CN107642772B - 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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- CN107642772B CN107642772B CN201710811869.8A CN201710811869A CN107642772B CN 107642772 B CN107642772 B CN 107642772B CN 201710811869 A CN201710811869 A CN 201710811869A CN 107642772 B CN107642772 B CN 107642772B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001816 cooling Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 title claims abstract description 12
- 238000010521 absorption reaction Methods 0.000 claims abstract description 27
- 239000002918 waste heat Substances 0.000 claims abstract description 23
- 238000010248 power generation Methods 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 claims description 13
- RZGZMLICFFEUIQ-UHFFFAOYSA-N 5-[(1-phenylcyclohexyl)amino]pentanoic acid Chemical compound C=1C=CC=CC=1C1(NCCCCC(=O)O)CCCCC1 RZGZMLICFFEUIQ-UHFFFAOYSA-N 0.000 claims description 11
- 241000283074 Equus asinus Species 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 7
- 238000012946 outsourcing Methods 0.000 claims description 4
- MATGKVZWFZHCLI-LSDHHAIUSA-N (-)-matairesinol Chemical compound C1=C(O)C(OC)=CC(C[C@@H]2[C@H](C(=O)OC2)CC=2C=C(OC)C(O)=CC=2)=C1 MATGKVZWFZHCLI-LSDHHAIUSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 101000868488 Saimiriine herpesvirus 2 (strain 11) Complement control protein homolog Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
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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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- Air Conditioning Control Device (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a kind of cogeneration cooling heating systems to meet workload demand progress control method simultaneously, applied in cogeneration cooling heating system, by adjusting electric refrigerator and Absorption Refrigerator refrigerating capacity, it realizes that cold and hot electric load meets and just recycles the matched effect of thermal energy with power generation and its waste heat, to realize the raising of efficiency of energy utilization.
Description
Technical field
The invention belongs to comprehensive utilization of energy field more particularly to the operation control technologies of cogeneration cooling heating system.
Background technique
Distributed energy resource system (Distributed Energy System) is close to user, cascade utilization, non-renewable energy
The features such as utilization efficiency is high, environmental-friendly, the energy safety of supply is reliable, by national governments, the extensive concern of business circles, blueness
It looks at.There are many form, supply of cooling, heating and electrical powers (Combined Cooling heating and power, letters for distributed energy resource system
Claim CCHP) it is one of highly important mode.
As shown in Figure 1, being the common cold and hot electric system of existing one kind, including generating set, by the suction of electric set electric supply
Receipts formula refrigeration machine, the heat recovery apparatus for recycling generating set generating waste-heat supply building heat recovery apparatus recycling heat
The heat exchanger of heat；It simultaneously further include electrical chillers, the donkey boiler for connecting external electrical network in the cold and hot electric system.Wherein make
Refrigeration duty is supplied by Absorption Refrigerator or electric refrigerator.Insufficient electricity needs from power grid power purchase by completing, no
The thermal energy of foot is supplied by donkey boiler.
Traditional operation reserve of cogeneration is to meet refrigeration duty demand with Absorption Refrigerator consumption thermal refrigerating.Heat
Demand constitutes equivalent thermic load plus the thermal energy that Absorption Refrigerator needs.Then according to the ratio of electric load and equivalent thermic load
It is to take " with hot fixed output quota " or " with electric fixed output quota " is tactful more than or less than power generation and determinations of the ratio between generating waste-heat yield.
Summary of the invention
The purpose of the present invention is the coordination power outputs by each equipment of rational management cogeneration cooling heating system to meet cool and thermal power
Efficiency of energy utilization is improved while load.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of cogeneration cooling heating system meets workload demand progress control method simultaneously, and the CCHP system of application is at least wrapped
Include generating set, by electric set electric supply Absorption Refrigerator, recycle generating set generating waste-heat heat recovery apparatus；
In period t, the relationship of the power generation of the CCHP system and generating waste-heat recycling are as follows:
Wherein: PCHPIt (t) is the production electric energy of CCHP system, unit kWh；QCHPIt (t) is the production thermal energy of CCHP system,
Unit is kWh；FCHPIt (t) is the gas consumption of CCHP system, unit kWh；ηCHP,HFor CCHP system heat recovery efficiency；
ηCHP,EFor CCHP system generating efficiency；PCHP,MAX, PCHP,MINIt is the maximum of CHP system, minimum generated energy, unit kWh respectively；
A, b, c are the coefficient of CCHP generating efficiency；F is the power output ratio of generating set PGU；
In period t, the cool and thermal power balancing the load of the CCHP system are as follows:
Wherein: LCIt (t) is the refrigeration duty demand of CCHP system, unit kWh；LHIt (t) is thermal load demands, unit is
kWh；LEIt (t) is the electrical load requirement of CCHP system, unit kWh；PGRIDIt (t) is the electricity of systems buying power grid, unit is
kWh；QECIt (t) is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABC
It (t) is the production refrigerating capacity of Absorption Refrigerator, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBL(t) it is
The output thermal energy of donkey boiler, unit kWh；Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator,
So that the sum of the electricity of electric refrigerator consumption and electric load are just equal to generating set power generation values, and Absorption Refrigerator consumes
Heat be just equal to generating waste-heat with the sum of thermic load and recycle calorie value, 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.
