CN107784375A - A kind of bilateral electric power contract participates in the coordination optimizing method of balance of electric power and ener a few days ago - Google Patents
A kind of bilateral electric power contract participates in the coordination optimizing method of balance of electric power and ener a few days ago Download PDFInfo
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Abstract
A kind of bilateral electric power contract participates in the coordination optimizing method of balance of electric power and ener a few days ago, including：Three following one day public Contract generations of each power plant are obtained, the bilateral power contract data of power plant or the bilateral power contract data of unit is obtained and determines each power plant's contract curtailments factor；Obtain the following 24 hours prediction data of system loading, the basic parameter and coal consumption characteristic of each fired power generating unit；Optimized model is established according to bilateral electric power contract type, object function is determined and constraints is set, solves mixed integer programming problem；Finally determine startup-shutdown plan and unit output plan and the power plant's reduction of 24 hours futures unit.Unit output is decomposed into bilateral output part, three power parts away on official business and other output parts by technical scheme, establishing proper restraint makes bilateral actual contribute be contributed no more than corresponding contract provision, ensure that the contract adjustment amount in object function is non-negative, reduce and solve difficulty.
Description
Technical field
The present invention relates to electricity market technical field, and in particular to a kind of bilateral electric power contract participates in quantity of electricity a few days ago and put down
The coordination optimizing method of weighing apparatus.
Background technology
The all market electricity of electricity in international representative power market, and it is market electricity and plan to also have many areas and country
Electricity is simultaneously deposited；Unlike PJM (Pennsylvania-New Jersey-Maryland) electricity market, many areas and state
The bilateral contract of family's Initial Stages of Electricity Market be with the physics electricity contract for performing constraint, plan a few days ago arrangement need to consider it is bilateral
The execution of transaction；Unlike developed country balancing, many areas and State Grid market main market players at initial stage markets
Maturity is not high, does not possess increase and decrease output quotation still, it is impossible to offered according to increase and decrease and carry out the adjustment of bilateral transaction.
The difference of bilateral electric power contract and bilateral electricity contract is, the bilateral power curve of electric power contract provision, the song
Line by be bilateral clearing foundation, the curve will influence the curve tendency of unit output, and the shape of unit output curve will influence
The completion rate of bilateral contract.Research focuses primarily upon wholesale competition market, the research particularly quantitative analysis of bilateral transaction at present
The achievement of research is less, and the problems such as the more betting model for concentrating on bilateral transaction, quotation strategy, annual monthly decomposition.Cause
This, proposes that the bilateral electric power contract of power plant and the bilateral electric power contract of unit participate in the coordination optimizing method of balance of electric power and ener a few days ago,
Suitable for the electric power Optimized Operation a few days ago under a variety of electric power contract type, suitable for market electricity and plan electricity and the market mould deposited
Formula, to realize the reference of offering reference that smoothly transits of electricity market.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention proposes that a kind of bilateral electric power contract participates in quantity of electricity a few days ago and put down
The coordination optimizing method of weighing apparatus.
Solution is used by realizing above-mentioned purpose：
A kind of bilateral electric power contract participates in the coordination optimizing method of balance of electric power and ener a few days ago, and the optimization method includes：
(1) three following one day public Contract generations of each power plant are obtained, the bilateral electricity of power plant is obtained according to bilateral contract type
Power contract dataset or the bilateral power contract data of unit simultaneously determine each power plant's contract curtailments factor；
(2) the following 24 hours prediction data of system loading, the basic parameter and coal consumption characteristic of each fired power generating unit are obtained；
(3) if bilateral electric power contract is the bilateral electric power contract of power plant, step (4) is gone to；If bilateral electric power contract
For the bilateral electric power contract of unit, then step (5) is gone to；
(4) the balance of electric power and ener Coordination and Optimization Model a few days ago for considering the bilateral electric power contract of power plant is established, including：Determine mesh
Scalar functions simultaneously set constraints, go to step (6)；
(5) the balance of electric power and ener Coordination and Optimization Model a few days ago for considering the bilateral electric power contract of unit is established, including：Determine mesh
Scalar functions simultaneously set constraints, go to step (6)；
(6) mixed integer programming problem is solved；
(7) startup-shutdown plan and unit output plan and the power plant's reduction of 24 hours futures unit are determined.
