CN108711890A - Ahead market goes out clearing method, system, device and computer readable storage medium - Google Patents
Ahead market goes out clearing method, system, device and computer readable storage medium Download PDFInfo
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- CN108711890A CN108711890A CN201810677160.8A CN201810677160A CN108711890A CN 108711890 A CN108711890 A CN 108711890A CN 201810677160 A CN201810677160 A CN 201810677160A CN 108711890 A CN108711890 A CN 108711890A
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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
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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Abstract
This application discloses a kind of ahead markets to go out clearing method,System,Device and computer readable storage medium,By establishing to minimize system operation cost as the object function of target and the constraints constrained including unit operation,It obtains including that the ahead market of object function and constraints goes out clear model,Go out clear model using ahead market and calculates initial Unit Commitment plan,Utilize initial Unit Commitment plan,Security constrained economic dispatch object function and constraints calculate deploying node,Recycle deploying node,Load is declared in the amendment for obtaining more closing to reality customer charge demand,Load generation time ahead market is declared into amendment and goes out clear model,To correct the constraints that ahead market goes out in clear model,It obtains correcting constraints,It can obtain the elastic unit output plan of more closing to reality workload demand and elastic Unit Commitment plan,To avoid the occurrence of the off-capacity that is switched in system operation,The problems such as Line Flow is out-of-limit.
Description
Technical field
The present invention relates to technical field of power dispatching automation, more particularly to a kind of ahead market goes out clearing method, system, dress
It sets and computer readable storage medium.
Background technology
As China's new round power system reform moves forward steadily, China's electricity transaction is walked by the transaction of medium-term and long-term electricity
The electric power spot exchange shorter to the period；Currently, have 8 areas such as south (starting to walk using Guangdong) as first electric power pilot
The construction for opening power spot market is explored.
In China's power spot market Path selection, spot exchange is gradually adapted to for guiding large user and sale of electricity company,
Initial period Demand-side in market only declares electricity needs (MW) without declared value.Demand-side is declared by market operation mechanism
Load determines generation schedule a few days ago and a few days ago deploying node as rigid boundary, with the minimum objective optimization of cost of electricity-generating
(locational marginal price,LMP).However, after ahead market price is announced, Demand-side can be according to recent quotation
Signal dynamics adjust electricity consumption behavior.It is insufficient to demand elasticity consideration in ahead market tissue, it will cause out to settle accounts fruit and system
The mismatch of actual load demand may cause be switched in system operation off-capacity, the problems such as Line Flow is out-of-limit.Especially I
State is currently still in developing stage, and load growth is very fast, trend mode is changeable, some areas obstruction takes place frequently, must be in non-rain a few days ago
Congestion management is carried out sentimentally attachedly, for the reserved adjustment nargin of Real-Time Scheduling.
In order to obtain closer to the generation schedule a few days ago of actual load demand, present applicant proposes a kind of ahead markets to go out clearly
Method.
Invention content
It can in view of this, going out clearing method, system, device and computer the purpose of the present invention is to provide a kind of ahead market
Storage medium is read, the generation schedule a few days ago closer to actual load demand is obtained, avoids the occurrence of and is switched on capacity in system operation not
Enough, the problems such as Line Flow is out-of-limit.Its concrete scheme is as follows：
A kind of ahead market goes out clearing method, including：
Pre-establish the object function to minimize system operation cost as target；
Constraints corresponding with the object function is pre-established, the constraints includes that system power balances about
Beam, system reserve constraint, the constraint of branch effective power flow and unit operation constraint；
Using the constraints and the object function, initial Unit Commitment plan is obtained；
Utilize the initial Unit Commitment plan, the security constrained economic dispatch object function pre-established and the constraint
Condition obtains deploying node；
Using the demand elasticity of the deploying node, the expected price and the user of user, obtains correcting and declare
Load；
It declares load by described to substitute into the system power Constraints of Equilibrium, system reserve constraint and the branch active
In trend constraint, obtain correcting constraints；
Using the amendment constraints and the object function, elastic unit output plan and elastic Unit Commitment are obtained
Plan.
