CN107732949A - A kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation is layouted constant volume method - Google Patents
A kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation is layouted constant volume method Download PDFInfo
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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
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
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Abstract
Layouted constant volume method the invention discloses a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation, including：Electrical network parameter and energy storage parameter are obtained, is invested with operating cost, energy storage, abandons wind punishment, sends the minimum object function of cost sum outside, establish the energy storage plan model based on operation simulation；Identify that battery energy storage alternate node be used as in the larger position of battery energy storage demand by more scene analysis, and propose energy storage demand than, maximum two indexs of energy storage demand day of equivalent whole year to integrate the difference of Various Seasonal energy storage demand, it is determined that constant volume scheme of finally layouting.The present invention considers the cost of investment of energy storage in the object of planning, simultaneously using energy storage demand than having considered the seasonal variation in Various Seasonal energy storage demand, effectively alleviated on the basis of economy is ensured and wind is abandoned caused by regulating power deficiency ration the power supply problem, be advantageous to consider from the overall situation simultaneously, improve the overall economy quality and utilization ratio of energy storage planning.
Description
Technical field
The invention belongs to electrical engineering field, more particularly, to a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation
Layout constant volume method.
Background technology
Since 21 century, under energy crisis and the dual-pressure of environmental pollution, wind-powered electricity generation possesses because of its technology maturation
The advantages that scale development condition, good commercialized development prospect, quickly grows.Newly-increased 23,370,000 kilowatts of the installation in China in 2016, adds up
Installed capacity reaches 1.69 hundred million kilowatts, is twice of the U.S. that installation amount is located at second place of the world.Yet with wind power output
Randomness and fluctuation, wind-powered electricity generation large-scale grid connection bring great challenge to power system.The especially deficiency of system adjustable capacity
It will cause seriously to abandon wind, and hinder the sound development of wind-powered electricity generation.The fast development of energy storage technology provides well for reply wind electricity digestion
Resolving ideas.But at this stage, the development of energy storage is ripe not enough, the problems such as cost of investment is high, less economical be present.Cause
This ensures the economy of planning, it is necessary to take cost-effective energy storage planing method while alleviating and abandoning wind problem.Exist at present
The country, conventional energy storage planing method include energy storage planning, the minimum energy storage planning of consumption wind-powered electricity generation in full stabilized based on fluctuation,
The former only considers effect of the energy storage in smooth wind power curve, but have ignored contribution of the energy storage in wind electricity digestion is promoted, and causes
Wind rate is abandoned under great number energy storage investment still to remain high, the latter does not consider the high of energy storage fully to dissolve wind-powered electricity generation as target
Cost, also result in the poorly efficient of investment.Meanwhile the two only considers energy storage planning under single load day, does not count and energy storage demand
Seasonal variation, further result in the unreasonable of energy storage investment distribution.
As can be seen here, prior art exist it is less economical, can not effectively alleviate and abandon wind caused by regulating power deficiency
The technical problem rationed the power supply.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of comprehensive wind-powered electricity generation annual more seasons are special
Property energy storage layout constant volume method, thus solve prior art exist it is less economical, can not effectively alleviate because of regulating power not
The technical problem that wind is rationed the power supply is abandoned caused by foot.
To achieve the above object, layouted constant volume side the invention provides a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation
Method, including：
(1) electrical network parameter and energy storage parameter are obtained, is invested with operating cost, energy storage, is abandoned wind punishment, sends cost sum outside most
Small is object function, is constrained with battery energy storage system, pumped storage constrains, thermal power unit operation constrains, sends circuit fortune outside
Row constraint and operation simulation system are constrained to constraints, establish the energy storage plan model based on operation simulation；
(2) according to electrical network parameter, energy storage parameter and the energy storage plan model simulated based on operation, solving model is built；
(3) typical day, battery energy storage cost are changed successively, are abandoned wind penalty coefficient and are obtained a series of scenes, it is each to each node
Battery energy storage takes average, the maximum preceding N of average under sceneoIndividual node be battery energy storage alternate node, water-storage it is alternative
Node is installation location；
(4) obtain the energy storage investment of typical case's day winter using solving model and the energy storage of typical case's day summer is invested, winter allusion quotation
The energy storage investment of type day and the business of the energy storage investment of typical case's day summer are energy storage demand ratio, and energy storage invests larger typical day as most
Big energy storage demand day, annual equivalent maximum energy storage demand day is obtained using energy storage demand ratio；
(5) using annual equivalent maximum energy storage plan model of the energy storage demand day renewal based on operation simulation, updated
Battery energy storage cost and water-storage cost afterwards, based on solving model, according to the alternate node of battery energy storage, water-storage
Battery energy storage cost and water-storage cost after alternate node, renewal, constant volume scheme of finally being layouted.
