CN110400096A - A kind of thermoelectricity merges the optimization method of generation schedule a few days ago and system of electric energy storage combined adjusting peak - Google Patents
A kind of thermoelectricity merges the optimization method of generation schedule a few days ago and system of electric energy storage combined adjusting peak Download PDFInfo
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Abstract
The present invention discloses a kind of generation schedule optimization method a few days ago of electric energy storage combined adjusting peak of thermoelectricity fusion, it comprises the following processes: step S1, obtaining the relevant parameter information of fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage, the parameters information in conjunction with needed for generation schedule a few days ago generates the calculating scene of generation schedule a few days ago that thermoelectricity merges electric energy storage combined adjusting peak；Step S2, according to the parameter information in S1, the generation schedule Optimized model a few days ago that thermoelectricity merges electric energy storage combined adjusting peak is generated；Step S3, the Optimized model of generation schedule a few days ago for merging electric energy storage combined adjusting peak to the thermoelectricity generated in S2 optimizes calculating and Security Checking, obtains generation schedule, peak regulation assisted hatching cleaing price a few days ago.The present invention can be in conjunction with next day grid operation mode, and in the case where sufficiently assessment next day new energy digestion capability and system loading peak regulation demand, implementation rate is planned in promotion a few days ago, promotes new energy consumption, and the bulk power grid for meeting increasingly lean is safely operated demand.
Description
Technical field
The invention belongs to dispatching automation of electric power systems technical fields, and in particular to a kind of electric energy storage joint tune of thermoelectricity fusion
The optimization method of generation schedule a few days ago and system at peak.
Background technique
Currently, the main reason for causing domestic peak load regulation network pressure to increasingly sharpen includes thermoelectricity installation accounting height, peak regulation money
The factors such as source is in short supply, new energy large-scale grid connection, load peak-valley difference are gradually increased, wherein main cause be peak load regulation network resource without
Method meets the safe operation requirement of extensive new-energy grid-connected, and abandonment is caused to abandon light, abandonment during " three northern areas of China " heat supply in winter
It is especially prominent to abandon optical issue.
For the urgent pressure for alleviating domestic peak load regulation network, promote new energy consumption, domestic experts and scholars are to gas fuel machine
Draw water peak regulation, nuclear power unit peak regulation etc. of group rapid starting/stopping peak regulation, hydroenergy storage station has done numerous studies, alleviates to a certain extent
Domestic peak regulation pressure.However, since above-mentioned peak regulation resource is limited, peak regulation effect is not very obvious, to significantly promote adjusting
Resource needs that fired power generating unit is encouraged to participate in peak regulation.To improve the enthusiasm that fired power generating unit participates in peak regulation, domestic scholars are auxiliary to peak regulation
Service market mechanism is helped to do numerous studies, " three northern areas of China " successively establish power peak regulation assisted hatching, using economy
Lever and market means transfer the enthusiasm of fired power generating unit enterprise peak regulation.It is opposite in peak regulation assisted hatching transaction operating mechanism
After improving, part thermal power plant is to increase peak modulation capacity and peak regulation flexibility, builds electric energy storage and participates in market peak regulation, forms thermoelectricity and melt
The operational mode for closing electric energy storage combined adjusting peak, improves the digestion capability of clean energy resource, alleviates peak load regulation network pressure, it is ensured that power grid peace
Full stable operation.
With the fast development of various regions peak regulation assisted hatching, the generation schedule of " three public scheduling " mode has been gradually formed
The peak regulation assisted hatching of establishment and " market mode " goes out the scheduling method of clear coordinated operation.Peak regulation assisted hatching is clear out
According to being that peak load regulation is offered and peak-load regulating demand, the size of peak regulation demand is pre- according to network topology, load prediction, new energy
The variation of survey adjusts in real time, can not precisely estimate in advance, in addition, peak regulation market clearing need to take into account its influence to power grid security,
It has therefore been proposed to working out with peak regulation assisted hatching combined adjusting peak is the optimal mode for adapting to the public management and running in the country three clearly out,
The optimization method of generation schedule a few days ago that the thermoelectricity to match therewith merges electric energy storage combined adjusting peak is core of the invention content.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of thermoelectricity is provided and merges electric energy storage combined adjusting peak
Generation schedule optimization method and system a few days ago, generation schedule Optimized model basis of the method under existing " three public scheduling " mode
On, fully consider that thermoelectricity in same power plant, electric energy storage uniform pirce participate in the complicated coupling relationship of peak regulation, according to system loading and
New energy prediction case, optimization fired power generating unit power output and electric energy storage charge and discharge plan, cooperate other energy to meet system electricity consumption need
It asks, alleviates peak load regulation network pressure, realize that new energy maximum is received.