Optionally, the object function is：
In formula, pk,tIndicate unit k in the output of period t, uk,tIndicate the 0-1 variables of unit startup-shutdown state, F () table
Show the Bidding Price Functions for participating in ahead market unit, is contiguous segmentation linear function, NGIndicate unit number and run the period respectively with T
Number, Sk,tIndicate the start-up cost of fired power generating unit；
Wherein, Sk,tMeet：
In formula, SUCkIndicate the single booting expense of unit k.
Optionally, the system power Constraints of Equilibrium is：
The system reserve is constrained to：
The branch effective power flow is constrained to：
The unit operation constrains：
Online unit output bound constraint：
Unit ramping rate constraints：
Minimum continuous available machine time constraint：
Minimum continuous downtime constraint：
In formula, dj,tIndicate user j in the workload demand of declaring of period t, NDIndicate the number of users in participation market,It indicates
The unit output upper limit, r indicate the requirement of system reserve rate, DtIndicate that t period Demand-sides declare total load, i.e. Dt=∑jdj,t, FlTable
Show the active transmission capacity of branch l, Tl,kIndicate the power flow transfer distribution factor of network,R k、When indicating that unit k is adjacent respectively
The section increase and decrease output upper limit,The minimum of unit k continuous available machine time, minimum continuous downtime are indicated respectively.
Optionally, the deploying node is：
In formula, LMPk,tIndicate node k in the deploying node of t periods, λtIndicate t period system loading Constraints of Equilibrium
Lagrange multiplier,Indicate the Lagrange multiplier of circuit l maximum forward trend constraints,Indicate that circuit l is maximum anti-
To the Lagrange multiplier of trend constraint,Indicate the Lagrange multiplier of section s maximum forward trend constraints,It indicates
The Lagrange multiplier of section s maximum reverse trend constraints.
Optionally, the demand elasticity using the deploying node, the expected price and the user of user, obtains
The process of load is declared to amendment, including：
Using declaring loading elasticity correction formula, the deploying node, the expected price of user and the user
Demand elasticity obtains the amendment and declares load；
Wherein, the loading elasticity correction formula of declaring is：
In formula, εtFor the user period t demand elasticity,Indicate expected price of the user to operation period day t,Indicate that user declares workload demand to operation period day t,
Optionally, further include：
What foundation guarantee acceptance of the bid unit was preferentially switched on penalizes item to the object function；
Using the amendment constraints, the object function and it is described penalize item, obtain final elastic unit output plan
With final elastic Unit Commitment plan.
Optionally, described to penalize the item to be：
In formula, M >=max SUCk, M is the positive number sufficiently large relative to unit operation and start-up and shut-down costs, 0-1 variables wk,tTable
Show that unit open state goes out to settle accounts the variation of fruit with respect to ahead market in Security Checking.
The invention also discloses a kind of ahead markets to go out clear system, including：
Object function establishes module, for pre-establishing the object function to minimize system operation cost as target；
Constraints establishes module, for pre-establishing constraints corresponding with the object function, the constraint item
Part includes system power Constraints of Equilibrium, system reserve constraint, the constraint of branch effective power flow and unit operation constraint；
Model computation module obtains initial Unit Commitment plan for utilizing the constraints and the object function；
Marginal Pricing computing module, for utilizing the initial Unit Commitment plan, the security constraint economy pre-established
Regulation goal function and the constraints, obtain deploying node；
Load correcting module is declared, the expected price and the user for utilizing the deploying node, user
Demand elasticity obtains correcting and declares load；
Constraints correcting module, for the load of declaring to be substituted into the system power Constraints of Equilibrium, the system
In Reserve Constraint and branch effective power flow constraint, obtain correcting constraints；
Correction model computing module obtains elastic unit for utilizing the amendment constraints and the object function
It contributes and plans and elastic Unit Commitment plan.
The invention also discloses a kind of ahead markets to go out clear device, including：
Memory goes out clear program for storing ahead market；
Processor goes out clear program to realize that ahead market as the aforementioned goes out clearing method for executing the ahead market.
