CN108694483A - Consider integrated energy system lectotype selection and the method for planning capacity of the coupling of electric heating gas - Google Patents
Consider integrated energy system lectotype selection and the method for planning capacity of the coupling of electric heating gas Download PDFInfo
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Abstract
A kind of integrated energy system lectotype selection and method for planning capacity considering that electric heating gas couples:According to the device category that garden integrated energy system is to be selected, the relevant parameter of all devices is inputted;According to the parameter of input, the model of integrated energy system lectotype selection and capacity planning is established, including:With the minimum object function of system year comprehensive cost, various energy transition equipment models and corresponding operation constraint are established, considers integrated energy system power-balance constraint;According to obtained integrated energy system lectotype selection and capacity planning model, and based on electricity, heat, the historical data of refrigeration duty in garden, it using mixed integer linear programming method, is solved, obtains lectotype selection and capacity planning scheme, year comprehensive cost and electricity, gas Year's consumption.Gained programme of the invention can significantly reduce the year comprehensive cost of system, and realization is provided multiple forms of energy to complement each other, and energy utilization rate is improved.
Description
Technical field
The present invention relates to a kind of integrated energy system lectotype selection and method for planning capacity.More particularly to a kind of consideration electricity
The integrated energy system lectotype selection of hot gas coupling and method for planning capacity.
Background technology
As people increasingly pay close attention to energy and environmental problem, how to improve efficiency of energy utilization and reduce as far as possible and use
The environmental pollution that energy process is brought, it has also become the important topic of domestic extensive concern.Integrated energy system collection refrigeration, heat supply and hair
Electricity not only can improve primary energy ratio, but also also showed in terms of reducing discharge in one by cascaded utilization of energy
Go out great advantage.Therefore, integrated energy system has been the important trend of future source of energy technology, planning and operation problem
Have become research hotspot.And integrated energy system can efficiently, economic, environmental protection operation, the equipment for depending on comprehensive energy station
Type selecting and capacity planning.
It is existing about lectotype selection and the research of capacity planning, it is general optimal (such as using operation simulation target of preferably sening as an envoy to
Economy is best, discharge minimum etc.) comprehensive energy device type and capacity combination.In terms of device type, cogeneration
(combined heat andpower, CHP) unit can meet heat and electricity demanding simultaneously;Heat pump has energy conversion efficiency high
Feature becomes important energy transition equipment.In terms of Optimized model and algorithm, sex work such as bilevel optimization planning mould is represented
Type, outer layer model are place capacity combinatorial optimization problem, and internal layer algorithm is running optimizatin analog approach operating cost;The choosing of algorithm
The feature depending on plan model is selected, mathematical programming approach and intelligent optimization algorithm are extensive in integrated energy system project study
Using.
However, still lack detailed analysis and the modeling to electric heating gas coupled system both at home and abroad at present, the energy coupling of consideration
Device category is less.In optimized variable, does not consider the Combinatorial Optimization of device type and place capacity simultaneously, often determine
Device type only carries out capacity optimization on this basis.In addition, coupling of the existing research between the energy considers insufficient, the energy
Between Coupling Analysis focus mostly in qualitative discussion, by multipotency when lacking quantitative analysis, and then being difficult to accurate evaluation system operation
The complementary benefit that strap comes.Therefore, it is badly in need of a kind of integrated energy system lectotype selection and capacity rule considering that electric heating gas couples
The method of drawing.
Invention content
The technical problem to be solved by the invention is to provide one kind capable of rationally determining comprehensive energy station equipment type selecting and appearance
The integrated energy system lectotype selection of the considerations of gauge is drawn electric heating gas coupling and method for planning capacity.
The technical solution adopted in the present invention is:A kind of integrated energy system lectotype selection and appearance considering that electric heating gas couples
Planing method is measured, is included the following steps:
1) according to garden integrated energy system device category to be selected, the relevant parameter of all devices is inputted, including each
Initial outlay cost, maintenance cost and the transformation efficiency of equipment unit capacity, cold in input electricity price, Gas Prices and garden,
The year operation data of optimized distributionl;
2) parameter according to the input in step 1), establishes the model of integrated energy system lectotype selection and capacity planning,
Including:With the minimum object function of system year comprehensive cost, various energy transition equipment models and corresponding operation constraint are established,
Consider integrated energy system power-balance constraint;
3) the integrated energy system lectotype selection obtained according to step 2) and capacity planning model, and based on electricity in garden,
Heat, the historical data of refrigeration duty are solved using mixed integer linear programming method, obtain lectotype selection and capacity planning
Scheme, year comprehensive cost and electricity, gas Year's consumption.
