CN117196113A - Energy system scheduling method considering mutual recognition of energy use right and carbon emission right - Google Patents
Energy system scheduling method considering mutual recognition of energy use right and carbon emission right Download PDFInfo
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Abstract
The invention discloses an energy system scheduling method considering energy use right-carbon emission right mutual recognition, which comprises the following steps: step one, data acquisition; establishing an energy consumption right-carbon emission right quota mutual authentication mechanism; step three, establishing an area comprehensive energy system optimization model; according to the acquired data, the energy consumption and carbon emission ration mutual recognition mechanism is established according to the targets of reasonable use ration and minimum system cost, the energy consumption and carbon emission ration mutual recognition mechanism is established by taking the energy consumption and carbon emission ration transaction cost, the interaction cost with a power grid and the lowest energy purchasing cost as objective functions, and the regional comprehensive energy system optimization model considering the energy consumption and carbon emission ration mutual recognition mechanism is established, so that the energy consumption and the carbon ration can be reasonably scheduled, the economic benefit and the environmental protection benefit of regional comprehensive energy system operation are improved, and the aim of simultaneously considering economic benefit and environmental protection benefit on the basis of ensuring higher energy utilization rate is achieved.
Description
Technical Field
The invention relates to the technical field of energy right trading markets and carbon trading markets, in particular to an energy system scheduling method considering mutual recognition of energy right-carbon emission rights.
Background
The energy consumption right and the carbon emission right are the behaviors that the government distributes the resources to the performance units and allows the resources to trade in the market on the premise of controlling the total amount, so that the environmental resources are rare and economical, and the paid usability of the resources is highlighted. The energy consumption is basically the same as the carbon emission system, and a foundation is provided for connecting the energy consumption and the carbon emission system. The energy consumption right and the carbon emission right are two parallel and complementary energy saving and emission reduction measures, the energy consumption right trade focuses on front-end management, and the carbon emission right trade focuses on tail-end management. The energy consumption transaction can promote emission reduction while realizing energy conservation, and the carbon emission transaction can promote energy conservation while realizing emission reduction. The regional comprehensive energy system realizes the coupling operation among multiple energy sources, breaks through the traditional barrier of energy source supply, improves the energy utilization efficiency of the system, and reduces the operation cost. The energy right transaction and the carbon emission right transaction mechanism are used as effective means for saving energy and reducing emission, and the energy right transaction and the carbon emission right transaction mechanism are introduced into the regional comprehensive energy system optimization and have important significance. However, in the prior art, the regional comprehensive energy system lacks an effective method capable of ensuring higher energy utilization rate and considering economic benefit and environmental benefit.
Disclosure of Invention
The present invention is directed to a method for scheduling energy systems, which considers the mutual recognition of energy usage rights and carbon emission rights, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: an energy system scheduling method considering energy use right-carbon emission right mutual recognition comprises the following steps: step one, data acquisition; establishing an energy consumption right-carbon emission right quota mutual authentication mechanism; step three, establishing an area comprehensive energy system optimization model;
in the first step, specific energy consumption quota and carbon emission quota of a cogeneration unit (CHP), a Gas Boiler (GB) and external electricity purchasing are determined based on a datum line method, and respective actual energy consumption and carbon emission are determined;
in the second step, according to the aim of reasonably using quota and minimizing system cost, establishing an energy use-carbon emission right quota mutual recognition mechanism to realize energy-carbon quota conversion;
in the third step, the lowest energy utilization transaction cost, carbon emission right transaction cost, interaction cost with the power grid and energy purchasing cost are taken as objective functions, an area comprehensive energy system optimization model considering an energy utilization right-carbon emission right quota mutual recognition mechanism is established, and corresponding constraint conditions are given.
Preferably, in the first step, the method specifically includes:
1.1, regarding the energy consumption quota, adopting the gratuitous energy consumption quota based on the datum line method, wherein the main sources of energy consumption are a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be from thermal power generation;
1.2 regarding carbon emission quota, gratuitous carbon emission quota based on a datum line method is adopted, a carbon emission source mainly comprises a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be all from thermal power generation.
