CN107642772A - Cogeneration cooling heating system meets workload demand progress control method simultaneously - Google Patents
Cogeneration cooling heating system meets workload demand progress control method simultaneously Download PDFInfo
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- CN107642772A CN107642772A CN201710811869.8A CN201710811869A CN107642772A CN 107642772 A CN107642772 A CN 107642772A CN 201710811869 A CN201710811869 A CN 201710811869A CN 107642772 A CN107642772 A CN 107642772A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
Meet workload demand progress control method simultaneously the invention discloses a kind of cogeneration cooling heating system, applied in cogeneration cooling heating system, by adjusting electric refrigerator and Absorption Refrigerator refrigerating capacity, realize that cold and hot electric load meets the effect just matched with generating and its waste heat recovery heat energy, so as to realize the raising of efficiency of energy utilization.
Description
Technical field
The invention belongs to the operation control technology in comprehensive utilization of energy field, more particularly to cogeneration cooling heating system.
Background technology
Distributed energy resource system (Distributed Energy System) is with close to user, cascade utilization, primary energy
The features such as utilization ratio is high, environment-friendly, the energy safety of supply is reliable, by national governments, the extensive concern of business circles, green grass or young crops
Look at.Distributed energy resource system has diversified forms, supply of cooling, heating and electrical powers (Combined Cooling heating and power, letter
Claim CCHP) it is the highly important mode of one of which.
As shown in figure 1, be the common cold and hot electric system of existing one kind, including generating set, the suction by electric set electric supply
Receipts formula refrigeration machine, reclaim generating set generating waste-heat heat reclamation device, by heat reclamation device reclaim heat to building supply
The heat exchanger of heat；Also include electrical chillers, the donkey boiler of connection external electrical network in the cold and hot electric system simultaneously.Wherein make
Refrigeration duty is supplied by Absorption Refrigerator or electric refrigerator.The electricity needs of deficiency from power network power purchase by completing, no
The heat energy of foot is supplied by donkey boiler.
Traditional operation reserve of CCHP is to meet refrigeration duty demand with Absorption Refrigerator consumption thermal refrigerating.Heat
The heat energy that demand needs plus Absorption Refrigerator forms equivalent thermic load.Then according to electric load and the ratio of equivalent thermic load
It is to take " with hot fixed output quota " or " with electric fixed output quota " tactful more than or less than generating electricity with the determination of the ratio between generating waste-heat yield.
The content of the invention
The purpose of the present invention is to contribute meeting cool and thermal power by the coordination of each equipment of rational management cogeneration cooling heating system
Efficiency of energy utilization is improved while load.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of cogeneration cooling heating system meets workload demand progress control method simultaneously, and its CCHP system applied at least is wrapped
Include generating set, by electric set electric supply Absorption Refrigerator, reclaim generating set generating waste-heat heat reclamation device；
In period t, the relation that the generating of the CCHP systems is reclaimed with generating waste-heat is：
Wherein：PCHP(t) it is the production electric energy of CCHP systems, unit kWh；QCHP(t) it is the production heat energy of CCHP systems,
Unit is kWh；FCHP(t) it is the gas consumption of CCHP systems, unit kWh；ηCHP,HFor CCHP system heat recovery efficiencies；
ηCHP,EFor CCHP system generating efficiencies；PCHP,MAX, PCHP,MINIt is the maximum of CHP systems respectively, minimum generated energy, unit kWh；
A, b, c are the coefficient of CCHP generating efficiencies；F is generating set PGU output ratio；
In period t, the cool and thermal power balancing the load of the CCHP systems is：
Wherein：LC(t) it is the refrigeration duty demand of CCHP systems, unit kWh；LH(t) it is thermal load demands, unit is
kWh；LE(t) it is the electrical load requirement of CCHP systems, unit kWh；PGRID(t) it is for the electricity of systems buying power network, unit
kWh；QEC(t) it is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABC
(t) it is the production refrigerating capacity of Absorption Refrigerator, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBL(t) it is
The output heat energy of donkey boiler, unit kWh；Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator,
So that the electricity of electric refrigerator consumption is just equal to generating set power generation values with electric load sum, and Absorption Refrigerator consumes
Heat be just equal to generating waste-heat recovery calorie value with thermic load sum, that is, there are following two condition formulas to set up：
Wherein：k′CHP,QPIt is (L for generating set generated energyE(t)+LC(t)/COPEC) when generating waste-heat recovery coefficient；
k″CHP,QPIt is L for generating set generated energyE(t) generating waste-heat recovery coefficient when；η′CHP,EIt is (L for generating set generated energyE(t)
+LC(t)/COPEC) when generating efficiency；η″CHP,EIt is L for generating set generated energyE(t) generating efficiency when.