The invention also discloses a kind of computer readable storage medium, day is stored on the computer readable storage medium
Preceding market clearing program, the ahead market, which goes out, to be realized when clear program is executed by processor as aforementioned ahead market goes out clearing method
Step.
In the present invention, a kind of ahead market goes out clearing method, including：It pre-establishes to minimize system operation cost as target
Object function；Constraints corresponding with object function is pre-established, constraints includes system power Constraints of Equilibrium, system
Reserve Constraint, the constraint of branch effective power flow and unit operation constraint；Using constraints and object function, obtains initial unit and open
Stop planning；Using initial Unit Commitment plan, the security constrained economic dispatch object function pre-established and constraints, obtain
Deploying node；Using the demand elasticity of deploying node, the expected price of user and user, obtain correcting declare it is negative
Lotus；Load will be declared to substitute into system power Constraints of Equilibrium, system reserve constraint and the constraint of branch effective power flow, obtain correcting about
Beam condition；Using constraints and object function is corrected, elastic unit output plan and elastic Unit Commitment plan are obtained.
The present invention is by establishing to minimize system operation cost as the object function of target and including system power balance
The constraints of constraint, system reserve constraint, the constraint of branch effective power flow and unit operation constraint, obtain include object function with
The ahead market of constraints goes out clear model, and going out clear model using ahead market calculates initial Unit Commitment plan, using first
Beginning Unit Commitment plan, security constrained economic dispatch object function and constraints calculate deploying node, recycle section
Point Marginal Pricing, the expected price of user and the demand elasticity of user, obtain the amendment of more closing to reality customer charge demand
Load is declared, load generation time ahead market is declared in amendment goes out clear model, to correct the constraint that ahead market goes out in clear model
Condition obtains correcting constraints, enables ahead market go out clear model more closing to reality workload demand, and then utilize object function
With amendment constraints, elastic unit output plan and elastic Unit Commitment plan can be obtained, to avoid the occurrence of system fortune
It is switched in row off-capacity, the problems such as Line Flow is out-of-limit.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is that a kind of ahead market disclosed by the embodiments of the present invention goes out clearing method flow diagram；
Fig. 2 is that another ahead market disclosed by the embodiments of the present invention goes out clearing method flow diagram；
Fig. 3 is that a kind of ahead market disclosed by the embodiments of the present invention goes out clear system structure diagram.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a kind of ahead markets to go out clearing method, shown in Figure 1, and this method includes：
S1：Pre-establish the object function to minimize system operation cost as target；
S2：Constraints corresponding with object function is pre-established, constraints includes system power Constraints of Equilibrium, system
Reserve Constraint, the constraint of branch effective power flow and unit operation constraint.
Specifically, obtaining basic data in advance, technical data includes system data：Period information, system loading and system
Spare requirement；Unit data：At the beginning of unit essential information, unit calculating parameter, unit starting quotation, the quotation of unit energy, unit
Beginning state, the constraint of unit electric power and unit creep speed etc.；Tie line plan data：Interconnection essential information and tie line plan
Power；Load data：Load electric power demand declaration data；Sensitivity data：Unit, load injecting power are to circuit and section tide
Distribution factor is shifted in the power generation of stream；Object function and constraints are established using basic data, formation includes object function peace treaty
The ahead market of beam condition goes out clear model, and it is the security constraint Unit Combination mould for not considering demand elasticity that ahead market, which goes out clear model,
Type is mixed integer linear programming model.
S3：Initial Unit Commitment plan is obtained using constraints and object function.
Specifically, after establishing object function and constraints using basic data, input goes out clear model in ahead market and makees
For the basic data of constant, the initial Unit Commitment plan that ahead market goes out in clear model is calculated.
S4：Using initial Unit Commitment plan, the security constrained economic dispatch object function pre-established and constraints,
Obtain deploying node.
Specifically, using calculated initial Unit Commitment plan, security constrained economic dispatch object function peace treaty is substituted into
Beam condition solves security constrained economic dispatch object function and constraints, obtains deploying node.