To solve prior art problem, the invention discloses the power generation meters a few days ago that a kind of thermoelectricity merges electric energy storage combined adjusting peak
Optimization method is drawn, is comprised the following processes:
Step S1, the relevant parameter information for obtaining fired power generating unit depth peak regulation and the electric two-way peak regulation of energy storage, in conjunction with sending out a few days ago
Parameters information needed for electricity plan, the generation schedule a few days ago for generating the electric energy storage combined adjusting peak of thermoelectricity fusion calculate scene；
Step S2, based on the calculating scene of generation schedule a few days ago in step S1, in existing generating plan model a few days ago
On the basis of, fired power generating unit depth peak regulation and the two-way peak regulation related constraint of electric energy storage are introduced, the electric energy storage joint of thermoelectricity fusion is generated and adjusts
The generation schedule Optimized model a few days ago at peak；
Step S3, the Optimized model of generation schedule a few days ago for merging electric energy storage combined adjusting peak to the thermoelectricity generated in S2 carries out excellent
Change calculating and Security Checking, obtains generation schedule, peak regulation assisted hatching cleaing price a few days ago.
Further,
The relevant parameter information of the fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage includes peak regulation of power plant segmentation report
Valence, unit depth peak regulation lower limit, thermoelectricity minimum-depth peak regulation time, the two-way peak regulation power interval of electric energy storage, the two-way tune of electric energy storage
Save rate.
Further,
Parameters information needed for the generation schedule a few days ago includes system loading prediction a few days ago, new energy is pre- a few days ago
Survey, a few days ago maintenance plan, cross-section limitation, compressor emergency shutdown information, tie line plan, unit is adjustable power output, Unit Economic parameter letter
Breath and unit are to monitoring element sensitivity information.
Further,
The monitoring element refers to the various kinds of equipment in power grid, and the sensitivity information is to obtain newest power grid physical model
With next day running mode data, it is calculated using PQ decoupling method.
Further,
S2 includes: the fired power generating unit depth peak regulation using generation schedule Optimized model is prototype a few days ago under " three public scheduling " mode
It include the active lower limit constraint of unit depth peak regulation, minimum-depth peak regulation time-constrain, most with the two-way peak regulation related constraint of electric energy storage
Small non-depth peak regulation time-constrain, the constraint of electric energy storage storage volume, electric energy storage charge-discharge velocity constraint, electric energy storage charge and discharge at
Originally, electric energy storage charge and discharge count constraint generates the day that thermoelectricity merges electric energy storage combined adjusting peak according to the parameter information obtained in S1
The optimization aim of preceding generation schedule Optimized model, the Optimized model introduces peak regulation cost.
Further,
In S2, the expression formula that thermoelectricity merges the Optimized model of generation schedule a few days ago of electric energy storage combined adjusting peak is as follows:
In formula: FoFor the optimization routine target of generation schedule, N are power plant's sum a few days ago under " three public scheduling " mode, T is excellent
Change period times number, Δn,tFor power plant N period t peak regulation cost.
