A comprehensive energy community modeling method considering prosumer satisfaction

Abstract

The present invention proposes a comprehensive energy community modeling method that takes into account the satisfaction of producers and consumers, including: establishing an energy sharing model for producers and consumers, where producers and consumers sell or purchase energy from other users in the energy community based on their own energy supply and demand conditions; establishing an energy trading model for the comprehensive energy community, where the operator of the comprehensive energy community takes maximizing the overall benefit of the comprehensive energy community (minimizing the overall cost of the comprehensive energy community) as the goal, approves the energy sharing amount between producers and consumers, and respectively determines the energy equipment owned by the producers and consumers and the operator and the energy trading amount with the upstream energy system; establishing a production and consumer user satisfaction function definition model, where producers and consumers define the relationship between their satisfaction and the additional profit they can obtain after participating in the comprehensive energy community; establishing a comprehensive energy community total satisfaction maximization model, where the operator of the comprehensive energy community, after deducting the equipment operating costs and their expected profits, takes maximizing the satisfaction of all its internal producers and consumers as the goal, and distributes the remaining benefits to each producer and consumer.

Description

Technical Field

[0001] This invention relates to the field of optimized operation of integrated energy systems, and more specifically, to the field of market optimization participation in integrated energy communities. Background Technology

[0002] With the continuous integration of distributed energy resources, traditional passive consumers are now becoming active prosumers, capable of both producing and consuming energy. For example, consumers can achieve self-sufficiency in electricity by installing rooftop solar panels and sell surplus electricity to the grid. From a trading perspective, active prosumers can drive a demand-centric market mechanism to replace the traditional top-down vertical market mechanism. Because prosumers are typically small in scale, energy management for them often requires grouping individual prosumers into a collective. This collective usually also handles energy trading between its members and upstream energy systems, leveraging collective benefits to increase the profits of prosumers. Energy communities are one of the most typical concepts of such collectives.

[0003] The development of regional integrated energy systems has enabled the coupled operation of multiple energy sources, thus establishing the concept of integrated energy communities. Integrated energy communities typically possess various energy conversion and storage devices, and by expanding the scope of energy optimization and utilization among producers, consumers, and upstream energy systems, they enhance the overall efficiency of the integrated energy system. Summary of the Invention

[0004] The purpose of this invention is to construct a modeling method for integrated energy communities that considers the satisfaction of producers and consumers, thereby improving the operating profits of integrated energy communities and simultaneously encouraging the participation of producers and consumers. This invention comprises two parts: an integrated energy community profit calculation model and a producer-consumer profit distribution model. The integrated energy community profit calculation model is characterized by including a producer-consumer energy sharing model and an integrated energy community energy trading model. The producer-consumer profit distribution model is characterized by including a producer-consumer satisfaction function definition model and an integrated energy community overall satisfaction maximization model.

[0005] In the integrated energy community profit calculation model, the energy sharing model among producers and consumers refers to the practice where producers and consumers sell or purchase energy from other users in the energy community based on their own energy supply and demand, thus achieving energy sharing among producers and consumers. For energy that cannot be sold or purchased through transactions with other users, producers and consumers must transact with the integrated energy community operator and the energy equipment owned by the operator, or with the upstream energy system.

[0006] The integrated energy community energy trading model refers to the integrated energy community operator collecting transaction information between producers and consumers, as well as the transaction demands of producers and consumers with the energy equipment or upstream energy systems owned by the operator. With the goal of maximizing the overall benefits of the integrated energy community (minimizing the overall costs of the integrated energy community), the model approves the energy sharing volume between producers and consumers, and separately determines the energy transaction volume with the energy equipment owned by the operator and with the upstream energy systems.

[0007] In the profit distribution model for prosumer-consumer users, the defined model of the prosumer-consumer user satisfaction function refers to the relationship between the additional profits that prosumer-consumer users can obtain after participating in the integrated energy community and their level of satisfaction. The additional profits that prosumer-consumer users can obtain after participating in the integrated energy community mean that the profits they obtain after participating in the integrated energy community are higher than the profits they would obtain if they did not participate. The level of satisfaction refers to the degree of satisfaction that prosumer-consumer users define as being between 0% and 100% with the additional profits they obtain. When the satisfaction level of prosumer-consumer users is below 20%, there is a risk that the prosumer-consumer users will withdraw from the integrated energy community.

[0008] The aforementioned model for maximizing overall satisfaction in integrated energy communities refers to the integrated energy community operator distributing the remaining revenue to each user after deducting equipment operating costs and expected profits, with the goal of maximizing the overall satisfaction of all users within the community.