Preferably, the step (1) includes：
A, when bilateral contract is power plant's bilateral electric power contract, according to the contracted curve of the bilateral electric power of power plant, statistics electricity
Factory's bilateral contract amount of one day；
B, it is every according to the contracted curve of the bilateral electric power of unit, statistics when bilateral contract is unit bilateral electric power contract
The platform unit bilateral electricity of one day, the bilateral contract amount of all units in a power plant is added, obtains the bilateral of power plant
Contracted quantity.
Preferably, in the step (1), the decay factor includes：Bilateral decay factor and three public decay factors, it is described
Bilateral decay factor is the ratio that power plant's bilateral contract reduction accounts for the total bilateral reduction of system；The three public decay factor is electricity
The deciliter of factory three accounts for the ratio of total three public reduction of system with reduction.
Preferably, in the step (4), optimization aim includes：Minimum contract adjustment amount and minimum cost of electricity-generating；Most
Small chemical combination is higher with adjustment amount priority；
The object function is：
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
Wherein, F is target function value, M1For contract curtailments penalty factor, M2For cost of electricity-generating weight, W1Cut for bilateral contract
Subtract weight, W2For three public contract curtailments weights, Δ S is bilateral contract reduction, and Δ J is the same reduction of three deciliters, and C (P) is to be
System cost of electricity-generating, Pg,0,tProvide to contribute for power plant g periods t bilateral contract, H is the sum in power plant, and N is that fired power generating unit is total
Number, T are that the period is total, Pi,S,tRepresent bilateral output part in unit output, Jg,0For power plant g three public Contract generations, Pi,J,t
Represent three power parts away on official business in unit output, fi,tFor the operating cost of fired power generating unit, SUi,t、SDi,tRespectively fired power generating unit is opened
Machine cost, shut down cost.
Preferably, in the step (4), the constraints includes：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：
Upper and lower spinning reserve constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Power plant g t period bilateral contract output reduction nonnegativity restrictions：
Power plant g three deciliters constrain with reduction：
Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
Pi,t=Pi,S,t+Pi,J,t+Pi,z,t
Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, t-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and minimum
Downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pg,0,tFor power plant g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
Preferably, in the step (5), optimization aim includes：Minimum contract adjustment amount and minimum cost of electricity-generating；Most
Small chemical combination is higher with adjustment amount priority；
The object function is：
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
Wherein, Pi,S_0,tProvide to contribute in period t bilateral contract for unit i.
Preferably, in the step (5), the constraints includes：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：On
Lower rotation Reserve Constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Unit i t period bilateral contract output reduction nonnegativity restrictions：
Pi,S_0,t≥Pi,S,t
Power plant g three deciliters constrain with reduction：
Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
Pi,t=Pi,S,t+Pi,J,t+Pi,z,t
Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, i-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and most
Small downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pi,S_0,tFor unit g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
Compared with immediate prior art, technical scheme has the advantages that：
The present invention considers the coordination optimizing method that bilateral electric power contract participates in balance of electric power and ener a few days ago, and bilateral electric power closes
With from the three public electricity contracts contract that to belong to two class properties different, modeled respectively in Optimized model.
The bilateral electric power contract of two classes is considered, is the bilateral electric power contract of power plant and the bilateral electric power contract of unit respectively, contract
Using different bilateral electric power contract models during type difference.
Unit output is decomposed into bilateral output part, three power parts away on official business and other output parts, establishes proper restraint
Make bilateral actual contribute be contributed no more than corresponding contract provision, so as to ensure that the contract adjustment amount in object function is non-negative, keep away
Exempt from using absolute value or square object function is become non-linear, reduce and solve difficulty.
Two class optimization aims are effectively combined, are combined together two kinds of different targets of priority by penalty factor, both
It can guarantee that maximization performs trade contract, and can minimizes cost of electricity-generating on this basis, is maximized with least cost and completes to hand over
Easily, the good economy for having taken into account transaction and having performed and generating electricity.
Brief description of the drawings
Fig. 1 is the performance comparison diagram of bilateral transaction under two kinds of unit output curves provided by the invention.
Fig. 2 is the balance of electric power and ener a few days ago technical scheme flow chart provided by the invention for considering bilateral electric power contract.
Fig. 3 is the Unit Combination result a few days ago of the bilateral electric power contract of consideration power plant provided by the invention.
