Low-carbon demand response method for distributed distribution networks considering intraday flexible loads

Through the low-carbon demand response method of distributed distribution network, the power load plan is optimized by using the alternating direction multiplier method, the problem of centralized solution is solved, the rapid response of flexible loads and low-carbon optimization are achieved, and greenhouse gas emissions are reduced.

CN119209567BActive Publication Date: 2025-08-19HEFEI UNIV OF TECH
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Patent Information

Application Number
CN202411427938.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-14
Publication Date
2025-08-19
Estimated Expiration
2044-10-14

AI Technical Summary

Technical Problem

When the prior art deals with the intermittent and uncertainty of renewable energy power generation, the centralized solution process is inefficient and it is difficult to accurately obtain and maintain flexible load parameters, resulting in a decrease in the calculation efficiency of the low-carbon demand response model.

Method used

The low-carbon demand response method of distributed distribution network is adopted, and the total carbon emissions and demand response compensation model is established, and distributed solutions are performed using the alternating direction multiplier method to optimize the power load plan, and intensify the intraday flexible load adjustment of electricity consumption behavior.

Benefits of technology

Through fast-responsive flexible load adjustment, the use of fossil fuels is reduced, greenhouse gas emissions are reduced, computing efficiency is improved, and the adaptability optimization of photovoltaic power generation is achieved.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a low-carbon demand response method for a distributed distribution network that considers intraday flexible loads. The method comprises the following steps: 1. establishing an uncertainty model for the total carbon emissions in the power system; 2. establishing a demand-side response compensation model; 3. establishing an overall model consisting of the uncertainty model for the total carbon emissions in the power system and a demand response compensation model with intraday flexible loads; and 4. using an alternating direction multiplier method to perform a distributed solution on the overall model to obtain an intraday demand response result. The present invention can incentivize loads with intraday flexibility to change their electricity consumption behavior through compensation measures, implement a distributed low-carbon demand response mechanism to optimize power load planning, and achieve peak shaving and valley filling, thereby significantly reducing the total carbon emissions of the power system.
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Description

Technical Field

[0001] The present invention belongs to the field of distributed energy low-carbon demand response, and specifically provides a distributed distribution network low-carbon demand response method considering intraday flexible loads. Background Art

[0002] In traditional power systems, electricity supply is primarily provided by fossil fuel power plants, which results in significant carbon emissions and environmental pollution. The development of renewable energy, especially the accelerated development of distributed generation in distribution networks, has brought new challenges to the secure and economical operation of power systems. Although renewable energy generation does not produce carbon emissions, its output is intermittent and uncertain, depending on fluctuating meteorological conditions such as wind speed and solar radiation intensity. At the same time, there is a spatial and temporal mismatch between renewable energy generation and actual electricity demand. Therefore, demand response has become an important strategy for shifting electricity demand and promoting the use of low-carbon renewable energy generation.

[0003] In recent years, research on demand response has deepened. Regarding low-carbon demand response models, Qian Liang et al. proposed a low-carbon optimal dispatch method that considers parameter-adaptive demand response incentives; Zhou Bowen et al. proposed a new multi-objective optimization model for integrated energy systems that incorporates carbon emissions trading mechanisms and refined load demand response strategies; Duan Jiandong et al. categorized multi-energy loads into vertical and horizontal demand response, constructing a low-carbon economic optimization model for integrated energy systems that integrates an electricity and natural gas refining model with demand response; and Cui Yang et al. constructed a generalized integrated demand response model based on time-of-use, interruptible, and alternative loads to achieve low-carbon economic dispatch for microgrids. All of these low-carbon demand response models have, to a certain extent, reduced power system operating costs and CO2 emissions.

[0004] Although the low-carbon demand response model can be solved by collecting information from all flexible loads, the centralized solution process faces several challenges: in practice, the demand response mechanism is naturally distributed. After the operator announces the demand response invitation to all potential participants, only a small number of flexible loads will participate in the response and send back the changed load plan as a response. The accurate parameters of all flexible loads on the demand side are difficult to obtain and maintain; the centralized demand response model cannot be solved by partial observability on the demand side. The number of flexible loads is huge, so when the size of variables and constraints increases, the computational efficiency of the centralized model will decrease. Summary of the Invention

[0005] The present invention aims to address the deficiencies of the above-mentioned prior art and proposes a low-carbon demand response method for a distributed distribution network that takes into account intraday flexible loads, in order to encourage loads with intraday flexibility to change their electricity consumption behavior through compensation measures, implement a distributed low-carbon demand response mechanism to optimize power load planning, and achieve peak shaving and valley filling, thereby significantly reducing the total carbon emissions of the power system and being more conducive to obtaining the results of intraday flexible load demand-side response.

