CN110311397A - The more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation - Google Patents
The more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation Download PDFInfo
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- CN110311397A CN110311397A CN201910683603.9A CN201910683603A CN110311397A CN 110311397 A CN110311397 A CN 110311397A CN 201910683603 A CN201910683603 A CN 201910683603A CN 110311397 A CN110311397 A CN 110311397A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/50—Controlling the sharing of the out-of-phase component
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Abstract
The invention discloses a kind of more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation, obtain the power prediction curve on the same day including the power curve according to the previous day and extract evaluation parameter；Determine the operating mode of energy-accumulating power station；Idle power output needed for active power output needed for active power output, frequency modulation needed for calculating peak regulation and pressure regulation；Calculate the practical active power output of energy-accumulating power station；Determine the idle power output of energy-accumulating power station.The more scene cooperative control methods of this energy-accumulating power station based on self-adapting estimation provided by the invention, pass through the acquisition of electrical network parameter and the calculating of electric network state, pass through self-adapting estimation network operation state, therefore, it is determined that the operating mode of energy-accumulating power station, and according to the practical active power output and practical idle power output of the operating mode of the energy-accumulating power station of judgement calculating energy-accumulating power station；The method of the present invention can carry out coordination comprehensively control to more operative scenarios of energy-accumulating power station, and the method for the present invention high reliablity, practicability are good, scientific and reasonable and effect is preferable.
Description
Technical field
Present invention relates particularly to a kind of more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation.
Background technique
With the development of economic technology, electric energy has become essential secondary energy sources in people's production and life,
Endless convenience is brought to people's production and life.
Meanwhile as global energy internet is rapidly growing, distributed generation resource accesses the loads such as ratio raising, electric car
Access amount increases, and the synthetic load characteristic complexity of local distribution network increases severely, and thereby results in distribution network load peak-valley difference and increases, is electric
Press the series of problems such as deterioration, power supply reliability reduction and distributed generation resource consumption difficulty.Traditional solution such as increase-volume changes
The methods of make there are performance difficulty or it is less economical the problems such as, and battery energy storage system have configuration flexibly, schedulability it is high
Feature participates in the application of power distribution network peak regulation using it, above-mentioned series of problems can be effectively relieved.
Extensive battery energy storage system has superior peaking performance because of its fast response characteristic, can be in the low power consumption phase
Electric energy is stored as load, discharges electric energy as power supply in peak times of power consumption, realizes decoupling and Load Regulation between power generation and electricity consumption,
Reduction plans peak-valley difference, and its construction is not limited by geographical conditions.
Using battery energy storage system auxiliary pressure regulation (including dynamic reactive supports), it is not being influenced completely in other application field
The application space of energy-storage system has effectively been expanded in effect under scape, improves its utilization efficiency；And because its response it is quick
Property, the transient voltage quality of the node voltage of energy-storage system access node can be significantly improved.
It is most widely used in peak regulation scene due to the energy space-time translation feature of battery energy storage system, in addition to peak regulation,
Energy-storage system may be summarized to be using most occasions: frequency modulation, backup power source, power tracking and inhibition are flashed, wherein also have by
The application range of energy storage is included in pressure regulation.
Peak load shifting is plan type control strategy, the planning of energy storage charge and discharge can be carried out according to the curve predicted, therefore
Need the period of peak load shifting relatively fixed in one day, the load setting energy storage except peak load shifting is in idle state.
Due to the fluctuation and unpredictability of frequency, the time of effect, place are uncertain, the number for the frequency modulation of being carried out in one day
It is limited, if energy-accumulating power station will be substantially reduced as its utilization rate of the equipment of dull frequency, also, generally require needed for the scene of frequency modulation
Stored energy capacitance it is larger, if energy-accumulating power station is configured its capacity applications in frequency modulation, will affect the economy of energy-storage system.For storage
Energy power station participates in pressure regulation scene, the equally low problem of the utilization rate with above-mentioned frequency modulation energy-accumulating power station, and pressure regulation is that progress is idle
Support, and energy-accumulating power station is to active power output, if this will cause to store up using pressure regulation as the purpose of energy-accumulating power station access power grid
Can power station without participation, be only inverter at energy storage node in action.