Fig. 4 is the Unit Combination result provided by the invention a few days ago for considering bilateral electricity contract.
Fig. 5 is that actually bilateral output contrasts with bilateral contract power curve for power plant provided by the invention.
Fig. 6 is the Unit Combination result a few days ago of the consideration bilateral electric power contract of unit provided by the invention.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
The first step：According to annual, monthly three deciliter with the electricity for decomposing day, three following one day public affairs of each power plant are obtained
Contract generation.The bilateral electric power contract submitted according to hair electricity side, if following one day bilateral of electric power contract provision power plant
Electrical force profiles, then obtain power plant's bilateral discharging force data；If following one day bilateral electrical force profiles of electric power contract provision unit,
Unit bilateral discharging force data is then obtained, to determine constraints related to transaction in balance of electric power and ener a few days ago.
Obtain the three service message amounts that each power plant needs to complete.For example, according to the medium-term and long-term contract decomposition result of scheduling, power plant
24 hours three public Contract generation 2000MWH of A futures, then need to complete three deciliters during balance of electric power and ener a few days ago as far as possible with electricity
Amount.
Obtain bilateral electric power contract line.If the following 24 hours power curves of power plant are defined in contract, then a few days ago
Balance of electric power and ener needs to complete the bilateral curve of power plant as far as possible；It is following 24 hours that if unit inside power plant is defined in contract
Power curve, then balance of electric power and ener needs to complete the bilateral curve of unit as far as possible a few days ago.
(3) each power plant's contract curtailments factor is determined.That is, it is determined that the contract curtailments amount of each power plant accounts for the total contract of system
The scale factor of adjustment amount.Bilateral decay factor is the ratio that power plant's bilateral contract reduction accounts for the total bilateral reduction of system, three
Public decay factor is the ratio that the deciliter of power plant three accounts for total three public reduction of system with reduction.Bilateral contract on the day of each power plant
Decay factor SXi, three deciliters are the same as decay factor JXiFor：
Wherein, SiThe bilateral contract electricity determined for the bilateral electric power contracts of power plant i, JiThree deciliters of day are decomposed for power plant i
Same electricity.
According to the contracted quantity of each power plant, each power plant is according to the proportional carry out contract curtailments of its contracted quantity.The deciliter of power plant three
It is all electricity contract.Power plant's bilateral contract electricity statistical method is as follows：
1) when bilateral contract is power plant's electric power contract, according to the contracted curve of power plant's electric power, the statistics electricity of one day,
Curve as given is 24 point curves, then always adds 24 point datas and obtain power plant's bilateral contract amount of one day.
2) when bilateral contract is unit power plant electric power contract, power plant's Contract generation is calculated as follows.Step 1：Root
According to the contracted curve of unit electric power, every unit electricity of one day is counted, such as given curve is 24 point curves, then by 24
Point data, which always adds, obtains the unit bilateral contract amount of one day.Step 2：By the bilateral contract amount (step of all units in a power plant
Rapid 1 gained) always add, count the bilateral contract amount of a power plant.
Assuming that tri- power plant of A, B, C, each class contract curtailments factor of power plant two is counted according to two class Contract generations.
| Power plant | Bilateral contract (MWH) | Three deciliters are the same as (MWH) | Bilateral decay factor | Three public decay factors |
| A | 6000 | 2000 | 2/5 | 1/2 |
| B | 5000 | 1000 | 1/3 | 1/4 |
| C | 4000 | 1000 | 4/15 | 1/4 |
According to information in table, it may be determined that in optimization problem with each power plant bilateral contract in bilateral contract amount related constraint
Amount cuts down the scale factor 6 for accounting for total bilateral reduction：5：4, if the scale factor that power plant A, B, C bilateral contract are cut down is respectively
SXA、SXB、SXC, then
The scale factor for accounting for total bilateral reduction is cut down with each power plant three deciliter same amount in three deciliter same amount related constraints
2：1：1, if the scale factor that power plant A, B, C bilateral contract are cut down is respectively JXA、JXB、JXC, then
Second step：Obtain the following 24 hours prediction data of system loading.Obtain basic parameter and the coal consumption of each fired power generating unit
Characteristic, to determine power-balance constraint and fired power generating unit relevant constraint.Fired power generating unit related constraint includes unit output
Limitation, minimum startup-shutdown time-constrain.