[0006] In order to achieve the above-mentioned object, the present invention adopts the following technical solutions:

[0007] The low-carbon demand response method of a distributed distribution network considering intraday flexible loads of the present invention is characterized in that it includes the following steps:

[0008] Step 1: Take the total carbon emissions of the power system at time t As the goal, the uncertainty model of total carbon emissions is established using formulas (1) to (3):

[0009] (1)

[0010] (2)

[0011] (3)

[0012] In formula (1) to formula (3), is the number of generators, is the active power generated by the i-th generator at time t, The output power of the i-th generator is The linear carbon emission function, is the carbon emission coefficient of the i-th generator, is the type of distributed power supply, is the type set of distributed power sources, for Carbon emission coefficient of distributed power generation type, for Type of active power generated by distributed generation, is the average carbon emission coefficient of the transmission grid power;

[0013] Step 2: Take the demand response compensation value of the intraday flexible load at node a at time t as As the goal, the objective function of the demand response compensation model is established using formula (4):

[0014] (4)

[0015] In formula (4), - Represents 5 interval endpoint values, and there are < < < < , represents the active power of the intraday flexible load at node a at time t, represents the benchmark active power of the intraday flexible load at node a at time t, 、 、 、 is the compensation coefficient corresponding to 4 different intervals;

[0016] A series of equivalent linear constraints of the demand response compensation model are constructed using equations (5) to (8):

[0017] (5)

[0018] (6)

[0019] (7)

[0020] (8)

[0021] Step 3: Construct a final model consisting of an uncertainty model of the total carbon emissions of the power system and a demand response compensation model with intraday flexible loads;

[0022] Step 3.1: According to formula (9), establish the demand response compensation model of total carbon emissions in the power system and flexible load within the day. s The objective function J after time:

[0023] (9)

[0024] In formula (9), T represents the upper limit of the intraday flexible load adjustment time, and ID represents the set with intraday flexible loads;

[0025] Step 3.2: Establish the overall constraints of the total carbon emissions of the power system and the demand response compensation model with intraday flexible load;

[0026] Step 4: Use the alternating direction multiplier method to perform distributed solution on the total carbon emissions of the power system and the demand response compensation model with intraday flexible load to obtain the intraday demand response results.

[0027] The low-carbon demand response method for a distributed distribution network considering intraday flexible loads according to the present invention is also characterized in that step 3.2 includes the following steps:

[0028] Step 3.2.1. Determine the output power constraints of the generator and distributed generation using equations (10) and (11):

[0029] (10)

[0030] (11)

[0031] In formula (10)-formula (11), 、 represents the lower and upper limits of the active power generated by the i-th generating equipment at time t, 、 represents the lower and upper limits of the reactive power generated by the i-th generating equipment at time t, represents the reactive power generated by the i-th generating equipment at time t;

[0032] Step 3.2.2: Determine the power flow constraints of the radial distribution network using equations (12) to (14):

[0033] (12)

[0034] (13)

[0035] (14)

[0036] In formula (12)-formula (14), is the active power flowing from the branch connected to node a and node b into node b at time t, is the set of power generation equipment connected to node b, m is any node connected to node b except node a, is the active power flowing out of node b from the branch connected to node b and node m at time t, is the set of loads on node b, is the active power of the load on node b at time t, is the reactive power flowing from the branch connected to node a and node b into node b at time t, is the reactive power flowing out of node b from the branch connected to node b and node m at time t, is the reactive power of the load on node b at time t, 、 They represent the square of the voltage at node a and node b at time t, 、 Represent the resistance and reactance of the branch connected to node a and node b respectively;

[0037] Step 3.2.3: Use Equation (15) to determine the branch capacity constraint:

[0038] (15)

[0039] In formula (15), Indicates the maximum capacity allowed on the branch connected to nodes a and b;

[0040] Step 3.2.4: Use equations (16) and (17) to construct node voltage constraints:

[0041] (16)

[0042] (17)

[0043] In formula (16)-formula (17), 、 They represent the lower and upper limits of the voltage on node a, represents the voltage on node a at time t, It represents the voltage of the node numbered bus-0 on the bus connected to the transmission network at time t. Indicates the reference voltage;

[0044] Step 3.2.5: Use equations (18) to (21) to establish a load constraint with intraday flexibility:

[0045] (18)

[0046] (19)

[0047] (20)

[0048] (twenty one)

[0049] In formula (18) to formula (21), is the response delay time of the load on node a, 、 They represent the lower and upper limits of the active power of the intraday flexible load at node a at time t, Represents the time interval between adjacent moments, 、 They are the intraday flexible loads on node a running to The lower and upper bounds of energy consumption at all times, represents the power factor angle of the ath node, Indicates the adjustment time when the flexible load starts within the day.

