CN113240279B - Comprehensive energy system operation control method and system based on comprehensive demand side response - Google Patents
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Abstract
The disclosure provides a comprehensive energy system operation control method and system based on comprehensive demand side response, comprising the following steps: considering the participation of electricity, cold and heat loads in comprehensive demand side response, and constructing an energy balance model based on the structural composition of a comprehensive energy system; obtaining an expression of coupling relation among different energies in the comprehensive energy system based on an energy balance model; acquiring an energy output curve of the thermoelectric generator set by using the coupling relation among energies, and dividing user requirements into different types according to the energy output curve of the thermoelectric generator set; and according to the division of the load types, based on the comprehensive demand side response model and the energy balance model, respectively formulating corresponding equipment operation and demand side response strategies. And the efficient matching of the system energy output and the energy utilization load is realized.
Description
Technical Field
The disclosure belongs to the technical field of environmental protection and energy-saving control, and particularly relates to a comprehensive energy system operation control method and system based on comprehensive demand side response.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In the face of increasingly severe energy and environmental problems, it is a great trend to construct a low-carbon, clean, safe and efficient green energy supply and demand system. The comprehensive energy system integrates various forms of energy such as electricity, gas, cold, heat and the like in an area by utilizing the technologies of energy production, conversion, storage and the like, can improve the consumption rate of new energy and the comprehensive utilization rate of the energy, and is concerned. The operating strategy is the key to determining whether a system can operate with high quality. However, the new energy has uncertainty and volatility, and in addition, the energy output of the system is constrained by the energy coupling relationship of energy supply equipment, so that the energy supply and demand are easily mismatched, and the problems of energy waste, poor economy and the like are difficult to avoid.
The demand side response is matched with energy supply by actively regulating the original energy using mode and reducing or shifting the load of a certain period of time. However, the current demand response mostly takes the electric load as a main part, few researches consider the regulation and control of the heat/cold load, and the coupling relation among the energies is not fully utilized to realize the efficient matching of the energies.
In addition, most of the current demand side response researches carry out load peak clipping and valley filling by time-of-use electricity price and incentive policy response, but the matching relation with an energy supply policy is not considered, particularly, the electricity and heat energy of a combined heat and power unit on the energy supply side have a coupling relation, and the demand side response carried out by the time-of-use electricity price and the incentive policy easily causes the problem of mismatching with the energy supply policy, and influences the system performance.
Disclosure of Invention
In order to overcome the defects of the prior art, the comprehensive energy system operation control method based on comprehensive demand side response is provided, the method utilizes the coupling relation among energy, and realizes efficient matching among system energy supply and demand by flexibly regulating and controlling electricity, cold and heat loads of a demand side so as to improve the system performance.
To achieve the above object, one or more embodiments of the present disclosure provide the following technical solutions:
in a first aspect, a method for controlling operation of an integrated energy system based on integrated demand side response is disclosed, comprising:
considering the participation of electricity, cold and heat loads in comprehensive demand side response, and constructing an energy balance model based on the structural composition of a comprehensive energy system;
obtaining an expression of coupling relation among different energies in the comprehensive energy system based on an energy balance model;
acquiring an energy output curve of the thermoelectric generator set by using the coupling relation among energies, and dividing user requirements into different types according to the energy output curve of the thermoelectric generator set;
and according to the division of the load types, based on the comprehensive demand side response model and the energy balance model, respectively formulating corresponding equipment operation and demand side response strategies.
In the further technical scheme, in the comprehensive energy system, the electric load is satisfied by a photovoltaic unit, a thermoelectric unit and a power grid; the cold load is satisfied by the electric refrigerator, the absorption refrigerator and the cold accumulation equipment; the heat load is satisfied by a gas boiler, a thermoelectric unit and a heat storage device; and the electricity, cold and heat loads participate in comprehensive demand side response.
According to a further technical scheme, the energy balance model comprises an electric energy balance relation, a heat energy balance relation and a cold energy balance relation.
According to the further technical scheme, the electric load, the cold load and the heat load of a user on the demand side are all composed of a fixed load and an adjustable load, and the adjustable electric load is composed of a translational load and a cutting load.
Further, the technical scheme can be used for scheduling a certain constraint condition which needs to be met by the electric load.