Currently, existing method can only participate in the applied fields such as peak regulation, primary frequency modulation, frequency modulation frequency modulation, pressure regulation to energy-accumulating power station
Scape carries out single scene planning, has no Collaborative Control when scientific reliable method participates in more scenes to energy-accumulating power station and grinds
Study carefully.
Summary of the invention
The purpose of the present invention is to provide a kind of high reliablity, practicability is good, scientific and reasonable and effect be preferably based on from
Adapt to the more scene cooperative control methods of energy-accumulating power station of identification.
The more scene cooperative control methods of this energy-accumulating power station based on self-adapting estimation provided by the invention, including walk as follows
It is rapid:
S1. according to the power curve of the previous day, the power prediction curve on the same day is obtained, and according to the power prediction on same day song
Line drawing evaluation parameter；
S2. according to the size relation of the step S1 evaluation parameter obtained and given threshold, determine the Working mould of energy-accumulating power station
Formula；
S3. it according to existing peak regulation, frequency modulation, pressure regulation strategy, is calculated active needed for active power output, frequency modulation needed for peak regulation
Idle power output needed for power output and pressure regulation；
S4. according to needed for the step S2 energy-accumulating power station operating mode selected and the peak regulation that is calculated of step S3 it is active go out
Idle power output needed for active power output needed for power, frequency modulation and pressure regulation calculates the practical active power output of energy-accumulating power station；
S5. idle power output and energy-accumulating power station according to needed for power grid voltage regulating determine energy storage electricity for the idle power output of allotment
The idle power output stood.
Evaluation parameter described in step S1 specifically includes maximum amplitude PpremaxWith maximum peak-valley difference Δ Ppre。
According to the size relation of the step S1 evaluation parameter obtained and given threshold described in step S2, energy-accumulating power station is determined
Operating mode, specially using following steps determine energy-accumulating power station operating mode:
If A. maximum amplitude PpremaxGreater than the first given threshold, then the first intermediate variable e=1；Otherwise the first intermediate variable
E=0；
If B. maximum peak-valley difference Δ PpreGreater than the second given threshold, then the second intermediate variable d=1；Otherwise the second centre becomes
Measure d=0；
C. the operating mode of energy-accumulating power station is determined according to following rule:
If e=1 and d=1 assert energy-accumulating power station operating mode are as follows: do not coupled by the peak-frequency regulation of home court scape of peak regulation
Mode；
If e and d are not 1 simultaneously, energy-accumulating power station operating mode is assert are as follows: frequency modulation and peak regulation coupled mode；
If e=0 and d=0 assert energy-accumulating power station operating mode are as follows: do not coupled by the peak-frequency regulation of home court scape of frequency modulation
Mode.
The practical active power output of energy-accumulating power station is calculated described in step S4, is specially calculated using following rule practical active
Power output:
If the operating mode of energy-accumulating power station be using peak regulation as the peak-frequency regulation uncoupled mode formula of home court scape: if Δ Pf≠
0, then Pc=Δ Pf；If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station be using frequency modulation as the peak-frequency regulation uncoupled mode formula of home court scape: if Δ Pp≠
0, then Pc=Δ Pp；If Δ Pp=0 and Δ Pf≠ 0, then Pc=Δ Pf；If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station is frequency modulation and peak regulation coupled mode, algebra superposition Qu Hedai was divided by one day
Number coupled zone；When algebra is superimposed area: if Δ Pf≠ 0 and Δ Pp≠ 0, then Pc=Δ Pf+ΔPp；If Δ Pf≠ 0 and Δ Pp=0,
Then Pc=Δ Pf；If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；If Δ Pf=0 and Δ Pp=0, then Pc=0；In algebra coupled zone
When, if Δ Pf≠ 0 and Δ Pp≠ 0, then it is divided into following 5 kinds of situations: if Δ Pf·ΔPp< 0 and | Δ Pp| < a | Δ Pf|, then Pc=
ΔPf+ΔPp；If Δ Pf·ΔPp< 0 and c | Δ Pf|≥|ΔPp|≥a|ΔPf|, then Pc=Δ Pf+bΔPp；If Δ Pf·ΔPp
< 0 and | Δ Pp| > c | Δ Pf|, then Pc=Δ Pf；If Δ Pf·ΔPp>=0 and
Then Pc=Δ Pf；If Δ Pf·ΔPp>=0 andThen Pc=Δ Pf+ΔPp；
Wherein, a, b, c and d are the constant of setting；ΔPfFor active power output needed for peak regulation, PcFor the theory of energy-accumulating power station
Active power output, Δ PpFor active power output needed for frequency modulation, PpredictFor the power prediction curve on the same day,It is pre- for same day power
Survey the absolute value of plot mean；The method for being divided into algebra superposition area and algebra coupled zone for one day are as follows: whenWhen,
When i.e. the order of magnitude of frequency modulation active power output is much smaller than the order of magnitude of peak regulation active power output, it is active that frequency modulation active power output is equivalent to peak regulation
The real-time correction value of power output is superimposed area for algebra；WhenWhen, i.e. the order of magnitude and peak regulation of frequency modulation active power output are active out
When the order of magnitude of power is suitable, influence when meeting frequency modulation application scenarios to peak regulation effect cannot be ignored, be algebra coupled zone；Wherein
Et is the threshold value of setting.