Wherein, security constrained economic dispatch object function is：
In formula, pk,tIndicate unit k in the output of period t, uk,tIndicate the 0-1 variables of unit startup-shutdown state, F () table
Show the Bidding Price Functions for participating in ahead market unit, is contiguous segmentation linear function, NGIndicate unit number and run the period respectively with T
Number.
Wherein, initial unit output plan and initial Unit Commitment plan respectively include unit it is each within the unit interval when
Between section unit output pk,tWith unit startup-shutdown state uk,t, the unit interval can be day.
S5：Using the demand elasticity of deploying node, the expected price of user and user, obtains correcting and declare load.
Specifically, before daily market reopens after a cessation of business, user can issue pre- according to historical data, weather conditions, scheduling institution
Measurement information and operation data etc. carry out next day Research on electricity price prediction, shown in Figure 2, and the extended line of point E and point F are user demand curve
f-1(d), enable user to run period day t expected price beThen it corresponds to the workload demand of declaring of the period and is
As shown in the E of the midpoints Fig. 2, user is thought at this time directly will go out a few days ago clear deploying node as the expection to Spot Price,
Think
After the publication of ahead market price, user can update oneself and is expected to real time price, and can adjust power load and extremely need to
Point corresponding with real-time expected price on curve is sought, therefore, each user demand elasticity is calculated by historical data, according to demand bullet
Property data are modified to declaring load to obtain the true electricity consumption wish of user.
Specifically, the own elasticity of electricity needs can reflect the response that user makes price expectancy deviation, own elasticity
Meaning is the deviation that certain period price expectancy generates 1%, the percentage for causing the period workload demand to adjust；Wherein,
Own elasticity is：
In formula, ε indicates that own elasticity, △ d indicate dRT-dDA, △ π expressions πEDA-πDA, d expression loads, π expression prices.
Wherein, the elasticity of electricity needs is not user demand slope of a curve, but user demand curve is in logarithmic coordinates
Under slope, pass through Cobb-Douglas function pair demand curves carry out Local approximation, it is believed that declare load nearby elasticity
Numerical value change is little.
Specifically, establishing price to user using the demand elasticity of deploying node, the expected price of user and user
The correspondence of load declares load, wherein the demand elasticity of user can declare negative by its history to obtain correcting
Lotus, actual load and history are calculated to obtain with Spot Price a few days ago.
S6：Load is declared into amendment and substitutes into system power Constraints of Equilibrium, system reserve constraint and the constraint of branch effective power flow
In, it obtains correcting constraints.
S7：Using constraints and object function is corrected, elastic unit output plan and elastic Unit Commitment plan are obtained.
Specifically, being declared in load substitution constraints by that will correct, it is flat that more precisely system power can be obtained
Weighing apparatus constraint, system reserve constraint and the constraint of road effective power flow, obtain revised amendment constraints, and then utilize and correct constraint
Condition and object function can be considered the elastic unit output plan of demand elasticity and elastic Unit Commitment plan a few days ago,
To obtain the generation schedule a few days ago closer to actual load demand, be switched in system operation off-capacity, circuit are avoided the occurrence of
The problems such as trend is out-of-limit.
It should be noted that the unit output p for passing through each period that obtains unit within the unit intervalk,tIt is opened with unit
Shutdown status uk,t, the unit interval can be day, can obtain elastic unit output plan and elastic Unit Commitment plan, i.e. bullet
Property unit output plan and elastic Unit Commitment plan each period that respectively includes unit within the unit interval unit output
pk,tWith unit startup-shutdown state uk,t。
As it can be seen that the embodiment of the present invention is established to minimize system operation cost as the object function of target and including system work(
The constraints that rate Constraints of Equilibrium, system reserve constraint, the constraint of branch effective power flow and unit operation constrain, obtains including target
Function and the ahead market of constraints go out clear model, and going out clear model using ahead market calculates initial Unit Commitment plan,
Deploying node is calculated using initial Unit Commitment plan, security constrained economic dispatch object function and constraints, then
Using the demand elasticity of deploying node, the expected price of user and user, more closing to reality customer charge demand is obtained
Amendment declare load, by amendment declare load generation return ahead market go out clear model, go out in clear model to correct ahead market
Constraints, obtain correcting constraints, ahead market enabled to go out clear model more closing to reality workload demand, and then utilize mesh
Scalar functions and amendment constraints, can obtain elastic unit output plan and elastic Unit Commitment plan, to avoid the occurrence of
It is switched in system operation off-capacity, the problems such as Line Flow is out-of-limit.
