Energy distribution method and device

By dividing the load data of energy consumers and establishing a two-stage robust optimization model, the problem of inefficient energy allocation caused by new energy uncertainty is solved, and more efficient energy utilization is achieved.

CN115545552BActive Publication Date: 2025-06-06GUANGDONG POWER GRID CO LTD +1
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Patent Information

Application Number
CN202211377534.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-04
Publication Date
2025-06-06
Estimated Expiration
2042-11-04

AI Technical Summary

Technical Problem

The existing energy allocation methods cannot effectively solve the uncertainty of new energy, resulting in the inability to allocate energy according to consumers' energy consumption needs, resulting in low energy utilization efficiency.

Method used

By dividing the annual load data of energy consumers, the load data of new energy and the load data of each consumer are generated, combined with the user's electricity demand constraints, a two-stage robust optimization model is established, and the scheduling scheme is solved and energy allocation is distributed according to individual preferences.

Benefits of technology

It effectively improves energy utilization efficiency, fully considers the energy consumption needs and power generation uncertainties of various energy consumers, and improves the flexibility and practicality of energy distribution.

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Abstract

The present invention discloses an energy allocation method and device, the method comprising: dividing the annual load data of energy producers and consumers, generating the load data of new energy and the load data of each producer and consumer; calculating the individual preference of each producer and consumer according to the load data of new energy and the load data of each producer and consumer, combined with the power demand constraint of the user; establishing a two-stage robust optimization model according to the annual load data of energy producers and consumers, solving the scheduling scheme according to the two-stage robust optimization model, and obtaining the energy allocation result according to the scheduling scheme and the individual preference. The use of the embodiments of the present invention can effectively improve the energy utilization efficiency.
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Description

Technical Field

[0001] The present invention relates to the technical field of energy distribution, and in particular to an energy distribution method and device. Background Art

[0002] The existing energy system does not take into account consumers' energy needs and the uncertainty of new energy sources, resulting in the inability to allocate various types of energy according to consumers' energy needs.

[0003] From the above, it can be concluded that the existing energy allocation method cannot solve the problem of uncertainty, which makes it impossible to allocate various types of energy according to consumers' energy needs, resulting in low energy utilization efficiency. Summary of the invention

[0004] The embodiments of the present invention provide an energy distribution method and device, which effectively improve energy utilization efficiency.

[0005] A first aspect of an embodiment of the present application provides an energy distribution method, comprising:

[0006] Divide the annual load data of energy producers and consumers to generate new energy load data and load data of each producer and consumer;

[0007] Based on the load data of new energy and each producer and consumer, combined with the user's electricity demand constraints, the individual preferences of each producer and consumer are calculated;

[0008] A two-stage robust optimization model is established based on the annual load data of energy producers and consumers. After solving the two-stage robust optimization model to obtain the scheduling plan, the energy allocation result is obtained according to the scheduling plan and individual preferences.

[0009] In a possible implementation of the first aspect, a two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically:

[0010] The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers;

[0011] A two-stage robust optimization model is established based on the grid cost, dispatching cost and controllable distributed generation cost.

[0012] In a possible implementation of the first aspect, the annual load data of energy producers and consumers is divided to generate load data of new energy and load data of each producer and consumer, specifically:

[0013] The annual load data of energy producers and consumers are divided into data in the form of energy types to generate load data of new energy sources; the load data of new energy sources are used as the uncertainty set in robust optimization;

[0014] The annual load data of energy producers and consumers are divided from the perspective of producers and consumers to generate load data of each producer and consumer; wherein the load data of each producer and consumer is used as the energy demand of each producer and consumer.

[0015] In a possible implementation manner of the first aspect, the user power demand constraint is specifically:

[0016]

[0017]

[0018] Among them, P DR (t) is the actual dispatching power of the microgrid to the demand response load in the time period t; D DR is the total electricity demand of the demand response load during the dispatch period; is the minimum power demand of the demand response load in period t; is the maximum electricity demand of the demand response load in period t.