Further, electrical network parameter includes：Fired power generating unit economic parameters, Wind turbines economic parameters, interregional transmission of electricity warp
Help parameter, systems technology parameter and thermoelectricity technical parameter, and the power data of the wind-powered electricity generation of winter or summer typical case's day and load
PW, i, t,
Systems technology parameter includes：Circuit-node incidence matrix A, line admittance bl, send circuit nominal operation power outsideCircuit transmission capacity Fl max, system is the reserved spinning reserve ratio R of reply unit failure；
Thermoelectricity technical parameter includes：Fired power generating unit sum Ng, each fired power generating unit i output upper and lower limit Pi max、Pi min, upper,
Lower creep speedMaximum opens, stops powerMinimum continuously opens, downtimeUnit initial launch shape
State and initial operating timeTi 0；
Fired power generating unit economic parameters is operating cost conic section parameter ai, bi, ci, Wind turbines economic parameters is to abandon wind
Penalty coefficient kw, interregional transmission of electricity economic parameters is that circuit sends income coefficient k outsideo。
Further, energy storage parameter includes the technical parameter and economic parameters, the technical parameter of water-storage of battery energy storage
And economic parameters, the technical parameter and economic parameters of battery energy storage include：Battery energy storage planning alternate node number Ns, battery energy storage
Unit power cost, unit energy costThe efficiency for charge-discharge of battery energy storageThe specified list of battery energy storage
First powerBy rated power maximum continuous discharge and recharge time H, each node battery energy storage unit plans transformation
The technical parameter and economic parameters of water-storage include：Pumped storage planning alternate node number Np, unit power cost, the unit of pumped storage
Cost of energyThe efficiency for charge-discharge of pumped storageThe rated power of pump-storage generatorEach node draws water storage
Can unit planning transformation
Further, object function is：
Min Ψ=Cgen+Cstr+Cwin-Cout,
Wherein, CgenRepresent operating cost, CstrRepresent energy storage investment, CwinWind punishment, C are abandoned in expressionoutCircuit is sent in expression outside
Income ,-CoutCost is sent in expression outside,
Wherein, T be operation simulation it is total when hop count, Np, Ns, Nc, respectively hydroenergy storage station, battery energy storage power station, fire
Group of motors sum,Output and operating cost during respectively unit i period t；SPt wWind total amount is abandoned for the t periods；
PLnk, tThe t periods send power outside；Respectively the power capacity of m platforms battery energy storage power station planning, energy hold
Amount；EEPS, iFor i-th hydroenergy storage station energy capacity, QPS, iFor the pump-storage generator number of i-th hydroenergy storage station,For the rated power of pump-storage generator, koIncome coefficient is sent in expression outside, and δ represents discount rate, YRsRepresent that battery energy storage is complete
Life cycle, YRpRepresent water-storage life cycle management, NdRepresent that annual energy storage is equivalent and utilize number of days,Respectively battery
The unit power cost of energy storage, cost of energyThe battery energy storage cost to day is converted according to its life cycle management,
Respectively the unit power cost of pumped storage, cost of energyAccording to its life cycle management conversion to day water-storage into
This.
Further, battery energy storage system constraint includes：Battery energy storage system operation constraint, battery energy storage system are put, filled
Electrical power constrains, the constraint of battery energy storage system real-time power, battery energy storage system plan constraint, and battery energy storage system energy holds
Amount, power capacity equality constraint, the constraint of the battery energy storage single node energy-storage units number upper limit；
The pumped storage constraint includes：Pumped storage operation constraint, pumped storage is put, charge power
Constraint, the constraint of pumped storage charging and discharging state, pumped storage operation energy constraint；Pumped storage is planned about
Beam, the constraint of hydroenergy storage station energy capacity；
The thermal power unit operation constraint includes：Thermal power unit operation constrains, the constraint of fired power generating unit output bound, thermoelectricity
The minimum continuous start and stop time-constrain of unit, fired power generating unit climbing upper limit constraint, fired power generating unit maximum start and stop power constraint；
The operation simulation system constraint includes：Node power Constraints of Equilibrium, spinning reserve constraint, Line Flow constraint.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) present invention considers otherness of the same node in Various Seasonal energy storage demand, the side based on operation simulation
Method establishes model, and the cost of investment of energy storage is considered in the energy storage plan model based on operation simulation, is thrown with operating cost, energy storage
Provide, abandon wind punishment, send the minimum object function of cost sum outside, the economy of investment is ensured while wind electricity digestion is promoted.
Identify that the larger node of battery energy storage demand is used as battery energy storage alternate node by more scene analysis simultaneously, and pass through calculating
When annual equivalent maximum two indexs of energy storage demand day of energy storage demand are layouted constant volume scheme with integrating the energy storage under Various Seasonal.
The present invention has validity concurrently in economy.
(2) present invention can effectively be alleviated due to abandoning wind problem caused by regulating power deficiency by rational energy storage configuration；
The financial cost of energy storage is considered in planning, operating cost and program cost are put into same object function, is promoting wind
Electricity consumption while avoid the excess investment of energy storage, while abandon wind penalty coefficient setting allow policymaker wind electricity digestion with
Preference adjustment is carried out between unit economy；The energy storage demand on Time of Day yardstick is not only allowed for, more layout constant volume side to energy storage
Case is integrated in seasonal difference, further improves the global economy of energy storage planning；Establish it is perfect, be easy to solve
The energy storage plan model based on operation simulation, both the battery energy storage comprising power-type or included the water-storage of energy type, and
Model passes through transformation to linearity, is easy to rapid solving.
Brief description of the drawings
Fig. 1 is that a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation provided in an embodiment of the present invention is layouted constant volume method
Flow chart；
Fig. 2 (a) is winter typical case's daily load prediction curve that Example 1 and Example 2 of the present invention provides；
Fig. 2 (b) is the winter typical case day wind-powered electricity generation prediction curve that Example 1 and Example 2 of the present invention provides；
Fig. 3 (a) is summer typical case's daily load prediction curve that Example 1 and Example 2 of the present invention provides；
Fig. 3 (b) is the summer typical case day wind-powered electricity generation prediction curve that Example 1 and Example 2 of the present invention provides；
Fig. 4 is all kinds of unit outputs of system and to abandon wind curve before the configuration energy storage that the embodiment of the present invention 1 provides；
Fig. 5 is all kinds of unit outputs of system and to abandon wind curve after the configuration energy storage that the embodiment of the present invention 1 provides；
Fig. 6 is all kinds of unit outputs of system and to abandon wind curve before the configuration energy storage that the embodiment of the present invention 2 provides；
Fig. 7 is all kinds of unit outputs of system and to abandon wind curve after the configuration energy storage that the embodiment of the present invention 2 provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
Constant volume method, including following step as shown in figure 1, a kind of energy storage for integrating the annual more Seasonal Characteristics of wind-powered electricity generation is layouted
Suddenly：
Step 1：Obtain electrical network parameter and energy storage parameter.