The embodiment of the invention discloses a kind of specific ahead markets to go out clearing method, relative to a upper embodiment, this implementation
Example has made further instruction and optimization to technical solution.Specifically：
Specifically, above-mentioned object function is：
In formula, Sk,tIndicate the start-up cost of fired power generating unit；
Wherein, Sk,tMeet：
In formula, SUCkIndicate the single booting expense of unit k.
Specifically, above-mentioned constraints, can be embodied as：
System power Constraints of Equilibrium is：
System reserve is constrained to：
Branch effective power flow is constrained to：
Unit operation constrains：
Online unit output bound constraint：
Unit ramping rate constraints：
Minimum continuous available machine time constraint：
Minimum continuous downtime constraint：
In formula, dj,tIndicate user j in the workload demand of declaring of period t, NDIndicate the number of users in participation market,It indicates
The unit output upper limit, r indicate the requirement of system reserve rate, DtIndicate that t period Demand-sides declare total load, i.e. Dt=∑jdj,t, FlTable
Show the active transmission capacity of branch l, Tl,kIndicate the power flow transfer distribution factor of network,R k、When indicating that unit k is adjacent respectively
The section increase and decrease output upper limit,The minimum of unit k continuous available machine time, minimum continuous downtime are indicated respectively.
Above-mentioned deploying node is：
In formula, LMPk,tIndicate node k in the deploying node of t periods, λtIndicate t period system loading Constraints of Equilibrium
Lagrange multiplier,Indicate the Lagrange multiplier of circuit l maximum forward trend constraints,Indicate that circuit l is maximum
The Lagrange multiplier of reversal tidal current constraint,Indicate the Lagrange multiplier of section s maximum forward trend constraints,Table
Show the Lagrange multiplier of section s maximum reverse trend constraints.
Specifically, the demand elasticity of above-mentioned deploying node, the expected price of user and user, obtain correcting declare it is negative
The process of lotus, including：
Using the demand elasticity for declaring loading elasticity correction formula, deploying node, the expected price of user and user,
It obtains correcting and declares load；
Wherein, declaring loading elasticity correction formula is：
In formula, εtFor the user period t demand elasticity,Indicate expected price of the user to operation period day t,Indicate that user declares workload demand to operation period day t,
In addition, the embodiment of the invention also discloses a kind of ahead markets to go out clearing method, it is shown in Figure 2, specifically：
The embodiment of the present invention is that further ensure generates electricity on the basis of the ahead market of aforementioned S1 to S7 goes out clearing method
Unit interests are not suffered a loss, it is ensured that target unit is preferentially switched in ahead market in generation schedule, and object function is penalized in increase
.
S21：What foundation guarantee acceptance of the bid unit was preferentially switched on penalizes item to object function；
S22：Using correcting constraints, object function and penalizing item, final elastic unit output plan and final bullet are obtained
Property Unit Commitment plan.
Wherein, the item is penalized to be：
In formula, M >=max SUCk, M is the positive number sufficiently large relative to unit operation and start-up and shut-down costs, 0-1 variables wk,tTable
Show that unit open state goes out to settle accounts the variation of fruit with respect to ahead market in Security Checking.
Pass through the amendment to object function, it is ensured that ahead market acceptance of the bid unit is preferentially switched on.It is difficult or damp when there is peak regulation
Flow unreasonable when having to make ahead market acceptance of the bid unit shutdown, model will minimize the unit unused time to reduce machine as far as possible
The clearing loss of group.And when Security Checking needs to increase unit or extend unit line duration, penalize item not in formula (13)
It works, Security Checking model is using the cost that runs minimized as objective decision generation schedule a few days ago.