[0019] In a possible implementation of the first aspect, the grid cost is calculated based on the annual load data of the energy producer and consumer, specifically:

[0020] The annual load data of energy producers and consumers include: conventional load power in the grid, photovoltaic output power in the grid, output power of micro gas turbines and day-ahead electricity price;

[0021] The grid cost is calculated based on the conventional load power in the grid, the photovoltaic output power in the grid, the output power of the micro gas turbine and the day-ahead transaction electricity price. Specifically, it is:

[0022] C M (t) = λ(t)[P DR (t)+P L (t)-P G (t)-P PV (t)]Δt;

[0023] Among them, C M (t) represents the grid cost; P L (t) represents the normal load power in the power grid during the period t; P PV (t) represents the photovoltaic output power in the grid during the period t; P G (t) represents the output power of the micro gas turbine in the period t; λ(t) represents the day-ahead transaction electricity price of the distribution network; Δt is the scheduling step, which is 1h.

[0024] In a possible implementation of the first aspect, the dispatch cost is calculated according to the annual load data of the energy producer and consumer, specifically:

[0025] The annual load data of energy prosumers include: the unit dispatch cost of demand response load and the expected power consumption of demand response load;

[0026] The dispatch cost is calculated based on the unit dispatch cost of the demand response load and the expected power consumption of the demand response load, which is:

[0027]

[0028] Among them, C DR (t) represents the scheduling cost; K DR is the unit dispatch cost of demand response load; It represents the expected power consumption of the demand response load during the period t.

[0029] In a possible implementation of the first aspect, the controllable distributed power source cost is calculated based on the annual load data of the energy producer and consumer, specifically:

[0030] The annual load data of energy prosumers include: the output power of micro gas turbines;

[0031] The cost of controllable distributed power supply is calculated based on the output power of the micro gas turbine, which is:

[0032] C G (t) = [aP G (t)+b]Δt;

[0033] Among them, C G (t) represents the cost of controllable distributed power generation; C G (t) represents the power generation cost of the micro gas turbine in period t; a and b are cost coefficients; P G (t) represents the output power of the micro gas turbine during the period t.

[0034] In a possible implementation of the first aspect, a two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost, specifically:

[0035]

[0036] Among them, C G (t) represents the cost of controllable distributed power generation; C DR (t) represents the scheduling cost; C M (t) represents the grid cost.

[0037] A second aspect of an embodiment of the present application provides an energy distribution device, including: a division module, a calculation module and a solution module;

[0038] Among them, the division module is used to divide the annual load data of energy producers and consumers, and generate the load data of new energy and the load data of each producer and consumer;

[0039] The calculation module is used to calculate the individual preferences of each prosumer based on the load data of the new energy and the load data of each prosumer, combined with the user's electricity demand constraints;

[0040] The solution module is used to establish a two-stage robust optimization model based on the annual load data of energy producers and consumers. After solving the two-stage robust optimization model to obtain the scheduling plan, the energy allocation result is obtained according to the scheduling plan and individual preferences.

[0041] In a possible implementation of the second aspect, a two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically:

[0042] The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers;

[0043] A two-stage robust optimization model is established based on the grid cost, dispatching cost and controllable distributed generation cost.

[0044] Compared with the prior art, an embodiment of the present invention provides an energy allocation method and device, the method comprising: dividing the annual load data of energy producers and consumers to generate load data of new energy and load data of each producer and consumer; calculating the individual preference of each producer and consumer based on the load data of new energy and the load data of each producer and consumer, combined with the user's electricity demand constraints; establishing a two-stage robust optimization model based on the annual load data of energy producers and consumers, solving the two-stage robust optimization model to obtain a scheduling plan, and then obtaining an energy allocation result based on the scheduling plan and individual preferences.