Preferably, in the step 1.1,
(1) The specific usage right quota can be obtained by the following formula:
in which Q CHP (t),Q GB (t),Q grid (t) is the energy consumption quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the energy consumption quota is calculated according to the equivalent heating value;
in sigma h ,σ e The energy consumption quota of the unit generating capacity and the heat is respectively set; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual energy consumption can be obtained by the following formula:
in which Q CHP,p (t),Q GB,p (t),Q grid,p (t) is the energy consumption of electricity purchasing of an external power grid at the moments of t CHP and GB respectively; sigma (sigma) h,p ,σ e,p Is the actual power conversion coefficient.
Preferably, in the step 1.2,
(1) The specific usage right quota can be obtained by the following formula:
wherein E is CHP (t),E GB (t),E grid (t) is the carbon emission quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the carbon emission quota is calculated according to the equivalent heating value;
wherein lambda is h ,λ e Carbon quota for unit power generation and heat; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual carbon emission amount can be obtained by the following formula:
wherein E is CHP,p (t),E GB,p (t),E grid,p (t) is the carbon emission of electricity purchasing of an external power grid at the moments of t CHP, GB and t respectively; lambda (lambda) h,p ,λ e,p Is the actual carbon emission coefficient.
Preferably, in the second step, the energy use-carbon emission allowance mutual authentication mechanism specifically includes:
ΔE Z,p ＝ε p ΔQ Z,p (9)
wherein DeltaE is Z,p To undergo a transition carbon quota, Δq Z,p Epsilon for use energy quota to undergo conversion p The energy use-carbon emission conversion coefficient.
Preferably, in the third step, the method specifically includes:
3.1, for an area comprehensive energy system containing right-of-use transaction and carbon emission right transaction, introducing a right-of-use and carbon emission right quota mutual recognition mechanism into an area comprehensive energy system optimization model, wherein the right-of-use transaction cost, the carbon emission right transaction cost, the interaction cost with a power grid and the purchase energy cost are the lowest as objective functions;
3.2, constraint conditions of an area comprehensive energy system optimization model considering an energy use-carbon emission quota mutual recognition mechanism comprise CHP unit operation constraint, GB unit operation constraint, upper network power transmission constraint, electric energy storage constraint, thermal energy storage constraint and system power balance constraint;
and 3.3, establishing evaluation indexes for an area comprehensive energy system optimization model considering an energy use right-carbon emission right quota mutual recognition mechanism, and quantitatively evaluating the merits of the established model.
Preferably, in the step 3.1, the specific steps are as follows:
minF＝min(F M +F C +F G +F grid ) (10)
wherein F is the total cost of the system; f (F) M ,F C ,F W ,F G ,F grid The energy consumption trading cost, the carbon emission trading cost, the interaction cost with the power grid and the energy purchasing cost can be expressed as follows:
wherein p is M Trade price for right of use; p is p C Trade prices for carbon emissions rights; lambda (lambda) G Is the price of natural gas; p (P) g (t) is the natural gas purchase amount at the moment t; p is p grid And (t) is the electricity purchase price at the time t.