The electrical network parameter includes：Fired power generating unit economic parameters, Wind turbines economic parameters, the economic ginseng of interregional transmission of electricity
Number, systems technology parameter and thermoelectricity technical parameter, and the power data P of the wind-powered electricity generation of winter or summer typical case's day and loadW, i, t,
Systems technology parameter includes：Circuit-node incidence matrix A, line admittance bl, send circuit nominal operation power outsideCircuit transmission capacity Fl max, system is the reserved spinning reserve ratio R of reply unit failure.
Thermoelectricity technical parameter includes：Fired power generating unit sum Ng, each fired power generating unit i output upper and lower limit Pi max、Pi min, upper,
Lower creep speedMaximum opens, stops powerMinimum continuously opens, downtimeUnit initial launch shape
State and initial operating timeTi 0。
Fired power generating unit economic parameters is operating cost conic section parameter ai, bi, ci, Wind turbines economic parameters is to abandon wind
Penalty coefficient kw, interregional transmission of electricity economic parameters is that circuit sends income coefficient k outsideo。
Energy storage parameter includes technical parameter and economic parameters, the technical parameter of water-storage and economic ginseng of battery energy storage
Number, the technical parameter and economic parameters of battery energy storage include：Battery energy storage planning alternate node number Ns, the specific work of battery energy storage
Rate cost, unit energy costThe efficiency for charge-discharge of battery energy storageThe rated power of battery energy storagePress
Rated power maximum continuous discharge and recharge time H, each node battery energy storage unit plan transformationThe skill of water-storage
Art parameter and economic parameters include：Pumped storage planning alternate node number Np, unit power cost, the unit energy cost of pumped storageThe efficiency for charge-discharge of pumped storageThe rated power of pump-storage generatorEach node pumped-storage units rule
Draw transformation
Step 2：Establish the energy storage plan model based on operation simulation
Object function：Min Ψ=Cgen+Cstr+Cwin-Cout, wherein, CgenRepresent operating cost, CstrEnergy storage investment is represented,
CwinWind punishment, c are abandoned in expressionoutCircuit income ,-C are sent in expression outsideoutCost is sent in expression outside, before line efficiency is sent in guarantee outside
Put, following four aspect should be embodied to the object of planning that regenerative resource dissolves by improving large-scale wind power interconnected electric power system：
First, Optimum system convention unit, reduces operating cost, second, reducing energy-storage system cost of investment as far as possible；It is third, abundant
Using wind-power electricity generation resource, reduce abandon wind punishment as far as possible；Fourth, making full use of regenerative resource to send out circuit, circuit profit is improved
With rate, circuit income is sent in increase outside.Wherein every detailed expressions are as follows：
Wherein T be operation simulation it is total when hop count, Np, Ns, Nc, respectively hydroenergy storage station, battery energy storage power station, fire
Group of motors sum.Output and operating cost during respectively unit i period t；SPt wWind total amount is abandoned for the t periods；
PLnk, tThe t periods send power outside；Respectively the power capacity of m platforms battery energy storage power station planning, energy hold
Amount；EEPSiFor i-th hydroenergy storage station energy capacity, QPS, iFor the pump-storage generator number of i-th hydroenergy storage station,For the rated power of pump-storage generator.koIncome coefficient is sent in expression outside, and δ represents discount rate, YRsRepresent that battery energy storage is complete
Life cycle, YRpRepresent water-storage life cycle management, NdRepresent that annual energy storage is equivalent and utilize number of days,Respectively battery
The unit power cost of energy storage, cost of energyThe battery energy storage cost to day is converted according to its life cycle management,
Respectively the unit power cost of pumped storage, cost of energyAccording to its life cycle management conversion to day water-storage into
This.
Constraints is as follows：
(1) battery energy storage system constrains
Constrain (2)-(3) be battery energy storage system operation constraint, (2) be respectively battery energy storage system put, charge power about
Beam, (3) constrain for battery energy storage system real-time power, and (4)-(6) are battery energy storage system plan constraint, and (4) (5) are respectively electricity
Pond energy-storage system energy capacity, power capacity equality constraint, (6) constrain for the battery energy storage single node energy-storage units number upper limit,
(7)-(10) are non-linear linear variable displacement processing procedure, and (7) characterize planning unit number this integer variable by binary law,
(8) levoform is linearized into expression by introducing intermediate variable, (9) (10) constrain intermediate variable by large M, and M is a guarantee
More than the constant of intermediate variable, (11) represent the 0-1 variables in model.Wherein,Respectively node m periods t
Electric discharge, charge power；EBS, m(t), EBS, m(t-1) battery energy storage power station t, the energy of t-1 periods, E are represented respectivelyBS, m
(T),Represent that operation simulates the energy of last period and runs the primary power before simulation respectively.For table
The 0-1 variables of charging and discharging state are levied, 0 represents charging, and 1 represents electric discharge；For the efficiency for charge-discharge of battery energy storage；Em0Represent
Node m battery energy storage energy initial values, QBS, mFor node m energy-storage units quantity,For the maximum allowable energy-storage units numbers of node m
Amount；The rating unit power of node m battery energy storages is represented, H, which is that battery energy storage power station is maximum, continues discharge and recharge hourage；
xM, kThe 0-1 variables for being and corresponding to binary value and matching, k=1,2 ..., vm；It is to represent that characterizing Binary Zero -1 becomes
Measure xM, kWith discharge and recharge 0-1 variablesThe intermediate variable of product.