[0050] Furthermore, the step 4 includes the following steps:

[0051] Step 4.1: Define the decision variables on the grid side at time t and the decision variables on the load side at time t ,in, They represent the active power and reactive power of the intraday flexible load at node a on the grid side at time t, They represent the active power and reactive power of the intraday flexible load at node a on the load side at time t respectively;

[0052] Step 4.2: Use equations (22) to (26) to construct the transformed constraint conditions:

[0053] (twenty two)

[0054] (twenty three)

[0055] (twenty four)

[0056] (25)

[0057] (26)

[0058] Step 4.3, define the current number of iterations as , and initialize =0, and initialize the The active power of the flexible load on the load side node a at time t under the iteration and reactive power , initialize the The active power of the flexible load on the grid side node a at time t under the iteration and reactive power , initialize the The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier ;

[0059] Step 4.4: Use formula (27) to construct The objective function under the iteration , and under the constraints after transformation, The objective function under the iteration Solve and get The active power of the load on node a on the grid side at time t in the iteration and reactive power :

[0060] (27)

[0061] In formula (27), is the weight factor;

[0062] Step 4.5, , and After substituting into formula (27), Solve and get The active power of the flexible load on the load side node a at time t under the iteration and reactive power ;

[0063] Step 4.6: According to formula (28)-formula (29), Update to get The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier ;

[0064] (28)

[0065] (29)

[0066] Step 4.7, if and If the maximum value between the two is less than the set convergence criterion, it means that the intraday demand response result is and Otherwise, Assign to Then, return to step 4.4 and execute the sequence.

[0067] The electronic device of the present invention includes a memory and a processor, and is characterized in that the memory is used to store a program that supports the processor to execute the distributed distribution network low-carbon demand response method, and the processor is configured to execute the program stored in the memory.

[0068] The present invention provides a computer-readable storage medium, and the computer-readable storage medium stores a computer program, which is characterized in that when the computer program is run by a processor, the steps of the distributed distribution network low-carbon demand response method are executed.

[0069] Compared with the prior art, the present invention has the following beneficial effects:

[0070] 1. Because flexible loads with intraday response can adjust their power demand with shorter response delays, this invention introduces intraday demand response to address deviations between actual photovoltaic power generation and the previous day's forecasted photovoltaic power generation, further improving the adaptability of photovoltaic power generation. By optimizing the power generation mix in real time, the intraday adjustment strategy helps reduce fossil fuel use and lower greenhouse gas emissions.

[0071] 2. This paper proposes a distributed demand response mechanism based on the alternating direction multiplier method, which addresses the drawbacks of centralized solutions, such as low solution efficiency and a complex solution process. Distributed algorithms are more suitable for demand response than centralized post-optimization scheduling methods, simplifying calculations. Users and operators iteratively exchange their plans to obtain the optimal demand plan. A hot start intraday adjustment strategy uses the day-ahead electricity consumption plan to accelerate convergence and achieve efficient rescheduling when PV power generation fluctuates. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0073] In the low-carbon demand response model of the present invention, there are two optimization objectives: carbon emissions in the power system and compensation for loads with intraday flexibility that participate in demand response. The rapid response capability of loads with intraday flexibility also means that their compensation rate is higher than that of loads with day-ahead flexibility. In this embodiment, a low-carbon demand response method for distributed distribution networks considering intraday flexible loads is proposed. Figure 1 As shown, the following steps are included:

[0074] Step 1: The total carbon emissions at time t are divided into two parts: the carbon emissions generated by local generators and the carbon emissions generated by the transmission network. Considering the inevitable power exchange between the distribution network and the transmission network, the transmission network is regarded as a single power source, and the total carbon emissions of the power system at time t are calculated as As the goal, the uncertainty model of total carbon emissions is established using formulas (1) to (3):

[0075] (1)

[0076] (2)

[0077] (3)

[0078] In formula (1) to formula (3), is the number of generators, is the active power generated by the i-th generator at time t, The output power of the i-th generator is The linear carbon emission function, is the carbon emission coefficient of the i-th generator, is the type of distributed power supply, is the type set of distributed power sources, for Carbon emission coefficient of distributed power generation type, for Type of active power generated by distributed generation, is the average carbon emission coefficient of the transmission grid power, which is the weighted average of different types of power sources.