Further,
The expression formula of power plant's power output is as follows:
In formula: pn,tIndicate power plant n period t active power, n=1,2,3 ... N, N are power plant's sum；pi,tFor the unit i period
T active power；ξb,tIndicate that electric energy storage b period t charge and discharge plan, charging are negative, electric discharge is positive, and does not fill that not put be zero；SnIt indicates
Fired power generating unit and electric energy storage set in power plant n；
The expression formula of peak regulation of power plant depth constraints is as follows:
In formula:Power plant n period t peak regulation depth；pn,tIndicate power plant n period t active power；
The expression formula for being segmented peak regulation quotation constraint is as follows:
In formula: pn,l,tThe peak regulation depth of quotation section l is segmented in peak regulation for power plant n period t；Indicate the power plant n period
T is segmented the right endpoint of quotation section l in peak regulation；Indicate that power plant n period t is segmented the left end point of quotation section l in peak regulation；
SlIndicate peak regulation of power plant segmentation quotation section set；
The expression formula of single power plant depth peak regulation cost is as follows:
In formula: γn,l,tThe quotation of quotation section l is segmented in peak regulation for power plant n period t；
The expression formula of electric energy storage storage volume constraint is as follows:
sb,min≤sb,t≤sb,max；
In formula: sb,tFor the state-of-charge of the electric energy storage of electric energy storage b period t；sb,minFor electric energy storage b electric energy storage it is charged
State minimum value；sb,maxFor the state-of-charge maximum value of the electric energy storage of electric energy storage b；When the state-of-charge of electric energy storage reaches maximum value
When, stop charging；Stop electric discharge when the state-of-charge of electric energy storage reaches minimum value；
The expression formula of electric energy storage charge-discharge velocity constraint is as follows:
In formula: αb,tFor 0/1 variable, αb,t=1 expression electricity energy storage b period t is in charged state, αb,t=0 indicates electric energy storage
B period t is not at charged state；βb,tFor 0/1 variable, βb,t=1 expression electricity energy storage b period t is in discharge condition, βb,t=0 table
Show that electric energy storage b period t is not at discharge condition；
Electric energy storage charge and discharge cost, the expression formula of electric energy storage charge and discharge count constraint are as follows:
In formula: Nb,cAnd Nb,dElectric energy storage b maximum charge and discharge number is respectively indicated, is constant value, can set according to the actual situation
It sets；
The expression formula of fired power generating unit minimum technology units limits is as follows:
In formula: pi,tFor unit i period t active power；Indicate the depth peak regulation active power of fired power generating unit i period t；
The expression formula of fired power generating unit maximum peak regulation depth constraints is as follows:
In formula:Indicate fired power generating unit i depth peak regulation lower limit,Indicate the depth peak regulation of fired power generating unit i period t
Active power, pi,minFor minimum technology power output；
The expression formula of minimum-depth peak regulation time-constrain and minimum non-depth peak regulation time-constrain is as follows:
In formula: ui,t、θi,t、It is 0/1 variable；ui,t=1 expression unit i period t is in depth peak regulation state；ui,t
=0 expression unit i period t is in normal operating condition；θi,t=1 expression unit i period t enters depth peak regulation state；
Indicate that unit i period t exits depth peak regulation state；π indicates the minimum-depth peak regulation time；τ indicates the minimum non-depth peak regulation time.
Further,
The electricity energy storage charge and discharge cost, the equivalence of expression expression formula of electric energy storage charge and discharge count constraint are as follows:
In formula: yb,t、zb,t、hb,t、kb,tIt is 0/1 variable, yb,t=1 expression electricity energy storage b period t enters charged state；
zb,t=1 expression electricity energy storage b period t exits charged state；hb,t=1 expression electricity energy storage b period t enters discharge condition；kb,t=1
Indicate that electricity energy storage b period t exits discharge condition.
The invention also discloses the generation schedule optimization systems a few days ago that a kind of thermoelectricity merges electric energy storage combined adjusting peak, comprising:
Module is obtained, for obtaining the relevant parameter information of fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage, in conjunction with
Parameters information needed for generation schedule a few days ago generates the calculating of the generation schedule a few days ago field that thermoelectricity merges electric energy storage combined adjusting peak
Scape；
Modeling module, for being counted in existing power generation a few days ago based on the calculating scene of generation schedule a few days ago in step S1
On the basis of drawing model, fired power generating unit depth peak regulation and the two-way peak regulation related constraint of electric energy storage are introduced, thermoelectricity is generated and merges electric energy storage
The generation schedule Optimized model a few days ago of combined adjusting peak；And
Optimization module, the thermoelectricity for generating to the modeling module merge the generation schedule a few days ago of electric energy storage combined adjusting peak
Optimized model optimizes calculating and Security Checking, obtains generation schedule, peak regulation assisted hatching cleaing price a few days ago.
The invention has the benefit that generation schedule Optimized model is basic a few days ago under existing " three public scheduling " mode
On, the relevant parameter of maintenance fired power generating unit depth peak regulation, electric energy storage bidirectional modulation introduces the fired power generating unit depth tune of single machine level
Peak and electric energy storage peak shaving related constraint, fired power generating unit and electric energy storage in power plant's segmentation quotation peak regulation cost of power plant's level, power plant
The constraint such as coupled relation, and existing generating plan model partially restrained condition a few days ago is transformed, it forms thermoelectricity fusion energy storage joint and adjusts
The generation schedule Optimized model a few days ago at peak.This Optimized model can be new in sufficiently assessment next day in conjunction with next day grid operation mode
In the case where energy consumption ability and system loading peak regulation demand, offer curve is segmented according to peak regulation assisted hatching power plant,
Work out it is relatively reliable effectively, peak regulation cost is minimum and the higher fired power generating unit depth peak regulation plan of degree of being practical and electric energy storage meter
It draws, implementation rate is planned in promotion a few days ago, promotes new energy consumption, and the bulk power grid for meeting increasingly lean is safely operated demand.
