CN113327043B - Method and system for planning output power of energy utilization equipment - Google Patents
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Abstract
The application relates to the field of energy utilization, and provides a method and a system for planning output power of energy utilization equipment. According to the embodiment of the application, the energy consumed by the energy utilization equipment of the user terminal is comprehensively considered as the four cold and hot electric energy sources, the four loads of the cold and hot electric of the user are met, and meanwhile, the output power of any one energy equipment with the highest energy utilization rate is obtained by combining the interconversion characteristics of the four cold and hot electric energy sources, and the defect that only a single energy source is considered in the prior art is overcome.
Description
Technical Field
The present application relates to the field of energy utilization, and in particular, to a method and a system for planning output power of energy consumption equipment.
Background
With the continuous promotion of industrialization, the energy consumption level is continuously improved, under the pressure of contradiction between the rapidly increased energy demand and the increasingly decreased supply and demand of fossil energy, the energy production and consumption mode needs to be changed, and the pursuit of efficient utilization of energy is of great importance.
The major currently available energy sources include: cold, heat, electricity and gas, which are utilized by energy consuming devices of users who are terminals using the four energy sources, the energy consuming devices providing cold energy, heat energy and electric energy to the users, the energy consuming devices including: the system comprises a cogeneration unit, a gas boiler, a gas turbine, an electric boiler, a heat pump, an energy device for electric refrigeration and an absorption refrigerator. And energy consumption equipment can cause unnecessary energy waste when satisfying user's energy supply demand, for example: one building needs heat energy, the heat is supplied by coal fired by a boiler and natural gas, the burnt tail gas is discharged into the atmosphere, and the tail gas also contains high heat energy and can be utilized, so that the heat energy is wasted.
In order to solve the problem of energy waste, in the actual production, the waste energy is recycled by other energy devices, such as: the above-mentioned extravagant tail gas can be collected with the absorption refrigerator to convert cold energy into, and then promote the utilization ratio of natural gas.
In order to increase the utilization rate of available energy, in the prior art, the output power of the energy equipment is planned to meet the load demand of the user, for example: in order to meet the heat load demand of a user, the output power of the energy utilization equipment providing heat energy needs to be planned, so that the energy utilization equipment providing heat energy provides proper output power, and the heat energy utilization rate is improved.
Disclosure of Invention
The application provides a planning method and a planning system for output power of energy utilization equipment, and aims to plan the output power of the energy utilization equipment of a user, comprehensively consider cold and hot electricity, and obtain the output power of the energy utilization equipment with the highest energy utilization rate.
The first aspect of the present application provides a method for planning output power of an energy-consuming device, where the method for planning output power of an energy-consuming device includes: obtaining historical energy consumption, historical output power and user load of an energy-using device, the energy-using device comprising: the system comprises a cogeneration unit, a gas boiler, a gas turbine, an electric boiler, a heat pump, electric refrigeration energy consumption equipment and an absorption refrigerator, wherein the historical energy consumption is the historical consumption of natural gas, the historical consumption of heat energy and the historical consumption of electric energy, the historical output power of the energy consumption equipment is the historical power generation power of the energy consumption equipment, the historical heat production power of the energy consumption equipment and the historical refrigeration power of the energy consumption equipment, and the user load comprises: user cold load, user heat load, user electrical load, and user gas load.
And obtaining the historical heat generation efficiency, the historical power generation efficiency and the historical energy efficiency coefficient of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption of the energy utilization equipment and the historical output power of the energy utilization equipment.
And obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat generation efficiency, the power generation efficiency and the energy efficiency ratio.
And according to the user load and the comprehensive energy utilization efficiency, obtaining the output power of any energy utilization equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy utilization equipment comprehensive energy model.