3rd step：The bilateral contract type determined according to the first step, if bilateral electric power contract is power plant's electric power contract,
Jump to the 4th step.If bilateral electric power contract is unit electric power contract, the 5th step is jumped to.
4th step：Established according to the first step and the data of second step and consider power plant's electric power contract balance of electric power and ener association a few days ago
Optimized model is adjusted, object function and constraints are determined according to the requirement of operation and purpose, constraints includes fired power generating unit phase
Close constraint, contract related constraint and system operation constraint.
Optimization aim includes two：Minimum contract adjustment amount and minimum cost of electricity-generating, wherein the adjustment of the contract of minimum
It is higher to measure priority, minimizes cost of electricity-generating and takes second place, i.e., minimizes cost of electricity-generating on the premise of maximum possible performs transaction.For
This purpose is realized, larger penalty factor is introduced into and coordinates the contribution function of two targets in general objective.Work as bilateral contract
For electric power contract when, bilateral contract and three deciliters the same as modeling respectively as two kinds of independent electricity compositions.To establish linear model, mesh
Contract adjustment amount need to be that just, its implementation is that unit output is decomposed into bilateral transaction corresponding contribute part and three in scalar functions
Service message amount corresponding contribute part and other parts, and the bilateral output of power plant is constrained no more than power plant's bilateral contract regulation in constraint
Contribute.
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
Wherein, H is the sum in power plant, and N is fired power generating unit sum, and T is period sum, and Δ S is bilateral contract reduction,
Δ J is the same reduction of three deciliters, and C (P) is system cost of electricity-generating, M1For contract curtailments penalty factor, M2For cost of electricity-generating weight, W1
Weight, W are cut down for bilateral contract2For three public contract curtailments weights, Pg,0,tProvide to contribute for power plant g periods t bilateral contract,
Pi,S,tRepresent corresponding with trade contract part in unit output to contribute, Jg,0For power plant g three public Contract generations, Pi,J,tRepresent
It is corresponding with trade contract part in unit output to contribute, fi,tFor the operating cost of fired power generating unit, SUi,t、SDi,tRespectively thermoelectricity
The start cost of unit, shut down cost.
M1、M2Selection be then according to transaction perform priority, when transaction need maximize perform when, contract curtailments power
It is heavy then take higher value, such as M1Take 104, M21, i.e., when contract curtailments amount reduces 1 is taken, object function can be made to reduce by 10000,
Such influence is far longer than influence of the cost of electricity-generating change to object function, it is ensured that preferential to ensure that minimum contract is cut
Subtract, then reduce cost of electricity-generating as premise again.
W1、W2Selection be then according to bilateral, the three public priority performed, when bilateral needs preferentially perform, W1Take larger
Value, conversely, W2Take higher value.Such as M1Take 104, M2When taking 1, W1Take 4, W2Take 1, then, can when bilateral contract reduction reduces 1
So that object function reduces by 40000, when three deciliters reduce 1 with reduction, object function can be made to reduce by 10000, it is so double
Side contract curtailments to and influence the influence for being far longer than three public contract curtailments, the influences of contract curtailments is far longer than cost of electricity-generating change
Change influence to object function, it is ensured that it is preferential to ensure to minimize contract curtailments, then reduce again as premise generate electricity into
This.
Constraints is related to contract including power-balance, minimum startup-shutdown time, standby, climbing, unit output limitation
Constraint, it is as follows：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：
Upper and lower spinning reserve constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Power plant g t period bilateral contract output reduction nonnegativity restrictions：
Power plant g three deciliters constrain with reduction：
Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
Pi,t=Pi,S,t+Pi,J,t+Pi,z,t
Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, i-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and minimum
Downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pg,0,tFor power plant g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
Contract curtailments amount needs to coordinate between power plant, so adding power plant's reduction and system contract curtailments are total in constraint
The relation constraint of amount.Power plant g bilateral contract output reduction nonnegativity restrictions and three deciliters, can be to prevent with reduction nonnegativity restrictions
It is negative part power plant reduction only occur, and part power plant reduction is just, to cause to close between contract curtailments Liang Zong added-time power plant of power plant
With the positive and negative cancellation of reduction.For power plant, it concerns whole power plant's contract completion rate, and contract curtailments amount is in power plant
Distribution between internal unit is then the economic influence by generating set, minimizes the target of cost of electricity-generating and will realize this
Point, maximized this guarantees power plant with minimum cost and complete generating contract, meet power plant's interests, reduce cost of electricity-generating.