Beneficial effect：
Operation method proposed by the invention, by adjusting the refrigerating capacity of electric refrigerator and Absorption Refrigerator, reach
The generating set of CCHP systems generates electricity and its waste heat recovery can meet cold and hot electrical load requirement simultaneously, can realize that cool and thermal power is born
Lotus meets that relatively not high without application efficiency of energy utilization is outer just with the effect to generate electricity and its waste heat recovery heat energy matches
The heat energy of power purchase net electric energy and donkey boiler, so as to obtain more preferable efficiency of energy utilization.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of common cogeneration cooling heating system in the prior art；
Fig. 2 is the flow chart of operation method of the present invention.
Embodiment
Below in conjunction with the accompanying drawings 2 and the invention will be further described by case study on implementation, following examples are descriptive
, it is not limited, it is impossible to which protection scope of the present invention is limited with this.
Cogeneration cooling heating system of the present invention meets that the CCHP systems of workload demand progress control method application are at least wrapped simultaneously
Include generating set, by electric set electric supply Absorption Refrigerator, reclaim generating set generating waste-heat heat reclamation device.And have
Body is practiced in the central controller of CCHP systems, and the purpose of the central controller is to set the generated energy of generator
PCHP(t), electric refrigerator production refrigerating capacity QEC(t), Absorption Refrigerator production refrigerating capacity QABC(t), outsourcing power grid electric
PGRID(t), donkey boiler production heat QBL(t).It is as follows to implement " while meeting workload demand " operation reserve of the invention.
The parameter of equipment is obtained ahead of time：1) efficiency calculation the coefficient a, b, c of generating set.2) the efficiency system of electric refrigerator
Number COPEC；3) the energy efficiency coefficient COP of Absorption RefrigeratorABC；4)：CCHP system generator group maximum generating watts PCHP,MAX。
In period t, the relation that the generating of the CCHP systems is reclaimed with generating waste-heat is：
Wherein：PCHP(t) it is the production electric energy of CCHP systems, unit kWh；QCHP(t) it is the production heat energy of CCHP systems,
Unit is kWh；FCHP(t) it is the gas consumption of CCHP systems, unit kWh；ηCHP,HFor CCHP system heat recovery efficiencies；
ηCHP,EFor CCHP system generating efficiencies；PCHP,MAX, PCHP,MINIt is the maximum of CHP systems respectively, minimum generated energy, unit kWh；
A, b, c are the coefficient of CCHP generating efficiencies；F is generating set PGU output ratio；
Obtain the cold and hot electrical load requirement L of period tc(t), LH(t), LE(t)；
In period t, the cool and thermal power balancing the load of the CCHP systems is：
Wherein：LC(t) it is the refrigeration duty demand of CCHP systems, unit kWh；LH(t) it is thermal load demands, unit is
kWh；LE(t) it is the electrical load requirement of CCHP systems, unit kWh；PGRID(t) it is for the electricity of systems buying power network, unit
kWh；QEC(t) it is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABC
(t) it is the production refrigerating capacity of Absorption Refrigerator, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBL(t) it is
The output heat energy of donkey boiler, unit kWh；Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator,
So that the electricity of electric refrigerator consumption is just equal to generating set power generation values with electric load sum, and Absorption Refrigerator consumes
Heat be just equal to generating waste-heat recovery calorie value with thermic load sum, that is, there are following two condition formulas to set up：
Wherein：k′CHP,QPIt is (L for generating set generated energyE(t)+LC(t)/COPEC) when generating waste-heat recovery coefficient；
k″CHP,QPIt is L for generating set generated energyE(t) generating waste-heat recovery coefficient when；η′CHP,EIt is (L for generating set generated energyE(t)
+LC(t)/COPEC) when generating efficiency；η″CHP,EIt is L for generating set generated energyE(t) generating efficiency when.
When two condition formulas, i.e., when above-mentioned formula (3), (4) are set up, calculated in cold and hot electric system and sent out using following formula
The hour generated energy P of group of motorsCHP(t)：
Two condition formulas are set up, i.e., when above-mentioned formula (3), (4) are set up, using the electronic refrigeration of following formula calculating and setting
Machine production refrigerating capacity QEC(t), Absorption Refrigerator production refrigerating capacity QABC(t), outsourcing power grid electric PGRID(t), donkey boiler is given birth to
Quantity of heat production QBL(t)：
And the equipment in CCPH systems is set to implement production according to the output set in condition formula by communicator.