(2) pumped storage constrains
It is pumped storage operation constraint to constrain (12)-(15), and (12) (13) are respectively that pumped storage is put, charged
Power constraint, for economy, pumped storage unit is constrained with constant power charge, (14) for pumped storage charging and discharging state,
(15) pumped storage operation energy constraint is represented；Constraint (16)-(17) are pumped storage plan constraint, and (16) characterize
Pump-storage generator quantity equality constraint, (17) constrain for hydroenergy storage station energy capacity, and (18) represent that the 0-1 in model becomes
Amount.Wherein,Respectively power station i units k periods t electric discharge, charge power；Respectively
For power station i unit k periods t electric discharge, charged state；βPS, i, kTo characterize the 0-1 variables of power station i units k planning state, 1 is
The unit participates in planning, otherwise is not involved in；EPS, i(t), EPS, i(t-1) hydroenergy storage station t is represented respectively, the t-1 periods
Energy, EPS, i(T),Represent that operation simulates the energy of last period and runs the primary power before simulation respectively.The respectively efficiency for charge-discharge of pump-storage generator；En0Represent power station i pump-up power station energy initial values；QPS, i,Respectively
The unit number of units and energy capacity planned for power station i,The unit number of units and energy that respectively power station i can be planned are held
Measure higher limit.(9) (10) constrain intermediate variable by large M, and M is a constant ensured more than intermediate variable.
(3) thermal power unit operation constrains
Constrain (19)-(22) to constrain for thermal power unit operation, (19) constrain for fired power generating unit output bound, and (20) are fire
The minimum continuous start and stop time-constrain of group of motors, (21) are fired power generating unit climbing upper limit constraint, and (22) are that fired power generating unit maximum opens
Stop power constraint.U in formulaI, tTo represent 0-1 variable of the node i unit in t open state, 0 is that shutdown 1 is start；For node i unit minimum respectively, EIAJ limitation；PG, i, tContributed for node i unit t；For unit i
Minimum continuous available machine time limits value；The minimum continuous downtime limits values of unit i；To climb on node i unit
Rate；For climbing rate under node i unit；For the maximum shutdown power of node i unit；For the maximum start power of point i units.
(4) circuit operation constraint is sent outside
Energy Base Transmission Corridor often takes the strong HVDC Transmission Technology of conveying capacity.DC power transmission line is run at present
Take and determine Power operation mode and can not frequently change, simplify to be thought of as sending the circuit method of operation outside in modeling herein and exist
Switch between limited several operational modes.DC line is sent outside at formula (23)-(24) constraint t node i operates in a kind of operation
Under pattern, and transmission power is specified transmission power under the pattern.In formula：uLn k.m, i, tRun for t i-node circuit m
Mode state (decision variable)；PMode.m, iFor transmission power under m operational modes.
(5) simulation system constraint is run
Except energy-storage system, fired power generating unit, send circuit outside in addition to, also need to during system operation simulation consider rack constraint, system
Power-balance constraint, spinning reserve constraint.Constrain (25)-(27) to constrain for system operation simulation, wherein (25) represent node work(
Rate Constraints of Equilibrium, (26) constrain for spinning reserve, and (27) constrain for Line Flow.Wherein, PBS, m, tStored up for period t unit m battery
The power output of energy, PPS, i, tFor the power output of period t unit i water-storage, FL, tRepresent defeated on the 1st article of circuit of period t
Send power, Fl maxFor the transmission power upper limit of circuit 1, θN, tRepresent the phase angle of node n periods t.Respectively
For fired power generating unit, Wind turbines, battery energy storage, water-storage, the node incidence matrix for sending circuit outside,Closed for node line
Join matrix.
Step 3：Build solving model
According to electrical network parameter, energy storage parameter and the energy storage plan model simulated based on operation, solving model is built, setting is asked
Solve the max calculation time of model and allow calculation error.
Step 4：Scene setting and energy storage alternate node are chosen
For water-storage, because waterpower resourses and geographical position limit, the basis first in Pumped Storage Power Station Construction
The prospecting of Ministry of Water Resources determine can installation location be alternate node., in theory can be in office and battery energy storage then limits without geographical position
Configured at meaning node, but in physical planning, layouting for energy storage is often limited, therefore the present invention is identified by solving model
The larger node of average energy storage demand alternately node under each scene.The specific setting of scene is as follows：
1st, according to Seasonal Characteristics scene set, i.e., the corresponding scene of typical day under each season.Under Various Seasonal
Load, new energy power curve difference are larger, suffer from this, Line Flow can significantly change, thus Various Seasonal, same node
Energy storage demand also likely to be present obvious difference.
2nd, according to battery energy storage costScene set, i.e., each corresponding scene of Battery pack energy storage cost.Existing rank
Section, battery energy storage technology should consider the perspective of battery energy storage technology, also to examine still in Rapid development stage, battery planning
Consider the higher actuality of cost at this stage.Therefore it is necessary the different scene sets according to energy storage cost.The cost of water-storage becomes
Change is smaller, therefore extra scene setting is done not based on it.