The utility model has the advantages that
Operation method proposed by the invention is reached by adjusting the refrigerating capacity of electric refrigerator and Absorption Refrigerator
The generating set of CCHP system generates electricity and its waste heat recycling can meet cold and hot electrical load requirement simultaneously, and it is negative to can be realized cool and thermal power
Lotus, which meets, just recycles the matched effect of thermal energy with power generation and its waste heat, without relatively not high outer of application efficiency of energy utilization
The thermal energy of power purchase net electric energy and donkey boiler, to obtain better efficiency of energy utilization.
Detailed description of the invention
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.
Specific embodiment
With reference to the accompanying drawing 2 and the invention will be further described by case study on implementation, following embodiment is descriptive
, it is not restrictive, this does not limit the scope of protection of the present invention.
The CCHP system that cogeneration cooling heating system of the present invention meets the application of workload demand progress control method simultaneously is at least wrapped
Include generating set, by electric set electric supply Absorption Refrigerator, recycle generating set generating waste-heat heat recovery apparatus.And have
Body practices in the central controller of CCHP system, and the purpose of the central controller is the generated energy that generator is arranged
PCHP(t), electric refrigerator produces refrigerating capacity QEC(t), Absorption Refrigerator produces refrigerating capacity QABC(t), outsourcing power grid electric
PGRID(t), donkey boiler produces 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 watt PCHP,MAX。
In period t, the relationship of the power generation of the CCHP system and generating waste-heat recycling are as follows:
Wherein: PCHPIt (t) is the production electric energy of CCHP system, unit kWh；QCHPIt (t) is the production thermal energy of CCHP system,
Unit is kWh；FCHPIt (t) is the gas consumption of CCHP system, unit kWh；ηCHP,HFor CCHP system heat recovery efficiency；
ηCHP,EFor CCHP system generating efficiency；PCHP,MAX, PCHP,MINIt is the maximum of CHP system, minimum generated energy, unit kWh respectively；
A, b, c are the coefficient of CCHP generating efficiency；F is the power output ratio of generating set PGU；
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 system are as follows:
Wherein: LCIt (t) is the refrigeration duty demand of CCHP system, unit kWh；LHIt (t) is thermal load demands, unit is
kWh；LEIt (t) is the electrical load requirement of CCHP system, unit kWh；PGRIDIt (t) is the electricity of systems buying power grid, unit is
kWh；QECIt (t) is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABC
It (t) is the production refrigerating capacity of Absorption Refrigerator, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBL(t) it is
The output thermal energy of donkey boiler, unit kWh；Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator,
So that the sum of the electricity of electric refrigerator consumption and electric load are just equal to generating set power generation values, and Absorption Refrigerator consumes
Heat be just equal to generating waste-heat with the sum of thermic load and recycle calorie value, 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 are calculated in cold and hot electric system using following formula and sent out when that is, above-mentioned formula (3), (4) are set up
The hour generated energy P of motor groupCHP(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 produces refrigerating capacity QEC(t), Absorption Refrigerator produces refrigerating capacity QABC(t), outsourcing power grid electric PGRID(t), donkey boiler is raw
Quantity of heat production QBL(t):
And the equipment being arranged in CCPH system by communication device implements production according to the output set in condition formula.