Detailed description of the invention
Fig. 1 is flow chart of the invention；
Fig. 2 is that power plant's depth peak regulation is segmented offer curve figure.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
The establishment of generation schedule a few days ago under existing " three public scheduling " mode is run according to next day grid operation mode, unit
State, a few days ago load prediction, new energy prediction a few days ago, a few days ago maintenance plan, cross-section limitation and planned a few days ago by electricity, work out next day
Unit output plan.The period interval of generation schedule is 15 minutes a few days ago, and the time range of planning is following 1 to a few days.
Existing generating plan model a few days ago is SCED model, with and the minimum optimization aim of original plan deviation a few days ago, comprehensively considering
System balancing constraint, unit operation constraint, Reserve Constraint, smoothness constraint, abandonment constraint, Network Security Constraints and machine group constraint
Under the conditions of, Optimal Decision-making unit output is horizontal, completes the establishment of generation schedule a few days ago.
Thermoelectricity of the invention merges the generation schedule optimization method a few days ago of electric energy storage combined adjusting peak, in existing " three public scheduling "
On the basis of generating plan model a few days ago under mode, the relevant parameter of maintenance fired power generating unit depth peak regulation, electric energy storage bidirectional modulation,
Introduce the fired power generating unit depth peak regulation and electric energy storage peak shaving related constraint of single machine level, power plant's segmentation quotation peak regulation of power plant's level
The constraint such as fired power generating unit and electric energy storage coupled relation in cost, power plant, and existing generating plan model partially restrained a few days ago is transformed
Condition forms the generation schedule Optimized model a few days ago of thermoelectricity fusion energy storage combined adjusting peak, by the way that this, generation schedule optimizes a few days ago
Model, which calculate, obtains fired power generating unit depth peak regulation and electric energy storage plan；Following steps are specifically included, as illustrated in fig. 1 and 2:
Step S1, thermoelectricity merge electric energy storage combined adjusting peak and calculate scene generation.Thermoelectricity is obtained from peak regulation assisted hatching
The relevant parameter information of unit depth peak regulation and the electric two-way peak regulation of energy storage, relevant parameter information include peak regulation of power plant segmentation quotation,
Unit depth peak regulation lower limit, thermoelectricity minimum-depth peak regulation time, the two-way peak regulation power interval of electric energy storage, electric energy storage bidirectional modulation speed
Rate, comprehensive all kinds of basic datas of generation schedule a few days ago generate the calculating of generation schedule a few days ago that thermoelectricity merges electric energy storage combined adjusting peak
Scene.
All kinds of basic datas of generation schedule include system loading prediction a few days ago, new energy prediction a few days ago, overhaul a few days ago a few days ago
Plan, cross-section limitation, compressor emergency shutdown information, tie line plan, unit is adjustable power output, Unit Economic parameter information and unit
To monitoring element sensitivity information.Wherein sensitivity information is to obtain newest power grid physical model and next day running mode data,
It is calculated using PQ decoupling method, detailed process is referring to the prior art.Monitoring element refers to the various kinds of equipment in power grid, spirit
Sensitivity is the parameter that existing generating plan model a few days ago needs.
Step S2, based on the parameter information data for calculating scene in step S1, in existing " three public scheduling " mode day
On the basis of preceding generation schedule Optimized model, building fired power generating unit depth peak regulation and the two-way peak regulation related constraint of electric energy storage generate fire
The generation schedule Optimized model a few days ago of electro' asion electricity energy storage combined adjusting peak；The optimization aim comparison of the Optimized model is existing to be sent out a few days ago
Electric planning optimization model increases peak regulation cost；Constraint condition increases the active lower limit constraint of unit depth peak regulation, minimum-depth
Peak regulation time-constrain, minimum non-depth peak regulation time-constrain, electric energy storage storage volume constrain, electric energy storage charge-discharge velocity constrains,
Electric energy storage charge and discharge cost, electric energy storage charge and discharge count constraint.
The optimization aim expression formula that thermoelectricity merges the Optimized model of generation schedule a few days ago of electric energy storage combined adjusting peak is as follows:
In formula: FoFor the optimization routine target of generation schedule a few days ago under " three public scheduling " mode；N is power plant's sum；T is excellent
Change period times number；Δn,tFor power plant N period t peak regulation cost.