Various energy transition equipment models and corresponding operation constraint described in step 2) include:
(1) electric boiler plan model and constraint:
In formula,It is the thermal power of t moment electric boiler,It is t moment electric boiler input terminal electrical power, ηEBIt is electric-thermal
Transformation efficiency, pCAP, EBIt is electric boiler minimum planning unit, xEBIt is the quantity of corresponding minimum planning unit;
(2) electrical chillers plan model and constraint:
In formula,It is the cold power of t moment electrical chillers,It is t moment electrical chillers input terminal electrical power,
EACIt is Energy Efficiency Ratio, pCAP, ACIt is electrical chillers minimum planning unit, xACIt is the quantity of corresponding minimum planning unit;
(3) earth source heat pump plan model and constraint:
In formula,It is the thermal power of t moment earth source heat pump,It is the cold power of t moment earth source heat pump,When being t
Carve earth source heat pump input terminal electrical power, EH, HPIt is electric heating energy efficiency ratio, EC, HPIt is electric refrigeration efficiency ratio, pCAP, HPBe earth source heat pump most
Small planning unit, xHPIt is the quantity of corresponding minimum planning unit;
(4) cogeneration units plan model and constraint:
In formula,It is the thermal power of t moment cogeneration units,It is the electrical power of t moment cogeneration units,It is t moment cogeneration units input terminal power, ηH, CHPAnd ηP, CHPBe respectively gas-thermal transition efficiency it is gentle-electrotransformation effect
Rate, pCAP, CHPIt is cogeneration units minimum planning unit, xCHPIt is the quantity of corresponding minimum planning unit.
Consideration integrated energy system power-balance constraint described in step 2) includes:
(1) electrical power Constraints of Equilibrium:
In formula,It is electric load in t moment garden,It is the t moment power grid work(that electric load provides into garden
Rate,It is the electrical power of t moment cogeneration units;
(2) heating power balance constrains:
In formula,It is thermic load in t moment garden,It is the thermal power of t moment electric boiler,It is t moment heat
The thermal power of unit is produced in Electricity Federation,Thermal power during being the heating of t moment earth source heat pump;
(3) cold power-balance constraint:
In formula,It is refrigeration duty in t moment garden,It is the cold power of t moment electrical chillers,It is t moment
Cold power during earth source heat pump refrigeration.
The integrated energy system lectotype selection for considering the coupling of electric heating gas of the present invention and method for planning capacity are for synthesis
Energy source station lectotype selection and capacity planning issues establish the comprehensive energy station equipment type selecting for considering the various energy resources forms such as electric heating gas
And capacity planning model, consider equipment investment and operating cost, rationally determines comprehensive energy station equipment type selecting and capacity planning side
Case.The present invention considers the coupling between the energy, energy form and device type compared with horn of plenty, and can meet simultaneously it is hot and cold,
The needs of a variety of loads of electricity;The Combinatorial Optimization for considering device type and place capacity simultaneously in optimization calculates, gives difference
Program results under scene, and quantitative analysis, the year that gained programme can significantly reduce system are comprehensive in turn for comparative analysis
Conjunction expense, realization are provided multiple forms of energy to complement each other, and energy utilization rate is improved.
Description of the drawings
Fig. 1 is that the present invention considers the integrated energy system lectotype selection of electric heating gas coupling and the flow of method for planning capacity
Figure;
Fig. 2 is integrated energy system garden year electric load curve;
Fig. 3 is integrated energy system garden year thermic load curve;
Fig. 4 is integrated energy system garden year refrigeration duty curve.
Specific implementation mode
With reference to embodiment and attached drawing to the present invention consider electric heating gas coupling integrated energy system lectotype selection and
Method for planning capacity is described in detail.
The integrated energy system lectotype selection for considering the coupling of electric heating gas of the present invention and method for planning capacity, based on solution
The determination of the type selecting of equipment and corresponding capacity, establishes with the minimum object function of year comprehensive cost, fills in integrated energy system
Divide the operation constraint for considering the various energy transition equipments of integrated energy system and power-balance constraint, using MIXED INTEGER linear gauge
The method of drawing is solved, and lectotype selection result and capacity planning scheme are finally obtained.