5th step：Established according to the first step and the data of second step and consider unit electric power contract balance of electric power and ener association a few days ago
Optimized model is adjusted, object function and constraints are determined according to the requirement of operation and purpose, constraints includes fired power generating unit phase
Close constraint, contract related constraint and system operation constraint.
Optimization aim includes two：Minimum contract adjustment amount and minimum cost of electricity-generating, wherein the adjustment of the contract of minimum
It is higher to measure priority, minimizes cost of electricity-generating and takes second place, i.e., minimizes cost of electricity-generating on the premise of maximum possible performs transaction.For
This purpose is realized, larger penalty factor is introduced into and coordinates the contribution function of two targets in general objective.Work as bilateral contract
For electric power contract when, bilateral contract and three deciliters the same as modeling respectively as two kinds of independent electricity compositions.To establish linear model, mesh
Contract adjustment amount need to be that just, its implementation is that unit output is decomposed into bilateral transaction corresponding contribute part and three in scalar functions
Service message amount corresponding contribute part and other parts, and constrain the bilateral output part of unit in constraint and be not more than unit bilateral contract
Regulation is contributed.
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
Wherein, H is the sum in power plant, and N is fired power generating unit sum, and T is period sum, and Δ S is bilateral contract reduction,
Δ J is the same reduction of three deciliters, and C (P) is system cost of electricity-generating, M1For contract curtailments penalty factor, M2For cost of electricity-generating weight, W1
Weight, W are cut down for bilateral contract2For three public contract curtailments weights, Pi,S_0,tProvide to contribute for unit i periods t bilateral contract,
Pi,S,tRepresent corresponding with trade contract part in unit output to contribute, Jg,0For power plant g three public Contract generations, Pi,J,tRepresent
It is corresponding with trade contract part in unit output to contribute, fi,tFor the operating cost of fired power generating unit, SUi,t、SDi,tRespectively thermoelectricity
The start cost of unit, shut down cost.
M1、M2Selection be then according to transaction perform priority, when transaction need maximize perform when, contract curtailments power
It is heavy then take higher value, such as M1Take 104, M21, i.e., when contract curtailments amount reduces 1 is taken, object function can be made to reduce by 10000,
Such influence is far longer than influence of the cost of electricity-generating change to object function, it is ensured that preferential to ensure that minimum contract is cut
Subtract, then reduce cost of electricity-generating as premise again.
W1、W2Selection be then according to bilateral, the three public priority performed, when bilateral needs preferentially perform, W1Take larger
Value, conversely, W2Take higher value.Such as M1Take 104, M2When taking 1, W1Take 4, W2Take 1, then, can when bilateral contract reduction reduces 1
So that object function reduces by 40000, when three deciliters reduce 1 with reduction, object function can be made to reduce by 10000, it is so double
Side contract curtailments to and influence the influence for being far longer than three public contract curtailments, the influences of contract curtailments is far longer than cost of electricity-generating change
Change influence to object function, it is ensured that it is preferential to ensure to minimize contract curtailments, then reduce again as premise generate electricity into
This.
Constraints is related to contract including power-balance, minimum startup-shutdown time, standby, climbing, unit output limitation
Constraint, it is as follows：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：
Upper and lower spinning reserve constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Unit i t period bilateral contract output reduction nonnegativity restrictions：
Pi,S_0,t≥Pi,S,t
Power plant g three deciliters constrain with reduction：
Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
Pi,t=Pi,S,t+Pi,J,t+Pi,z,t
Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, t-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and minimum
Downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pi,S_0,tFor unit g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
Contract curtailments amount needs to coordinate between power plant, so adding power plant's reduction and system contract curtailments are total in constraint
The relation constraint of amount.The output reduction nonnegativity restrictions of unit bilateral contract and the deciliter of power plant three, can be with reduction nonnegativity restrictions
It is negative to prevent part power plant reduction, and part power plant reduction causes between contract curtailments Liang Zong added-time power plant of power plant for just
The positive and negative cancellation of contract curtailments amount.For power plant, it concerns whole power plant's contract completion rate, and contract curtailments amount is in electricity
Distribution inside factory between unit is then the economic influence by generating set, and this will be realized by minimizing the target of cost of electricity-generating
Point, this guarantees power plant to maximize generating contract of completing with minimum cost, load power plant interests, reduces cost of electricity-generating.