[0009] The integrated energy community operator possesses various energy devices within the integrated energy community, including combined heat and power units, electric boilers, heat pumps, electric energy storage devices, and thermal energy storage devices, forming an energy hub. Furthermore, the prosumers participating in the integrated energy community can install rooftop photovoltaic systems and have a certain demand response capability.

[0010] The model described in this invention comprises two parts: a comprehensive energy community profit calculation model and a profit distribution model for producers and consumers. The comprehensive energy community profit calculation model is characterized by including a producer-consumer energy sharing model and a comprehensive energy community energy trading model. The producer-consumer profit distribution model is characterized by including a producer-consumer satisfaction function definition model and a comprehensive energy community overall satisfaction maximization model.

[0011] Based on the energy sharing model for producers and consumers constructed in this invention, equation (1) calculates the electricity sharing amount (p) between producer and consumer i and other producer and consumer j. i,j,t ), the electricity load demand response of producers and consumers (Δp) i,t This includes the amount of electricity converted between producers and consumers and energy hubs, and the amount of electricity traded between producers and consumers and the higher-level power system. To consume the electricity load of user i, The rooftop photovoltaic output of producer-consumer user i is given, where t represents the time interval. Equation (1) distinguishes between the direction of electricity supply and purchase by producer-consumer user, [·] + and[·] - They represent / > The positive and negative parts. The electricity purchased by user i from the higher-level power system, / > Electricity sold by user i to the higher-level power system. For the electricity that user i obtains from the energy hub, / > The amount of electricity supplied by producer-consumer user i to the energy hub. Equation (2) calculates the amount of heat purchased by producer-consumer user i. In this embodiment, heat sharing between producer-consumer users is not considered; producer-consumer users only obtain heat from the energy hub. Or heat purchased from a higher-level heating system / > For the heat load of user i, Δh i,t The demand response to the heat load of user i is given by equations (3) and (4). Equations (3) and (4) limit the demand response capabilities of electrical and heat loads. and / > This represents the maximum value of the electrical load reduction and the thermal load reduction. Equations (5) and (6) restrict the variables to be non-negative.

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018] In the integrated energy community energy trading model constructed based on this invention, equation (7) represents the goal of the integrated energy community to minimize the total cost (maximize total revenue) of its owned energy hubs and the prosumers and consumers it operates. CO The total cost of an integrated energy community, The cost for each producer and consumer is calculated using equation (8). The price at which electricity is purchased from the higher-level power system, / > The price at which electricity is sold to the higher-level power system, / > The price for purchasing heat energy from the superior heating system, / > Cost of responding to electrical and thermal load demands. The cost of the energy hub is calculated using equation (9). The price at which the energy hub purchases natural gas from the upstream natural gas system, / > The amount of natural gas purchased by the energy hub from the upstream natural gas system is converted into electricity and heat energy through combined heat and power units and heat pumps. and / > The amount of electricity purchased and sold by the energy hub to the upper-level power system. Equation (10) analyzes the energy sharing of producers and consumers from an overall perspective, and the total energy supply of all producers and consumers should be equal to the total energy purchase of all producers and consumers. Equation (11) shows that the integrated energy community operator makes decisions based on the collection of energy sharing information of producers and consumers.

[0019]

[0020]

[0021]

[0022]

[0023] (1)-(6) (11)

[0024] Based on the producer-consumer user satisfaction function definition model constructed in this invention, the producer-consumer user defines their own satisfaction function through equation (12). This function describes the satisfaction level of producer-consumer user i (SATI). i The relationship between the additional profits that producers and consumers gain from participating in the integrated energy community and those they would gain if they did not participate, including additional profits from electricity trading. Extra profits from heat trading / > Equations (13)-(14) calculate the additional profits from trading electricity and heat. and / > The electricity and heat profits of producer-consumer user i when not participating in the integrated energy community can be obtained from their historical data before participation. The electricity profit of user i after participating in the integrated energy community is calculated by equation (15), where in equation (15) / > The cost of sharing electricity per unit, The amount of shared electricity is calculated using equation (16). The heat energy profit of user i after participating in the energy community is calculated by equation (17), where in equation (17) / > The cost of obtaining a unit of heat from an energy hub, / > The heat obtained from the energy hub is calculated using equation (18). Equation (19) indicates that the satisfaction function must satisfy the condition when... The satisfaction rate of prosumer users is 0%. Equation (20) shows that each user hopes to achieve a satisfaction rate of more than 20%, and the maximum satisfaction rate is 100%.