Claims (5)
1. a kind of cogeneration cooling heating system meets workload demand progress control method simultaneously, its CCHP system applied comprises at least
Generating set, by electric set electric supply Absorption Refrigerator, reclaim generating set generating waste-heat heat reclamation device；
In period t, the relation that the generating of the CCHP systems is reclaimed with generating waste-heat is：
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Wherein：PCHP(t) it is the production electric energy of CCHP systems, unit kWh；QCHP(t) it is the production heat energy of CCHP systems, unit
For kWh；FCHP(t) it is the gas consumption of CCHP systems, unit kWh；ηCHP,HFor CCHP system heat recovery efficiencies；ηCHP,E
For CCHP system generating efficiencies；PCHP,MAX, PCHP,MINIt is the maximum of CHP systems respectively, minimum generated energy, unit kWh；a,b,c
For the coefficient of CCHP generating efficiencies；F is generating set PGU output ratio；
In period t, the cool and thermal power balancing the load of the CCHP systems is：
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(t) it is the electrical load requirement of CCHP systems, unit kWh；PGRID(t) it is the electricity of systems buying power network, unit kWh；QEC
(t) it is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABC(t) it is absorption
The production refrigerating capacity of formula refrigeration machine, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBL(t) it is donkey boiler
Output heat energy, unit kWh；It is characterized in that：
Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator so that electric refrigerator consumption electric energy with
System electric load sum is just equal to generating set power generation values, and the heat energy and system heat load of Absorption Refrigerator consumption it
Just it is equal to generating waste-heat recovery calorie value, that is, there are following two condition formulas to set up：
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<mi>L</mi>
<mi>C</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>/</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>c</mi>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>L</mi>
<mi>C</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>/</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
<mo>;</mo>
</mrow>
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>L</mi>
<mi>H</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>L</mi>
<mi>C</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>/</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
<mi>C</mi>
</mrow>
</msub>
</mrow>
</mfrac>
<mo><</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<msup>
<mi>k</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>Q</mi>
<mi>P</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<msup>
<mi>k</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>Q</mi>
<mi>P</mi>
</mrow>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<msup>
<mi>&eta;</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>E</mi>
</mrow>
</msub>
<mo>)</mo>
<mo>&CenterDot;</mo>
<msub>
<mi>&eta;</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>H</mi>
</mrow>
</msub>
</mrow>
<mrow>
<msub>
<msup>
<mi>&eta;</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>E</mi>
</mrow>
</msub>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<msup>
<mi>&eta;</mi>
<mrow>
<mo>&prime;</mo>
<mo>&prime;</mo>
</mrow>
</msup>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>E</mi>
</mrow>
</msub>
<mo>=</mo>
<mi>a</mi>
<mo>+</mo>
<mi>b</mi>
<mo>&CenterDot;</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>c</mi>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein：k′CHP,QPIt is (L for generating set generated energyE(t)+LC(t)/COPEC) when generating waste-heat recovery coefficient；k″CHP,QPFor
Generating set generated energy is LE(t) generating waste-heat recovery coefficient when；η′CHP,EIt is (L for generating set generated energyE(t)+LC(t)/
COPEC) when generating efficiency；η″CHP,EIt is L for generating set generated energyE(t) generating efficiency when.
2. control method as claimed in claim 1, it is characterised in that when two condition formulas are set up, using following formula
Calculate the hour generated energy P of generating set in cold and hot electric systemCHP(t)：
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>L</mi>
<mi>C</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>L</mi>
<mi>H</mi>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<mrow>
<msub>
<mi>COP</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>COP</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>k</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>Q</mi>
<mi>P</mi>
</mrow>
</msub>
</mrow>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>k</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>Q</mi>
<mi>P</mi>
</mrow>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<mn>1</mn>
<mo>-</mo>
<msub>
<mi>&eta;</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>.</mo>
<mi>E</mi>
</mrow>
</msub>
<mo>)</mo>
<mo>&CenterDot;</mo>
<msub>
<mi>&eta;</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>H</mi>
</mrow>
</msub>
</mrow>
<msub>
<mi>&eta;</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>.</mo>
<mi>E</mi>
</mrow>
</msub>
</mfrac>
</mrow>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>&eta;</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>.</mo>
<mi>E</mi>
</mrow>
</msub>
<mo>=</mo>
<mi>a</mi>
<mo>+</mo>
<mi>b</mi>
<mo>&CenterDot;</mo>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>c</mi>
<mo>&CenterDot;</mo>
<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
</mrow>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
<mo>,</mo>
<mi>M</mi>
<mi>A</mi>
<mi>X</mi>
</mrow>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein, LC(t) it is t period refrigeration duty demands, unit kWh；LH(t) it is t period thermal load demands, unit kWh；LE
(t) it is t period electrical load requirements, unit kWh；COPECFor the energy efficiency coefficient of electric refrigerator；COPABCFor Absorption Refrigerator
Energy efficiency coefficient；ηCHP,H：CCHP system heat recovery efficiencies, it is constant；ηCHP,E：CCHP system generating efficiencies, it is with generator
The production electric energy P of groupCHP(t) change；PCHP(t)：CCHP system t periods generating set produces electric energy, unit kWh；QCHP(t)：
CCHP system t periods generating waste-heat reclaims heat；PCHP,MAX：CCHP system generator group maximum generating watts, kWh；A, b, c generate electricity
The efficiency calculation coefficient of unit；kCHP,QPIt is P for generating set generated energyCHP(t) generating waste-heat recovery coefficient when；ηCHP,ETo generate electricity
Unit generation amount is PCHPWhen generating efficiency.