3rd, foundation abandons wind penalty coefficient kwScene set, i.e., each abandon the corresponding scene of value of wind penalty coefficient.Examine
Consider the strategic requirement for promoting wind electricity digestion at present, examined in the object function of energy storage plan model of the present invention based on operation simulation
Consider and abandoned wind punishment, the size for abandoning wind penalty coefficient reflects policymaker for sacrificing fired power generating unit economy to promote new energy
The preference of consumption, and different wind penalty coefficients of abandoning obviously has an impact to the constant volume of layouting of energy storage planning.
Typical day, battery energy storage cost are changed successively, wind penalty coefficient is abandoned and can obtain a series of scenes, to each field of each node
Battery energy storage takes average under scape, the preceding N maximum according to averageoIndividual node is as battery energy storage alternate node.
Step 5：Calculate energy storage demand and compare YrateAnd annual equivalent maximum energy storage demand day
For the energy storage demand under comprehensive wind-powered electricity generation annual more seasons, the present invention proposes energy storage demand and compares YrateIt is and annual equivalent
Maximum energy storage demand dayTwo indexs.Load and wind-powered electricity generation difference between winter or summer are maximum in power system, with winter or summer
Exemplified by two typical days, the solving model built using step 3 calculates the energy storage investment of winter or summer typical case's day respectivelyWith
The energy storage aggregate demand that energy storage investment reflected under the season, the business of the two is energy storage demand ratio.Larger winter, summer are invested with energy storage
Typical case season, N days1, Ns2As maximum energy storage demand day, then annual equivalent maximum energy storage demand dayIt can be counted according to formula (29)
Calculate.
Step 6：Battery energy storage cost of the renewal conversion to dayWater-storage cost
The annual equivalent maximum energy storage demand day that will be obtainedN in alternate form (1)d, the battery energy storage after being updated
CostWater-storage costThe N that will be chosen simultaneously in step 4oInput of the individual alternate node as battery energy storage
Condition.The solving model that input parameter after renewal is brought into step 3 carries out simulation calculation, and acquired results are as finally layouted
Constant volume scheme.
Embodiment 1
The embodiment of the present invention 1 is to be based on improved IEEE14 node systems, and electrical network parameter keeps constant, but on this basis
Two typhoon group of motors are added in system.Battery energy storage, the class energy storage of water-storage two are included in simultaneity factor.Including following step
Suddenly：
1st, electrical network parameter and energy storage parameter are obtained.The node systems of IEEE 14 include 14 nodes, 6 conventional power units, 20
Branch road, its electrical network parameter：Generator parameter, system loading parameter, branch parameters are as shown in Table 1 to Table 3.Circuit-node association
Matrix A is by start node, terminal node serial number gencration, line admittance b in table 3lFor the inverse of branch impedance in table 3.Circuit is defeated
Send capacity Pl maxIt is shown in Table 3.Spinning reserve ratio R is set to 0.05.Selected No. 11 nodes are that system wind-powered electricity generation sends line node outside, are sent outside
Circuit is DC line, and setting DC line is sent outside with two kinds of output-constant operation patterns of 90MW, 180M.
Wherein, all fired power generating unit sums and output bound, and its minimum continuously open, 1 are shown in Table between the stopping time, fired power generating unit
Creep speed is 1% EIAJ/min, and maximum start and stop power is set to thermal power output lower limit, and unit initial operating state is out
Machine, initial operating time 24h；
4 and No. 11 nodes access 200MW wind-powered electricity generations, abandon wind penalty coefficient according to different scenes need choose 200 respectively
Member/MWh or 400 yuan/MWh, interregional transmission of electricity economic parameters is that circuit sends income coefficient k outsideoFor 340 yuan/MWh.
The node system unit parameters of table 1IEEE 14
The system loading parameter of table 2 (static peak load)
| Node | Load/MW | Node | Load/MW |
| 1 | 0 | 8 | 0 |
| 2 | 54.25 | 9 | 73.75 |
| 3 | 235.5 | 10 | 22.5 |
| 4 | 119.5 | 11 | 8.75 |
| 5 | 19 | 12 | 15.25 |
| 6 | 28 | 13 | 33.75 |
| 7 | 0 | 14 | 37.25 |
The system branch parameter of table 3
Assuming that each node load characteristic keeps identical variation tendency in system, i.e., it is bent using unified perunit load power
Line, as shown in Fig. 2 (a) and Fig. 3 (a), actual load power then is multiplied to obtain using each node peak power with per-unit curve.
Wind power plant perunit power curve is contributed by after the wind energy turbine set installed capacity standardization using certain regional wind power plant of NORTHWEST CHINA is actual
Obtain, as shown in Fig. 2 (b) and Fig. 3 (b).
In engineering practice, because waterpower resourses and geographical position limit, reconnoitred first in Pumped Storage Power Station Construction really
Surely can installation location intend access node, therefore assume in the system of embodiment 1 to have selected Construction of Pumped Storage Power Station access
Node is No. 7 nodes.
Unit power cost, the unit energy cost of battery energy storageThe discharge and recharge effect plug of battery energy storageSuch as
Shown in table 4；Battery energy storage rating unit power is 5MW, and the maximum continuous discharge and recharge time is 3h, and energy-storage units plan transformation
For 4.
Unit power cost, the unit energy cost of pumped storageThe efficiency for charge-discharge of pumped storageAs shown in table 4,
Pump-storage generator rated capacity is set as 20MW, and because storage capacity limits, the energy capacity upper limit is set as 160MWh.Each node draws water
Storage Unit planning transformation is 4.