Optionally, the energy conversion model is obtained by:
GC 1 for the historical consumption of natural gas, P, of cogeneration units gt For the historical power generation power, H, of a cogeneration unit gt The historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power for the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power for the heat pump; h hr For the historical consumption of heat energy, H, of absorption chillers ac Historical refrigeration power for the absorption chiller;
the historical power generation efficiency of the cogeneration unit,
The historical heat production efficiency of the cogeneration unit is obtained; eta 2 Historical heat production efficiency for gas boilers;
the energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump in the refrigeration mode is gamma = 0; COP ac Is the energy efficiency coefficient of the absorption refrigerator.
Optionally, the energy conversion model needs to satisfy the following conditions:
P ee electric load quantity, P, provided for power distribution network gg The method comprises the steps that the natural gas combustion load capacity is provided for a natural gas distribution network, ES is the total power consumption, GS is the total natural gas consumption, and gamma is a variable of 0-1 to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
Optionally, the comprehensive energy utilization efficiency model is obtained by:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy per kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
Optionally, the energy utilization device integrated energy model includes: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is:
Q cold (t) is the user's cold load,
when the user cold load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The output power of the electric refrigerating energy-consuming equipment accounts for the proportion of the user refrigerating load.
The thermal load model is:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
for the heat load to be entirely composed ofWhen the electric boiler is used for supplying, the output power of the electric boiler;
when the user heat load is provided by the gas boiler, the output power of the gas boiler is provided;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load.
The electrical load model is:
Q e (t) is the electrical load of the user,
when the user electric load is provided by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
when the electric load of the user is completely provided by the electric boiler, the output power v of the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1。
And (3) gas load model:
Q gas (t) is the user gas load, which is the total power of the plant that can directly utilize natural gas, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, η, of the gas turbine when the gas load for the user is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
A second aspect of the present application provides a system for planning output power of an energy-consuming device, the system comprising: the device comprises an acquisition module, an energy conversion module, an energy utilization efficiency module and an energy equipment output power module.
The obtaining module is configured to obtain the historical energy consumption amount of the energy consumption device, the historical output power of the energy consumption device, and the user load.
The energy conversion module is used for obtaining historical heat generation efficiency, historical power generation efficiency and historical energy efficiency coefficient of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption of the energy utilization equipment and the historical output power of the energy utilization equipment.
The energy utilization efficiency module is used for obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat generation efficiency, the power generation efficiency and the energy efficiency ratio.
And the energy equipment output power module is used for obtaining the output power of any energy equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy equipment comprehensive energy model according to the user load and the comprehensive energy utilization efficiency.
Optionally, the energy conversion model is obtained by:
GC 1 historical consumption of natural gas, P, for cogeneration units gt For the historical power generation power, H, of a cogeneration unit gt The historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power of the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power of the heat pump; h hr Historical consumption of heat energy, H, for absorption chillers ac The historical refrigeration power of the absorption refrigerator;
the historical power generation efficiency of the cogeneration unit,
The historical heat production efficiency of the cogeneration unit is obtained; eta 2 Generating heat for the history of gas boiler
The energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump under the refrigeration mode is gamma = 0; COP ac Is the energy efficiency coefficient of the absorption refrigerator.
Optionally, the energy conversion model needs to satisfy the following conditions:
P ee electric load quantity, P, provided for power distribution network gg The method comprises the steps that the natural gas burning load quantity provided for a natural gas distribution network is provided, ES is the total power consumption, GS is the total natural gas consumption, and gamma is 0-1 variable to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
Optionally, the comprehensive energy utilization efficiency model is obtained by:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy per kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
Optionally, the energy utilization device integrated energy model includes: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is:
Q cold (t) is the user's cooling load,
when the user cold load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The output power of the energy equipment for electric refrigeration accounts for the proportion of the cooling load of users.
The thermal load model is:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
when the heat load is provided by an electric boiler, the output power of the electric boiler is provided;
when the heat load of the user is provided by the gas boiler, the output power of the gas boiler is provided;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load.
