CN109190988B - Demand side response game method for realizing optimal coordination of temperature control load - Google Patents
Demand side response game method for realizing optimal coordination of temperature control load Download PDFInfo
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- CN109190988B CN109190988B CN201811057764.9A CN201811057764A CN109190988B CN 109190988 B CN109190988 B CN 109190988B CN 201811057764 A CN201811057764 A CN 201811057764A CN 109190988 B CN109190988 B CN 109190988B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q10/063—Operations research, analysis or management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06Q50/06—Electricity, gas or water supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
Abstract
The invention discloses a demand side response game method for realizing optimal coordination of temperature control loads, which establishes a demand side temperature control load game method, fully excavates and utilizes the energy storage characteristic of the temperature control loads, aims at minimizing the power expenditure of individual loads, reasonably distributes the load power of each time period and can improve the efficiency of demand side electric energy supply. The method can reduce the power consumption expenditure of each user and improve the flexibility of power supply of the demand side.
Description
Technical Field
The invention belongs to the technical field of power systems and smart power grids, and relates to a demand side response game method for realizing optimal coordination of temperature control loads.
Background
With the progress of power grid intellectualization, demand side response becomes a hot spot in the field of future smart power grid research. The existing demand side response project is used for mining the scheduling potential of temperature control loads (such as air conditioners, heat pumps and other loads) with energy storage characteristics, so that certain auxiliary service can be provided for a power grid on the premise of not influencing the power utilization satisfaction of users, and the power grid is helped to operate safely and stably in an efficient manner. However, the complex user behaviors faced by the demand side response and the reward distribution among user individuals to the user side response effect bring uncertain factors, the existing demand response method cannot meet the dispatching demand of the power grid, and a demand side response method for realizing optimal coordination of temperature control load is urgently needed.
Disclosure of Invention
The invention aims to provide a demand side response game method for realizing optimal coordination of temperature control loads.
In order to achieve the purpose, the invention adopts the technical scheme that:
a demand side response game method for realizing optimal coordination of temperature control loads comprises the following steps:
Step 2, solving the multi-time scale minimum power utilization cost optimization problem of the temperature control load to obtain a new power utilization strategy set
Step 3, judgmentIf yes, go to step 4, if not, updateAnd sending a new strategy to other temperature control loads;
step 4, judging whether other temperature control load power utilization strategies are updated, if so, turning to the step 5, otherwise, outputtingFinishing;
step 5, receiving and updating the power utilization strategies after updating other temperature control loadsTurning to step 2 until outputAnd (6) ending.
In the demand side response game method for realizing the optimal coordination of the temperature control load, in step 1:
for the kth temperature control load, the initial value of the problem is optimizedThe current temperature is taken as a standard;
for the k-th temperature controlled load,representing the minimum electricity cost electricity utilization strategy set of a single temperature control load in N optimization stages:
(1) in the formulaThe power value of the kth temperature-controlled load in the nth optimization stage is shown.
The total power of the other temperature control loads except the kth temperature control load is expressed as follows:
(2) wherein K represents the total temperature control load number.
In the demand side response game method for realizing the optimal coordination of the temperature control load, the step 2 comprises the following steps:
step 2.1, determining an objective function of the minimum electricity cost of the single temperature control load multi-time scale minimum electricity cost optimization problem:
(3) in the formulaRepresenting the total power of other temperature control loads except the kth temperature control load; cn(. is) a total cost function of demand side loads, typically generator fuel cost function, in the nth optimization stage;is the electricity cost of the kth temperature control load in the nth optimization stage; h is the actual duration of the optimization time per stage.
Step 2.2, determining the constraint conditions of the single temperature control load multi-time scale minimum electricity consumption cost optimization problem:
(4) in the formulaIs the initial temperature value of the kth temperature control load in the nth optimization stage; respectively indicating that the temperature control load meets the minimum and maximum electric power consumption of a comfortable temperature interval required by a user under the temperature initial value;representing the maximum power of the kth temperature controlled load. In summary, the power value of the kth temperature control load in the nth optimization stage expressed by the formula (2)The requirements of the current comfortable temperature range and the electrical characteristics of the load should be met at the same time.