The different energy storage technology parameters of table 4
5 different input conditions of table correspond to scene
2nd, according to electrical network parameter, energy storage parameter and the energy storage plan model simulated based on operation, solving model is built, is set
The max calculation time of solving model is 10h and allows calculation error 0.1%.
3rd, typical day, battery energy storage cost are changed successively, wind penalty coefficient is abandoned and can obtain a series of scenes, as shown in table 5.
4th, average is taken to battery planning stored energy capacitance under each scene of each node, selects the section that energy storage average is more than threshold value 3MW
Point is used as battery energy storage alternate node.Therefore finally give battery energy storage alternate node and be：Node 11, node 4, node 3, node
10。
The energy storage alternate node that table 6 is chosen according to energy storage average
| Node serial number | 11 | 4 | 3 | 10 |
| Energy storage average/MW | 13.1 | 6.3 | 4.4 | 3.1 |
5th, the configuration energy storage total cost under each scene is calculated, and the energy storage demand for calculating winter or summer typical case's day compares YrateAnd
Annual equivalent maximum energy storage demand dayIt is as shown in table 7 that each input condition corresponds to winter, summer energy storage demand ratio and its average, according to
Annual equivalent maximum energy storage demand day is obtained according to formula (29)For 260 days.
7 different input conditions of table correspond to winter, summer energy storage demand ratio
| Classification | The scene 2 of scene 1/ | The scene 4 of scene 3/ | The scene 6 of scene 5/ | The scene 8 of scene 7/ | Average |
| Energy storage demand ratio | 2.1 | 2.1 | 2.3 | 2.5 | 2.25 |
6th, with annual equivalent maximum energy storage demand dayN in alternate form (1)dTo update day conversion cost of investment, simultaneously
Input condition using the alternate node chosen in 3 as battery energy storage.The parameter after renewal is brought into emulation platform to be calculated,
Acquired results are as finally layouted constant volume scheme.By low energy storage cost, wind penalty coefficient is abandoned exemplified by 200 yuan/MWh, to layout and determining
Appearance scheme is as shown in table 8.System conditions before and after energy storage configures are contrasted, operation curve is as shown in figure 4,14 before energy storage configuration
Period abandons wind, and abandons wind power peak close to 140MW；Meanwhile send that line efficiency is low, and only 9 periods reach specified outside
Send power outside.Fig. 5 is that the operation curve that postpones is matched somebody with somebody in energy storage, abandons the wind period, abandons wind peak value and substantially reduce, while sends circuit profit outside
Lifted with rate.General expenses contrast is shown in Table 9 before and after energy storage planning.
Table 8 integrates the programme of winter or summer section characteristic
General expenses before and after the energy storage of table 9 planning
| Expense/ten thousand yuan | Operating cost | Abandon wind | Battery | Pumped storage | Send outside | Always |
| There is energy storage | 89.9 | 5.0 | 7.7 | 3.8 | -119 | -12.9 |
| Without energy storage | 123.2 | 13.6 | 0 | 0 | -97.9 | 38.8 |
Embodiment 2
The embodiment of the present invention 2 is to be based on improved IEEE39 node systems, and electrical network parameter keeps constant, but on this basis
Two typhoon group of motors are added in system.Battery energy storage, the class energy storage of water-storage two are included in simultaneity factor.Including following step
Suddenly：
1st, electrical network parameter and energy storage parameter are obtained.The node systems of IEEE 39 include 39 nodes, 7 conventional power units, 3
Wind turbines, 46 branch roads, its electrical network parameter：Generator parameter, system loading parameter, the branch parameters such as institute of 10~table of table 12
Show.Circuit-node incidence matrix A is by start node, terminal node serial number gencration, line admittance b in table 12lFor branch road in table 12
The inverse of impedance.Circuit transmission capacity Fl maxIt is shown in Table 12.Spinning reserve ratio R is set to 0.05.It is system wind to select No. 11 nodes
Electricity sends line node outside, and it is DC line to send circuit outside, and setting DC line is with two kinds of output-constant operation patterns of 320MW, 640M
Send outside.
Wherein, all fired power generating unit sums and output bound, and its minimum continuously open, 10 are shown in Table between the stopping time, thermal motor
Group creep speed is 1% EIAJ/min, and maximum start and stop power is set to thermal power output lower limit, and unit initial operating state is
Start, initial operating time 24h；
4 and No. 11, No. 18 nodes access 600MW wind-powered electricity generations, abandon wind penalty coefficient needs to select respectively according to different scenes
200 yuan/MWh or 400 yuan/MWh is taken, interregional transmission of electricity economic parameters is that circuit sends income coefficient k outsideoFor 340 yuan/MWh.
The node system unit parameters of table 10IEEE 39
The system branch parameter of table 11
The system loading parameter of table 12 (static peak load)
| Node | Load/MW | Node | Load/MW |
| 1 | 97.6 | 18 | 158 |
| 3 | 322 | 21 | 274 |
| 7 | 235.8 | 25 | 224 |
| 9 | 6.5 | 26 | 139 |
| 12 | 8.53 | 27 | 281 |
| 15 | 320 | 31 | 9.2 |
| 16 | 329 | —— | —— |
Load perunit power curve, wind power plant perunit power curve such as Fig. 2 (a) under winter, summer typical case's day, Fig. 2 (b), Fig. 3
(a), shown in Fig. 3 (b).
In engineering practice, because waterpower resourses and geographical position limit, reconnoitred first in Pumped Storage Power Station Construction really
Surely can installation location intend access node, therefore assume in the system of embodiment 2 to have selected Construction of Pumped Storage Power Station access
Node is 7, No. 32 nodes.