The electrical load model is:
Q e (t) is the electrical load of the user,
for consumer electricityWhen the load is provided entirely by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
when the electric load of the user is completely provided by the electric boiler, the output power v of the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1。
And (3) gas load model:
Q gas (t) is the user gas load, which is the total power of the plant that can directly utilize natural gas, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, η, of the gas turbine when the gas load for the user is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
According to the technical scheme, the output power of any energy equipment with the maximum historical heat production efficiency, historical power generation efficiency, historical energy efficiency coefficient, comprehensive energy utilization efficiency and comprehensive energy utilization efficiency is obtained by obtaining the historical energy consumption, the historical output power and the user load of the energy equipment and utilizing the pre-established energy conversion model, the comprehensive energy utilization efficiency model and the comprehensive energy model of the energy equipment. This application has realized the acquirement of each energy consumption equipment output under the highest energy utilization efficiency to comprehensively consider cold and hot electricity, four big energy factors, energy utilization efficiency is high.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a method for planning output power of an energy consumption device according to an embodiment of the present application.
Fig. 2 is a basic architecture diagram of a system for planning output power of an energy utilization device according to an embodiment of the present application.
Fig. 3 is a system topology diagram of a user energy-using device according to an embodiment of the present application.
Detailed Description
The following describes specific embodiments of the present application in detail. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart of a method for planning output power of an energy utilization device according to an embodiment of the present application.
A first aspect of an embodiment of the present application provides a method for planning output power of an energy consumption device, where the method for planning output power of an energy consumption device includes:
s101, historical energy consumption, historical output power and user load of energy utilization equipment are obtained, and the energy utilization equipment comprises: the combined heat and power generation unit, the gas boiler, the gas turbine, the electric boiler, the heat pump, the electric refrigeration energy consumption equipment and the absorption refrigerator, the historical energy consumption is the historical consumption of natural gas, the historical consumption of heat energy and the historical consumption of electric energy, the historical output power of the energy consumption equipment is the historical power generation power of the energy consumption equipment, the historical heat production power of the energy consumption equipment and the historical refrigeration power of the energy consumption equipment, and the user load comprises: user cold load, user heat load, user electrical load, and user gas load.
And S102, obtaining historical heat generation efficiency, historical power generation efficiency and historical energy efficiency coefficient of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption amount of the energy utilization equipment and the historical output power of the energy utilization equipment.
Wherein the energy conversion model is obtained by:
GC 1 historical consumption of natural gas, P, for cogeneration units gt For the historical power generation power, H, of a cogeneration unit gt The historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power of the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power of the heat pump; h hr For the historical consumption of heat energy, H, of absorption chillers ac Historical refrigeration power for the absorption chiller;
the historical generating efficiency of the cogeneration unit,
The historical heat production efficiency of the cogeneration unit is obtained; eta 2 Historical heat production efficiency for gas boilers;
the energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump under the refrigeration mode is gamma = 0; COP (coefficient of Performance) ac Is the energy efficiency coefficient of the absorption refrigerator.
In addition, the energy conversion model needs to satisfy the following conditions:
P ee electric load quantity, P, provided for electric power distribution network gg The method comprises the steps that the natural gas combustion load capacity is provided for a natural gas distribution network, ES is the total power consumption, GS is the total natural gas consumption, and gamma is a variable of 0-1 to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
And S103, obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat generation efficiency, the power generation efficiency and the energy efficiency ratio.
Wherein, the comprehensive energy utilization efficiency model is obtained by the following method:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy per kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
Referring to fig. 3, a system topology diagram of a user energy utilization device provided in the embodiment of the present application is shown.
Wherein PE is an electric load, PH is a heat load, PC is a cold load, and PG is a gas load.
And S104, obtaining the output power of any one piece of energy equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy equipment comprehensive energy model according to the user load and the comprehensive energy utilization efficiency.
Wherein, the energy utilization equipment comprehensive energy model comprises: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is:
Q cold (t) is the user's cooling load,
when the user cold load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The output power of the energy equipment for electric refrigeration accounts for the proportion of the cooling load of users.