6th step：According to bilateral electric power contract type, the MIXED INTEGER that the 4th step determines is solved when being power plant's electric power contract
Planning problem, the mixed integer programming problem that the 4th step determines is solved when being unit electric power contract.
7th step：Using the result that the 6th step obtains as power network machine unit scheduling scheme, it is determined that 24 hours futures unit is opened
Plan and unit output plan and power plant's reduction are shut down, ensures the execution of bilateral transaction and three service message amounts as far as possible, is improved
The security and economy of operation of power networks.
As shown in Figure 1：Power curve 1 is as the completion electricity of power curve 2 in figure, but curve shape difference cause it is double
Side transaction performance is different, and power curve 1 completes bilateral electric power contract, but curve 2 is contributed less than bilateral in some periods
Electric power contract, causes bilateral contract not to be fully completed.
3 thermal power plants, 7 fired power generating units, Power Plant parameter such as table 1, load prediction data such as table 2, the bilateral electricity of power plant
Power contract information such as table 3, three public contract information of power plant such as table 4.
The Power Plant parameter of table 1
The load prediction data of table 2
| Period | Load/MW | Period | Load/MW |
| 1 | 575.19 | 13 | 642.18 |
| 2 | 565.15 | 14 | 643.6 |
| 3 | 558.67 | 15 | 648.86 |
| 4 | 554.73 | 16 | 655.79 |
| 5 | 555.06 | 17 | 656 |
| 6 | 560.48 | 18 | 638.74 |
| 7 | 573.39 | 19 | 645.97 |
| 8 | 590.4 | 20 | 632.35 |
| 9 | 605.56 | 21 | 637.31 |
| 10 | 617.2 | 22 | 627.14 |
| 11 | 628.61 | 23 | 601.05 |
| 12 | 636.1 | 24 | 596.75 |
The bilateral electric power contract information of the power plant of table 3
It is as shown in table 4 according to the statistics of table 3 power plant contract information, calculate the contract curtailments factor of each power plant.Choose M1、M2
Respectively 10000 and 1, W1、W2Respectively 4 and 1, preferentially ensure bilateral execution, solve and consider the bilateral electric power contract of power plant a few days ago
Balance of electric power and ener optimization problem, obtains Unit Combination result such as accompanying drawing 3, power plant actually bilateral power curve and power plant's contract line
To such as accompanying drawing 5, the bilateral output result of unit such as table 5, unit output is as shown in table 6, contract curtailments result such as table 7.
The power plant's contract curtailments factor of table 4
| Power plant | Bilateral contract/MW | Three deciliters are the same as/MW | Bilateral decay factor | Three public decay factors |
| A | 6447 | 1611.75 | 0.5 | 0.5 |
| B | 1074.5 | 268.63 | 0.083 | 0.083 |
| C | 5372.5 | 1343.13 | 0.417 | 0.417 |
| It is accumulative | 12894 | 3223.51 | 1 | 1 |
Bilateral contract decay factor：
Similarly, the same decay factor of three deciliters：
The bilateral output result of the unit of table 5
The unit output result of table 6
The power plant's contract curtailments of table 7 and cost of electricity-generating result
Contrast considers the Unit Combination result (accompanying drawing 3) of the bilateral electric power contract of power plant and considers the unit of bilateral electricity contract
Combined result (accompanying drawing 4), the former with the latter increase 3 periods compared to unit G2, and unit G4 increases 6 periods, and unit G5 increases 6
Individual period, unit G6 reduce by 1 period, and this is due to the part output that the bilateral electric power contract of power plant secures power plant's power curve
Shape, the startup-shutdown of unit are influenceed by electric power contract line, are started shooting the period to meet that the requirement of contract line increases unit.
With reference to the accompanying drawings 5, it is seen that when bilateral contract defines the bilateral power curve of power plant, the actual bilateral power curve of power plant
As close possible to bilateral contract curve, optimum results perform bilateral contract as far as possible.
The present invention effectively combines two class optimization aims, it is desirable to be able to and realize to maximize with least cost and complete transaction, it is excellent
The economy that transaction is performed and generated electricity is taken into account in change, so the cost of electricity-generating in the case of two kinds of contrast, a kind of situation is to minimize
Contract adjustment amount and minimum elelctrochemical power generation cost combined optimization, another situation are that object function only includes the adjustment of minimum contract
Amount, optimum results are to such as table 8.