As shown in Fig. 2, power plant's quotation can also be segmented according to power plant and offer according to single unit segmentation quotation in power plant.
It offers if being segmented according to power plant, the peak regulation cost in optimization aim just needs locating quotation interval computation peak regulation of contributing according to power plant
Cost, power plant's power output are calculated according to unit output, electric energy storage charge-discharge electric power in power plant, and complexity is higher than separate unit machine
Set of segmentation quotation.In addition, the incidence relation between the modeling pattern removal power plant of peak regulation of power plant quotation and unit, then can regard list as
The single machine modeling pattern of platform peak load regulation quotation, so the present invention carries out mathematical modeling in such a way that power plant integrally offers.
Due to existing simultaneously fired power generating unit and electric energy storage in power plant, power plant's power output expression formula is as follows:
In formula: pn,tIndicate power plant n period t active power, n=1,2,3 ... N, N are power plant's sum；pi,tFor the unit i period
T active power；ξb,tIndicate that electric energy storage b period t charge and discharge plan, charging are negative, electric discharge is positive, and does not fill that not put be zero；SnIt indicates
Fired power generating unit and electric energy storage set in power plant n.
Peak regulation of power plant segmentation quotation, quotation section areWherein, l=1,2,3 ... L, first section quotation area
Between left end pointFor power plant's depth peak regulation starting point, therefore, peak regulation of power plant depth constraints be may be expressed as:
In formula:Power plant n period t peak regulation depth；pn,tIndicate power plant n period t active power.
Due to using peak regulation of power plant segmentation quotation, power plant should be calculated in the peak regulation depth in every section of peak regulation quotation section,
Segmentation peak regulation quotation constraint may be expressed as:
In formula: pn,l,tThe peak regulation depth of quotation section l is segmented in peak regulation for power plant n period t；Indicate the power plant n period
T is segmented the right endpoint of quotation section l in peak regulation；Indicate that power plant n period t is segmented the left end point of quotation section l in peak regulation；
SlIndicate peak regulation of power plant segmentation quotation section set.
So far, single power plant's depth peak regulation cost can further indicate that are as follows:
In formula: γn,l,tThe quotation of quotation section l is segmented in peak regulation for power plant n period t.
In conclusion constructing the related constraint of power plant's depth peak regulation, fired power generating unit depth peak regulation is next constructed respectively
With the related constraint of the two-way peak regulation of electric energy storage.
Electric energy storage related constraint is constructed first.To prevent electric energy storage from overcharging the generation with over-discharge, the state-of-charge of electric energy storage
(SOC, State-of-Charge, the i.e. ratio of battery remaining capacity and accumulator capacity) should meet upper limit value and lower limit value constraint；
sb,min≤sb,t≤sb,max；
In formula: sb,tFor the SOC of electric energy storage b period t；sb,minFor the SOC minimum value (desirable 30%) of electric energy storage b；sb,max
For the SOC maximum value (desirable 95%) of electric energy storage b；When SOC reaches maximum value, stop charging；Stop when SOC reaches minimum value
Only discharge.
The situation of change of the SOC of electric energy storage is determined by following formula in unit interval:
In formula: sb,0For electric energy storage b initial SOC value；EbFor electric energy storage b capacity；Number of segment when T is optimizing cycle；λb,tFor electricity
The charge power of energy storage b period t；μb,tFor the discharge power of electric energy storage b period t.
The electric single period charge-discharge electric power size of energy storage will affect service life, therefore single period charge-discharge electric power maximum value one
As be no more than the 20% of electric stored energy capacitance, therefore
In formula: αb,tFor 0/1 variable, αb,t=1 expression electricity energy storage b period t is in charged state, αb,t=0 indicates electric energy storage
B period t is not at charged state；βb,tFor 0/1 variable, βb,t=1 expression electricity energy storage b period t is in discharge condition, βb,t=0 table
Show that electric energy storage b period t is not at discharge condition.
So far, the charge and discharge plan of electric energy storage can further indicate that are as follows:
ξb,t=μb,t-λb,t；
Same electricity energy storage synchronization can be only in a kind of state, so charging and discharging state unique constraints may be expressed as:
αb,tβb,t=0；
Due to αb,tAnd βb,tIt is 0/1 variable, so the following nonlinear restriction of above-mentioned expression formula, can carry out at linearisation
Reason, equivalent constraint expression formula are as follows:
αb,t+βb,t≤1；
Electric energy storage is generally 24 hours and runs, and should not electric energy storage be full or empty after optimizing cycle in cycles
State, it should it is identical with the SOC of day terminating point to meet day initial point:
sb,0=sb,T；
Above formula indicates that electric energy storage energy state returns to original state again after optimizing cycle clearing, next to meet
Optimizing cycle.