[0045] Its beneficial effect is that: the embodiment of the present invention divides the annual load data of energy producers and consumers, generates the load data of new energy and the load data of each producer and consumer, calculates the individual preferences of each producer and consumer based on the load data of new energy and the load data of each producer and consumer, solves the scheduling plan according to the two-stage robust optimization model, and obtains the energy allocation result according to the scheduling plan and the individual preferences. In the process of calculating the energy allocation result, the embodiment of the present invention considers the load data of new energy used as the uncertain set in the robust optimization and the load data of each producer and consumer used as the energy requirements of each producer and consumer, and fully considers the energy demand and power generation uncertainty of each energy producer and consumer, so the calculated energy allocation result can effectively improve the energy utilization efficiency.

[0046] Furthermore, the embodiments of the present invention are comprehensive, flexible, and practical, and can be easily promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a flowchart of an energy distribution method provided by an embodiment of the present invention;

[0048] Figure 2 It is a structural schematic diagram of an energy distribution device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Reference Figure 1 , is a flow chart of an energy allocation method provided by an embodiment of the present invention, including S101-S103:

[0051] S101: Divide the annual load data of energy producers and consumers to generate load data of new energy and load data of each producer and consumer.

[0052] In this embodiment, the annual load data of energy producers and consumers is divided to generate the load data of new energy and the load data of each producer and consumer, specifically:

[0053] The annual load data of the energy producer and consumer is divided into data in the form of energy types to generate the load data of the new energy; wherein the load data of the new energy is used as an uncertainty set in robust optimization;

[0054] The annual load data of the energy prosumer is divided from the perspective of the prosumer to generate the load data of each prosumer; wherein the load data of each prosumer is used as the energy demand of each prosumer.

[0055] S102: Calculate the individual preferences of each prosumer based on the load data of new energy sources and the load data of each prosumer and in combination with the power demand constraints of users.

[0056] Among them, the energy demand of each producer and consumer is divided from the perspective of the producer and consumer based on the load data of the energy producers and consumers participating in the stratification and grading, and the load data of each producer and consumer is used as the energy requirement of each producer and consumer; the individual preferences of each producer and consumer are taken into account according to the constraints on user electricity demand.

[0057] In this embodiment, the user power demand constraint is specifically:

[0058]

[0059]

[0060] Among them, P DR (t) is the actual dispatching power of the microgrid to the demand response load in the time period t; D DR is the total electricity demand of the demand response load during the dispatch period; is the minimum power demand of the demand response load in period t; is the maximum electricity demand of the demand response load in period t.

[0061] S103: A two-stage robust optimization model is established based on the annual load data of energy producers and consumers. After solving the two-stage robust optimization model to obtain a scheduling plan, the energy allocation result is obtained based on the scheduling plan and individual preferences.

[0062] In this embodiment, the two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically:

[0063] The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers;

[0064] The two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost.

[0065] In a specific embodiment, the grid cost is calculated based on the annual load data of energy producers and consumers, specifically:

[0066] The annual load data of the energy producer and consumer include: conventional load power in the power grid, photovoltaic output power in the power grid, output power of micro gas turbines and day-ahead transaction electricity price;

[0067] The grid cost is calculated based on the conventional load power in the grid, the photovoltaic output power in the grid, the output power of the micro gas turbine and the day-ahead transaction electricity price, specifically:

[0068] C M (t) = λ(t)[P DR (t)+P L (t)-P G (t)-P PV (t)]Δt;

[0069] Among them, C M (t) represents the power grid cost; P L (t) represents the normal load power in the power grid during the period t; P PV(t) represents the photovoltaic output power in the power grid during the period t; P G (t) represents the output power of the micro gas turbine in the period t; λ(t) represents the day-ahead transaction electricity price of the distribution network; Δt is the scheduling step, which is 1h.

[0070] In a specific embodiment, the scheduling cost is calculated based on the annual load data of energy producers and consumers, specifically:

[0071] The annual load data of the energy prosumer includes: the unit dispatch cost of the demand response load and the expected power consumption of the demand response load;

[0072] The dispatch cost is calculated according to the unit dispatch cost of the demand response load and the expected power consumption of the demand response load, specifically:

[0073]

[0074] Among them, C DR (t) represents the scheduling cost; K DR is the unit dispatch cost of the demand response load; It represents the expected power consumption of the demand response load during the period t.