Unit power cost, the unit energy cost of battery energy storageThe efficiency for charge-discharge of battery energy storageSuch as
Shown in table 4；Battery energy storage rating unit power is 5MW, and the maximum continuous discharge and recharge time is 3h, and energy-storage units plan transformation
For 8.
Unit power cost, the unit energy cost of pumped storageThe efficiency for charge-discharge of pumped storageAs shown in table 4,
Pump-storage generator rated capacity is set as 50MW, and because storage capacity limits, the energy capacity upper limit is set as 400MWh.Each node draws water
Storage Unit planning transformation is 4.
2nd, according to electrical network parameter, energy storage parameter and the energy storage plan model simulated based on operation, solving model is built, is set
The max calculation time of solving model is 10h and allows calculation error 0.1%.
3rd, typical day, battery energy storage cost are changed successively, wind penalty coefficient is abandoned and can obtain a series of scenes, and scene setting is same
Table 5.
4th, average is taken to battery planning stored energy capacitance under each scene of each node, selects node of the average more than 3MW as electricity
Pond energy storage alternate node.Therefore finally give battery energy storage alternate node and be：Node 37, node 25, node 30, node 2.
The energy storage alternate node that table 13 is chosen according to energy storage average
5th, the configuration energy storage total cost under each scene, and the energy storage demand for calculating winter or summer typical case's day compares YrateIt is and annual
Equivalent maximum energy storage demand dayIt is as shown in table 14 that input condition corresponds to winter, summer energy storage demand ratio and its average, according to formula
(29) annual equivalent maximum energy storage demand day is obtainedFor 273 days.
14 different input conditions of table correspond to winter, summer energy storage demand ratio
| Classification | The scene 2 of scene 1/ | The scene 4 of scene 3/ | The scene 6 of scene 5/ | The scene 8 of scene 7/ | Average |
| Energy storage demand ratio | 2.1 | 2.1 | 2.2 | 1.5 | 2.0 |
6th, with annual equivalent maximum energy storage demand dayN in alternate form (1)dTo update day conversion cost of investment, simultaneously
Input condition using the alternate node chosen in 3 as battery energy storage.Undated parameter brings emulation platform calculating into, produces final rule
The scheme of drawing.By low energy storage cost, wind penalty coefficient is abandoned as exemplified by 200 yuan/MWh, constant volume scheme of layouting is as shown in Table 15.Contrast storage
Can system conditions before and after configuration, operation curve before energy storage configuration is as shown in fig. 6, hop count when abandoning wind, abandon wind power peak point
Wei not 8,600MW；Meanwhile send that line efficiency is low, and only 14 periods reach specified and send power outside outside.Fig. 7 configures for energy storage
Operation curve afterwards, the wind period is abandoned, wind peak value is abandoned and substantially reduces, while send line efficiency lifting outside.Before and after energy storage planning
General expenses contrast is shown in Table 16.
Table 15 integrates the programme of winter or summer section characteristic
General expenses before and after the energy storage of table 16 planning
| Expense/ten thousand yuan | Operating cost | Abandon wind | Battery | Pumped storage | Send outside | Always |
| There is energy storage | 719.6 | 0 | 22.1 | 54.4 | -413.4 | 382.7 |
| Without energy storage | 887.6 | 51.5 | 0 | 0 | -413.4 | 525.6 |
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (4)
- A kind of constant volume method 1. energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation is layouted, it is characterised in that including：(1) electrical network parameter and energy storage parameter are obtained, with operating cost, energy storage investment, abandon wind punishment, to send cost sum outside minimum Object function, constrained with battery energy storage system, pumped storage constrains, thermal power unit operation constrains, sends circuit operation outside about Beam and operation simulation system are constrained to constraints, establish the energy storage plan model based on operation simulation；(2) according to electrical network parameter, energy storage parameter and the energy storage plan model simulated based on operation, solving model is built；(3) typical day, battery energy storage cost are changed successively, wind penalty coefficient is abandoned and obtains a series of scenes, to each scene of each node Lower battery energy storage takes average, the maximum preceding N of averageoIndividual node be battery energy storage alternate node, the alternate node of water-storage For installation location；(4) obtain the energy storage investment of typical case's day winter using solving model and the energy storage of typical case's day summer is invested, typical case's day winter Energy storage investment and the business of the energy storage investment of typical case's day summer be energy storage demand ratio, energy storage invests larger typical day as maximum storage Energy demand day, annual equivalent maximum energy storage demand day is obtained using energy storage demand ratio；(5) the energy storage plan model simulated using annual equivalent maximum energy storage demand day renewal based on operation, after being updated Battery energy storage cost and water-storage cost, based on solving model, according to the alternate node of battery energy storage, water-storage it is alternative Battery energy storage cost and water-storage cost after node, renewal, constant volume scheme of finally being layouted.