Claims (5)
1. a kind of cogeneration cooling heating system meets workload demand progress control method simultaneously, the CCHP system of application is included at least
Generating set, by electric set electric supply Absorption Refrigerator, recycle generating set generating waste-heat heat recovery apparatus；
In period t, the relationship of the power generation of the CCHP system and generating waste-heat recycling are as follows:
Wherein: PCHPIt (t) is the production electric energy of CCHP system, unit kWh；QCHPIt (t) is the production thermal energy of CCHP system, unit
For kWh；FCHPIt (t) is the gas consumption of CCHP system, unit kWh；ηCHP,HFor CCHP system heat recovery efficiency；ηCHP,E
For CCHP system generating efficiency；PCHP,MAX, PCHP,MINIt is the maximum of CHP system, minimum generated energy, unit kWh respectively；a,b,c
For the coefficient of CCHP generating efficiency；F is the power output ratio of generating set PGU；
In period t, the cool and thermal power balancing the load of the CCHP system are as follows:
Wherein: LCIt (t) is the refrigeration duty demand of CCHP system, unit kWh；LHIt (t) is thermal load demands, unit kWh；LE
It (t) is the electrical load requirement of CCHP system, unit kWh；PGRIDIt (t) is the electricity of systems buying power grid, unit kWh；QEC
It (t) is the production refrigerating capacity of electric refrigerator, unit kWh；COPECFor the Performance Coefficient of electric refrigerator；QABCIt (t) is absorption
The production refrigerating capacity of formula refrigeration machine, unit kWh；COPABCFor the Performance Coefficient of Absorption Refrigerator；QBLIt (t) is donkey boiler
Output thermal energy, unit kWh；It is characterized by:
Meet refrigeration duty demand by adjusting electric refrigerator and Absorption Refrigerator so that electric refrigerator consumption electric energy with
The sum of system electric load just be equal to generating set power generation values, and Absorption Refrigerator consumption thermal energy and system heat load it
Just it is equal to generating waste-heat and recycles calorie value, 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,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 described in claim 1, which is characterized 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):
Wherein, LCIt (t) is t period refrigeration duty demand, unit kWh；LHIt (t) is t period thermal load demands, unit kWh；LE
It (t) is t period electrical load requirement, unit kWh；COPECFor the energy efficiency coefficient of electric refrigerator；COPABCFor Absorption Refrigerator
Energy efficiency coefficient；ηCHP,H: CCHP system heat recovery efficiency is constant；ηCHP,E: CCHP system generating efficiency, with generator
The production electric energy P of groupCHP(t) change；PCHP(t): CCHP system t period generating set produces electric energy, unit kWh；QCHP(t):
CCHP system t period generating waste-heat recycles heat；PCHP,MAX: CCHP system generator group maximum generating watt, kWh；A, b, c power generation
The efficiency calculation coefficient of unit；kCHP,QpIt is p for generating set generated energyCHP(t) generating waste-heat recovery coefficient when；ηCHP,EFor power generation
Unit generation amount is PCHPWhen generating efficiency.
3. control method as described in claim 1, which is characterized in that when two condition formulas are set up, using following formula meter
It calculates setting electric refrigerator and produces refrigerating capacity QEC(t), Absorption Refrigerator produces refrigerating capacity QABC(t), outsourcing power grid electric PGRID
(t), donkey boiler produces heat QBL(t):
Wherein: COPECFor the energy efficiency coefficient of electric refrigerator；COPABCFor the energy efficiency coefficient of Absorption Refrigerator；kCHP,QPBy formula
(2) it defines；PCHP(t): CCHP system t period generating set produces electric energy；QCHP(t): the recycling of CCHP system t period generating waste-heat
Heat；QEC(t): the refrigerating capacity that t period electric refrigerator produces in CCHP system, unit kWh；QABC(t): t in CCHP system
The refrigerating capacity of period Absorption Refrigerator production, unit kWh；QBL(t): t period donkey boiler quantity of heat production in CCHP system, it is single
Position is kWh；PGRID(t): the CCHP system t period buys electric energy, unit kWh from power grid.
4. control method as claimed in claim 3, which is characterized in that the control method is applied to the center control of CCHP system
Device, the generated energy P of generator to be arranged by central controllerCHP(t), electric refrigerator produces refrigerating capacity QEC(t), it absorbs
Formula refrigeration machine produces refrigerating capacity QABC(t), outsourcing power grid electric PGRID(t), donkey boiler produces heat QBL(t)。
5. control method as described in claim 1, which is characterized in that if two condition formulas are set up, pass through communication dress
Sending instruction is set, produces the equipment in CCHP system according to the output set in condition formula.
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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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