As shown in Figure 1, the integrated energy system lectotype selection for considering the coupling of electric heating gas of the present invention and method for planning capacity,
Include the following steps:
1) according to garden integrated energy system device category to be selected, the relevant parameter of all devices is inputted, including each
Initial outlay cost, maintenance cost and the transformation efficiency of equipment unit capacity, cold in input electricity price, Gas Prices and garden,
The year operation data of optimized distributionl, as shown in Figure 2, Figure 3, Figure 4;
2) parameter according to the input in step 1), establishes the model of integrated energy system lectotype selection and capacity planning,
Including:With the minimum object function of system year comprehensive cost, various energy transition equipment models and corresponding operation constraint are established,
Consider integrated energy system power-balance constraint;Wherein,
(1) the minimum object function C of system year comprehensive cost described inCOSTIt is represented by
minCCOST=CINV+CMNT+COPE (1)
In formula, initial outlay expense CINV, maintenance cost CMNT, operating cost COPEIt can be expressed from the next respectively:
In formula, y indicates the service life of equipment, and r is discount rate;cINV, CHP,cINV, EB,cINV, AC,cINV, HPIt is thermoelectricity respectively
The specific investment cost cost of coproduction (CHP) unit, electric boiler, electrical chillers and earth source heat pump;pCAP, CHP,pCAP, EB,pCAP, AC,
pCAP, HPIt is the minimum planning unit of CHP, electric boiler, electrical chillers and earth source heat pump, x respectivelyCHP,xEB,xAC,xHPIt is respectively
The quantity of corresponding minimum planning unit.
In formula, cMNT, CHP,cMNT, EB,cMNT, AC,cMNT, HPIt is CHP, electric boiler, electrical chillers and earth source heat pump respectively
Organizational maintenance expense,It is the heat and electrical power, electricity of t moment CHP units respectively
The hot and cold power of the thermal power of boiler, the cold power of electrical chillers, earth source heat pump.
COPE=CGRID+CFUEL (4)
In formula, CGRIDAnd CFUELThe respectively power purchase expense of system and purchase gas expense is used;Respectively
Electrical power needed for electric load provides into garden for t moment power grid power, electric boiler, the electric work needed for electrical chillers
Electrical power needed for rate and earth source heat pump,For the electricity price of t moment;For t moment CHP input terminal power, cFUELIt is natural
Gas price lattice.
(2) various energy transition equipment models and corresponding operation constraint described in include:
(2.1) electric boiler plan model and constraint:
In formula,It is the thermal power of t moment electric boiler,It is t moment electric boiler input terminal electrical power, ηEBIt is electric-thermal
Transformation efficiency, pCAP, EBIt is electric boiler minimum planning unit, xEBIt is the quantity of corresponding minimum planning unit;
(2.2) electrical chillers plan model and constraint:
In formula,It is the cold power of t moment electrical chillers,It is t moment electrical chillers input terminal electrical power,
EACIt is Energy Efficiency Ratio, pCAP, ACIt is electrical chillers minimum planning unit, xACIt is the quantity of corresponding minimum planning unit;
(2.3) earth source heat pump plan model and constraint:
In formula,It is the thermal power of t moment earth source heat pump,It is the cold power of t moment earth source heat pump,When being t
Carve earth source heat pump input terminal electrical power, EH, HPIt is electric heating energy efficiency ratio, EC, HPIt is electric refrigeration efficiency ratio, pCAP, HPBe earth source heat pump most
Small planning unit, xHPIt is the quantity of corresponding minimum planning unit;
(2.4) cogeneration of heat and power (CHP) unit plan model and constraint:
In formula,It is the thermal power of t moment cogeneration units,It is the electrical power of t moment cogeneration units,It is t moment cogeneration units input terminal power, ηH, CHPAnd ηP, CHPBe respectively gas-thermal transition efficiency it is gentle-electrotransformation effect
Rate, pCAP, CHPIt is cogeneration units minimum planning unit, xCHPIt is the quantity of corresponding minimum planning unit.
(3) the consideration integrated energy system power-balance constraint described in includes:
(3.1) electrical power Constraints of Equilibrium:
In formula,It is electric load in t moment garden,It is the t moment power grid work(that electric load provides into garden
Rate,It is the electrical power of t moment cogeneration units;
(3.2) heating power balance constrains:
In formula,It is thermic load in t moment garden,It is the thermal power of t moment electric boiler,It is t moment heat
The thermal power of unit is produced in Electricity Federation,Thermal power during being the heating of t moment earth source heat pump;
(3.3) cold power-balance constraint:
In formula,It is refrigeration duty in t moment garden,It is the cold power of t moment electrical chillers,It is t moment
Cold power during earth source heat pump refrigeration.