Correspondingly, the embodiment of the invention also discloses a kind of ahead markets to go out clear system, shown in Figure 3, the system packet
It includes：
Object function establishes module 1, for pre-establishing the object function to minimize system operation cost as target；
Constraints establishes module 2, and for pre-establishing constraints corresponding with object function, constraints includes being
Uniting, power-balance constraint, system reserve constrain, the constraint of branch effective power flow and unit operation constrain；
Model computation module 3 obtains initial Unit Commitment plan for utilizing constraints and object function；
Marginal Pricing computing module 4, for utilizing initial Unit Commitment plan, the security constrained economic dispatch pre-established
Object function and constraints, obtain deploying node；
Load correcting module 5 is declared, for the demand bullet using deploying node, the expected price of user and user
Property, it obtains correcting and declares load；
Constraints correcting module 6 substitutes into system power Constraints of Equilibrium, system reserve constraint and branch for that will declare load
In the effective power flow constraint of road, obtain correcting constraints；
Correction model computing module 7, for using constraints and object function is corrected, obtaining elastic unit output plan
With elastic Unit Commitment plan.
As it can be seen that the embodiment of the present invention is established to minimize system operation cost as the object function of target and including system work(
The constraints that rate Constraints of Equilibrium, system reserve constraint, the constraint of branch effective power flow and unit operation constrain, obtains including target
Function and the ahead market of constraints go out clear model, and going out clear model using ahead market calculates initial Unit Commitment plan,
Deploying node is calculated using initial Unit Commitment plan, security constrained economic dispatch object function and constraints, then
Using the demand elasticity of deploying node, the expected price of user and user, more closing to reality customer charge demand is obtained
Amendment declare load, by amendment declare load generation return ahead market go out clear model, go out in clear model to correct ahead market
Constraints, obtain correcting constraints, ahead market enabled to go out clear model more closing to reality workload demand, and then utilize mesh
Scalar functions and amendment constraints, can obtain elastic unit output plan and elastic Unit Commitment plan, to avoid the occurrence of
It is switched in system operation off-capacity, the problems such as Line Flow is out-of-limit.
Wherein, above-mentioned object function is：
In formula, pk,tIndicate unit k in the output of period t, uk,tIndicate the 0-1 variables of unit startup-shutdown state, F () table
Show the Bidding Price Functions for participating in ahead market unit, is contiguous segmentation linear function, NGIndicate unit number and run the period respectively with T
Number, SK, tIndicate the start-up cost of fired power generating unit；
Wherein, Sk,tMeet：
In formula, SUCkIndicate the single booting expense of unit k.
Wherein, each constrain in above-mentioned constraints can be specially：
System power Constraints of Equilibrium is：
System reserve is constrained to：
Branch effective power flow is constrained to：
Unit operation constrains：
Online unit output bound constraint：
Unit ramping rate constraints：
Minimum continuous available machine time constraint：
Minimum continuous downtime constraint：
In formula, dj,tIndicate user j in the workload demand of declaring of period t, NDIndicate the number of users in participation market,It indicates
The unit output upper limit, r indicate the requirement of system reserve rate, DtIndicate that t period Demand-sides declare total load, i.e. Dt=∑jdj,t, FlTable
Show the active transmission capacity of branch l, Tl,kIndicate the power flow transfer distribution factor of network,R k、When indicating that unit k is adjacent respectively
The section increase and decrease output upper limit,The minimum of unit k continuous available machine time, minimum continuous downtime are indicated respectively.
Wherein, above-mentioned deploying node is：
In formula, λtIndicate the Lagrange multiplier of t period system loading Constraints of Equilibrium,Indicate circuit l maximum forward tides
The Lagrange multiplier of constraint is flowed,Indicate the Lagrange multiplier of circuit l maximum reverse trend constraints,Indicate section
The Lagrange multiplier of s maximum forward trend constraints,Indicate the Lagrange multiplier of section s maximum reverse trend constraints.