Each optimizing cycle needs limit electric energy storage charge and discharge number, as follows:
In formula: Nb,cAnd Nb,dElectric energy storage b maximum charge and discharge number is respectively indicated, is constant value, can set according to the actual situation
It sets.Absolute value is constrained to nonlinear restriction, therefore can obtain its constraint expression formula of equal value by introducing intermediate variable:
In formula: yb,t、zb,t、hb,t、kb,tIt is 0/1 variable, yb,t=1 expression electricity energy storage b period t enters charged state；
zb,t=1 expression electricity energy storage b period t exits charged state；hb,t=1 expression electricity energy storage b period t enters discharge condition；kb,t=1
Indicate that electricity energy storage b period t exits discharge condition.
Next building fired power generating unit depth peak regulation constraint.Since generation schedule optimizes the routine under " three public scheduling " a few days ago
Unit minimax technology units limits are considered in model, when fired power generating unit depth peak regulation, needs to break through minimum technology power output, therefore,
Fired power generating unit minimum technology units limits can be transformed are as follows:
In formula: pi,tFor unit i period t active power；Indicate the depth peak regulation wattful power of fired power generating unit i period t
Rate.
There are lower limit requirements for fired power generating unit depth peak regulation power, therefore, introduce fired power generating unit maximum peak regulation depth constraints:
In formula:Indicate fired power generating unit i depth peak regulation lower limit, minimum technology power output subtracts depth peak regulation lower limit and is
The maximum peak regulation depth of fired power generating unit.
Fired power generating unit depth peak regulation stable operation is influenced by factors, and therefore, fired power generating unit should not frequently be cut and cut out
Depth peaking operation state should meet minimum-depth peak regulation time and minimum non-depth peak regulation time restriction:
In formula: ui,t、θi,t、It is 0/1 variable；ui,t=1 expression unit i period t is in depth peak regulation state；ui,t
=0 expression unit i period t is in normal operating condition；θi,t=1 expression unit i period t enters depth peak regulation state；Indicate that unit i period t exits depth peak regulation state；π indicates the minimum-depth peak regulation time；τ indicates minimum non-depth tune
Peak time.
Thermoelectricity established above merges the generation schedule Optimized model a few days ago of electric energy storage combined adjusting peak, realizes that fired power generating unit is deep
The coordination optimization for spending peak regulation, electric energy storage peak shaving and other energy guarantees the maximum consumption of new energy, meets peak-load regulating demand.
Step S3 is optimized and is pacified to the Optimized model of generation schedule a few days ago that thermoelectricity merges electric energy storage combined adjusting peak
The iterative calculation of whole school's core obtains the power generation meter a few days ago for meeting all kinds of constraint requirements such as power grid security, hair electric equilibrium, unit operation
It draws, peak regulation assisted hatching cleaing price result information.
For considering that thermoelectricity merges the generation schedule Optimized model a few days ago of electric energy storage combined adjusting peak, optimization algorithm with it is existing
The optimization algorithm of generating plan model a few days ago under " three public scheduling " mode be all it is identical, all calculated using branch-and-bound tangent plane
Method；Its Security Checking algorithm be also it is identical as the check algorithm of existing model, check content it is identical.It is specific to calculate and check process
Referring to the prior art, seldom repeat herein.
On the basis of the method for the present invention is the generating plan model a few days ago under existing " three public scheduling " mode, thermal motor is introduced
Group depth peak regulation and electric energy storage peak shaving related constraint.In a sense, being to the primary of conventional model fired power generating unit plan
Amendment, so that revised power output plan more meets the requirement of actual motion, helps to improve the intelligence of power generation dispatching a few days ago
Horizontal and decision-making capability.Meanwhile this method has the characteristics that calculating intensity is low, adaptable, is more suitable for the various rule in China
The scheduling institution of mould promotes and applies.
Technical solution of the present invention is applied in certain provincial power networks, and application effect meets expection.Practical application shows this
Invention can be in conjunction with power grid future operating condition, in abundant assessment system new energy digestion capability and system loading peak regulation demand
In the case of, the higher fired power generating unit power output plan of relatively reliable effective degree of being practical is worked out, unit plan implementation rate is promoted,
Mitigate peak-load regulating pressure, realize the consumption of new energy maximum, the bulk power grid for meeting increasingly lean is safely operated demand.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by those ordinary skilled in the art that: still
It can be with modifications or equivalent substitutions are made to specific embodiments of the invention, and without departing from any of spirit and scope of the invention
Modification or equivalent replacement, should all cover within the scope of the claims of the present invention.