3. control method as claimed in claim 1, it is characterised in that when two condition formulas are set up, using following formula meter
Calculate and set electric refrigerator to produce refrigerating capacity QEC(t), Absorption Refrigerator production refrigerating capacity QABC(t), outsourcing power grid electric PGRID
(t), donkey boiler production heat QBL(t)：
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<msub>
<mi>Q</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
<mo>=</mo>
<mi>C</mi>
<mi>O</mi>
<msub>
<mi>P</mi>
<mrow>
<mi>E</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>(</mo>
<msub>
<mi>P</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<msub>
<mi>L</mi>
<mi>E</mi>
</msub>
<mo>)</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>Q</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
<mo>=</mo>
<mi>C</mi>
<mi>O</mi>
<msub>
<mi>P</mi>
<mrow>
<mi>A</mi>
<mi>B</mi>
<mi>C</mi>
</mrow>
</msub>
<mo>(</mo>
<msub>
<mi>Q</mi>
<mrow>
<mi>C</mi>
<mi>H</mi>
<mi>P</mi>
</mrow>
</msub>
<mrow>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
</mrow>
<mo>-</mo>
<msub>
<mi>L</mi>
<mi>H</mi>
</msub>
<mo>)</mo>
</mtd>
</mtr>
<mtr>
<mtd>
<msub>
<mi>Q</mi>
<mrow>
<mi>B</mi>
<mi>L</mi>
</mrow>
</msub>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
<mo>=</mo>
<mn>0</mn>
<mo>;</mo>
<msub>
<mi>P</mi>
<mrow>
<mi>G</mi>
<mi>R</mi>
<mi>I</mi>
<mi>D</mi>
</mrow>
</msub>
<mo>(</mo>
<mi>t</mi>
<mo>)</mo>
<mo>=</mo>
<mn>0</mn>
</mtd>
</mtr>
</mtable>
</mfenced>
Wherein：COPECFor the energy efficiency coefficient of electric refrigerator；COPABCFor the energy efficiency coefficient of Absorption Refrigerator；kCHP,QPBy formula
(2) define；PCHP(t)：CCHP system t periods generating set produces electric energy；QCHP(t)：CCHP system t periods generating waste-heat reclaims
Heat；QEC(t)：The refrigerating capacity that t periods electric refrigerator produces in CCHP systems, unit kWh；QABC(t)：T in CCHP systems
The refrigerating capacity of period Absorption Refrigerator production, unit kWh；QBL(t)：T period donkey boilers quantity of heat production in CCHP systems, it is single
Position is kWh；PGRID(t)：The CCHP system t periods buy electric energy, unit kWh from power network.
4. control method as claimed in claim 3, it is characterised in that applied to the central controller of CCHP systems, center control
The purpose of device processed is to set the generated energy P of generatorCHP(t), electric refrigerator production refrigerating capacity QEC(t), Absorption Refrigerator is given birth to
Produce refrigerating capacity QABC(t), outsourcing power grid electric PGRID(t), donkey boiler production heat QBL(t)。
5. control method as claimed in claim 1, it is characterised in that if condition formula is set up, sent by communicator
Instruction, makes the equipment in CCHP systems be produced according to the output set in condition formula.
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| CN110648252A (en) * | 2019-09-26 | 2020-01-03 | 云南电网有限责任公司电力科学研究院 | Building thermoelectric scheduling method based on flexible dynamic heat balance |
| CN112907147A (en) * | 2021-04-01 | 2021-06-04 | 华北电力大学 | Distributed energy system operation method and system based on optimal working condition points |
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| JPH06236202A (en) * | 1993-02-10 | 1994-08-23 | Hitachi Ltd | Method and device for operating plant |
| CN104808489A (en) * | 2015-03-09 | 2015-07-29 | 山东大学 | Three-level cooperative integrative optimization method for combined cooling heating and power system |
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| CN112907147B (en) * | 2021-04-01 | 2023-09-12 | 华北电力大学 | Distributed energy system operation method and system based on optimal working condition point |
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