Specifically, above-mentioned constraints correcting module 6, can be specifically used for utilizing and declare loading elasticity correction formula, section
Point Marginal Pricing, the expected price of user and the demand elasticity of user obtain correcting and declare load；
Wherein, declaring loading elasticity correction formula is：
In formula, εtFor the user period t demand elasticity,Indicate expected price of the user to operation period day t,Indicate that user declares workload demand to operation period day t,
The embodiment of the present invention can also include that item is penalized to establish module and correction model computing module；Wherein,
Penalize item to establish module, for establish ensure acceptance of the bid unit be preferentially switched on item is penalized to object function；
Correction model computing module, for using correcting constraints, object function and penalizing item, obtaining final elastic unit
It contributes and plans and final elastic Unit Commitment plan.
The item is penalized to be specifically, above-mentioned：
In formula, M >=max SUCkFor the positive number sufficiently large relative to unit operation and start-up and shut-down costs, 0-1 variables wk,tIt indicates
Unit open state goes out to settle accounts the variation of fruit with respect to ahead market in Security Checking.
In addition, the embodiment of the invention also discloses a kind of ahead markets to go out clear device, including：
Memory goes out clear program for storing ahead market；
Processor, for market clearing program before the execution day to realize that ahead market as the aforementioned goes out clearing method.
Going out the specific steps of clearing method about ahead market above-mentioned can refer in corresponding disclosed in previous embodiment
Hold, is no longer repeated herein.
The embodiment of the invention also discloses a kind of computer readable storage medium, it is stored on computer readable storage medium
Ahead market goes out clear program, and ahead market, which goes out, realizes that aforementioned ahead market such as goes out the step of clearing method when clear program is executed by processor
Suddenly.
Going out the specific steps of clearing method about ahead market above-mentioned can refer in corresponding disclosed in previous embodiment
Hold, is no longer repeated herein.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only that
A little elements, but also include other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, depends on the specific application and design constraint of technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Clearing method, system, device and computer-readable storage medium are gone out to a kind of ahead market provided by the present invention above
Matter is described in detail, and principle and implementation of the present invention are described for specific case used herein, above
The explanation of embodiment is merely used to help understand the method and its core concept of the present invention；Meanwhile for the general skill of this field
Art personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this
Description should not be construed as limiting the invention.
Claims (10)
1. a kind of ahead market goes out clearing method, which is characterized in that including：
Pre-establish the object function to minimize system operation cost as target；
Constraints corresponding with the object function is pre-established, the constraints includes system power Constraints of Equilibrium, is
System Reserve Constraint, the constraint of branch effective power flow and unit operation constraint；
Using the constraints and the object function, initial Unit Commitment plan is obtained；
Utilize the initial Unit Commitment plan, the security constrained economic dispatch object function pre-established and the constraint item
Part obtains deploying node；
Using the demand elasticity of the deploying node, the expected price and the user of user, obtains correcting and declare load；
The load of declaring is substituted into the system power Constraints of Equilibrium, system reserve constraint and the branch effective power flow
In constraint, obtain correcting constraints；
Using the amendment constraints and the object function, elastic unit output plan and elastic Unit Commitment meter are obtained
It draws.
2. ahead market according to claim 1 goes out clearing method, which is characterized in that the object function is：
In formula, pk,tIndicate unit k in the output of period t, uk,tIndicate that the 0-1 variables of unit startup-shutdown state, F () indicate ginseng
It is contiguous segmentation linear function, N with the Bidding Price Functions of ahead market unitGIndicate unit number and run the period number respectively with T,
Sk,tIndicate the start-up cost of fired power generating unit；
Wherein, Sk,tMeet：
In formula, SUCkIndicate the single booting expense of unit k.