(5) Wherein G (-) represents the temperature control load transfer function and can pass through the temperature initial value in the nth optimization stageAnd power valueDeducing the initial temperature value of the next optimization stageIs represented as follows:
(6) wherein C represents the heat capacity of the object on which the temperature control load acts, and if the air conditioner acts to adjust the indoor temperature, C corresponds to the total heat capacity of the indoor air; h represents the thermal resistance of the heat exchange between the temperature control load acting object and the external environment, the energy of the heat exchange is in direct proportion to the difference value of the internal temperature and the external temperature, and the thermal resistance H is a direct proportion coefficient; t isextRepresents the ambient temperature; kEThe energy efficiency ratio of the temperature control load is represented and is the ratio of electric power to cooling/heating utility power.
Step 2.3, solving the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load:
the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load can be quickly solved by a dynamic programming method. The bellman equation for dynamic programming is as follows:
(7) in the formulaThe equation represents the total cost function from the beginning of the nth optimization phase to the end of the nth optimization phase. Simultaneously assuming the initial value of the reverse calculation of the dynamic programming
The invention has the following beneficial effects: the method is a demand side response game method which can give full play to the potential of temperature control load in the background of an intelligent power grid; the demand side response game method fully excavates and utilizes the energy storage characteristic of the temperature control load; the method not only reduces the electricity consumption expenditure of each user, but also improves the flexibility of the electric energy supply of the demand side.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention.
Detailed Description
As shown in fig. 1, the demand side response game method for realizing optimal coordination of temperature controlled loads of the present invention includes the following steps:
Step 2, solving the multi-time scale minimum power utilization cost optimization problem of the temperature control load to obtain a new power utilization strategy set
Step 3, judgmentIf yes, go to step 4, if not, updateAnd sending a new strategy to other temperature control loads;
step 4, judging whether other temperature control load power utilization strategies are updated, if so, turning to the step 5, otherwise, outputtingFinishing;
step 5, receiving and updating the power utilization strategies after updating other temperature control loadsTurning to step 2 until outputAnd (6) ending.
In the demand side response game method for realizing the optimal coordination of the temperature control load, in step 1:
for the kth temperature control load, the initial value of the problem is optimizedThe current temperature is taken as a standard;
for the k-th temperature controlled load,representing the minimum electricity cost electricity utilization strategy set of a single temperature control load in N optimization stages:
(1) in the formulaThe power value of the kth temperature-controlled load in the nth optimization stage is shown.
The total power of the other temperature control loads except the kth temperature control load is expressed as follows:
(2) wherein K represents the total temperature control load number.
In the demand side response game method for realizing the optimal coordination of the temperature control load, the step 2 comprises the following steps:
step 2.1, determining an objective function of the minimum electricity cost of the single temperature control load multi-time scale minimum electricity cost optimization problem:
(3) in the formulaRepresenting the total power of other temperature control loads except the kth temperature control load; cn(. is) a total cost function of demand side loads, typically generator fuel cost function, in the nth optimization stage;is the electricity cost of the kth temperature control load in the nth optimization stage; h is the actual duration of the optimization time per stage.
Step 2.2, determining the constraint conditions of the single temperature control load multi-time scale minimum electricity consumption cost optimization problem:
(4) in the formulaIs the initial temperature value of the kth temperature control load in the nth optimization stage; respectively indicating that the temperature control load meets the minimum and maximum electric power consumption of a comfortable temperature interval required by a user under the temperature initial value;representing the maximum power of the kth temperature controlled load. In summary, the power value of the kth temperature control load in the nth optimization stage expressed by the formula (2)The requirements of the current comfortable temperature range and the electrical characteristics of the load should be met at the same time.