[0075] In a specific embodiment, the cost of controllable distributed power source is calculated based on the annual load data of energy producers and consumers, specifically:

[0076] The annual load data of the energy prosumer includes: the output power of the micro gas turbine;

[0077] The controllable distributed power source cost is calculated according to the output power of the micro gas turbine, specifically:

[0078] C G (t) = [aP G (t)+b]Δt;

[0079] Among them, C G (t) represents the cost of the controllable distributed power source; C G (t) represents the power generation cost of the micro gas turbine in period t; a and b are cost coefficients; P G (t) represents the output power of the micro gas turbine during the period t.

[0080] In a specific embodiment, the two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost, specifically:

[0081]

[0082] Among them, C G (t) represents the cost of the controllable distributed power source; C DR (t) represents the scheduling cost; C M (t) represents the grid cost.

[0083] Furthermore, since the load data of renewable energy is used as the uncertainty set in robust optimization, the uncertainty set is:

[0084]

[0085] Among them, u PV (t) is the uncertainty of each new energy output introduced after considering the uncertainty; u L (t) is the load power uncertainty variable introduced after considering the uncertainty; The maximum fluctuation deviation allowed for photovoltaic output; The maximum fluctuation deviation allowed for load power; and All are positive numbers.

[0086] The load data of new energy sources is used as the uncertainty set in robust optimization. According to the uncertainty set, the most economically optimal scheduling plan is obtained when the uncertain variables in the uncertainty set change in the worst scenario. Then the inner and outer layers are optimized, and the iterative decomposition is performed according to the corresponding optimization variables. Then, according to the strong duality theory, the decomposed sub-problems are transformed and merged with the outer layer max problem. The optimal scheduling plan can be obtained by solving the merged constraints.

[0087] The purpose of this model is to find the most economically optimal scheduling solution when the uncertain variable u changes towards the worst scenario in the uncertainty set U, which has the following form:

[0088]

[0089] Among them, the minimization of the outer layer is the first stage problem, and the optimization variable is x; the maximum minimization of the inner layer is the second stage problem, and the optimization variables are u and y. The minimization problem here means minimizing the running cost; the expressions of x and y are as follows:

[0090]

[0091] Ω(x,u) represents the feasible domain of optimizing variable y given a set of (x,u). The specific expression is as follows:

[0092]

[0093] Where γ, λ, ν and π represent the dual variables corresponding to the constraints in the minimization problem of the second stage.

[0094] Using C&CG to decompose the purpose form, the main problem form is:

[0095]

[0096] Among them, k is the current number of iterations; y l is the solution of the subproblem after the lth iteration; u * l is the value of the uncertain variable u in the worst scenario obtained after the lth iteration.

[0097] The decomposed sub-problems are in the form of:

[0098] max u∈U min y∈Ω(x,u) c T y;

[0099] According to the strong duality theory, it is converted into the max form and merged with the outer max problem to obtain the following dual problem:

[0100]

[0101] And by solving the above constraints, the optimal scheduling solution is obtained.

[0102] Furthermore, the optimal dispatching scheme includes: energy cost, flexible resource reserve cost and energy demand cost. The energy cost, flexible resource reserve cost and energy demand cost are allocated to the participants of the corresponding hierarchical dispatching plan (i.e., combined with individual preferences), and the final hierarchical dispatching result (i.e., energy allocation result) can be obtained. According to the above model and its dual variables, the price of flexible resources, the price of electricity and the marginal price of user electricity welfare can be calculated; according to the optimal dispatching scheme, combined with the individual preferences of each producer and consumer, the final hierarchical dispatching result is obtained.