The thermal load model is:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
when the heat load is provided by an electric boiler, the output power of the electric boiler is provided;
when the user heat load is provided by the gas boiler, the output power of the gas boiler is provided;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load.
The electrical load model is:
Q e (t) is the electrical load of the user,
when the user electric load is provided by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
when the electric load of the user is completely provided by the electric boiler, the output power v of the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1。
The gas load model is:
Q gas (t) is the customer gas load, which is the total power of the plant that can directly utilize natural gas, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, eta, of gas turbine when the customer gas load is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
According to the technical scheme, the output power of any energy equipment with the maximum historical heat production efficiency, historical power generation efficiency, historical energy efficiency coefficient, comprehensive energy utilization efficiency and comprehensive energy utilization efficiency of the energy equipment is obtained by obtaining the historical energy consumption, the historical output power and the user load of the energy equipment and utilizing the pre-established energy conversion model, the comprehensive energy utilization efficiency model and the comprehensive energy model of the energy equipment. According to the embodiment of the application, four energy consumption factors of cold and hot electricity are comprehensively considered, and four user loads of the cold and hot electricity of a user are combined, so that the output power of each energy utilization device with the highest energy utilization rate is obtained while the user loads are met, and the planning of the output power of the energy device is realized.
Referring to fig. 2, a basic architecture diagram of a system for planning output power of an energy utilization device according to an embodiment of the present application is provided.
A second aspect of the present application provides a system for planning an output power of an energy plant, the system comprising: the device comprises an acquisition module, an energy conversion module, an energy utilization efficiency module and an energy equipment output power module.
The obtaining module is configured to obtain the historical energy consumption amount of the energy consumption device, the historical output power of the energy consumption device, and the user load.
The energy conversion module is used for obtaining historical heat generation efficiency, historical power generation efficiency and historical energy efficiency coefficient of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption of the energy utilization equipment and the historical output power of the energy utilization equipment.
The energy utilization efficiency module is used for obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat generation efficiency, the power generation efficiency and the energy efficiency ratio.
And the energy equipment output power module is used for obtaining the output power of any energy equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy equipment comprehensive energy model according to the user load and the comprehensive energy utilization efficiency.
Wherein the energy conversion model is obtained by:
GC 1 for the historical consumption of natural gas, P, of cogeneration units gt For the historical power generation power, H, of a cogeneration unit gt Historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power of the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power of the heat pump; h hr For the historical consumption of heat energy, H, of absorption chillers ac For historical cooling work of absorption refrigeratorRate;
the historical power generation efficiency of the cogeneration unit,
The historical heat production efficiency of the cogeneration unit is obtained; eta 2 Historical heat production efficiency for gas boilers;
the energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump under the refrigeration mode is gamma = 0; COP (coefficient of Performance) ac Is the energy efficiency coefficient of the absorption refrigerator.
In addition, the energy conversion model needs to satisfy the following conditions:
P ee electric load quantity, P, provided for power distribution network gg The method comprises the steps that the natural gas burning load quantity provided for a natural gas distribution network is provided, ES is the total power consumption, GS is the total natural gas consumption, and gamma is 0-1 variable to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
Wherein, the comprehensive energy utilization efficiency model is obtained by the following method:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy per kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
Wherein, the energy utilization equipment comprehensive energy model comprises: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is as follows:
Q cold (t) is the user's cold load,
when the user cold load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The output power of the energy equipment for electric refrigeration accounts for the proportion of the cooling load of users.
The thermal load model is as follows:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
when the heat load is provided by an electric boiler, the output power of the electric boiler is provided;
the heat load for the user is provided by a gas boilerThe output power of the gas boiler;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load.