- The constant volume method 2. a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation as claimed in claim 1 is layouted, its feature exist In the electrical network parameter includes：Fired power generating unit economic parameters, Wind turbines economic parameters, interregional transmission of electricity economic parameters, system Technical parameter and thermoelectricity technical parameter, and the power data P of the wind-powered electricity generation of winter or summer typical case's day and loadW, i, t,Systems technology parameter includes：Circuit-node incidence matrix A, line admittance bl, send circuit nominal operation power outsideLine Road transmission capacity Fl max, system is the reserved spinning reserve ratio R of reply unit failure；Thermoelectricity technical parameter includes：Fired power generating unit sum Ng, each fired power generating unit i output upper and lower limit Pi max、Pi min, it is upper and lower to climb Slope speedMaximum opens, stops powerMinimum continuously opens, downtime Ti U, Ti D, unit initial operating state and Initial operating timeTi 0；Fired power generating unit economic parameters is operating cost conic section parameter ai, bi, ci, Wind turbines economic parameters is to abandon wind punishment Coefficient kw, interregional transmission of electricity economic parameters is that circuit sends income coefficient k outsideo。
- The constant volume method 3. a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation as claimed in claim 1 or 2 is layouted, its feature It is, the energy storage parameter includes technical parameter and economic parameters, the technical parameter of water-storage and economic ginseng of battery energy storage Number, the technical parameter and economic parameters of battery energy storage include：Battery energy storage plans alternate node number Ns, the specific work of battery energy storage Rate cost, unit energy costThe efficiency for charge-discharge of battery energy storageThe rating unit power of battery energy storageBy rated power maximum continuous discharge and recharge time H, each node battery energy storage unit plans transformationDraw water storage The technical parameter and economic parameters of energy include：Pumped storage planning alternate node number Np, the unit power cost of pumped storage, unit energy into ThisThe efficiency for charge-discharge of pumped storageThe rated power of pump-storage generatorEach node pumped-storage units Plan transformation
- The constant volume method 4. a kind of energy storage of the annual more Seasonal Characteristics of comprehensive wind-powered electricity generation as claimed in claim 3 is layouted, its feature exist In the object function is：Min Ψ=Cgen+Cstr+Cwin-Cout,Wherein, CgenRepresent operating cost, CstrRepresent energy storage investment, CwinWind punishment, c are abandoned in expressionoutCircuit receipts are sent in expression outside Benefit ,-CoutCost is sent in expression outside,<mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mrow> <msub> <mi>C</mi> <mrow> <mi>s</mi> <mi>t</mi> <mi>r</mi> </mrow> </msub> <mo>=</mo> <munderover> <mo>&Sigma;</mo> <mi>i</mi> <msub> <mi>N</mi> <mi>p</mi> </msub> </munderover> <mrow> <mo>(</mo> <msubsup> <mi>k</mi> <mi>s</mi> <mi>p</mi> </msubsup> <msubsup> <mi>P</mi> <mrow> <mi>B</mi> <mi>S</mi> <mo>,</mo> <mi>m</mi> </mrow> <mrow> <mi>r</mi> <mi>a</mi> <mi>t</mi> <mi>e</mi> </mrow> </msubsup> <mo>+</mo> <msubsup> <mi>k</mi> <mi>s</mi> 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</msubsup> <mo>=</mo> <msubsup> <mi>C</mi> <mi>p</mi> <mi>p</mi> </msubsup> <mo>&CenterDot;</mo> <mfrac> <mrow> <mi>&delta;</mi> <mo>&CenterDot;</mo> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>&delta;</mi> <mo>)</mo> </mrow> <mrow> <msub> <mi>YR</mi> <mi>p</mi> </msub> </mrow> </msup> </mrow> <mrow> <msup> <mrow> <mo>(</mo> <mn>1</mn> <mo>+</mo> <mi>&delta;</mi> <mo>)</mo> </mrow> <mrow> <msub> <mi>YR</mi> <mi>p</mi> </msub> </mrow> </msup> <mo>-</mo> <mn>1</mn> </mrow> </mfrac> <mo>&CenterDot;</mo> <mfrac> <mn>1</mn> <msub> <mi>N</mi> <mi>d</mi> </msub> </mfrac> </mrow> </mtd> </mtr> </mtable> </mfenced>Wherein, T be operation simulation it is total when hop count, Np, Ns, Nc, respectively hydroenergy storage station, battery energy storage power station, thermal motor Group sum,Output and operating cost during respectively unit i period t；SPt wWind total amount is abandoned for the t periods；PLn k, t The t periods send power outside；The respectively power capacity of m platforms battery energy storage power station planning, energy capacity； EEPS, iFor i-th hydroenergy storage station energy capacity, QPS, iFor the pump-storage generator number of i-th hydroenergy storage station, For the rated power of pump-storage generator, koIncome coefficient is sent in expression outside, and δ represents discount rate, YRsRepresent the battery energy storage life-cycle Cycle, YRpRepresent water-storage life cycle management, NdRepresent that annual energy storage is equivalent and utilize number of days,Respectively battery energy storage Unit power cost, cost of energyThe battery energy storage cost to day is converted according to its life cycle management,Respectively For the unit power cost of pumped storage, cost of energyAccording to the water-storage cost of its life cycle management conversion to day.
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| CN201710974712.7A CN107732949B (en) | 2017-10-17 | 2017-10-17 | Energy storage, distribution and constant volume method integrating multi-season characteristics of wind power all year round |
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| Publication Number | Publication Date |
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| CN108648096A (en) * | 2018-04-06 | 2018-10-12 | 东北电力大学 | A kind of hydroenergy storage station method for planning capacity based on overall life cycle cost theory |
| CN109347127A (en) * | 2018-10-27 | 2019-02-15 | 华中科技大学 | A kind of energy storage Optimal Configuration Method for coping with block supply line fault |
| CN109687423A (en) * | 2018-12-29 | 2019-04-26 | 华中科技大学 | A kind of energy storage configuration method of DC grid |
| CN110970912A (en) * | 2019-12-09 | 2020-04-07 | 国网新疆电力有限公司 | Operation simulation method for new energy power system containing energy storage |
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