[0103] The specific energy cost is: C G (t)+C DR (t)+C M (t);

[0104] The cost of flexible resource reserve is: λ(t)[P L (t)-P PV (t)]Δt;

[0105] The energy demand cost is:

[0106] For further explanation of the energy distribution device, please refer to Figure 2 , Figure 2It is a structural schematic diagram of an energy distribution device provided by an embodiment of the present invention, comprising: a division module, a calculation module and a solution module;

[0107] The division module is used to divide the annual load data of energy producers and consumers, and generate the load data of new energy and the load data of each producer and consumer;

[0108] The calculation module is used to calculate the individual preferences of each prosumer based on the load data of the new energy source and the load data of each prosumer, combined with the user's electricity demand constraints;

[0109] The solution module is used to establish a two-stage robust optimization model based on the annual load data of energy producers and consumers, and after solving the two-stage robust optimization model to obtain a scheduling plan, obtain an energy allocation result based on the scheduling plan and the individual preferences.

[0110] In this embodiment, the two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically:

[0111] The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers;

[0112] The two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost.

[0113] In this embodiment, the annual load data of energy producers and consumers is divided to generate the load data of new energy and the load data of each producer and consumer, specifically:

[0114] The annual load data of the energy producer and consumer is divided into data in the form of energy types to generate the load data of the new energy; wherein the load data of the new energy is used as an uncertainty set in robust optimization;

[0115] The annual load data of the energy prosumer is divided from the perspective of the prosumer to generate the load data of each prosumer; wherein the load data of each prosumer is used as the energy demand of each prosumer.

[0116] In this embodiment, the user power demand constraint is specifically:

[0117]

[0118]

[0119] Among them, P DR (t) is the actual dispatching power of the microgrid to the demand response load in the time period t; D DRis the total electricity demand of the demand response load during the dispatch period; is the minimum power demand of the demand response load in period t; is the maximum electricity demand of the demand response load in period t.

[0120] In this embodiment, the grid cost is calculated based on the annual load data of energy producers and consumers, specifically:

[0121] The annual load data of the energy producer and consumer include: conventional load power in the power grid, photovoltaic output power in the power grid, output power of micro gas turbines and day-ahead transaction electricity price;

[0122] The grid cost is calculated based on the conventional load power in the grid, the photovoltaic output power in the grid, the output power of the micro gas turbine and the day-ahead transaction electricity price, specifically:

[0123] C M (t) = λ(t)[P DR (t)+P L (t)-P G (t)-P PV (t)]Δt;

[0124] Among them, C M (t) represents the power grid cost; P L (t) represents the normal load power in the power grid during the period t; P PV (t) represents the photovoltaic output power in the power grid during the period t; P G (t) represents the output power of the micro gas turbine in the period t; λ(t) represents the day-ahead transaction electricity price of the distribution network; Δt is the scheduling step, which is 1h.

[0125] In this embodiment, the dispatching cost is calculated based on the annual load data of energy producers and consumers, specifically:

[0126] The annual load data of the energy prosumer includes: the unit dispatch cost of the demand response load and the expected power consumption of the demand response load;

[0127] The dispatch cost is calculated according to the unit dispatch cost of the demand response load and the expected power consumption of the demand response load, specifically:

[0128]

[0129] Among them, C DR (t) represents the scheduling cost; K DR is the unit dispatch cost of the demand response load; It represents the expected power consumption of the demand response load during the period t.

[0130] In this embodiment, the controllable distributed power cost is calculated based on the annual load data of energy producers and consumers, specifically:

[0131] The annual load data of the energy prosumer includes: the output power of the micro gas turbine;

[0132] The controllable distributed power source cost is calculated according to the output power of the micro gas turbine, specifically:

[0133] C G (t) = [aP G (t)+b]Δt;

[0134] Among them, C G (t) represents the cost of the controllable distributed power source; C G (t) represents the power generation cost of the micro gas turbine in period t; a and b are cost coefficients; P G (t) represents the output power of the micro gas turbine during the period t.