(5) Wherein G (-) represents the temperature control load transfer function and can pass through the temperature initial value in the nth optimization stageAnd power valueDeducing the initial temperature value of the next optimization stageIs represented as follows:
(6) wherein C represents the heat capacity of the object on which the temperature control load acts, and if the air conditioner acts to adjust the indoor temperature, C corresponds to the total heat capacity of the indoor air; h represents the thermal resistance of the heat exchange between the temperature control load acting object and the external environment, the energy of the heat exchange is in direct proportion to the difference value of the internal temperature and the external temperature, and the thermal resistance H is a direct proportion coefficient; t isextRepresents the ambient temperature; kEThe energy efficiency ratio of the temperature control load is represented and is the ratio of electric power to cooling/heating utility power.
Step 2.3, solving the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load:
the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load can be quickly solved by a dynamic programming method. The bellman equation for dynamic programming is as follows:
Claims (3)
1. A demand side response game method for realizing optimal coordination of temperature control loads is characterized by comprising the following steps:
step 1, initializing temperature initial values of all temperature control loadsPower utilization policy setAnd corresponding Represents the minimum electricity cost electricity utilization strategy set in N optimization stages for the kth temperature control load,representing the total power of other temperature control loads except the kth temperature control load;
step 2, solving the multi-time scale minimum power utilization cost optimization problem of the temperature control load to obtain a new power utilization strategy set
Step 3, judgmentIf yes, go to step 4, if not, updateAnd sending a new strategy to other temperature control loads;
step 4, judging whether other temperature control load power utilization strategies are updated, if so, turning to the step 5, otherwise, outputtingFinishing;
step 5, receiving and updating the power utilization strategies after updating other temperature control loadsTurning to step 2 until outputEnd up;
The step 2 is realized as follows:
step 2.1, determining an objective function of the minimum electricity cost of the single temperature control load multi-time scale minimum electricity cost optimization problem:
(1) in the formulaRepresenting the total power of other temperature control loads except the kth temperature control load; cn(. h) is a total cost function of demand side loads in the nth optimization stage, which is a generator fuel cost function;is the electricity cost of the kth temperature control load in the nth optimization stage; h is the actual duration of each stage of optimization time;
step 2.2, determining the constraint conditions of the single temperature control load multi-time scale minimum electricity consumption cost optimization problem:
(2) in the formulaIs the initial temperature value of the kth temperature control load in the nth optimization stage; respectively indicating that the temperature control load meets the minimum and maximum electric power consumption of a comfortable temperature interval required by a user under the temperature initial value;represents the maximum power of the kth temperature-controlled load;
(3) wherein G (-) represents the temperature controlled load transfer function by the temperature initial value in the nth optimization stageAnd power valueDeducing the initial temperature value of the next optimization stageIs represented as follows:
(4) wherein C represents the heat capacity of the object on which the temperature control load acts, and C corresponds to the total heat capacity of the indoor air when the air conditioner acts to adjust the indoor temperature; h represents the thermal resistance of the heat exchange between the temperature control load acting object and the external environment, the energy of the heat exchange is in direct proportion to the difference value of the internal temperature and the external temperature, and the thermal resistance H is a direct proportion coefficient; t isextRepresents the ambient temperature; kERepresenting the energy efficiency ratio of the temperature control load, which is the ratio of electric power to refrigeration/heating utility power;
step 2.3, solving the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load:
the multi-time scale minimum electricity consumption cost optimization problem of a single temperature control load can be quickly solved by a dynamic programming method, and the Bellman equation of the dynamic programming is as follows:
3. The demand-side responsive gaming method for effecting optimal coordination of temperature controlled loads according to claim 1, wherein for a kth temperature controlled load,expressed as:
(6) in the formulaRepresenting the power value of the kth temperature control load in the nth optimization stage;
the total power of the other temperature control loads except the kth temperature control load is expressed as follows:
(7) wherein K represents the total temperature control load number.
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