[0025]

[0026]

[0027] / >

[0028]

[0029]

[0030]

[0031]

[0032]

[0033]

[0034] In the integrated energy community overall satisfaction maximization model constructed based on this invention, equation (21) represents the profit allocated by the integrated energy community with the objective of maximizing the overall satisfaction of producers and consumers. Equation (22) indicates that the total operating cost of the energy hub in the integrated energy community plus its expected profit needs to be higher than a certain value. Equation (23) shows that the integrated energy community operator distributes benefits based on the collection of user satisfaction functions.

[0035]

[0036]

[0037] (12)-(20) (23)

[0038] The above establishes a calculation model for integrated energy communities that considers the satisfaction of producers and consumers. Through the integrated energy community profit calculation model, the profitability of integrated energy communities is maximized. Through the producer-consumer profit distribution model, the profits of integrated energy communities are distributed based on the satisfaction of producers and consumers.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The integrated energy community model established in this invention maximizes the profitability of the integrated energy community through a profit calculation model and allocates profits based on user satisfaction through a profit distribution model. This invention can simultaneously maximize the overall economic benefits of the integrated energy community and the overall user satisfaction, enabling the integrated energy community to maintain a reliable user base while pursuing profitability. Attached image description:

[0041] Figure 1 Model Structure Detailed implementation method:

[0042] The specific embodiments of the present invention will be described in detail below with reference to specific examples. These examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0043] Integrated energy community operators possess various energy devices within their communities, including combined heat and power (CHP) units, electric boilers, heat pumps, electric energy storage devices, and thermal energy storage devices, which together form an energy hub. Prosumers participating in the integrated energy community install rooftop solar panels and have a certain degree of demand response capability.

[0044] This invention comprises two parts: a profit calculation model for an integrated energy community and a profit distribution model for producers and consumers. The profit calculation model for the integrated energy community is characterized by including an energy sharing model for producers and consumers and an energy trading model for the integrated energy community. The profit distribution model for producers and consumers is characterized by including a satisfaction function definition model for producers and consumers and a model for maximizing the overall satisfaction of the integrated energy community.

[0045] In the energy sharing model for producers and consumers constructed in this embodiment, equation (1) calculates the electricity sharing amount (p) between producer and consumer i and other producer and consumer j. i,j,t ), the electricity load demand response of producers and consumers (Δp) i,t This includes the amount of electricity converted between producers and consumers and energy hubs, and the amount of electricity traded between producers and consumers and the higher-level power system. To consume the electricity load of user i, The rooftop photovoltaic output of producer-consumer user i is given, where t represents the time interval. Equation (1) distinguishes between the direction of electricity supply and purchase by producer-consumer user, [·] + and[·] - They represent / > The positive and negative parts. The electricity purchased by user i from the higher-level power system, / > Electricity sold by user i to the higher-level power system. For the electricity that user i obtains from the energy hub, / > The amount of electricity supplied by producer-consumer user i to the energy hub. Equation (2) calculates the amount of heat purchased by producer-consumer user i. In this embodiment, heat sharing between producer-consumer users is not considered; producer-consumer users only obtain heat from the energy hub. Or heat purchased from a higher-level heating system / > For the heat load of user i, Δh i,t The demand response to the heat load of user i is given by equations (3) and (4). Equations (3) and (4) limit the demand response capabilities of electrical and heat loads. and / > This represents the maximum value of the electrical load reduction and the thermal load reduction. Equations (5) and (6) restrict the variables to be non-negative.

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052] In the integrated energy community energy trading model constructed in this embodiment, equation (7) represents the goal of the integrated energy community to minimize the total cost (maximize total revenue) of its owned energy hubs and the prosumers and consumers it operates. CO The total cost of an integrated energy community, The cost for each producer and consumer is calculated using equation (8). The price at which electricity is purchased from the higher-level power system, / > The price at which electricity is sold to the higher-level power system, / > The price for purchasing heat energy from the superior heating system, / > Cost of responding to electrical and thermal load demands. The cost of the energy hub is calculated using equation (9). The price at which the energy hub purchases natural gas from the upstream natural gas system, / > The amount of natural gas purchased by the energy hub from the upstream natural gas system is converted into electricity and heat energy through combined heat and power units and heat pumps. and / > The amount of electricity purchased and sold by the energy hub to the upper-level power system. Equation (10) analyzes the energy sharing of producers and consumers from an overall perspective, and the total energy supply of all producers and consumers should be equal to the total energy purchase of all producers and consumers. Equation (11) shows that the integrated energy community operator makes decisions based on the collection of energy sharing information of producers and consumers.