[0135] In this embodiment, the two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost, specifically:

[0136]

[0137] Among them, C G (t) represents the cost of the controllable distributed power source; C DR (t) represents the scheduling cost; C M (t) represents the grid cost.

[0138] The embodiment of the present invention divides the annual load data of energy producers and consumers through a division module to generate load data of new energy and load data of each producer and consumer; the calculation module calculates the individual preference of each producer and consumer based on the load data of new energy and the load data of each producer and consumer, combined with the user's electricity demand constraints; the solution module establishes a two-stage robust optimization model based on the annual load data of energy producers and consumers, and after solving the two-stage robust optimization model to obtain a scheduling plan, the energy allocation result is obtained according to the scheduling plan and individual preferences.

[0139] The embodiment of the present invention divides the annual load data of energy producers and consumers, generates the load data of new energy and the load data of each producer and consumer, calculates the individual preferences of each producer and consumer based on the load data of new energy and the load data of each producer and consumer, solves the scheduling plan based on the two-stage robust optimization model, and obtains the energy allocation result based on the scheduling plan and the individual preferences. In the process of calculating the energy allocation result, the embodiment of the present invention considers the load data of new energy used as the uncertain set in the robust optimization and the load data of each producer and consumer used as the energy requirements of each producer and consumer, and fully considers the energy demand and power generation uncertainty of each energy producer and consumer, so the calculated energy allocation result can effectively improve the energy utilization efficiency.

[0140] Furthermore, the embodiments of the present invention are comprehensive, flexible, and practical, and can be easily promoted.

[0141] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for allocating energy, It is characterized in that include: Divide the annual load data of energy producers and consumers to generate new energy load data and load data of each producer and consumer; According to the load data of the new energy and the load data of each prosumer, combined with the user's electricity demand constraints, the individual preferences of each prosumer are calculated; A two-stage robust optimization model is established according to the annual load data of energy producers and consumers, a scheduling scheme is obtained by solving the two-stage robust optimization model, and then an energy allocation result is obtained according to the scheduling scheme and the individual preferences; The two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically: The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers; Establishing the two-stage robust optimization model according to the grid cost, the dispatching cost and the controllable distributed power source cost; The data division of the annual load data of energy producers and consumers to generate the load data of new energy and the load data of each producer and consumer is specifically as follows: The annual load data of the energy producer and consumer is divided into data in the form of energy types to generate the load data of the new energy; wherein the load data of the new energy is used as an uncertainty set in robust optimization; The annual load data of the energy prosumer is divided from the perspective of the prosumer to generate the load data of each prosumer; wherein the load data of each prosumer is used as the energy consumption requirement of each prosumer; The user power demand constraints are specifically: Among them, P DR (t) is the actual dispatching power of the microgrid to the demand response load in the time period t; D DR is the total electricity demand of the demand response load during the dispatch period; is the minimum power demand of the demand response load in period t; is the maximum power demand of the demand response load in period t; The two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost, specifically: Among them, C G (t) represents the cost of the controllable distributed power source; C DR (t) represents the scheduling cost; C M (t) represents the power grid cost; The load data of renewable energy sources is used as the uncertainty set in robust optimization. The uncertainty set is: Among them, u PV (t) is the uncertainty of each new energy output introduced after considering the uncertainty; u L (t) is the load power uncertainty variable introduced after considering the uncertainty; The maximum fluctuation deviation allowed for photovoltaic output; The maximum fluctuation deviation allowed for load power; and All are positive numbers.

2. An energy distribution method according to claim 1, It is characterized in that The grid cost is calculated based on the annual load data of energy producers and consumers, specifically: The annual load data of the energy producer and consumer include: conventional load power in the power grid, photovoltaic output power in the power grid, output power of micro gas turbines and day-ahead transaction electricity price; The grid cost is calculated based on the conventional load power in the grid, the photovoltaic output power in the grid, the output power of the micro gas turbine and the day-ahead transaction electricity price, specifically: C M (t)=λ(t)[P DR (t)+P L (t)-P G (t)-P PV (t)]Δt; Among them, C M (t) represents the power grid cost; P L (t) represents the normal load power in the power grid during the period t; P PV (t) represents the photovoltaic output power in the power grid during the period t; P G (t) represents the output power of the micro gas turbine in the period t; λ(t) represents the day-ahead transaction electricity price of the distribution network; Δt is the scheduling step, which is 1h.

