tracking FM signal in a 5 minutesτ, G 'τIndicate battery energy storage tracking FM signal in every five minutes
Dynamics, the value are constant within entire 5 minutes periods.
(3-5) calculates battery energy storage to the tracking decision of FM signal
The decision model of battery energy storage tracking FM signal is solved, variation in FM signal every 4 seconds is primary.At each 5 minutes
In period,And node electricity priceIt remains unchanged, unique variable is the power of energy storage response FM signalIt therefore, can be proper
The state variable of preceding battery energy storage isAt this time shown in battery energy storage state transition equation such as formula (1), about
Beam condition is as follows:
Indicate t moment decision variableMeet rated capacity constraint,
Indicate t moment decision variableMeet the constraint of battery energy storage rated power,
Indicate t moment decision variableMeet battery energy storage tracking dynamics constraint, G 'τIt indicates
The dynamics of battery energy storage response FM signal must not be lower than G ' in each 5 minutesτ。
It is as follows that t moment battery energy storage revenue function can be obtained:
Wherein,Represent t moment battery energy storage state asWhen, determine that battery energy storage responds FM signal
DecisionWhen battery energy storage participate in the obtained income of power grid activity；Expression does not respond FM signal
The income of loss, K indicate battery energy storage bid power in the T period.
It is as follows to define new battery energy storage revenue function:
It is obtained in the T period by the revenue function by recursive algorithm and the maximum value of each moment battery energy storage income, from
And determine the decision variable of battery energy storage response FM signal
Step 4: calculating the precision G of battery energy storage tracking FM signal in the T periodT
By the decision variable of battery energy storage response FM signalCalculate the essence of actual battery energy storage tracking FM signal
It spends as follows:
Wherein, GtIt is the precision index for measuring t moment battery energy storage tracking FM signal；Formula (8) indicates the t moment to t
The state transition equation of+time Δt battery energy storage tracking accuracy；GTIndicate the essence of battery energy storage tracking FM signal in the T period
Degree；VTIt represents battery energy storage in the T period and participates in the income that frequency modulation obtains.
Step 5: determining that battery energy storage frequency modulation is fixed a price
The tracking accuracy G that step 4 is obtainedTWith the aimed at precision in step 2It is compared, ifThen
Increase frequency modulation priceReturn step (3-2)；IfThen reduce frequency modulation priceIt returns (3-2), until finding qualified and aimed at precisionImmediate GT, export at this time
Frequency modulation priceIt is illustrated below with reference to beneficial effect of the embodiment to technical solution of the present invention.
Assuming that tracking aimed at precision is with electric system new energy infiltration proportionate relationshipBattery energy storage
Rated capacity Crated=0.5MWh；The efficiency for charge-discharge η of battery energy storagec=0.9, ηd=0.9；The rated power of battery energy storage
Prated=1MW；T=2.5 hours, battery energy storage bid power K=1MW in the T period.Set battery energy storage frequency modulation price initial valueCalculating new energy infiltration ratio α is 0.1,0.2,0.3, the 0.4 battery energy storage frequency modulation in the case of these four
Price, as shown in Table 1, final frequency modulation price value are respectively as follows: α=0.1,α=0.2,α=0.3,α=0.4,It follows that when new energy ratio α constantly increases, battery energy storage tracking accuracyNo
It is disconnected to increase, battery energy storage frequency modulation priceIt increases with it.
Battery energy storage frequency modulation price example in table 1 2.5 hours under different new energy infiltration ratios.
Claims (10)
1. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, which is characterized in that acquisition new energy infiltration
The essential information of ratio and power grid frequency modulation permeates the target essence of ratio-dependent battery energy storage tracking FM signal according to new energy
Degree obtains the essential information for participating in the battery energy storage of power grid frequency modulation, with the capacity of battery energy storage, FM signal, electricity market section
Point electricity price is state variable, using the power of battery energy storage response FM signal as decision variable, establishes battery energy storage and believes frequency modulation
Number tracking decision model, participate in grid service Income Maximum with battery energy storage and turn to target dynamic cooking up current frequency modulation price
The charge-discharge electric power and battery energy storage of lower battery energy storage response FM signal adjust the tracking decision of FM signal according to current
Battery energy storage calculates the tracking decision of FM signal the precision of battery energy storage tracking FM signal in the frequency modulation period under frequency is fixed a price,
Battery energy storage frequency modulation price is updated until in the frequency modulation period on the basis of not less than battery energy storage tracking FM signal aimed at precision
The precision of battery energy storage tracking FM signal reaches unanimity with aimed at precision.
2. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 1
In, it is linear relationship that battery energy storage, which tracks the aimed at precision of FM signal and the relationship of new energy infiltration ratio, Indicate that the lowest accuracy of battery energy storage tracking FM signal in frequency modulation period T, α are that new energy permeates ratio, a, b are respectively
The Monomial coefficient and constant term of linear representation.
3. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 1
In participating in grid service Income Maximum with battery energy storage and turn to target dynamic and cook up current frequency modulation to fix a price lower battery energy storage response
The charge-discharge electric power and battery energy storage of FM signal are to the tracking decision of FM signal method particularly includes:
The battery energy storage established in the electricity market node electricity price control period participates in the revenue function of grid service and determines storage
Each moment battery energy storage participates in the graceful Optimality equations of Bell of grid service maximum return in the energy frequency modulation period, according to energy storage frequency modulation
Each moment battery energy storage participates in the maximum return of grid service and in the value of each moment battery energy storage frequency modulation base value in period
The revenue function that the lower anti-corresponding moment battery energy storage of solution of constraint participates in grid service determines corresponding moment battery energy storage frequency modulation base value；
Revenue function and the determining energy storage frequency modulation for establishing the battery energy storage response FM signal in the FM signal control period are all
The graceful Optimality equations of Bell of each moment battery energy storage response FM signal maximum return in phase, according to every in the energy storage frequency modulation period
One moment battery energy storage responds the maximum return of FM signal and in the value of each moment battery energy storage response FM signal power
The lower anti-revenue function for solving corresponding moment battery energy storage response FM signal of constraint determines that corresponding moment battery energy storage responds frequency modulation
Signal power.
4. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 3
In the battery energy storage in the electricity market node electricity price control period participates in the revenue function of grid service are as follows: Indicate battery energy storage in t
The state at momentLower frequency modulation base value isWhen participate in grid service income,CtFor t moment battery energy storage
Capacity,For t moment electricity market node electricity price, τ is the duration of electricity market Nodal pricing regulating cycle,
Respectively charge volume and discharge capacity of the t moment to battery energy storage response FM signal during the t+ τ moment, t moment to t+ τ moment electricity
The state transition equation of pond stored energy capacitance are as follows:ηc、ηdFor electricity
The efficiency for charge-discharge of pond energy storage.
5. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 3
In the value constraint of each moment battery energy storage frequency modulation base value are as follows:G′τFrequency modulation is tracked for battery energy storage in t moment to t+ τ moment
The precision of signal, K are the bid power of battery energy storage in the frequency modulation period, CratedFor the rated capacity of battery energy storage, PratedFor electricity
The rated power of pond energy storage.
6. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 3
In the revenue function of the battery energy storage response FM signal in the FM signal control period are as follows: Indicate battery energy storage in the state of t momentIt is lower response FM signal power beWhen participate in grid service
Income,Δ t is the control period of FM signal, DtFor the FM signal of t moment,For energy storage tune
Frequency modulation price in frequency period T, state transition equation of the t moment to t+ time Δt battery energy storage capacity are as follows:Ct、Ct+ΔtFor t moment, the appearance of t+ time Δt battery energy storage
Amount.
7. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 3
In the value constraint of each moment battery energy storage response FM signal power has:CtFor the capacity of t moment battery energy storage,The power of FM signal is responded for t moment battery energy storage,For the frequency modulation base value of t moment battery energy storage, Δ t is frequency modulation letter
Number control the period, CratedFor the rated capacity of battery energy storage, PratedFor the rated power of battery energy storage, K is electricity in the frequency modulation period
The bid power of pond energy storage, G 'τThe precision of FM signal is tracked for battery energy storage in t moment to t+ τ moment.
8. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio, feature exist according to claim 1
In battery energy storage calculates battery energy storage tracking in the frequency modulation period to the tracking decision of FM signal and adjusts under fixing a price according to current frequency modulation
The expression formula of the precision of frequency signal are as follows:GTIt is tracked for battery energy storage in frequency modulation period T
The precision of FM signal,The power of FM signal, D are responded for t moment battery energy storagetFor the FM signal of t moment, Δ t is
FM signal controls the period, and K is the bid power of battery energy storage in the frequency modulation period.
9. a kind of battery energy storage frequency modulation pricing method based on new energy infiltration ratio according to claim 1, feature
It is, the method for battery energy storage frequency modulation price is updated on the basis of not less than battery energy storage tracking FM signal aimed at precision are as follows:
Increase electricity when the precision of battery energy storage tracking FM signal is less than battery energy storage tracking FM signal aimed at precision in the frequency modulation period
Pond energy storage frequency modulation price, in the frequency modulation period precision of battery energy storage tracking FM signal be greater than battery energy storage tracking battery energy storage with
Reduce battery energy storage frequency modulation price when track FM signal aimed at precision.
10. a kind of computer storage medium, is stored thereon with computer program, which is characterized in that the program is executed by processor
The Shi Shixian battery energy storage frequency modulation pricing method described in claim 1 based on new energy infiltration ratio.
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| CN110783935A (en) * | 2019-11-13 | 2020-02-11 | 国网江苏省电力有限公司扬州供电分公司 | Method for limiting battery energy storage response frequency modulation signal under charge state |
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| CN110783935A (en) * | 2019-11-13 | 2020-02-11 | 国网江苏省电力有限公司扬州供电分公司 | Method for limiting battery energy storage response frequency modulation signal under charge state |
| CN110783935B (en) * | 2019-11-13 | 2021-04-16 | 国网江苏省电力有限公司扬州供电分公司 | Method for limiting battery energy storage response frequency modulation signal under charge state |
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