Preferably, in the step 3.2, the following is specifically expressed:
(1) CHP unit operation constraints
Wherein P is CHP,e (t),P CHP,h (t) respectively outputting electric energy and heat energy by the CHP unit at the moment t; p (P) CHP,g (t) inputting natural gas power of the CHP unit at the moment t; η (eta) CHP,e ,η CHP,h The electrical and thermal efficiencies of CHP, respectively;natural CHP inputs at time t respectivelyUpper and lower limits of gas power; />The upper limit and the lower limit of the climbing of the CHP unit are respectively set;
(2) GB unit operation constraint
Wherein P is GB,h (t) is the thermal power output by the GB unit at the moment t; p (P) GB,g (t) inputting natural gas power of the GB unit at the moment t; η (eta) GB Energy conversion efficiency is GB;inputting the upper limit and the lower limit of the GB natural gas power at the moment t respectively;the upper limit and the lower limit of the climbing of the GB unit are respectively set;
(3) Power transfer constraints with upper level networks
Wherein P is buy (t),P buy,g (t) is the transmission power of the upper power grid and the air network at the moment t respectively;the maximum value of the transmission power with the upper power grid and the air grid respectively;
(4) Electric energy storage constraint
In the method, in the process of the invention,respectively charging and discharging power of the electric energy storage device in the t period; />The upper limit of the charging and discharging power of the electric energy storage is respectively set; />Charging and discharging efficiencies of the electric energy storage respectively; s is S e (t) is the electrical energy storage capacity of the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(5) Thermal energy storage constraint
In the method, in the process of the invention,respectively charging and discharging power of the thermal energy storage device in the period t; />The upper limit of the charging and discharging power of the thermal energy storage is respectively set; />Respectively charging and discharging efficiency of the thermal energy storage; s is S h (t) is a thermal energy storage capacity for the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(6) System power balance constraint
Wherein P is e,load (t),P h,load And (t) is the demand of electric and thermal loads at the moment t respectively.
Preferably, in the step 3.3, the following is specifically expressed:
(1) System carbon emissions E p
(2) Energy utilization efficiency R E
Wherein n is 1 ,n g The average power supply efficiency and the line loss rate of the coal-fired unit are respectively.
Compared with the prior art, the invention has the beneficial effects that: according to the acquired data, the energy consumption and carbon emission ration mutual recognition mechanism is established according to the targets of reasonable use ration and minimum system cost, the energy consumption and carbon emission ration mutual recognition mechanism is established by taking the energy consumption and carbon emission ration transaction cost, the interaction cost with a power grid and the lowest energy purchasing cost as objective functions, and the regional comprehensive energy system optimization model considering the energy consumption and carbon emission ration mutual recognition mechanism is established, so that the energy consumption and the carbon ration can be reasonably scheduled, the economic benefit and the environmental protection benefit of regional comprehensive energy system operation are improved, and the aim of simultaneously considering economic benefit and environmental protection benefit on the basis of ensuring higher energy utilization rate is achieved.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of the usage right-carbon emission right quota mutual recognition principle provided by the embodiment of the invention;
fig. 3 is a block diagram of an area integrated energy system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, an embodiment of the present invention is provided: an energy system scheduling method considering energy use right-carbon emission right mutual recognition comprises the following steps: step one, data acquisition; establishing an energy consumption right-carbon emission right quota mutual authentication mechanism; step three, establishing an area comprehensive energy system optimization model;
the first step specifically includes:
1.1, regarding the energy consumption quota, adopting the gratuitous energy consumption quota based on the datum line method, wherein the main sources of energy consumption are a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be from thermal power generation;
(1) The specific usage right quota can be obtained by the following formula:
in which Q CHP (t),Q GB (t),Q grid (t) is the energy consumption quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the energy consumption quota is calculated according to the equivalent heating value;
in sigma h ,σ e The energy consumption quota of the unit generating capacity and the heat is respectively set; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual energy consumption can be obtained by the following formula:
in which Q CHP,p (t),Q GB,p (t),Q grid,p (t) is the energy consumption of electricity purchasing of an external power grid at the moments of t CHP and GB respectively; sigma (sigma) h,p ,σ e,p Is the actual electric energy conversion coefficient;
1.2, regarding carbon emission quota, adopting gratuitous carbon emission quota based on a datum line method, wherein a carbon emission source mainly comprises a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be all from thermal power generation;