[0079] Step 2: The power demand with intraday flexible load is adjustable, and the compensation value of demand response depends on the actual load. Its baseline power load In the present invention, a piecewise function compensation method is adopted, and the compensation coefficient depends on The value of the demand response compensation value of the intraday flexible load at node a at time t is As the goal, the objective function of the demand response compensation model is established using formula (4):

[0080] (4)

[0081] In formula (4), - Represents 5 interval endpoint values, and there are < < < < , represents the active power of the intraday flexible load at node a at time t, represents the benchmark active power of the intraday flexible load at node a at time t, 、 、 、 are the compensation coefficients corresponding to the four different intervals.

[0082] Because the compensation coefficient will change with the actual load Its baseline power load The demand response compensation value increases with the increase of the deviation between Relative to actual load is a convex function, which enables us to rewrite the piecewise function into a series of equivalent linear constraints and use Equations (5) to (8) to construct a series of equivalent linear constraints for the demand response compensation model:

[0083] (5)

[0084] (6)

[0085] (7)

[0086] (8)

[0087] Step 3: Construct a final model consisting of an uncertainty model of the total carbon emissions of the power system and a demand response compensation model with intraday flexible loads.

[0088] Step 3.1: According to formula (9), establish the demand response compensation model of total carbon emissions in the power system and flexible load within the day. s The objective function J after time:

[0089] (9)

[0090] In formula (9), T represents the upper limit of the intra-day flexible load adjustment time, and ID represents the set of intra-day flexible loads.

[0091] Step 3.2: Establish the overall constraints for the total carbon emissions of the power system and the demand response compensation model with intraday flexible loads, including:

[0092] Step 3.2.1. Determine the output power constraints of the generator and distributed generation using equations (10) and (11):

[0093] (10)

[0094] (11)

[0095] In formula (10)-formula (11), 、 represents the lower and upper limits of the active power generated by the i-th generating equipment at time t, 、 represents the lower and upper limits of the reactive power generated by the i-th generating equipment at time t, represents the reactive power generated by the i-th generating equipment at time t;

[0096] Step 3.2.2: Use the linear branch power flow model to describe the power flow constraints in the radial distribution network, and use equations (12) to (14) to determine the power flow constraints of the radial distribution network:

[0097] (12)

[0098] (13)

[0099] (14)

[0100] In formula (12)-formula (14), is the active power flowing from the branch connected to node a and node b into node b at time t, is the set of power generation equipment connected to node b, m is any node connected to node b except node a, is the active power flowing out of node b from the branch connected to node b and node m at time t, is the set of loads on node b, is the active power of the load on node b at time t, is the reactive power flowing from the branch connected to node a and node b into node b at time t, is the reactive power flowing out of node b from the branch connected to node b and node m at time t, is the reactive power of the load on node b at time t, 、 They represent the square of the voltage at node a and node b at time t, 、 They represent the resistance and reactance of the branches connected to nodes a and b respectively.

[0101] Step 3.2.3: Use Equation (15) to determine the branch capacity constraint:

[0102] (15)

[0103] Equation (15) is a quadratic cone constraint, which is used to limit the power flow to below the branch capacity. Indicates the maximum capacity allowed on the branch connected to nodes a and b;

[0104] Step 3.2.4: Use equations (16) and (17) to constrain voltage:

[0105] (16)

[0106] (17)

[0107] In formula (16)-formula (17), 、 They represent the lower and upper limits of the voltage on node a, represents the voltage on node a at time t, It represents the voltage of the node numbered bus-0 on the bus connected to the transmission network at time t. Indicates the reference voltage.