The practical active power output of the calculating specially repairs the practical active power output of calculating using following formula
Just:
The maximum value P of energy-accumulating power station active power output value is determined firstcmaxWith minimum value Pcmin；And by maximum value and minimum value
Between ordinate be divided into N parts；N is natural number；
The value for setting ordinate bisector is respectively P from small to largec1,Pc2,...,Pc(N-1)；
If Pcmin≤Pc< Pc1, then the practical active power output value of revised energy-accumulating power station be
If Pci≤Pc< Pc(i+1), then the practical active power output value of revised energy-accumulating power station be
If Pc(N-1)≤Pc< Pcmax, then the practical active power output value of revised energy-accumulating power station be
Wherein, 1≤i < N-1 and i are integer, PcFor the practical active power output of the energy-accumulating power station before amendment.
The idle power output of determination energy-accumulating power station described in step S5 specially determines the nothing of energy-accumulating power station using following steps
Function power output:
(1) energy-accumulating power station is calculated for the idle power output Q of allotment using following formulac:
Wherein S is the apparent energy of inverter where energy-accumulating power station；For the practical active power output of energy-accumulating power station；
(2) idle power output and energy-accumulating power station according to needed for pressure regulation for the idle power output of allotment size, using as follows
Rule determines the idle power output of energy-accumulating power station:
If idle power output needed for pressure regulation be less than or equal to energy-accumulating power station for allotment idle power output, energy-accumulating power station
Idle power output is idle power output needed for pressure regulation；
If idle power output needed for pressure regulation be greater than energy-accumulating power station for allotment idle power output, energy-accumulating power station it is idle go out
Power is 0, and idle power output needed for the offer pressure regulation of the reactive-load compensator as being equipped with.
After energy-accumulating power station has carried out frequency modulation and pressure regulation is applied, need to correct subsequent peak clipping line and valley-fill line, to protect
Demonstrate,prove the SOC state of the energy-storage battery of energy-accumulating power station.
The subsequent peak clipping line of the amendment and valley-fill line, be specially modified using following rule: being moved up or under
Peak clipping line is moved, while moving up or down valley-fill line, thus guarantee the initial position that plan is returned to after complete 24 hours, and
Peak clipping line and valley-fill line are adjusted in the period of last several wave crests and trough pair.
Described last several wave crests and trough pair, the specially following constraint condition of use determine several last
Wave crest and trough pair:
Objective function: the number of wave crest and trough pair is minimum；
Constraint condition: the electricity adjustment amount of the energy-accumulating power station power output in set each peak clipping stage and valley-fill stage does not surpass
The adjustment amount of the a% or peak clipping line or valley-fill line that cross former energy-accumulating power station power output electricity are no more than former peak clipping line or valley-fill line
B%；A and b is positive number.
The more scene cooperative control methods of this energy-accumulating power station based on self-adapting estimation provided by the invention, are joined by power grid
The calculating of several acquisition and electric network state, by self-adapting estimation network operation state, therefore, it is determined that the work of energy-accumulating power station
Mode, and according to the practical active power output and practical idle power output of the operating mode of the energy-accumulating power station of judgement calculating energy-accumulating power station；
The method of the present invention can carry out coordination comprehensively control to more operative scenarios of energy-accumulating power station, and the method for the present invention high reliablity,
Practicability is good, scientific and reasonable and effect is preferable.
Detailed description of the invention
Fig. 1 is the method flow schematic diagram of the method for the present invention.