Claims (9)
1. the generation schedule optimization method a few days ago that a kind of thermoelectricity merges electric energy storage combined adjusting peak, it is characterised in that: including following mistake
Journey:
Step S1, the relevant parameter information for obtaining fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage, in conjunction with power generation meter a few days ago
Required parameters information is drawn, the calculating scene of generation schedule a few days ago that thermoelectricity merges electric energy storage combined adjusting peak is generated；
Step S2, based on the calculating scene of generation schedule a few days ago in step S1, on the existing basis of generating plan model a few days ago
On, fired power generating unit depth peak regulation and the two-way peak regulation related constraint of electric energy storage are introduced, thermoelectricity is generated and merges electric energy storage combined adjusting peak
Generation schedule Optimized model a few days ago；
Step S3, calculating and Security Checking are optimized to generating generation schedule Optimized model a few days ago in S2, is generated electricity a few days ago
Plan, peak regulation assisted hatching cleaing price.
2. a kind of thermoelectricity according to claim 1 merges the generation schedule optimization method a few days ago of electric energy storage combined adjusting peak,
It is characterized in that:
The relevant parameter information of the fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage includes peak regulation of power plant segmentation quotation, machine
Group depth peak regulation lower limit, thermoelectricity minimum-depth peak regulation time, the two-way peak regulation power interval of electric energy storage, electric energy storage bidirectional modulation speed
Rate.
3. a kind of thermoelectricity according to claim 1 merges the generation schedule optimization method a few days ago of electric energy storage combined adjusting peak,
It is characterized in that:
Parameters information needed for the generation schedule a few days ago includes system loading prediction a few days ago, new energy prediction a few days ago, day
Preceding maintenance plan, cross-section limitation, compressor emergency shutdown information, tie line plan, unit is adjustable power output, Unit Economic parameter information, with
And unit is to monitoring element sensitivity information.
4. a kind of thermoelectricity according to claim 3 merges the generation schedule optimization method a few days ago of electric energy storage combined adjusting peak,
It is characterized in that:
The monitoring element refers to the various kinds of equipment in power grid, the sensitivity information be obtain newest power grid physical model and time
Day operation mode data, are calculated using PQ decoupling method.
5. a kind of thermoelectricity according to claim 1 merges the generation schedule optimization method a few days ago of electric energy storage combined adjusting peak,
It is characterized in that:
S2 includes: fired power generating unit depth peak regulation and electricity using generation schedule Optimized model is prototype a few days ago under " three public scheduling " mode
The two-way peak regulation related constraint of energy storage includes the active lower limit constraint of unit depth peak regulation, minimum-depth peak regulation time-constrain, minimum non-
Depth peak regulation time-constrain, electric energy storage storage volume constraint, electric energy storage charge-discharge velocity constraint, electric energy storage charge and discharge cost, electricity
Energy storage charge and discharge count constraint is generated thermoelectricity and is merged electric energy storage based on the calculating scene of generation schedule a few days ago in step S1
The optimization aim of the generation schedule Optimized model a few days ago of combined adjusting peak, the Optimized model introduces peak regulation cost.
6. a kind of thermoelectricity according to claim 5 merges the generation schedule optimization method of electric energy storage combined adjusting peak, feature
It is:
In S2, the expression formula that thermoelectricity merges the Optimized model of generation schedule a few days ago of electric energy storage combined adjusting peak is as follows:
In formula: FoFor the optimization routine target of generation schedule, N are power plant's sum a few days ago under " three public scheduling " mode, T is optimization week
The number of segment when phase, Δn,tFor power plant N period t peak regulation cost.