(1) The specific usage right quota can be obtained by the following formula:
wherein E is CHP (t),E GB (t),E grid (t) is the carbon emission quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the carbon emission quota is calculated according to the equivalent heating value;
wherein lambda is h ,λ e Carbon quota for unit power generation and heat; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual carbon emission amount can be obtained by the following formula:
wherein E is CHP,p (t),E GB,p (t),E grid,p (t) is the carbon emission of electricity purchasing of an external power grid at the moments of t CHP, GB and t respectively; lambda (lambda) h,p ,λ e,p Is the actual carbon emission coefficient;
in the second step, according to the aim of reasonably using quota and minimizing system cost, establishing an energy use-carbon emission right quota mutual recognition mechanism to realize energy-carbon quota conversion; the energy consumption-carbon emission quota mutual recognition mechanism specifically comprises the following steps:
ΔE Z,p ＝ε p ΔQ Z,p (9)
wherein DeltaE is Z,p To undergo a transition carbon quota, Δq Z,p Epsilon for use energy quota to undergo conversion p Conversion coefficient for energy use-carbon emission;
the third step specifically includes:
3.1, for an area comprehensive energy system containing right-of-use transaction and carbon emission right transaction, introducing a right-of-use and carbon emission right quota mutual recognition mechanism into an area comprehensive energy system optimization model, wherein the right-of-use transaction cost, the carbon emission right transaction cost, the interaction cost with a power grid and the purchase energy cost are the lowest as objective functions;
the concrete steps are as follows:
minF＝min(F M +F C +F G +F grid ) (10)
wherein F is the total cost of the system; f (F) M ,F C ,F W ,F G ,F grid The energy consumption trading cost, the carbon emission trading cost, the interaction cost with the power grid and the energy purchasing cost can be expressed as follows:
wherein p is M To use energy right to communicateThe price is easy; p is p C Trade prices for carbon emissions rights; lambda (lambda) G Is the price of natural gas; p (P) g (t) is the natural gas purchase amount at the moment t; p is p grid (t) is the electricity purchase price at time t;
3.2, constraint conditions of an area comprehensive energy system optimization model considering an energy use-carbon emission quota mutual recognition mechanism comprise CHP unit operation constraint, GB unit operation constraint, upper network power transmission constraint, electric energy storage constraint, thermal energy storage constraint and system power balance constraint;
the concrete steps are as follows:
(1) CHP unit operation constraints
Wherein P is CHP,e (t),P CHP,h (t) respectively outputting electric energy and heat energy by the CHP unit at the moment t; p (P) CHP,g (t) inputting natural gas power of the CHP unit at the moment t; η (eta) CHP,e ,η CHP H is the electrical and thermal efficiency of CHP, respectively;the upper limit and the lower limit of the power of the natural gas input into the CHP at the moment t are respectively; />The upper limit and the lower limit of the climbing of the CHP unit are respectively set;
(2) GB unit operation constraint
Wherein P is GB,h (t) is the thermal power output by the GB unit at the moment t; p (P) GB,g (t) inputting natural gas power of the GB unit at the moment t; η (eta) GB Energy conversion efficiency is GB;inputting the upper limit and the lower limit of the GB natural gas power at the moment t respectively;the upper limit and the lower limit of the climbing of the GB unit are respectively set;
(3) Power transfer constraints with upper level networks
Wherein P is buy (t),P buy,g (t) is the transmission power of the upper power grid and the air network at the moment t respectively;the maximum value of the transmission power with the upper power grid and the air grid respectively;
(4) Electric energy storage constraint
In the method, in the process of the invention,respectively charging and discharging power of the electric energy storage device in the t period; />The upper limit of the charging and discharging power of the electric energy storage is respectively set; />Charging and discharging efficiencies of the electric energy storage respectively; s is S e (t) is the electrical energy storage capacity of the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(5) Thermal energy storage constraint
In the method, in the process of the invention,respectively thermal energy storage deviceCharge and discharge power set in t period; />The upper limit of the charging and discharging power of the thermal energy storage is respectively set; />Respectively charging and discharging efficiency of the thermal energy storage; s is S h (t) is a thermal energy storage capacity for the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(6) System power balance constraint
Wherein P is e,load (t),P h,load (t) is the demand of electric and thermal loads at time t respectively;
3.3, establishing evaluation indexes for an area comprehensive energy system optimization model considering an energy use right-carbon emission right quota mutual recognition mechanism, and quantitatively evaluating the merits of the established model;
the concrete steps are as follows:
(1) System carbon emissions E p
(2) Energy utilization efficiency R E
Wherein n is 1 ,n g The average power supply efficiency and the line loss rate of the coal-fired unit are respectively.