The electrical load model is as follows:
Q e (t) is the electrical load of the user,
when the user electric load is provided by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
output power of the electric boiler, v, when the electric load of the user is provided by the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1。
The gas load model is as follows:
Q gas (t) is the customer gas load, which is the total power of the plant that can directly utilize natural gas, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, η, of the gas turbine when the gas load for the user is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
Inputting the historical energy consumption of the energy utilization equipment, the historical output power of the energy utilization equipment and the user load into the acquisition module, transmitting the historical energy consumption of the energy utilization equipment and the historical output power of the energy utilization equipment to the energy conversion module by the acquisition module, and obtaining the historical heat production efficiency, the historical power generation efficiency and the historical energy efficiency coefficient by using the energy conversion model; the acquisition module transmits the historical energy consumption amount and the historical output power of the energy utilization equipment to the energy utilization efficiency module, the energy conversion module transmits the historical heat production efficiency, the historical power generation efficiency and the historical energy efficiency coefficient to the energy utilization efficiency module, and the comprehensive energy utilization efficiency model is utilized to obtain the comprehensive energy utilization efficiency; the acquisition module transmits the user load to the energy equipment output power module, and the energy equipment output power module receives the comprehensive energy utilization efficiency transmitted by the energy utilization efficiency module, and outputs the output power of any energy equipment with the maximum comprehensive energy utilization efficiency by using the energy equipment comprehensive energy model.
According to the technical scheme, the method and the system for planning the output power of the energy equipment, provided by the embodiment of the application, obtain the historical energy consumption amount, the historical output power and the user load of the energy equipment, and obtain the output power of any energy equipment with the maximum historical heat generation efficiency, historical power generation efficiency, historical energy efficiency coefficient, comprehensive energy utilization efficiency and comprehensive energy utilization efficiency of the energy equipment by using the pre-established energy conversion model, comprehensive energy utilization efficiency model and comprehensive energy model of the energy equipment. According to the embodiment of the application, the energy consumed by the energy utilization equipment of the user terminal is comprehensively considered as the four cold and hot electric energy sources, the four loads of the cold and hot electric of the user are met, and meanwhile, the output power of any one energy equipment with the highest energy utilization rate is obtained by combining the interconversion characteristics of the four cold and hot electric energy sources, and the defect that only a single energy source is considered in the prior art is overcome.
The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.
Claims (10)
1. A method for planning output power of an energy consuming device, comprising:
obtaining historical energy consumption, historical output power and user load of an energy-using device, the energy-using device comprising: the combined heat and power generation unit, the gas boiler, the gas turbine, the electric boiler, the heat pump, the electric refrigeration energy consumption equipment and the absorption refrigerator, the historical energy consumption is the historical consumption of natural gas, the historical consumption of heat energy and the historical consumption of electric energy, the historical output power of the energy consumption equipment is the historical power generation power of the energy consumption equipment, the historical heat production power of the energy consumption equipment and the historical refrigeration power of the energy consumption equipment, and the user load comprises: user cold load, user heat load, user electrical load, and user gas load;
obtaining historical heat production efficiency, historical power generation efficiency and historical energy efficiency coefficients of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption amount of the energy utilization equipment and the historical output power of the energy utilization equipment;
obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat production efficiency, the power generation efficiency and the energy efficiency ratio;
and according to the user load and the comprehensive energy utilization efficiency, obtaining the output power of any energy utilization equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy utilization equipment comprehensive energy model.
2. The method for planning output power of an energy consuming device according to claim 1, wherein the energy conversion model is obtained by:
GC 1 for the historical consumption of natural gas, P, of cogeneration units gt For the historical power generation power, H, of a cogeneration unit gt The historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power of the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power for the heat pump; h hr For the historical consumption of heat energy, H, of absorption chillers ac The historical refrigeration power of the absorption refrigerator;
the historical power generation efficiency of the cogeneration unit,
For combined heat and power generating machinesHistorical heat production efficiency of the group; eta 2 Historical heat production efficiency for gas boilers;
the energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump under the refrigeration mode is gamma = 0; COP (coefficient of Performance) ac Is the energy efficiency coefficient of the absorption refrigerator.