According to the further technical scheme, the user requirements can be divided into different types according to the energy output curve of the thermoelectric generator set, and the method comprises the following steps:
type 1: thermal load > waste heat output, electrical load < minimum electrical output;
type 2: thermal load > waste heat output, lowest electrical output < electrical load < rated electrical power;
type 3: thermal load < waste heat output, electrical load > minimum electrical output;
type 4: heat load < minimum waste heat output, electrical load < minimum electrical output;
type 5: thermal load < minimum waste heat output, electrical load > minimum electrical output;
type 6: thermal load > maximum waste heat output, electrical load > rated electric power.
According to a further technical scheme, the equipment operation and demand side response strategy comprises the following steps:
reducing cold/heat load, closing the unit, starting the electric refrigerator and the gas boiler to meet the cold/heat load, discharging energy from the energy storage equipment, and supplying the electric load by a power grid;
reducing cold/heat load, moving into electric load, operating the unit according to a tracking electric demand mode, and simultaneously increasing the electric load to supply the cold load by utilizing the electric cooling-to-cold characteristic of an electric refrigerator, so that the energy output of the thermoelectric unit is matched with the electric heat load;
shifting out or reducing the electric load, increasing the cold/heat load, and operating the unit according to a tracking electric demand mode, so that the energy output of the thermoelectric unit is matched with the electric heat load;
the unit is shut down, the electric load is met by the power grid, the heat load is supplied by the boiler, and the cold load is supplied by the electric refrigerator;
on the basis of reducing the electric load, the unit operates according to a tracking electric demand mode, and redundant cold/heat energy is stored for load use;
on the basis of reducing electricity, heat and cold loads, the unit operates according to rated power, the residual electric load is supplemented by a power grid, the heat load is supplemented by a boiler, and the cold load is supplemented by an electric refrigerator.
In a second aspect, an integrated energy system operation control system based on integrated demand side response is disclosed, comprising:
an energy balance model building module configured to: considering the participation of electricity, cold and heat loads in comprehensive demand side response, and constructing an energy balance model based on the structural composition of a comprehensive energy system;
a coupling relationship obtaining module between energies configured to: obtaining an expression of coupling relation among different energies in the comprehensive energy system based on an energy balance model;
a user demand type division module configured to: acquiring an energy output curve of the thermoelectric generator set by using the coupling relation among energies, and dividing user requirements into different types according to the energy output curve of the thermoelectric generator set;
a policy making module configured to: and according to the division of the load types, based on the comprehensive demand side response model and the energy balance model, respectively formulating corresponding equipment operation and demand side response strategies.
The above one or more technical solutions have the following beneficial effects:
the invention relates to a comprehensive energy system operation control method based on comprehensive demand side response, which analyzes the coupling relation among different energies of a comprehensive energy system, divides energy loads into 6 different types by utilizing an energy output curve of cogeneration equipment, and establishes demand side response strategies and system energy supply strategies under different load types based on a comprehensive demand side response model and an energy balance model to realize efficient matching of system energy output and energy loads.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
FIG. 1 is a block diagram of an integrated energy system according to an embodiment of the present disclosure;
fig. 2 is a graph of energy output of the cogeneration unit in accordance with the embodiments of the present disclosure.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example one
The embodiment discloses a comprehensive energy system operation control method based on comprehensive demand side response, which analyzes the coupling relation among different energies of a comprehensive energy system, divides energy loads into 6 different types by using an energy output curve of cogeneration equipment, and formulates demand side response strategies and system energy supply strategies under different load types based on a comprehensive demand side response model and an energy balance model to realize efficient matching of system energy output and energy loads.
The steps of efficient matching include:
and analyzing the coupling relation among the electricity, heat and cold energy of the comprehensive energy system and the supply and demand energy balance relation.
And (4) making a system operation strategy, preferentially using new energy to generate power, and then utilizing a combined cooling, heating and power system to meet the residual electricity, heat and cold requirements.
According to the energy output of the cogeneration unit, the type of the user demand is judged, and then a corresponding demand side response strategy is formulated, so that the efficient matching between the energy supply and demand is realized.
The structure of the comprehensive energy system in the embodiment of the present disclosure is shown in fig. 1, and the system is composed of a new energy power generation system, a combined cooling heating and power system, and an energy storage system. The electric load is satisfied by the photovoltaic power generation unit, the thermoelectric power generation unit and the power grid; the cold load is satisfied by the electric refrigerator, the absorption refrigerator and the cold accumulation equipment; the heat load is satisfied by a gas boiler, a thermoelectric unit and a heat storage device; and the electricity, cold and heat loads participate in comprehensive demand side response.