By adopting the method provided by the embodiment, the simulation result of the regional comprehensive energy system introduced with the mutual recognition mechanism is analyzed and explained by taking the regional comprehensive energy system as a research object and comparing with a model which does not consider the mutual recognition mechanism; the price of the carbon transaction is 50 yuan/t; the price of the right transaction is 60 yuan/t; the energy supply equipment parameters are shown in table 1, the energy storage equipment parameters are shown in table 2, and the electricity purchasing price is shown in table 3; the modeling method belongs to the linear programming problem, a CPLEX solver is called by using GAMS software to solve, and table 4 is 3 scenes designed for the research institute; as can be seen from table 5: compared with the scene 1, the scene 2 has the advantages that after the energy right trading mechanism and the carbon emission right trading mechanism are introduced, the total cost of the system is reduced by 2.1 percent, because the system obtains profits after the energy right trading market and the carbon trading market are introduced; correspondingly, the carbon emission is reduced by 10.03t, and the energy utilization efficiency is improved; and in the scene 3, an energy consumption-carbon emission quota mutual recognition mechanism is introduced on the basis of the scene 2, because the energy consumption quota and the carbon emission quota can mutually recognize, the system obtains a certain profit from the energy consumption market, the total cost of the system is reduced by 14.52 ten thousand yuan, the carbon emission is slightly increased for the lowest total cost, the energy utilization rate is slightly reduced, but the carbon emission is still reduced compared with the scene 1, and the energy utilization rate is still improved.
Table 1 energy supply device parameters
Table 2 energy storage device parameters
| Apparatus and method for controlling the operation of a device | Capacity of | Initial capacity | Upper limit of capacity | Lower limit of capacity | Charging efficiency | Discharge efficiency |
| Electric power | 450 | 135 | 90 | 20 | 0.95 | 0.95 |
| Heat of the body | 500 | 150 | 90 | 20 | 0.95 | 0.95 |
Table 3 electricity purchase price
Table 4 different scene information
TABLE 5 simulation results for each scene
| Scene 1 | Scene 2 | Scene 3 | |
| Operating cost/ten thousand yuan | 1790.57 | 1791.16 | 1792.53 |
| Cost of energy right trade/ten thousand yuan | 0 | 3.51 | -24.38 |
| Carbon trade cost/ten thousand yuan | 0 | -55.87 | -43.87 |
| Total cost/ten thousand yuan | 1790.57 | 1738.8 | 1724.28 |
| Carbon emission/t | 9005.61 | 8995.58 | 8980.57 |
| Energy utilization efficiency/% | 77.24 | 77.37 | 77.27 |
Based on the above, the invention has the advantages that the invention firstly determines the specific energy consumption quota and the carbon emission quota of the cogeneration unit, the gas boiler and the external electricity purchasing based on the datum line method, and determines the respective actual energy consumption and carbon emission; according to the goals of reasonable use quota and system cost minimization, an energy use-carbon emission right quota mutual recognition mechanism is established, and energy-carbon quota conversion is realized; establishing an area comprehensive energy system optimization model considering an energy use right-carbon emission right quota mutual recognition mechanism by taking the lowest energy use right transaction cost, carbon emission right transaction cost, interaction cost with a power grid and energy purchasing cost as an objective function, and giving corresponding constraint conditions; therefore, the energy consumption quota and the carbon quota are reasonably scheduled, the economic benefit and the environmental benefit of system operation are improved, and the economic benefit and the environmental benefit can be simultaneously considered on the basis of ensuring higher energy utilization rate.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. An energy system scheduling method considering energy use right-carbon emission right mutual recognition comprises the following steps: step one, data acquisition; establishing an energy consumption right-carbon emission right quota mutual authentication mechanism; step three, establishing an area comprehensive energy system optimization model; the method is characterized in that:
in the first step, specific energy consumption quota and carbon emission quota of a cogeneration unit (CHP), a Gas Boiler (GB) and external electricity purchasing are determined based on a datum line method, and respective actual energy consumption and carbon emission are determined;
in the second step, according to the aim of reasonably using quota and minimizing system cost, establishing an energy use-carbon emission right quota mutual recognition mechanism to realize energy-carbon quota conversion;
in the third step, the lowest energy utilization transaction cost, carbon emission right transaction cost, interaction cost with the power grid and energy purchasing cost are taken as objective functions, an area comprehensive energy system optimization model considering an energy utilization right-carbon emission right quota mutual recognition mechanism is established, and corresponding constraint conditions are given.
2. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 1, wherein: the first step specifically includes:
1.1, regarding the energy consumption quota, adopting the gratuitous energy consumption quota based on the datum line method, wherein the main sources of energy consumption are a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be from thermal power generation;
1.2 regarding carbon emission quota, gratuitous carbon emission quota based on a datum line method is adopted, a carbon emission source mainly comprises a cogeneration unit, a gas boiler and an external power grid for purchasing electricity, and the external power grid is assumed to be all from thermal power generation.
3. An energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 2, wherein: in the step 1.1 of the process described above,
(1) The specific usage right quota can be obtained by the following formula:
in which Q CHP (t),Q GB (t),Q grid (t) is the energy consumption quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the energy consumption quota is calculated according to the equivalent heating value;
in sigma h ,σ e The energy consumption quota of the unit generating capacity and the heat is respectively set; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual energy consumption can be obtained by the following formula:
in which Q CHP,p (t),Q GB,p (t),Q grid,p (t) is the energy consumption of electricity purchasing of an external power grid at the moments of t CHP and GB respectively; sigma (sigma) h,p ,σ e,p Is the actual power conversion coefficient.
4. An energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 2, wherein: in the step 1.2 of the process described above,
(1) The specific usage right quota can be obtained by the following formula:
wherein E is CHP (t),E GB (t),E grid (t) is the carbon emission quota of the cogeneration unit, the gas boiler and the electricity purchasing to the power grid at the moment t respectively;
considering that the CHP thermoelectric ratio is larger than 1, the CHP generating capacity is equivalent to the heating value, and then the carbon emission quota is calculated according to the equivalent heating value;
wherein lambda is h ,λ e Carbon quota for unit power generation and heat; p (P) CHP,e (t),P CHP,h (t) the power generation amount and the heat generation amount of CHP at time t, respectively; p (P) GB (t) is the heating value at time t GB; p (P) buy (t) is the electricity purchasing quantity of the external power grid at the moment t; delta e,h (t) is an electrothermal conversion coefficient;
(2) The actual carbon emission amount can be obtained by the following formula:
wherein E is CHP,p (t),E GB,p (t),E grid,p (t) is the carbon emission of electricity purchasing of an external power grid at the moments of t CHP, GB and t respectively; lambda (lambda) h,p ,λ e,p Is the actual carbon emission coefficient.
5. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 1, wherein: in the second step, the energy consumption right-carbon emission right quota mutual authentication mechanism specifically comprises:
ΔE Z,p ＝ε p ΔQ Z,p (9)
wherein DeltaE is Z,p To undergo a transition carbon quota, Δq Z,p Epsilon for use energy quota to undergo conversion p The energy use-carbon emission conversion coefficient.
6. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 1, wherein: in the third step, specifically, the method includes:
3.1, for an area comprehensive energy system containing right-of-use transaction and carbon emission right transaction, introducing a right-of-use and carbon emission right quota mutual recognition mechanism into an area comprehensive energy system optimization model, wherein the right-of-use transaction cost, the carbon emission right transaction cost, the interaction cost with a power grid and the purchase energy cost are the lowest as objective functions;
3.2, constraint conditions of an area comprehensive energy system optimization model considering an energy use-carbon emission quota mutual recognition mechanism comprise CHP unit operation constraint, GB unit operation constraint, upper network power transmission constraint, electric energy storage constraint, thermal energy storage constraint and system power balance constraint;
and 3.3, establishing evaluation indexes for an area comprehensive energy system optimization model considering an energy use right-carbon emission right quota mutual recognition mechanism, and quantitatively evaluating the merits of the established model.
7. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 6, wherein: in the step 3.1, the specific steps are as follows:
minF＝min(F M +F C +F G +F grid ) (10)
wherein F is the total cost of the system; f (F) M ,F C ,F W ,F G ,F grid The energy consumption trading cost, the carbon emission trading cost, the interaction cost with the power grid and the energy purchasing cost can be expressed as follows:
wherein p is M Trade price for right of use; p is p C Trade prices for carbon emissions rights; lambda (lambda) G Is the price of natural gas; p (P) g (t) is the natural gas purchase amount at the moment t; p is p grid And (t) is the electricity purchase price at the time t.
8. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 6, wherein: in the step 3.2, the specific steps are as follows:
(1) CHP unit operation constraints
Wherein P is CHP,e (t),P CHP,h (t) respectively outputting electric energy and heat energy by the CHP unit at the moment t; p (P) CHP,g (t) inputting natural gas power of the CHP unit at the moment t; η (eta) CHP,e ,η CHP,h The electrical and thermal efficiencies of CHP, respectively;the upper limit and the lower limit of the power of the natural gas input into the CHP at the moment t are respectively; />The upper limit and the lower limit of the climbing of the CHP unit are respectively set;
(2) GB unit operation constraint
Wherein P is GB,h (t) is the thermal power output by the GB unit at the moment t; p (P) GB,g (t) inputting natural gas power of the GB unit at the moment t; η (eta) GB Is of GBEnergy conversion efficiency;inputting the upper limit and the lower limit of the GB natural gas power at the moment t respectively;the upper limit and the lower limit of the climbing of the GB unit are respectively set;
(3) Power transfer constraints with upper level networks
Wherein P is buy (t),P buy,g (t) is the transmission power of the upper power grid and the air network at the moment t respectively;the maximum value of the transmission power with the upper power grid and the air grid respectively;
(4) Electric energy storage constraint
In the method, in the process of the invention,respectively charging and discharging power of the electric energy storage device in the t period; />The upper limit of the charging and discharging power of the electric energy storage is respectively set; />Charging and discharging efficiencies of the electric energy storage respectively; s is S e (t) is the electrical energy storage capacity of the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(5) Thermal energy storage constraint
In the method, in the process of the invention,respectively charging and discharging power of the thermal energy storage device in the period t; />The upper limit of the charging and discharging power of the thermal energy storage is respectively set; />Respectively charging and discharging efficiency of the thermal energy storage; s is S h (t) is a thermal energy storage capacity for the t-th period; />Upper and lower limits of the electrical energy storage capacity, respectively;
(6) System power balance constraint
Wherein P is e,load (t),P h,load And (t) is the demand of electric and thermal loads at the moment t respectively.
9. The energy system scheduling method considering energy right-carbon emission right mutual recognition according to claim 6, wherein: in the step 3.3, the specific steps are as follows:
(1) System carbon emissions E p
(2) Energy utilization efficiency R E
Wherein n is 1 ,n g The average power supply efficiency and the line loss rate of the coal-fired unit are respectively.
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