3) the integrated energy system lectotype selection obtained according to step 2) and capacity planning model, and based on electricity in garden,
Heat, the historical data of refrigeration duty are solved using mixed integer linear programming method, obtain lectotype selection and capacity planning
Scheme, year comprehensive cost and electricity, gas Year's consumption.
It is object that the embodiment of the present invention, which chooses certain integrated energy system garden, first according to equipment kind in integrated energy system
Class, input equipment parameter include initial outlay cost, maintenance cost and the transformation efficiency of each equipment unit capacity, electricity price with
Gas Prices parameter, as shown in table 1 and hot and cold, electric load year operation data etc.;Then, comprehensive energy station is established to set
Alternative type and capacity planning model, the mixed integer linear programming method for solving in the tool boxes Matlab software transfer OPTI,
Obtain comprehensive energy station equipment type selecting and capacity planning scheme, year overall cost and electricity, gas total amount consumed.It is carried using the present invention
The integrated energy system lectotype selection of the considerations of going out's electric heating gas coupling and method for planning capacity, choose four kinds of scenes and carry out to score
Analysis.
Scene one:Optional equipment includes electric boiler, electrical chillers, and input energy sources form is electric energy;
Scene two:Optional equipment includes electric boiler, electrical chillers, earth source heat pump, and input energy sources form is electric energy;
Scene three:Optional equipment includes electric boiler, electrical chillers, CHP units, and input energy sources form is for electric energy and naturally
Gas;
Scene four:Optional equipment includes electric boiler, electrical chillers, CHP units, earth source heat pump, and input energy sources form is
Electric energy and natural gas.
It is Intel (R) Xeon (R) CPU E5-16030 to execute the computer hardware environment that optimization calculates, and dominant frequency is
2.8GHz inside saves as 12GB;Software environment is 10 operating systems of Windows.
Comprehensive energy station equipment type selecting and capacity planning scheme are as shown in table 2.Compare scene one and scene two, optional equipment
Earth source heat pump is added, since the electric heating energy efficiency ratio of earth source heat pump is far above the electric-thermal transformation efficiency of electric boiler, electric boiler
Part heat supply output will be substituted by earth source heat pump, and capacity is reduced to 2700kVA from 6300kVA, and electric refrigerating machine pool-size is constant,
Illustrate that increased 900kVA earth source heat pumps are served only for heat supply;Scene one and scene three are compared, optional equipment adds CHP units,
Input energy sources form increases natural gas, since Gas Prices can supply electric load simultaneously significantly lower than electricity price and CHP units
And thermic load, the part heat supply output of electric boiler will be substituted by CHP units, capacity is reduced to 4300kVA, CHP machines from 6300kVA
Pool-size is 4100kVA;Scene four and scene three are compared, optional equipment introduces earth source heat pump, since earth source heat pump is with underground heat
Cold/heat source, electric heating energy efficiency ratio can be used as to be far above gas-thermal transition efficiency of CHP units, therefore, the optionally source of scheme four
Heat pump is heating equipment..
The corresponding year comprehensive cost of four kinds of programmes and electricity, gas Year's consumption are as shown in table 3.Compare scene one and scene
Two, since the energy conversion efficiency of earth source heat pump is high, cause scheme year comprehensive cost to reduce 791.53 ten thousand yuan, the range of decrease is
17.70%, wherein equipment maintenance cost and system operation expense reduces 337.36 and 474.02 ten thousand yuan, but because ground source respectively
Heat-pump apparatus initial outlay is higher, causes system equipment cost of investment to increase 19.87 ten thousand yuan, purchase of electricity reduces 532.28 ten thousand
KWh, the range of decrease 21.17%;Scene one and scene three are compared, since Gas Prices can be same significantly lower than electricity price and CHP units
When supply electric load and thermic load, year comprehensive cost reduce 137.29 ten thousand yuan, the range of decrease 3.07%, wherein system operation expense
474.02 ten thousand yuan are reduced, but CHP unit initial outlays are higher and energy conversion efficiency is not high, lead to system investment cost and dimension
Shield expense increases separately 223.62 and 183.65 ten thousand yuan, and purchase of electricity reduces 631.31 ten thousand kWh, the range of decrease 25.10%, and purchases gas
Amount increases 816.18 ten thousand kWh;Scheme four and scheme two year comprehensive cost and electricity, gas Year's consumption it is identical.