The integrated energy system of the present disclosure is a general integrated energy system that includes a cogeneration unit and that takes into account the integrated demand side response.
In order to implement the method, the following steps are specifically required:
constructing an energy balance model:
the analysis of the energy flow balance relation of the system in the stable operation state is a precondition for formulating an operation strategy. The electric energy balance relationship of the system is as follows:
E load (t)+E ec (t)＝E pv (t)+E grid (t)+E pgu (t) (1)
in the formula, E load Is an electrical load; e ec Inputting power for the electric refrigerator; e pv The photovoltaic output power; e wp Is wind power; e pgu Outputting power for the thermoelectric unit; e grid For power interaction with the grid, time of purchase (E) grid >0) Time of sale of electricity (E) grid <0)。
The heat energy balance relationship of the system is as follows:
H load (t)＝Q gb (t)+Q hr (t)+Q hs (t) (2)
in the formula, H load Is a thermal load; q hr As a residual heatRecovering power; q gb Outputting thermal power for the gas boiler; q hs For input/output power of heat storage water tank, while outputting (Q) hs >0) At input (Q) hs <0)。
The cold energy balance relationship of the system is as follows:
C load (t)＝Q ac (t)+Q ec (t)+Q cs (t) (3)
in the formula, C load Is a cold load; q ac The refrigeration power of the absorption refrigerator; q ec The refrigeration power of the electric refrigerator; q cs For input/output power, output time (Q) of cold storage device cs >0) At input (Q) cs <0)。
The energy storage equipment comprises:
Q sta (t+1)＝η s Q sta (t)-Q s (t) (4)
in the formula, Q sta (t + 1) and Q sta (t) the energy storage states of the energy storage equipment at the moment t +1 and the moment t respectively; eta s Is the efficiency of the energy storage device. The relation of the energy storage devices is used for carrying out energy balance analysis of the system and making an energy supply strategy.
And obtaining an energy coupling characteristic for formulating a thermoelectric coupling output full line of the combined supply unit so as to judge the type of the user demand and further formulate a demand response strategy.
The integrated energy system includes energy production, conversion and storage facilities, the presence of which allows for coupling relationships between different energies.
The gas boiler is a gas-heat conversion device, and the gas consumption F at the moment t gb Comprises the following steps:
in the formula eta gb Is the thermal efficiency of the gas boiler.
The absorption refrigerator is a heat-cold conversion device and outputs power Q at time t ac Comprises the following steps:
Q ac (t)＝Q hr (t)COP ac (6)
in the formula, COP ac Is the energy efficiency ratio of the absorption chiller.
The electric refrigerator is an electric-cooling conversion device, and electric power E is input at time t ec Comprises the following steps:
in the formula, COP ec The energy efficiency ratio of the electric refrigerator.
The cogeneration unit is the core equipment of the comprehensive energy system, and the formulation of the operation strategy influences the operation efficiency of the whole system. The unit is a thermoelectric coupling device, and supplies heat energy while producing electric energy, and the gas consumption F of the unit at the moment t pgu Comprises the following steps:
in the formula eta e,pgu And the generating efficiency of the unit at the moment t is shown.
In the formula, PLR pgu The load rate of the unit is as follows:
in the formula, N pgu The rated power of the generator set.
Waste heat recovery power Q at time t hr Comprises the following steps:
Q hr (t)＝F pgu (t)(1-η e,pgu (t))η hr (11)
in the formula eta hr The waste heat recovery power is at the moment t. the thermoelectric output ratio theta of the unit at the time t is as follows:
constructing a comprehensive demand side response model:
the user electricity, cold and heat loads on the demand side are all composed of fixed loads and schedulable loads, and the schedulable electricity load is composed of a translatable load and a schedulable load:
E load,new (t)＝E load,old (t)+E conload (t)-E cutload (t) (13)
in the formula, E load,new And E load,new Electrical loads before and after response, respectively, E conload For shifting electrical loads (load shifting-out: E) conload >0; load shifting: e conload ＜0)，E cutload To reduce the electric load. The dispatchable electrical load needs to satisfy the following constraints:
-αE load,old (t)≤E conload (t)≤αE load,old (t) (14)
0≤E cutload (t)≤βE load,old (t) (16)
wherein, alpha is the proportion of the translatable electric load to the total load; beta is the proportion of electric load to total load which can be reduced; the scheduling period T is 24h; the time interval Δ t is 1h.