[0108] Step 3.2.5: The adjustment of the power load with intraday flexibility in demand response is limited by internal physical constraints. This method considers the upper and lower bounds of the power and energy consumed by the adjustable load through the virtual battery model, and uses equations (18) to (21) to establish the load constraints with intraday flexibility:

[0109] (18)

[0110] (19)

[0111] (20)

[0112] (twenty one)

[0113] In formula (18)-formula (21), is the response delay time of the load on node a, 、 They represent the lower and upper limits of the active power of the intraday flexible load at node a at time t, Represents the time interval between adjacent moments, 、 They are the intraday flexible loads on node a running to The lower and upper bounds of energy consumption at all times, represents the power factor angle of the ath node, Indicates the adjustment time when the flexible load starts within the day.

[0114] Step 4: Since the alternating direction multiplier method is widely used to solve optimization problems under constraints and has achieved satisfactory results, the present invention uses the alternating direction multiplier method to perform a distributed solution for the total carbon emissions of the power system and the demand response compensation model with intraday flexible loads to obtain the intraday demand response results.

[0115] Step 4.1: In order to apply the alternating direction multiplier method to the demand response model, two power load variables are introduced: Auxiliary variables: (1) Grid side power load ; (2) Load side power load: . Define the decision variables on the grid side at time t and the decision variables on the load side at time t ,in, They represent the active power and reactive power of the intraday flexible load at node a on the grid side at time t, They represent the active power and reactive power of the intraday flexible load at node a on the load side at time t respectively.

[0116] Step 4.2: Use the alternating direction multiplier method to rewrite the low-carbon demand response model into a consensus optimization problem. To obtain the final solution for the optimal demand response, the power loads in the common constraints on the grid side and the local constraints on the load side should be equal. Use Equations (22) to (26) to construct the transformed constraint conditions:

[0117] (twenty two)

[0118] (twenty three)

[0119] (twenty four)

[0120] (25)

[0121] (26)

[0122] Step 4.3, define the current number of iterations as , and initialize =0, and initialize the The active power of the flexible load on the load side node a at time t under the iteration and reactive power , initialize the The active power of the flexible load on the grid side node a at time t under the iteration and reactive power , initialize the The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier .

[0123] Step 4.4: Use formula (27) to construct The objective function under the iteration , and under the constraints after transformation, The objective function under the iteration Solve and get The active power of the load on node a on the grid side at time t in the iteration and reactive power :

[0124] (27)

[0125] In formula (27), is the weight factor.

[0126] Step 4.5, , and After substituting into formula (27), Solve and get The active power of the flexible load on the load side node a at time t under the iteration and reactive power ;

[0127] Step 4.6: According to formula (28)-formula (29), Update to get The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier ;

[0128] (28)

[0129] (29)

[0130] Step 4.7, if and If the maximum value between the two is less than the set convergence criterion, it means that the intraday demand response result is and , all participants in the demand response during the day will be Then adjust its load, otherwise, Assign to Then, return to step 4.4 and execute the sequence.

[0131] In this embodiment, an electronic device includes a memory and a processor, wherein the memory is used to store a program that supports the processor to execute the above method, and the processor is configured to execute the program stored in the memory.

[0132] In this embodiment, a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above method are executed.

Claims

1. A low-carbon demand response method for distributed distribution networks considering intraday flexible loads, characterized in that: The following steps are involved: Step 1: Take the total carbon emissions of the power system at time t As the goal, the uncertainty model of total carbon emissions is established using formulas (1) to (3): (1) (2) (3) In formula (1) to formula (3), is the number of generators, is the active power generated by the i-th generator at time t, The output power of the i-th generator is The linear carbon emission function, is the carbon emission coefficient of the i-th generator, is the type of distributed power supply, is the type set of distributed power sources, for Carbon emission coefficient of distributed power generation type, for Type of active power generated by distributed generation, is the average carbon emission coefficient of the transmission grid power; Step 2: Take the demand response compensation value of the intraday flexible load at node a at time t as As the goal, the objective function of the demand response compensation model is established using formula (4): (4) In formula (4), - Represents 5 interval endpoint values, and there are < < < < , represents the active power of the intraday flexible load at node a at time t, represents the benchmark active power of the intraday flexible load at node a at time t, 、 、 、 is the compensation coefficient corresponding to 4 different intervals; A series of equivalent linear constraints of the demand response compensation model are constructed using equations (5) to (8): (5) (6) (7) (8) Step 3: Construct a final model consisting of an uncertainty model of the total carbon emissions of the power system and a demand response compensation model with intraday flexible loads; Step 3.1: According to formula (9), establish the demand response compensation model of total carbon emissions in the power system and flexible load within the day. s The objective function J after time: (9) In formula (9), T represents the upper limit of the intraday flexible load adjustment time, and ID represents the set with intraday flexible loads; Step 3.2: Establish the overall constraints of the total carbon emissions of the power system and the demand response compensation model with intraday flexible load; Step 4: Use the alternating direction multiplier method to perform distributed solution on the total carbon emissions of the power system and the demand response compensation model with intraday flexible load to obtain the intraday demand response results.