3. The method for planning the output power of the energy utilization equipment according to claim 1, wherein the energy conversion model is required to satisfy the following conditions:
P ee electric load quantity, P, provided for power distribution network gg The method comprises the steps that the natural gas burning load quantity provided for a natural gas distribution network is provided, ES is the total power consumption, GS is the total natural gas consumption, and gamma is 0-1 variable to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
4. The method for planning the output power of the energy utilization equipment according to claim 1, wherein the comprehensive energy utilization efficiency model is obtained by:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy contained in kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
5. The method for planning output power of energy utilization equipment according to claim 1, wherein the energy utilization equipment integrated energy model comprises: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is:
Q cold (t) is the user's cold load,
when the user cold load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The proportion of the output power of the electric refrigeration energy-consuming equipment in the user refrigeration load is calculated;
the thermal load model is:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
when the heat load is provided by the electric boiler, the electric boilerThe output power of the furnace;
when the user heat load is provided by the gas boiler, the output power of the gas boiler is provided;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load;
the electrical load model is:
Q e (t) is the electrical load of the user,
when the user electric load is provided by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
output power of the electric boiler, v, when the electric load of the user is provided by the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1；
And (3) gas load model:
Q gas (t) is the customer gas load, which is the total power of the plant that can directly utilize natural gas, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, η, of the gas turbine when the gas load for the user is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
6. An energy consumption equipment output power planning system, wherein the energy consumption equipment output power planning system is used for executing an energy consumption equipment output power planning method according to any one of claims 1-5, and comprises: the system comprises an acquisition module, an energy conversion module, an energy utilization efficiency module and an energy equipment output power module;
the obtaining module is used for obtaining the historical energy consumption of the energy utilization equipment, the historical output power of the energy utilization equipment and the user load;
the energy conversion module is used for obtaining historical heat generation efficiency, historical power generation efficiency and historical energy efficiency coefficient of the energy utilization equipment by utilizing a pre-established energy conversion model according to the historical energy consumption amount of the energy utilization equipment and the historical output power of the energy utilization equipment;
the energy utilization efficiency module is used for obtaining comprehensive energy utilization efficiency by utilizing a pre-established comprehensive energy utilization efficiency model according to the historical energy consumption, the historical output power, the heat generation efficiency, the power generation efficiency and the energy efficiency ratio;
and the energy equipment output power module is used for obtaining the output power of any energy equipment with the maximum comprehensive energy utilization efficiency by utilizing a pre-established energy equipment comprehensive energy model according to the user load and the comprehensive energy utilization efficiency.
7. The system for planning output power of an energy consuming device according to claim 6, wherein the energy conversion model is obtained by:
GC 1 for the historical consumption of natural gas, P, of cogeneration units gt For the historical generated power, H, of a cogeneration unit gt The historical heat production power of the cogeneration unit; GC 2 Is the historical consumption of natural gas, H, of the gas boiler gb Historical heat production power for the gas boiler; EC (EC) 3 The historical electric energy consumption of the heat pump,
For the historical heat production power of the heat pump,
Historical refrigeration power of the heat pump; h hr For the historical consumption of heat energy, H, of absorption chillers ac Historical refrigeration power for the absorption chiller;
the historical generating efficiency of the cogeneration unit,
The historical heat production efficiency of the cogeneration unit is obtained; eta 2 Historical heat production efficiency for gas boilers;
the energy efficiency coefficient of the heat pump under the heating mode with gamma =1,
the energy efficiency coefficient of the heat pump in the refrigeration mode is gamma = 0; COP ac Is the energy efficiency coefficient of the absorption refrigerator.