Specific embodiment
It is as shown in Figure 1 the method flow schematic diagram of the method for the present invention: provided by the invention this based on self-adapting estimation
The more scene cooperative control methods of energy-accumulating power station, include the following steps:
S1. according to the power curve of the previous day, the power prediction curve on the same day is obtained, and according to the power prediction on same day song
Line drawing evaluation parameter specifically includes maximum amplitude PpremaxWith maximum peak-valley difference Δ Ppre；
S2. according to the size relation of the step S1 evaluation parameter obtained and given threshold, determine the Working mould of energy-accumulating power station
Formula；The operating mode of energy-accumulating power station is specially determined using following steps:
If A. maximum amplitude PpremaxGreater than the first given threshold, then the first intermediate variable e=1；Otherwise the first intermediate variable
E=0；
If B. maximum peak-valley difference Δ PpreGreater than the second given threshold, then the second intermediate variable d=1；Otherwise the second centre becomes
Measure d=0；
C. the operating mode of energy-accumulating power station is determined according to following rule:
If e=1 and d=1 assert energy-accumulating power station operating mode are as follows: do not coupled by the peak-frequency regulation of home court scape of peak regulation
Mode；
If e and d are not 1 simultaneously, energy-accumulating power station operating mode is assert are as follows: frequency modulation and peak regulation coupled mode；
If e=0 and d=0 assert energy-accumulating power station operating mode are as follows: do not coupled by the peak-frequency regulation of home court scape of frequency modulation
Mode；
In the specific implementation, the basic threshold line P of evaluation parameter is setpremax0(the first above-mentioned given threshold), Δ Ppre0
(the second above-mentioned given threshold), the basic threshold line Ppremax0、ΔPpre0It is the consumption energy of the power grid at this according to reality
Determined by power, local power grid determines the maximum peak-valley difference Δ P that power grid can dissolve according to its digestion capabilitypreMaximum value and most
Amplitude PpremaxMaximum value；Further, the maximum peak-valley difference Δ PpreMaximum value can be specified for local unit
The 20% of power, the maximum amplitude PpremaxMaximum value can be 1.2 times of local unit rated power；
S3. it according to existing peak regulation, frequency modulation, pressure regulation strategy, is calculated active needed for active power output, frequency modulation needed for peak regulation
Idle power output needed for power output and pressure regulation；
S4. according to needed for the step S2 energy-accumulating power station operating mode selected and the peak regulation that is calculated of step S3 it is active go out
Idle power output needed for active power output needed for power, frequency modulation and pressure regulation calculates the practical active power output of energy-accumulating power station；Specially using such as
Lower step calculates practical active power output:
A. the theoretical active power output of energy-accumulating power station is calculated according to following rule:
If the operating mode of energy-accumulating power station be using peak regulation as the peak-frequency regulation uncoupled mode formula of home court scape:
If Δ Pf≠ 0, then Pc=Δ Pf；
If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；
If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station be using frequency modulation as the peak-frequency regulation uncoupled mode formula of home court scape:
If Δ Pp≠ 0, then Pc=Δ Pp；
If Δ Pp=0 and Δ Pf≠ 0, then Pc=Δ Pf；
If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station is frequency modulation and peak regulation coupled mode, algebra superposition Qu Hedai was divided by one day
Number coupled zone；
When algebra is superimposed area:
If Δ Pf≠ 0 and Δ Pp≠ 0, then Pc=Δ Pf+ΔPp；
If Δ Pf≠ 0 and Δ Pp=0, then Pc=Δ Pf；
If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；
If Δ Pf=0 and Δ Pp=0, then Pc=0；
At algebra coupled zone: if Δ Pf≠ 0 and Δ Pp≠ 0, then it is divided into following 5 kinds of situations:
If Δ Pf·ΔPp< 0 and | Δ Pp| < a | Δ Pf|, then Pc=Δ Pf+ΔPp；
If Δ Pf·ΔPp< 0 and c | Δ Pf|≥|ΔPp|≥a|ΔPf|, then Pc=Δ Pf+bΔPp；
If Δ Pf·ΔPp< 0 and | Δ Pp| > c | Δ Pf|, then Pc=Δ Pf；
If Δ Pf·ΔPp>=0 andThen Pc=Δ Pf；
If Δ Pf·ΔPp>=0 andThen Pc=Δ Pf+ΔPp；
Wherein, a, b, c and d are the constant of setting；ΔPfFor active power output needed for peak regulation, PcFor the theory of energy-accumulating power station
Active power output, Δ PpFor active power output needed for frequency modulation, PpredictFor the power prediction curve on the same day,It is pre- for same day power
Survey the absolute value of plot mean；