The cost of electricity-generating of table 8 contrasts
Table 8 shows, using contract adjustment amount with cost of electricity-generating combined optimization with using contract adjustment amount single object optimization phase
Than that can ensure to maximize execution transaction electricity, the reduction of transaction is consistent, but two kinds of Different Optimizations are to cost of electricity-generating
Influence significantly, combined optimization has taken into account economics of power generation, and cost of electricity-generating shows to combine than reducing by 27.68% during single object optimization
Optimization is effective.
Finally it should be noted that:Above example is merely to illustrate the technical scheme of the application rather than to its protection domain
Limitation, although the application is described in detail with reference to above-described embodiment, those of ordinary skill in the art should
Understand:Those skilled in the art read the embodiment of application can be still carried out after the application a variety of changes, modification or
Person's equivalent substitution, but these changes, modification or equivalent substitution, are applying within pending claims.
Claims (7)
1. a kind of bilateral electric power contract participates in the coordination optimizing method of balance of electric power and ener a few days ago, it is characterised in that the optimization
Method includes：
(1) three following one day public Contract generations of each power plant are obtained, obtaining the bilateral electric power of power plant according to bilateral contract type closes
With data or the bilateral power contract data of unit and determine each power plant's contract curtailments factor；
(2) the following 24 hours prediction data of system loading, the basic parameter and coal consumption characteristic of each fired power generating unit are obtained；
(3) if bilateral electric power contract is the bilateral electric power contract of power plant, step (4) is gone to；If bilateral electric power contract is machine
The bilateral electric power contract of group, then go to step (5)；
(4) the balance of electric power and ener Coordination and Optimization Model a few days ago for considering the bilateral electric power contract of power plant is established, including：Determine target letter
Count and constraints is set, go to step (6)；
(5) the balance of electric power and ener Coordination and Optimization Model a few days ago for considering the bilateral electric power contract of unit is established, including：Determine target letter
Count and constraints is set, go to step (6)；
(6) mixed integer programming problem is solved；
(7) startup-shutdown plan and unit output plan and the power plant's reduction of 24 hours futures unit are determined.
2. coordination optimizing method as claimed in claim 1, it is characterised in that the step (1) includes：
A, when bilateral contract is power plant's bilateral electric power contract, according to the contracted power plant's power curve of the bilateral electric power of power plant, system
The meter bilateral contract amount of one day；
B, when bilateral contract is unit bilateral electric power contract, according to the contracted unit output curve of the bilateral electric power of unit, system
Every unit electricity of one day is counted, the bilateral contract amount of all units in a power plant is added, obtains the bilateral of power plant
Contracted quantity.
3. coordination optimizing method as claimed in claim 1, it is characterised in that in the step (1), the decay factor bag
Include：Bilateral decay factor and three public decay factors, the bilateral decay factor are that to account for system always double for power plant's bilateral contract reduction
The ratio of side reduction；The three public decay factor is the ratio that the deciliter of power plant three accounts for total three public reduction of system with reduction.
4. coordination optimizing method as claimed in claim 1, it is characterised in that in the step (4), optimization aim includes：Most
Small chemical combination is with adjustment amount and minimizes cost of electricity-generating；Minimum contract adjustment amount priority is higher；
The object function is：
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
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Weight, W2For three public contract curtailments weights, Δ S is bilateral contract reduction, and Δ J is the same reduction of three deciliters, and C (P) sends out for system
Electric cost, Pg,0,tProvide to contribute for the bilateral contract of g power plant t periods, H is the sum in power plant, and N is fired power generating unit sum, and T is
Period sum, Pi,S,tRepresent bilateral output part in unit output, Jg,0For three public Contract generations of g power plant, Pi,J,tExpression machine
Three power parts away on official business during group is contributed, fi,tFor the operating cost of fired power generating unit, SUi,t、SDi,tRespectively the start of fired power generating unit into
Originally cost, is shut down.