[0053]

[0054]

[0055]

[0056]

[0057] (1)-(6) (11)

[0058] In the producer-consumer user satisfaction function definition model constructed in this embodiment, the producer-consumer user defines their own satisfaction function through equation (12). This function describes the satisfaction level of producer-consumer user i (SATI). i The relationship between the additional profits that producers and consumers gain from participating in the integrated energy community and those they would gain if they did not participate, including additional profits from electricity trading. Extra profits from heat trading / > Equations (13)-(14) calculate the additional profits from trading electricity and heat. and / > The electricity and heat profits of producer-consumer user i when not participating in the integrated energy community can be obtained from their historical data before participation. The electricity profit of user i after participating in the integrated energy community is calculated by equation (15), where in equation (15) / > The cost of sharing electricity per unit, The amount of shared electricity is calculated using equation (16). The heat energy profit of user i after participating in the energy community is calculated by equation (17), where in equation (17) / > The cost of obtaining a unit of heat from an energy hub, / > The heat obtained from the energy hub is calculated using equation (18). Equation (19) indicates that the satisfaction function must satisfy the condition when... The satisfaction rate of prosumer users is 0%. Equation (20) shows that each user hopes to achieve a satisfaction rate of more than 20%, and the maximum satisfaction rate is 100%.

[0059]

[0060]

[0061]

[0062]

[0063]

[0064]

[0065] / >

[0066]

[0067]

[0068] In the integrated energy community overall satisfaction maximization model constructed in this embodiment, equation (21) represents the profit allocated by the integrated energy community with the goal of maximizing the overall satisfaction of producers and consumers. Equation (22) indicates that the total operating cost of the energy hub in the integrated energy community plus its expected profit needs to be higher than a certain value. Equation (23) shows that the integrated energy community operator distributes benefits based on the collection of user satisfaction functions.

[0069]

[0070]

[0071] (12)-(20) (23).

Claims

1. A comprehensive energy community modeling method considering the satisfaction of producers and consumers, characterized in that, It consists of two parts: a profit calculation model for an integrated energy community and a profit distribution model for producers and consumers. The profit calculation model for an integrated energy community is characterized by including an energy sharing model for producers and consumers and an energy trading model for the integrated energy community. The profit distribution model for producers and consumers is characterized by including a satisfaction function definition model for producers and consumers and a model for maximizing the overall satisfaction of the integrated energy community.

2. The integrated energy community modeling method considering user satisfaction as described in claim 1, characterized in that, The aforementioned energy sharing model for producers and consumers adopts the following approach: producers and consumers sell or purchase energy to other users in the energy community based on their own energy supply and demand, thereby achieving energy sharing among producers and consumers; for the portion of energy that cannot be sold or purchased through transactions with other users, producers and consumers need to transact with the integrated energy community operator and the energy equipment owned by the operator or with the upstream energy system.

3. The integrated energy community modeling method considering user satisfaction as described in claim 1, characterized in that, The integrated energy community energy trading model adopts the following approach: The integrated energy community operator collects transaction information between producers and consumers, as well as the transaction demands of producers and consumers and the operator's energy equipment or upstream energy systems. With the goal of maximizing the overall benefits of the integrated energy community (minimizing the overall costs of the integrated energy community), the operator approves the energy sharing volume between producers and consumers, and determines the energy trading volume of producers and consumers and the operator's energy equipment and upstream energy systems.

4. The integrated energy community modeling method considering user satisfaction as described in claim 1, characterized in that, The aforementioned model for defining the user satisfaction function of producers and consumers adopts the relationship between the additional profits that producers and consumers can obtain after participating in the integrated energy community and their level of satisfaction. The additional profit that prosumers can obtain after participating in the integrated energy community refers to the profit that prosumers obtain after participating in the integrated energy community, which is higher than the profit they would obtain if they did not participate; the satisfaction level refers to the degree of satisfaction that prosumers define as being between 0% and 100% with the additional profit obtained; when the satisfaction level of prosumers is below 20%, prosumers are at risk of leaving the integrated energy community.

5. The integrated energy community modeling method considering user satisfaction as described in claim 1, characterized in that, The integrated energy community overall satisfaction maximization model adopts the following approach: after deducting equipment operating costs and expected profits, the integrated energy community operator aims to maximize the overall satisfaction of all its internal producers and consumers, and then distributes the remaining revenue to each producer and consumer.

Images