8. The system for planning output power of an energy consuming device according to claim 6, wherein the energy conversion model is required to satisfy the following conditions:
P ee electric load quantity, P, provided for power distribution network gg The method comprises the steps that the natural gas burning load quantity provided for a natural gas distribution network is provided, ES is the total power consumption, GS is the total natural gas consumption, and gamma is 0-1 variable to control the starting and stopping of a heat pump; EL is total electric quantity input, HL is total heat input, CL is total cold energy input, and GL is total natural gas input.
9. The system for planning the output power of the energy utilization device according to claim 6, wherein the comprehensive energy utilization efficiency model is obtained by:
eta is the comprehensive energy utilization efficiency in unit time; 3600 energy per kilowatt-hour in kilojoules; 35580 is the energy per cubic meter of natural gas in kilojoules.
10. The system for planning the output power of the energy utilization equipment according to claim 6, wherein the integrated energy model of the energy utilization equipment comprises: the comprehensive energy source model comprises a cold load model, a heat load model, an electric load model and an air load model, and is obtained by the following steps:
the cold load model is:
Q cold (t) is the user's cold load,
when the user cooling load is provided by the electric refrigeration energy utilization equipment, the output power of the electric refrigeration energy utilization equipment is provided;
when the user cold load is provided by the absorption refrigerator, the output power of the absorption refrigerator is provided; v. of 1 The proportion of the output power of the electric refrigeration energy utilization equipment in the user cold load is calculated;
the thermal load model is:
v 21 (t)+v 22 (t)+v 23 (t)＝1
Q heat (t) is the user's heat load,
when the heat load is provided by an electric boiler, the output power of the electric boiler is provided;
for the user to heatWhen the load is completely provided by the gas boiler, the output power of the gas boiler;
the output power of the gas turbine when the user heat load is provided by the gas turbine; v. of 21 (t) is the ratio of the output power of the electric boiler to the user heat load, v 22 (t) is the ratio of the output power of the gas boiler to the user heat load, v 23 (t) is the ratio of the output power of the gas turbine to the customer heat load;
the electrical load model is:
Q e (t) is the electrical load of the user,
when the user electric load is provided by the gas turbine, the output power of the gas turbine,
when the user electric load is provided by the electric refrigerator, the output power of the electric refrigerator,
output power of the electric boiler, v, when the electric load of the user is provided by the electric boiler 3 (t) is the ratio of the output power of the gas turbine to the consumer electrical load, v is greater than or equal to 0 3 (t)≤1；
And (3) gas load model:
Q gas (t) is the customer gas load, which is a facility that can directly utilize natural gasTotal power of reserve, P source (t) is the consumption of the natural gas input to the natural gas distribution network,
output power, η, of the gas turbine when the gas load for the user is supplied exclusively by the gas turbine gt Expressed as the thermal efficiency of the gas turbine,
when the gas load of a user is provided by the gas boiler, the output heat power of the gas boiler is provided; eta gb Represents the thermal efficiency of the gas boiler; LHV is the lower heating value of natural gas, LHV =9.78kWh/m3.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108694483A (en) * | 2018-07-28 | 2018-10-23 | 天津大学 | Consider integrated energy system lectotype selection and the method for planning capacity of the coupling of electric heating gas |
| CN109783909A (en) * | 2018-12-29 | 2019-05-21 | 天津大学 | Consider the comprehensive energy station equipment type selecting and method for planning capacity of a variety of energy storage devices |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108694483A (en) * | 2018-07-28 | 2018-10-23 | 天津大学 | Consider integrated energy system lectotype selection and the method for planning capacity of the coupling of electric heating gas |
| CN109783909A (en) * | 2018-12-29 | 2019-05-21 | 天津大学 | Consider the comprehensive energy station equipment type selecting and method for planning capacity of a variety of energy storage devices |
Non-Patent Citations (2)
| Title |
|---|
| 区域综合能源系统的能效定义及其相关性分析;刘晓鸥等;《电力系统自动化》;20200425(第08期);全文 * |
| 考虑多功能区差异性以及冷热电负荷平衡的综合能源系统规划;李柳松等;《能源工程》;20200620(第03期);全文 * |
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