3. ahead market according to claim 1 goes out clearing method, which is characterized in that the system power Constraints of Equilibrium is：
The system reserve is constrained to：
The branch effective power flow is constrained to：
The unit operation constrains：
Online unit output bound constraint：
Unit ramping rate constraints：
Minimum continuous available machine time constraint：
Minimum continuous downtime constraint：
In formula, dj,tIndicate user j in the workload demand of declaring of period t, NDIndicate the number of users in participation market,Indicate unit
The output upper limit, r indicate the requirement of system reserve rate, DtIndicate that t period Demand-sides declare total load, i.e. Dt=∑jdj,t, FlIndicate branch
The active transmission capacity of road l, Tl,kIndicate the power flow transfer distribution factor of network,R k、Indicate that unit k adjacent time intervals increase respectively
Subtract the output upper limit,The minimum of unit k continuous available machine time, minimum continuous downtime are indicated respectively.
4. ahead market according to claim 1 goes out clearing method, which is characterized in that the deploying node is：
In formula, LMPk,tIndicate node k in the deploying node of t periods, λtIndicate the glug of t period system loading Constraints of Equilibrium
Bright day multiplier,Indicate the Lagrange multiplier of circuit l maximum forward trend constraints,Indicate circuit l maximum reverse trends
The Lagrange multiplier of constraint,Indicate the Lagrange multiplier of section s maximum forward trend constraints,Indicate section s most
The Lagrange multiplier of big reversal tidal current constraint.
5. ahead market according to claim 1 goes out clearing method, which is characterized in that described to utilize node limit electricity
Valence, user expected price and the user demand elasticity, obtain correcting the process of load of declaring, including：
Using declare loading elasticity correction formula, the deploying node, user expected price and the user demand
Elasticity obtains the amendment and declares load；
Wherein, the loading elasticity correction formula of declaring is：
In formula, εtFor the user period t demand elasticity,Indicate expected price of the user to operation period day t,Table
Show that user declares workload demand to operation period day t,
6. ahead market according to any one of claims 1 to 5 goes out clearing method, which is characterized in that further include：
What foundation guarantee acceptance of the bid unit was preferentially switched on penalizes item to the object function；
Using the amendment constraints, the object function and it is described penalize item, obtain final elastic unit output plan and most
Elasticity Unit Commitment plan eventually.
7. ahead market according to claim 6 goes out clearing method, which is characterized in that described to penalize the item to be：
In formula, M >=maxSUCk, M is the positive number sufficiently large relative to unit operation and start-up and shut-down costs, 0-1 variables wk,tIndicate safety
Unit open state goes out to settle accounts the variation of fruit with respect to ahead market in check.
8. a kind of ahead market goes out clear system, which is characterized in that including：
Object function establishes module, for pre-establishing the object function to minimize system operation cost as target；
Constraints establishes module, for pre-establishing constraints corresponding with the object function, the constraints packet
Include system power Constraints of Equilibrium, system reserve constraint, the constraint of branch effective power flow and unit operation constraint；
Model computation module obtains initial Unit Commitment plan for utilizing the constraints and the object function；
Marginal Pricing computing module, for utilizing the initial Unit Commitment plan, the security constrained economic dispatch pre-established
Object function and the constraints, obtain deploying node；
Load correcting module is declared, the demand for expected price and the user using the deploying node, user
Elasticity obtains correcting and declares load；
Constraints correcting module, for the load of declaring to be substituted into the system power Constraints of Equilibrium, the system reserve
In constraint and branch effective power flow constraint, obtain correcting constraints；
Correction model computing module obtains elastic unit output for utilizing the amendment constraints and the object function
Plan and elastic Unit Commitment plan.
9. a kind of ahead market goes out clear device, which is characterized in that including：
Memory goes out clear program for storing ahead market；
Processor goes out clear program to realize city a few days ago as described in any one of claim 1 to 7 for executing the ahead market
Field goes out clearing method.
10. a kind of computer readable storage medium, which is characterized in that be stored with city a few days ago on the computer readable storage medium
Field goes out clear program, and the ahead market goes out to be realized as described in any one of claim 1 to 7 a few days ago when clear program is executed by processor
The step of market clearing method.
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