Since the user's cold/heat load is not translatable, but can be adjusted within a certain comfort range, the cold/heat load can be scheduled to be an increased or decreased load (taking heat load as an example):
H load,new (t)＝H load,old (t)+H conload (t) (17)
in the formula, H load,new And H load,new Thermal loads before and after response, H conload To increase/decrease the thermal load, the following constraints need to be satisfied:
-δH load,old (t)≤H cutload (t)≤δH load,old (t) (18)
where δ is the ratio of the schedulable thermal load to the total load.
The above equations 13-18 are demand side response models that take into account both the translatable and curtailable nature of the electrical demand, as well as the increasable or curtailable nature of the heat and cold demands.
Making an operation strategy based on comprehensive demand side response:
the energy output of the cogeneration unit is shown in figure 2. The curve is an energy output curve of the cogeneration unit operating in the optimal state and is used for judging the type of the user demand, the curve in the graph represents the energy output curve of the cogeneration unit, the horizontal axis represents electric energy output, and the vertical axis represents waste heat output, and when the load rate of the unit is lower than 0.2, the power generation efficiency is very low (corresponding to the lowest heat energy output and the lowest electric energy output at this time), so that the unit is not started at this time. When an operation strategy of the comprehensive energy system is formulated, the new energy is preferentially utilized for power generation to ensure the consumption rate of the new energy, and then the output plan of the combined cooling, heating and power system is formulated to meet the residual electricity, heat and cold requirements. Since both the cold energy output and the heat load of the absorption chiller are supplied by the recovered unit waste heat, both the heat load and the cold load are converted into a waste heat load. As shown in fig. 2, the user demand can be divided into 6 types according to the energy output curve of the thermoelectric power unit:
type 1: thermal load > waste heat output, electrical load < minimum electrical output;
type 2: thermal load > waste heat output, lowest electrical output < electrical load < rated electrical power;
type 3: thermal load < waste heat output, electrical load > minimum electrical output;
type 4: heat load < minimum waste heat output, electrical load < minimum electrical output;
type 5: thermal load < minimum waste heat output, electrical load > minimum electrical output;
type 6: the heat load is greater than the maximum waste heat output, and the electric load is greater than the rated electric power;
according to the division of the above 6 types of loads, based on the comprehensive demand side response model and the energy balance model, respectively formulating corresponding equipment operation and demand side response strategies:
the specific strategy is used for realizing the matching of the energy supply strategy and the user requirements and is in one-to-one correspondence with the user types, namely the load type 1 corresponds to the strategy 1. The condition of use is that the corresponding load type is satisfied.
Strategy 1: reducing cold/heat load, closing the unit, starting the electric refrigerator and the gas boiler to meet the cold/heat load, discharging energy from the energy storage equipment, and supplying the electric load by a power grid;
strategy 2: cutting down cold/heat load, moving into electric load, operating the unit according to the tracking electric demand mode, and simultaneously increasing the electric load to supply the cold load by utilizing the electric cooling transfer characteristic of the electric refrigerator, so that the energy output of the thermoelectric unit is matched with the electric heating load, as shown by point A → A';
strategy 3: shifting out or reducing the electrical load, increasing the cold/heat load, and operating the unit in a tracking electrical demand mode, thereby matching the energy output of the thermoelectric unit with the electrical heat load, as shown by point B';
strategy 4: the unit is shut down, the electric load is met by the power grid, the heat load is supplied by the boiler, and the cold load is supplied by the electric refrigerator;
strategy 5: on the basis of reducing the electric load, the unit operates according to a tracking electric demand mode, and redundant cold/heat energy is stored for the load type 1 to use;
strategy 6: on the basis of reducing electricity, heat and cold loads, the unit operates according to rated power, the residual electric load is supplemented by a power grid, the heat load is supplemented by a boiler, and the cold load is supplemented by an electric refrigerator.
Example two
It is an object of this embodiment to provide a computing device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the program.
EXAMPLE III
An object of the present embodiment is to provide a computer-readable storage medium.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
The steps involved in the apparatuses of the above second, third and fourth embodiments correspond to the first embodiment of the method, and the detailed description thereof can be found in the relevant description of the first embodiment. The term "computer-readable storage medium" should be taken to include a single medium or multiple media containing one or more sets of instructions; it should also be understood to include any medium that is capable of storing, encoding or carrying a set of instructions for execution by a processor and that cause the processor to perform any of the methods of the present disclosure.