The method for being divided into algebra superposition area and algebra coupled zone for one day are as follows: whenWhen, i.e., frequency modulation is active out
When the order of magnitude of power is much smaller than the order of magnitude of peak regulation active power output, frequency modulation active power output is equivalent to repairing in real time for peak regulation active power output
Positive value is superimposed area for algebra；WhenWhen, i.e. the order of magnitude phase of the order of magnitude of frequency modulation active power output and peak regulation active power output
At that time, influence when meeting frequency modulation application scenarios to peak regulation effect cannot be ignored, be algebra coupled zone；Wherein et is the threshold of setting
Value and typical value are 10, can also be with value for 100,1000 etc.；
In the specific implementation, (0,0.5) a ∈, b ∈ (0,1), c ∈ (0.5,1.5), d ∈ [0.1,0.3]；
In the specific implementation, it was divided into the area Liang Lei great, respectively algebra superposition area and algebra coupled zone by one day, divides two
The reason of area Lei great is: when being in Wave crest and wave trough position, peak regulation is in key position, and simple algebra superposition will affect tune
Peak effect.Algebra coupled zone can be determined according to the power curve of different zones, can be noon peak, evening peak, night low ebb
Region, or the noon peak, night low ebb region, or the region of evening peak, night low ebb.This is because these are crucial
If there is the importing of frequency modulation correction amount in position, index is not achieved or in charge period underfill in the effect that may cause peak load shifting
Electricity.The specific time on noon peak can be 10:00-13:00, and the specific time of evening peak can be 16:00-19:00, night low ebb
Time can be 24:00-6:00；In addition to other periods in one day of algebra coupled zone are that algebra is superimposed area；
B. the theoretical active power output of the obtained energy-accumulating power station of step a is modified using following rule, to be stored up
The practical active power output in energy power station:
The maximum value P of energy-accumulating power station active power output value is determined firstcmaxWith minimum value Pcmin；And by maximum value and minimum value
Between ordinate be divided into N parts；N is natural number；
The value for setting ordinate bisector is respectively P from small to largec1,Pc2,...,Pc(N-1)；
Work as Pcmin≤Pc< Pc1When, the practical active power output value of energy-accumulating power station is
Work as Pci≤Pc< Pc(i+1)When, the practical active power output value of energy-accumulating power station is
Work as Pc(N-1)≤Pc< PcmaxWhen, the practical active power output value of energy-accumulating power station isWherein,
1≤i < N-1 and i are integer；
S5. idle power output and energy-accumulating power station according to needed for power grid voltage regulating determine energy storage electricity for the idle power output of allotment
The idle power output stood；The idle power output of energy-accumulating power station is specially determined using following steps:
(1) energy-accumulating power station is calculated for the idle power output Q of allotment using following formulac:
Wherein S is the apparent energy of inverter where energy-accumulating power station；For the practical active power output of energy-accumulating power station；
(2) idle power output and energy-accumulating power station according to needed for pressure regulation for the idle power output of allotment size, using as follows
Rule determines the idle power output of energy-accumulating power station:
If idle power output needed for pressure regulation be less than or equal to energy-accumulating power station for allotment idle power output, energy-accumulating power station
Idle power output is idle power output needed for pressure regulation；
If idle power output needed for pressure regulation be greater than energy-accumulating power station for allotment idle power output, energy-accumulating power station it is idle go out
Power is 0, and idle power output needed for the offer pressure regulation of the reactive-load compensator as being equipped with.
After energy-accumulating power station has carried out frequency modulation and pressure regulation is applied, need to correct subsequent peak clipping line and valley-fill line, to protect
Demonstrate,prove the SOC state of the energy-storage battery of energy-accumulating power station.Subsequent peak clipping line and valley-fill line are corrected, is specially carried out using following rule
Amendment: peak clipping line is moved up or down, while moving up or down valley-fill line, to guarantee to return to meter after complete 24 hours
The initial position drawn, and peak clipping line and valley-fill line are adjusted in the period of last several wave crests and trough pair.