7. a kind of thermoelectricity according to claim 6 merges the generation schedule optimization method of electric energy storage combined adjusting peak, feature
It is:
The expression formula of power plant's power output is as follows:
In formula: pn,tIndicate power plant n period t active power, n=1,2,3 ... N, N are power plant's sum；pi,tHave for unit i period t
Function power；ξb,tIndicate that electric energy storage b period t charge and discharge plan, charging are negative, electric discharge is positive, and does not fill that not put be zero；SnIndicate electricity
Fired power generating unit and electric energy storage set in factory n；
The expression formula of peak regulation of power plant depth constraints is as follows:
In formula:Power plant n period t peak regulation depth；pn,tIndicate power plant n period t active power；
The expression formula for being segmented peak regulation quotation constraint is as follows:
In formula: pn,l,tThe peak regulation depth of quotation section l is segmented in peak regulation for power plant n period t；Indicate that power plant n period t is being adjusted
The right endpoint of peak segmentation quotation section l；Indicate that power plant n period t is segmented the left end point of quotation section l in peak regulation；SlIt indicates
Peak regulation of power plant segmentation quotation section set；
The expression formula of single power plant depth peak regulation cost is as follows:
In formula: γn,l,tThe quotation of quotation section l is segmented in peak regulation for power plant n period t；
The expression formula of electric energy storage storage volume constraint is as follows:
sb,min≤sb,t≤sb,max；
In formula: sb,tFor the state-of-charge of the electric energy storage of electric energy storage b period t；sb,minFor the state-of-charge of the electric energy storage of electric energy storage b
Minimum value；sb,maxFor the state-of-charge maximum value of the electric energy storage of electric energy storage b；When the state-of-charge of electric energy storage reaches maximum value,
Stop charging；Stop electric discharge when the state-of-charge of electric energy storage reaches minimum value；
The expression formula of electric energy storage charge-discharge velocity constraint is as follows:
In formula: αb,tFor 0/1 variable, αb,t=1 expression electricity energy storage b period t is in charged state, αb,tWhen=0 expression electricity energy storage b
Section t is not at charged state；βb,tFor 0/1 variable, βb,t=1 expression electricity energy storage b period t is in discharge condition, βb,t=0 indicates
Electric energy storage b period t is not at discharge condition；
Electric energy storage charge and discharge cost, the expression formula of electric energy storage charge and discharge count constraint are as follows:
In formula: Nb,cAnd Nb,dElectric energy storage b maximum charge and discharge number is respectively indicated, is constant value, can be arranged according to the actual situation；
The expression formula of fired power generating unit minimum technology units limits is as follows:
In formula: pi,tFor unit i period t active power；Indicate the depth peak regulation active power of fired power generating unit i period t；
The expression formula of fired power generating unit maximum peak regulation depth constraints is as follows:
In formula:Indicate fired power generating unit i depth peak regulation lower limit,Indicate the depth peak regulation wattful power of fired power generating unit i period t
Rate, pi,minFor minimum technology power output；
The expression formula of minimum-depth peak regulation time-constrain and minimum non-depth peak regulation time-constrain is as follows:
In formula: ui,t、θi,t、It is 0/1 variable；ui,t=1 expression unit i period t is in depth peak regulation state；ui,t=0 table
Show that unit i period t is in normal operating condition；θi,t=1 expression unit i period t enters depth peak regulation state；Expression machine
Group i period t exits depth peak regulation state；π indicates the minimum-depth peak regulation time；τ indicates the minimum non-depth peak regulation time.
8. a kind of thermoelectricity according to claim 7 merges the generation schedule optimization method of electric energy storage combined adjusting peak, feature
It is:
Electric energy storage charge and discharge cost, the equivalence of expression expression formula of electric energy storage charge and discharge count constraint are as follows:
In formula: yb,t、zb,t、hb,t、kb,tIt is 0/1 variable, yb,t=1 expression electricity energy storage b period t enters charged state；zb,t=1
Indicate that electricity energy storage b period t exits charged state；hb,t=1 expression electricity energy storage b period t enters discharge condition；kb,t=1 indicates electricity
Energy storage b period t exits discharge condition.
9. the generation schedule optimization system a few days ago that a kind of thermoelectricity merges electric energy storage combined adjusting peak, it is characterised in that: include:
Module is obtained, for obtaining the relevant parameter information of fired power generating unit depth peak regulation and the two-way peak regulation of electric energy storage, in conjunction with a few days ago
Parameters information needed for generation schedule generates the calculating scene of generation schedule a few days ago that thermoelectricity merges electric energy storage combined adjusting peak；
Modeling module, for by step S1 generation schedule a few days ago calculate scene based on, in existing generation schedule mould a few days ago
On the basis of type, fired power generating unit depth peak regulation and the two-way peak regulation related constraint of electric energy storage are introduced, thermoelectricity is generated and merges electric energy storage joint
The generation schedule Optimized model a few days ago of peak regulation；And
Optimization module, the thermoelectricity for generating to the modeling module merge the optimization of generation schedule a few days ago of electric energy storage combined adjusting peak
Model optimizes calculating and Security Checking, obtains generation schedule, peak regulation assisted hatching cleaing price a few days ago.
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