3. An energy distribution method according to claim 2, It is characterized in that The dispatching cost is calculated based on the annual load data of energy producers and consumers, specifically: The annual load data of the energy prosumer includes: the unit dispatch cost of the demand response load and the expected power consumption of the demand response load; The dispatch cost is calculated according to the unit dispatch cost of the demand response load and the expected power consumption of the demand response load, specifically: Among them, C DR (t) represents the scheduling cost; K DR is the unit dispatch cost of the demand response load; It represents the expected power consumption of the demand response load during the period t.

4. An energy distribution method according to claim 3, It is characterized in that The controllable distributed power cost is calculated based on the annual load data of energy producers and consumers, specifically: The annual load data of the energy prosumer includes: the output power of the micro gas turbine; The controllable distributed power source cost is calculated according to the output power of the micro gas turbine, specifically: C G (t)=[aP G (t)+b]Δt; Among them, C G (t) represents the cost of the controllable distributed power source; C G (t) represents the power generation cost of the micro gas turbine in period t; a and b are cost coefficients; P G (t) represents the output power of the micro gas turbine during the period t.

5. An energy distribution device, It is characterized in that include: Division module, calculation module and solution module; The division module is used to divide the annual load data of energy producers and consumers, and generate the load data of new energy and the load data of each producer and consumer; The calculation module is used to calculate the individual preferences of each prosumer based on the load data of the new energy source and the load data of each prosumer, combined with the user's electricity demand constraints; The solution module is used to establish a two-stage robust optimization model according to the annual load data of energy producers and consumers, and after solving the two-stage robust optimization model to obtain a scheduling plan, obtain an energy allocation result according to the scheduling plan and the individual preference; The two-stage robust optimization model is established based on the annual load data of energy producers and consumers, specifically: The grid cost, dispatching cost and controllable distributed power source cost are calculated based on the annual load data of energy producers and consumers; Establishing the two-stage robust optimization model according to the grid cost, the dispatching cost and the controllable distributed power source cost; The data division of the annual load data of energy producers and consumers to generate the load data of new energy and the load data of each producer and consumer is specifically as follows: The annual load data of the energy producer and consumer is divided into data in the form of energy types to generate the load data of the new energy; wherein the load data of the new energy is used as an uncertainty set in robust optimization; The annual load data of the energy prosumer is divided from the perspective of the prosumer to generate the load data of each prosumer; wherein the load data of each prosumer is used as the energy consumption requirement of each prosumer; The user power demand constraints are specifically: Among them, P DR (t) is the actual dispatching power of the microgrid to the demand response load in the time period t; D DR is the total electricity demand of the demand response load during the dispatch period; is the minimum power demand of the demand response load in period t; is the maximum power demand of the demand response load in period t; The two-stage robust optimization model is established according to the grid cost, the dispatching cost and the controllable distributed power source cost, specifically: Among them, C G (t) represents the cost of the controllable distributed power source; C DR (t) represents the scheduling cost; C M (t) represents the power grid cost; The load data of renewable energy sources is used as the uncertainty set in robust optimization. The uncertainty set is: Among them, u PV (t) is the uncertainty of each new energy output introduced after considering the uncertainty; u L (t) is the load power uncertainty variable introduced after considering the uncertainty; The maximum fluctuation deviation allowed for photovoltaic output; The maximum fluctuation deviation allowed for load power; and All are positive numbers.

Citation Information

Patent Citations

  • Microgrid capacity allocation optimization method considering risk losses

    CN110474367A

  • Comprehensive energy system robust planning method and system

    CN111738498A