In the specific implementation, last several wave crests and trough pair are determined last several using following constraint condition
A wave crest and trough pair:
Objective function: the number of wave crest and trough pair is minimum；
Constraint condition: the electricity adjustment amount of the energy-accumulating power station power output in set each peak clipping stage and valley-fill stage does not surpass
The adjustment amount of the a% or peak clipping line or valley-fill line that cross former energy-accumulating power station power output electricity are no more than former peak clipping line or valley-fill line
B%；A and b is positive number.
Claims (9)
1. a kind of more scene cooperative control methods of energy-accumulating power station based on self-adapting estimation, include the following steps:
S1. according to the power curve of the previous day, the power prediction curve on the same day is obtained, and is mentioned according to the power prediction curve on the same day
Take evaluation parameter；
S2. according to the size relation of the step S1 evaluation parameter obtained and given threshold, determine the operating mode of energy-accumulating power station；
S3. according to existing peak regulation, frequency modulation, pressure regulation strategy, active power output needed for active power output, frequency modulation needed for peak regulation is calculated
With idle power output needed for pressure regulation；
S4. active power output, tune according to needed for the peak regulation that the step S2 energy-accumulating power station operating mode selected and step S3 are calculated
Idle power output needed for active power output and pressure regulation needed for frequency calculates the practical active power output of energy-accumulating power station；
S5. idle power output and energy-accumulating power station according to needed for power grid voltage regulating determine energy-accumulating power station for the idle power output of allotment
Idle power output.
2. the more scene cooperative control methods of the energy-accumulating power station according to claim 1 based on self-adapting estimation, feature exist
The evaluation parameter described in step S1 specifically includes maximum amplitude PpremaxWith maximum peak-valley difference Δ Ppre。
3. the more scene cooperative control methods of the energy-accumulating power station according to claim 2 based on self-adapting estimation, feature exist
According to the size relation of the step S1 evaluation parameter obtained and given threshold described in the step S2, the work of energy-accumulating power station is determined
Mode specially determines the operating mode of energy-accumulating power station using following steps:
If A. maximum amplitude PpremaxGreater than the first given threshold, then the first intermediate variable e=1；Otherwise the first intermediate variable e=
0；
If B. maximum peak-valley difference Δ PpreGreater than the second given threshold, then the second intermediate variable d=1；Otherwise the second intermediate variable d
=0；
C. the operating mode of energy-accumulating power station is determined according to following rule:
If e=1 and d=1 assert energy-accumulating power station operating mode are as follows: using peak regulation as the peak-frequency regulation uncoupled mode formula of home court scape；
If e and d are not 1 simultaneously, energy-accumulating power station operating mode is assert are as follows: frequency modulation and peak regulation coupled mode；
If e=0 and d=0 assert energy-accumulating power station operating mode are as follows: using frequency modulation as the peak-frequency regulation uncoupled mode formula of home court scape.
4. the more scene cooperative control methods of energy-accumulating power station described according to claim 1~one of 3 based on self-adapting estimation,
It is characterized in that calculating the practical active power output of energy-accumulating power station described in step S4, specially be calculated using following rule practical active
Power output:
If the operating mode of energy-accumulating power station be using peak regulation as the peak-frequency regulation uncoupled mode formula of home court scape: if Δ Pf≠ 0, then Pc
=Δ Pf；If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station be using frequency modulation as the peak-frequency regulation uncoupled mode formula of home court scape: if Δ Pp≠ 0, then Pc
=Δ Pp；If Δ Pp=0 and Δ Pf≠ 0, then Pc=Δ Pf；If Δ Pf=0 and Δ Pp=0, then Pc=0；
If the operating mode of energy-accumulating power station is frequency modulation and peak regulation coupled mode, algebra superposition area and algebra coupling were divided by one day
Close area；When algebra is superimposed area: if Δ Pf≠ 0 and Δ Pp≠ 0, then Pc=Δ Pf+ΔPp；If Δ Pf≠ 0 and Δ Pp=0, then Pc=
ΔPf；If Δ Pf=0 and Δ Pp≠ 0, then Pc=Δ Pp；If Δ Pf=0 and Δ Pp=0, then Pc=0；At algebra coupled zone, if
ΔPf≠ 0 and Δ Pp≠ 0, then it is divided into following 5 kinds of situations: if Δ Pf·ΔPp< 0 and | Δ Pp| < a | Δ Pf|, then Pc=Δ Pf+
ΔPp；If Δ Pf·ΔPp< 0 and c | Δ Pf|≥|ΔPp|≥a|ΔPf|, then Pc=Δ Pf+bΔPp；If Δ Pf·ΔPp< 0 and
|ΔPp| > c | Δ Pf|, then Pc=Δ Pf；If Δ Pf·ΔPp>=0 andThen
Pc=Δ Pf；If Δ Pf·ΔPp>=0 andThen Pc=Δ Pf+ΔPp；
Wherein, a, b, c and d are the constant of setting；ΔPfFor active power output needed for peak regulation, PcIt is active for the theory of energy-accumulating power station
Power output, Δ PpFor active power output needed for frequency modulation, PpredictFor the power prediction curve on the same day,It is bent for same day power prediction
The absolute value of line average value；
The method for being divided into algebra superposition area and algebra coupled zone for one day are as follows: whenWhen for algebra be superimposed area；WhenWhen be algebra coupled zone；Wherein et is the threshold value of setting.