The integrated energy system lectotype selection for considering the coupling of electric heating gas of the present invention and method for planning capacity, can be according to system
Optional equipment and input energy sources type provide lectotype selection and capacity planning under different scenes.Sample calculation analysis shows that gained is advised
The scheme of drawing can significantly reduce the year comprehensive cost of system, and realization is provided multiple forms of energy to complement each other, and improve energy utilization rate.
1 system equipment parameter of table and other parameters
2 different scenes of table cook up place capacity situation
The year comprehensive cost and electricity, gas Year's consumption that 3 different scenes of table are cooked up
Claims (3)
1. a kind of integrated energy system lectotype selection considering the coupling of electric heating gas and method for planning capacity, which is characterized in that including
Following steps:
1) according to garden integrated energy system device category to be selected, the relevant parameter of all devices, including each equipment are inputted
Initial outlay cost, maintenance cost and the transformation efficiency of unit capacity input hot and cold, electric in electricity price, Gas Prices and garden
The year operation data of load;
2) parameter according to the input in step 1), establishes the model of integrated energy system lectotype selection and capacity planning, including:
With the minimum object function of system year comprehensive cost, various energy transition equipment models and corresponding operation constraint are established, is considered
Integrated energy system power-balance constraint;
3) the integrated energy system lectotype selection and capacity planning model that foundation step 2) obtains, and based on electric in garden, hot, cold
The historical data of load is solved using mixed integer linear programming method, obtain lectotype selection and capacity planning scheme,
Year comprehensive cost and electricity, gas Year's consumption.
2. the integrated energy system lectotype selection according to claim 1 for considering the coupling of electric heating gas and method for planning capacity,
It is characterized in that, the various energy transition equipment models and corresponding operation constraint described in step 2) include:
(1) electric boiler plan model and constraint:
In formula,It is the thermal power of t moment electric boiler,It is t moment electric boiler input terminal electrical power, ηEBIt is electric-thermal conversion
Efficiency, pCAP,EBIt is electric boiler minimum planning unit, xEBIt is the quantity of corresponding minimum planning unit;
(2) electrical chillers plan model and constraint:
In formula,It is the cold power of t moment electrical chillers,It is t moment electrical chillers input terminal electrical power, EACIt is energy
Imitate ratio, pCAP,ACIt is electrical chillers minimum planning unit, xACIt is the quantity of corresponding minimum planning unit;
(3) earth source heat pump plan model and constraint:
In formula,It is the thermal power of t moment earth source heat pump,It is the cold power of t moment earth source heat pump,It is t moment ground source
Heat pump input terminal electrical power, EH,HPIt is electric heating energy efficiency ratio, EC,HPIt is electric refrigeration efficiency ratio, pCAP,HPIt is the planning of earth source heat pump minimum
Unit, xHPIt is the quantity of corresponding minimum planning unit;
(4) cogeneration units plan model and constraint:
In formula,It is the thermal power of t moment cogeneration units,It is the electrical power of t moment cogeneration units,
It is t moment cogeneration units input terminal power, ηH,CHPAnd ηP,CHPBe respectively gas-thermal transition efficiency it is gentle-electrotransformation efficiency,
pCAP,CHPIt is cogeneration units minimum planning unit, xCHPIt is the quantity of corresponding minimum planning unit.
3. the integrated energy system lectotype selection according to claim 1 for considering the coupling of electric heating gas and method for planning capacity,
It is characterized in that, the consideration integrated energy system power-balance constraint described in step 2) includes:
(1) electrical power Constraints of Equilibrium:
In formula,It is electric load in t moment garden,It is the t moment power grid power that electric load provides into garden,It is the electrical power of t moment cogeneration units;
(2) heating power balance constrains:
In formula,It is thermic load in t moment garden,It is the thermal power of t moment electric boiler,It is t moment thermoelectricity connection
The thermal power of unit is produced,Thermal power during being the heating of t moment earth source heat pump;
(3) cold power-balance constraint:
In formula,It is refrigeration duty in t moment garden,It is the cold power of t moment electrical chillers,It is t moment ground source
Cold power during heat pump refrigerating.
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