2. A distributed distribution network low-carbon demand response method considering intraday flexible load according to claim 1, characterized in that: The step 3.2 includes the following steps: Step 3.2.

1. Determine the output power constraints of the generator and distributed generation using equations (10) and (11): (10) (11) In formula (10)-formula (11), 、 represents the lower and upper limits of the active power generated by the i-th generating equipment at time t, 、 represents the lower and upper limits of the reactive power generated by the i-th generating equipment at time t, represents the reactive power generated by the i-th generating equipment at time t; Step 3.2.2: Determine the power flow constraints of the radial distribution network using equations (12) to (14): (12) (13) (14) In formula (12)-formula (14), is the active power flowing from the branch connected to node a and node b into node b at time t, is the set of power generation equipment connected to node b, m is any node connected to node b except node a, is the active power flowing out of node b from the branch connected to node b and node m at time t, is the set of loads on node b, is the active power of the load on node b at time t, is the reactive power flowing from the branch connected to node a and node b into node b at time t, is the reactive power flowing out of node b from the branch connected to node b and node m at time t, is the reactive power of the load on node b at time t, 、 They represent the square of the voltage at node a and node b at time t, 、 Represent the resistance and reactance of the branch connected to node a and node b respectively; Step 3.2.3: Use Equation (15) to determine the branch capacity constraint: (15) In formula (15), Indicates the maximum capacity allowed on the branch connected to nodes a and b; Step 3.2.4: Use equations (16) and (17) to construct node voltage constraints: (16) (17) In formula (16)-formula (17), 、 They represent the lower and upper limits of the voltage on node a, represents the voltage on node a at time t, It represents the voltage of the node numbered bus-0 on the bus connected to the transmission network at time t. Indicates the reference voltage; Step 3.2.5: Use equations (18) to (21) to establish a load constraint with intraday flexibility: (18) (19) (20) (21) In formula (18) to formula (21), is the response delay time of the load on node a, 、 They represent the lower and upper limits of the active power of the intraday flexible load at node a at time t, Represents the time interval between adjacent moments, 、 They are the intraday flexible loads on node a running to The lower and upper bounds of energy consumption at all times, represents the power factor angle of the ath node, Indicates the adjustment time when the flexible load starts within the day.

3. A distributed distribution network low-carbon demand response method considering intraday flexible load according to claim 2, characterized in that: The step 4 comprises the following steps: Step 4.1: Define the decision variables on the grid side at time t and the decision variables on the load side at time t ,in, They represent the active power and reactive power of the intraday flexible load at node a on the grid side at time t, They represent the active power and reactive power of the intraday flexible load at node a on the load side at time t respectively; Step 4.2: Use equations (22) to (26) to construct the transformed constraint conditions: (22) (23) (24) (25) (26) Step 4.3, define the current number of iterations as , and initialize =0, and initialize the The active power of the flexible load on the load side node a at time t under the iteration and reactive power , initialize the The active power of the flexible load on the grid side node a at time t under the iteration and reactive power , initialize the The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier ; Step 4.4: Use formula (27) to construct The objective function under the iteration , and under the constraints after transformation, The objective function under the iteration Solve and get The active power of the load on node a on the grid side at time t in the iteration and reactive power : (27) In formula (27), is the weight factor; Step 4.5, , and After substituting into formula (27), Solve and get The active power of the flexible load on the load side node a at time t under the iteration and reactive power ; Step 4.6: According to formula (28)-formula (29), Update to get The active power multiplier of the intraday flexible load at node a at time t under the iteration and reactive power multiplier ; (28) (29) Step 4.7, if and If the maximum value between the two is less than the set convergence criterion, it means that the intraday demand response result is and Otherwise, Assign to Then, return to step 4.4 and execute the sequence.

4. An electronic device comprising a memory and a processor, characterized in that: The memory is used to store a program that supports the processor to execute the distributed distribution network low-carbon demand response method according to any one of claims 1 to 3, and the processor is configured to execute the program stored in the memory.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the distributed distribution network low-carbon demand response method according to any one of claims 1 to 3 are executed.

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