Those skilled in the art will appreciate that the modules or steps of the present disclosure described above can be implemented using general purpose computer means, or alternatively, they can be implemented using program code executable by computing means, whereby the modules or steps may be stored in memory means for execution by the computing means, or separately fabricated into individual integrated circuit modules, or multiple modules or steps thereof may be fabricated into a single integrated circuit module. The present disclosure is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (6)
1. The comprehensive energy system operation control method based on comprehensive demand side response is characterized by comprising the following steps of:
considering the participation of electricity, cold and heat loads in comprehensive demand side response, and constructing an energy balance model based on the structural composition of a comprehensive energy system; the energy balance model comprises an electric energy balance relation, a heat energy balance relation and a cold energy balance relation;
based on an energy balance model, obtaining a coupling relation existing among different energies in the comprehensive energy system;
by utilizing the coupling relation, an energy output curve of the thermoelectric unit is obtained, and user requirements are divided into different load types according to the energy output curve of the thermoelectric unit, wherein the method comprises the following steps:
type 1: thermal load
Residual heat output and electric load->
A minimum electrical output;
type 2: thermal load
Residual heat output and lowest electric output->
Electric load->
Rated electric power;
type 3: thermal load
Residual heat output and electric load->
A minimum electrical output;
type 4: thermal load
Minimum residual heat output and electric load->
A minimum electrical output;
type 5: thermal load
Minimum residual heat output and electric load->
A minimum electrical output;
type 6: thermal load
Maximum residual heat output, electric load->
Rated electric power;
the energy output curve of the thermoelectric power unit is an energy output curve of the thermoelectric cogeneration unit running in the optimal state;
constructing a comprehensive demand side response model, wherein the comprehensive demand side response model comprises schedulable loads, and the schedulable loads comprise schedulable electric loads and schedulable cold or heat loads;
the dispatchable electrical load is composed of a translatable load and a reducible load:
in the formula (I), the compound is shown in the specification,E load,old andE load,new electrical loads before and after the response respectively,E conload in order to be able to displace the electrical load,E cutload to reduce the electrical load;
the dispatchable electrical load needs to satisfy the following constraints:
wherein, alpha is the proportion of the translatable electrical load to the total load;βthe proportion of the electric load to the total load can be reduced;Tis a scheduling period;
is a time interval;
the thermal load may be scheduled to be an increased or decreased load, or the cold load may be scheduled to be an increased or decreased load:
in the formula (I), the compound is shown in the specification,H load,old in response to a cold or heat load before the load,H load,new in response to a subsequent cold or heat load,H conload to increase or decrease the thermal load, or,H conload to increase or decrease the cooling load, the following constraints need to be satisfied:
in the formula (I), the compound is shown in the specification,δthe proportion of the schedulable cold or heat load to the total load;
according to the division of the load types, respectively making equipment operation and demand side response strategies corresponding to the load types one by one on the basis of a comprehensive demand side response model and an energy balance model, wherein the equipment operation and demand side response strategies comprise:
strategy 1: reducing cold or heat load, closing the unit, starting the electric refrigerator and the gas boiler to meet the cold or heat load, discharging energy from the energy storage equipment, and supplying the electric load by a power grid;
strategy 2: reducing cold or heat load, moving in electric load, operating the unit according to a tracking electric demand mode, and simultaneously increasing the electric load to supply the cold load by utilizing the electric cooling conversion characteristic of the electric refrigerator, so that the energy output of the thermoelectric unit is matched with the electric heating load;
strategy 3: shifting out or reducing the electric load, increasing the cold or heat load, and operating the unit according to a tracking electric demand mode, so that the energy output of the thermoelectric unit is matched with the electric heat load;
strategy 4: the unit is shut down, the electric load is met by the power grid, the heat load is supplied by the boiler, and the cold load is supplied by the electric refrigerator;
strategy 5: on the basis of reducing the electric load, the unit operates according to a tracking electric demand mode, and redundant cold or heat energy is stored for load use;
strategy 6: on the basis of reducing electricity, heat and cold loads, the unit operates according to rated power, the residual electric load is supplemented by a power grid, the heat load is supplemented by a boiler, and the cold load is supplemented by an electric refrigerator.