5. the more scene cooperative control methods of the energy-accumulating power station according to claim 4 based on self-adapting estimation, feature exist
In the practical active power output of calculating, specially the practical active power output of calculating is modified using following formula:
The maximum value P of energy-accumulating power station active power output value is determined firstcmaxWith minimum value Pcmin；And it will be between maximum value and minimum value
Ordinate be divided into N parts；N is natural number；
The value for setting ordinate bisector is respectively P from small to largec1,Pc2,...,Pc(N-1)；
If Pcmin≤Pc< Pc1, then the practical active power output value of revised energy-accumulating power station be
If Pci≤Pc< Pc(i+1), then the practical active power output value of revised energy-accumulating power station be
If Pc(N-1)≤Pc< Pcmax, then the practical active power output value of revised energy-accumulating power station be
Wherein, 1≤i < N-1 and i are integer, PcFor the practical active power output of the energy-accumulating power station before amendment.
6. the more scene cooperative control methods of the energy-accumulating power station according to claim 5 based on self-adapting estimation, feature exist
The idle power output of the determination energy-accumulating power station described in step S5, specially using following steps determine energy-accumulating power station it is idle go out
Power:
(1) energy-accumulating power station is calculated for the idle power output Q of allotment using following formulac:
Wherein S is the apparent energy of inverter where energy-accumulating power station；For the practical active power output of energy-accumulating power station；
(2) idle power output and energy-accumulating power station according to needed for pressure regulation for the idle power output of allotment size, using following rule
Determine the idle power output of energy-accumulating power station:
If idle power output needed for pressure regulation be less than or equal to energy-accumulating power station for allotment idle power output, energy-accumulating power station it is idle
Power output is idle power output needed for pressure regulation；
If idle power output needed for pressure regulation is greater than energy-accumulating power station for the idle power output of allotment, the idle power output of energy-accumulating power station is
0, and idle power output needed for the offer pressure regulation of the reactive-load compensator as being equipped with.
7. the more scene cooperative control methods of the energy-accumulating power station according to claim 6 based on self-adapting estimation, feature exist
In after energy-accumulating power station has carried out frequency modulation and pressure regulation is applied, need to correct subsequent peak clipping line and valley-fill line, to guarantee energy storage
The SOC state of the energy-storage battery in power station.
8. the more scene cooperative control methods of the energy-accumulating power station according to claim 7 based on self-adapting estimation, feature exist
In the subsequent peak clipping line of amendment and valley-fill line, specially it is modified using following rule: moves up or down peak clipping
Line, while valley-fill line is moved up or down, to guarantee the initial position for returning to plan after complete 24 hours, and last
Several wave crests and period of trough pair adjust peak clipping line and valley-fill line.
9. the more scene cooperative control methods of the energy-accumulating power station according to claim 8 based on self-adapting estimation, feature exist
In described last several wave crests and trough pair, specially using following constraint condition determine last several wave crests with
Trough pair:
Objective function: the number of wave crest and trough pair is minimum；
Constraint condition: the electricity adjustment amount of the energy-accumulating power station power output in set each peak clipping stage and valley-fill stage is no more than original
The a% or peak clipping line of energy-accumulating power station power output electricity or the adjustment amount of valley-fill line are no more than the b% of former peak clipping line or valley-fill line；a
It is positive number with b.
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