5. the coordination optimizing method as described in claim 1 or 4, it is characterised in that in the step (4), the constraints
Including：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：
Upper and lower spinning reserve constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Power plant g t period bilateral contract output reduction nonnegativity restrictions：
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Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
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Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, t-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and most
Small downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pg,0,tFor power plant g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
6. coordination optimizing method as claimed in claim 1, it is characterised in that in the step (5), optimization aim includes：Most
Small chemical combination is with adjustment amount and minimizes cost of electricity-generating；Minimum contract adjustment amount priority is higher；
The object function is：
F=M1*(W1*ΔS+W2*ΔJ)+M2*C(P)
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<mi>N</mi>
</munderover>
<munderover>
<mo>&Sigma;</mo>
<mrow>
<mi>t</mi>
<mo>=</mo>
<mn>1</mn>
</mrow>
<mi>T</mi>
</munderover>
<mrow>
<mo>(</mo>
<msub>
<mi>f</mi>
<mrow>
<mi>i</mi>
<mo>,</mo>
<mi>t</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>S</mi>
<mrow>
<mi>U</mi>
<mi>i</mi>
<mo>,</mo>
<mi>t</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>S</mi>
<mrow>
<mi>D</mi>
<mi>i</mi>
<mo>,</mo>
<mi>t</mi>
</mrow>
</msub>
<mo>)</mo>
</mrow>
</mrow>
Wherein, Pi,S_0,tProvide to contribute in period t bilateral contract for unit i.
7. the coordination optimizing method as described in claim 1 or 6, it is characterised in that in the step (5), the constraints
Including：
Power-balance constraint：
Fired power generating unit starts variable and shuts down dynamic variable constraint：
Ii,t-Ii,t-1=ui,t-vi,t, ui,t+vi,t≤1
Minimum startup-shutdown time-constrain：
Upper and lower spinning reserve constraint：
Climing constant：Pi,t-Pi,t-1≤Ri(1+Ii,t-1-Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Landslide constraint：Pi,t-1-Pi,t≤Di(1-Ii,t-1+Ii,t)+Pi,min(2-Ii,t-1-Ii,t)
Power plant g bilateral contract reduction constraint：
Power plant g bilateral contract reduction and the relation constraint of the total bilateral contract reduction of system：
ΔSg=SXg·ΔS
Unit i t period bilateral contract output reduction nonnegativity restrictions：
Pi,S_0,t≥Pi,S,t
Power plant g three deciliters constrain with reduction：
Relation constraint of power plant g three deciliters with reduction with total three deciliter of system with reduction：
ΔJg=JXg·ΔJ
Power plant g three deciliters are the same as reduction nonnegativity restrictions：
ΔJg≥0
Unit output and the relation constraint of unit transaction output part：
Pi,t=Pi,S,t+Pi,J,t+Pi,z,t
Unit transaction output part restriction：Pi,S,t≥0
The power part restriction away on official business of unit three：Pi,J,t≥0
Unit output other components restriction：Pi,z,t≥0
Fired power generating unit output restriction：Pi,minIi,t≤Pi,t≤Pi,maxIi,t
Wherein, Ii,tFor the running status of fired power generating unit t periods, II, t-1For the running status of fired power generating unit t-1 periods,To have been switched on time and downtime to t-1 period ends,Respectively minimum available machine time and most
Small downtime, Pi,tContributed for the plan of t period fired power generating units, Pi,max、Pi,minRespectively the fired power generating unit output upper limit, lower limit,
Pi,S,tFor bilateral output part, P in unit outputi,J,tFor in unit output three power parts away on official business, Pi,z,tTo be removed in unit output
Remove the other components of transaction output part and three power parts away on official business, LtFor t period system loadings, RUt、RDtDuring respectively t
The spinning reserve demand up and down of section, Ri、DiRespectively fired power generating unit i creep speed and landslide speed, ui,tOpened for fired power generating unit i
Dynamic variable, vi,tFor fired power generating unit i stoppage in transit variables, Δ S is the total bilateral contract reduction of system, and Δ J is three total deciliters of system
Same reduction, Δ SgFor power plant g bilateral contract reduction, Δ JgFor the power plant g same reduction of three deciliters, Pi,S_0,tFor unit g
Period t bilateral contract regulation is contributed, Jg,0For power plant g three public Contract generations, NgFor power plant g all machine group #；SXgFor
Power plant g bilateral contracts amount cuts down the scale factor for accounting for macrocontract reduction, JXgCut down for the deciliter same amounts of power plant g tri- and account for macrocontract
The scale factor of reduction.
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