2. The integrated energy system operation control method based on integrated demand side response of claim 1, wherein in the integrated energy system, the electric load is satisfied by a photovoltaic unit, a thermoelectric unit and a power grid; the cold load is satisfied by the electric refrigerator, the absorption refrigerator and the cold accumulation equipment; the heat load is satisfied by a gas boiler, a thermoelectric unit and a heat storage device; and the electricity, cold and heat loads participate in comprehensive demand side response.
3. The integrated energy system operation control method based on integrated demand side response of claim 1 wherein certain constraints that the electrical load needs to meet are schedulable.
4. Comprehensive energy system operation control system based on synthesize demand side response, characterized by includes:
an energy balance model building module configured to: considering the participation of electricity, cold and heat loads in comprehensive demand side response, and constructing an energy balance model based on the structural composition of a comprehensive energy system; the energy balance model comprises an electric energy balance relation, a heat energy balance relation and a cold energy balance relation;
a coupling relationship obtaining module between energies configured to: based on an energy balance model, obtaining a coupling relation existing among different energies in the comprehensive energy system;
a user demand type division module configured to: by utilizing the coupling relation, an energy output curve of the thermoelectric unit is obtained, and user requirements are divided into different load types according to the energy output curve of the thermoelectric unit, wherein the method comprises the following steps:
type 1: thermal load
Residual heat output and electric load->
A minimum electrical output;
type 2: thermal load
Residual heat output and lowest electric output->
Electric load>
Rated electric power;
type 3: thermal load
Residual heat output and electric load->
A minimum electrical output;
type 4: thermal load
Minimum residual heat output and electric load->
A minimum electrical output;
type 5: thermal load
Minimum residual heat output and electric load->
A minimum electrical output;
type 6: thermal load
Maximum residual heat output, electric load->
Rated electric power;
the energy output curve of the thermoelectric power unit is an energy output curve of the thermoelectric cogeneration unit running in the optimal state;
constructing a comprehensive demand side response model, wherein the comprehensive demand side response model comprises schedulable loads, and the schedulable loads comprise schedulable electric loads and schedulable cold or heat loads;
the dispatchable electrical load is composed of a translatable load and a reducible load:
in the formula (I), the compound is shown in the specification,E load,old andE load,new electrical loads before and after the response respectively,E conload in order to be able to translate the electrical load,E cutload to reduce the electrical load;
the dispatchable electrical load needs to satisfy the following constraints:
wherein, alpha is the proportion of the translatable electrical load to the total load;βthe proportion of the electric load to the total load can be reduced;Tis a scheduling period;
is a time interval;
the thermal load may be scheduled to be an increased or decreased load, or the cold load may be scheduled to be an increased or decreased load:
in the formula (I), the compound is shown in the specification,H load,old in response to a cold or heat load prior to,H load,new in response to a subsequent cold or heat load,H conload to increase or decrease the thermal load, or,H conload to increase or decrease the cooling load, the following constraints need to be satisfied:
in the formula (I), the compound is shown in the specification,δthe proportion of the schedulable cold or heat load to the total load;
a policy making module configured to: according to the division of the load types, respectively making equipment operation and demand side response strategies corresponding to the load types one by one on the basis of a comprehensive demand side response model and an energy balance model, wherein the equipment operation and demand side response strategies comprise:
strategy 1: reducing cold or heat load, closing the unit, starting the electric refrigerator and the gas boiler to meet the cold or heat load, discharging energy from the energy storage equipment, and supplying the electric load by a power grid;
strategy 2: reducing cold or heat load, moving into electric load, operating the unit according to the tracking electric demand mode, and simultaneously increasing the electric load to supply cold load by utilizing the electric cooling-to-cold characteristic of the electric refrigerator, so that the energy output of the thermoelectric unit is matched with the electric heat load;
strategy 3: shifting out or reducing the electric load, increasing the cold or heat load, and operating the unit according to a tracking electric demand mode, so that the energy output of the thermoelectric unit is matched with the electric heat load;
strategy 4: the unit is shut down, the electric load is met by the power grid, the heat load is supplied by the boiler, and the cold load is supplied by the electric refrigerator;
strategy 5: on the basis of reducing the electric load, the unit operates according to a tracking electric demand mode, and redundant cold or heat energy is stored for load use;
strategy 6: on the basis of reducing electricity, heat and cold loads, the unit operates according to rated power, the residual electric load is supplemented by a power grid, the heat load is supplemented by a boiler, and the cold load is supplemented by an electric refrigerator.
5. A computing device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the method of any of claims 1 to 3 are performed by the processor when executing the program.
6. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the claims 1 to 3.
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