A load precise regulation method and system based on power distribution automation

Abstract

This invention relates to a method and apparatus for precise load control based on distribution automation. The method includes the following steps: constructing a controllable load resource pool for the distribution network automation system based on controllable devices at different levels in the line; conducting routine grid load monitoring and confirming the control range according to a given control objective; determining the task type based on time urgency and generating a load control scheme for the control range based on the task type and the user load group attribute information, and providing a list of controllable devices; and selecting the execution device based on the list of controllable devices during control execution. This invention can accurately delineate control devices, thereby enabling flexible load control.

Description

Technical Field

[0001] This invention relates to the field of orderly power consumption technology in power distribution networks, and in particular to a method and system for precise load control based on power distribution automation. Background Technology

[0002] With rapid economic and social development, the demand for social energy is constantly increasing, highlighting the problem of energy imbalance between the economy and society. Coupled with uneven regional energy supply and consumption distribution and insufficient emergency support capabilities between regions, orderly electricity use is inevitable in the future. The implementation of orderly electricity use requires cooperation from multiple parties. Relevant control departments of power supply companies at all levels should promptly initiate orderly electricity use work based on power supply capacity and load conditions, and conduct relevant statistical work on daily load and consumption, promptly completing electricity balancing work when power consumption changes. With the continuous improvement of information technology on the distribution network side, it is possible to utilize automated systems to coordinate the comprehensive allocation of grid resources and loads, achieving mutual assistance and interaction between power sources, the grid, and user loads, and improving the effectiveness of electricity balancing work on the medium-voltage side of the distribution network.

[0003] Distribution automation comprehensively utilizes computer, information, and communication technologies to provide data acquisition support for distribution network management through information system integration. It enables monitoring and control of the distribution network, improves grid operation through switching and transfer, and enhances power supply reliability through functions such as feeder automation. Currently, due to the lack of precise monitoring of user load data, when power shortages occur and power needs to be balanced, the system often relies on crude control methods such as directly cutting off power to large industrial and commercial users and the entire feeder system, which can have significant negative impacts on the economy and society. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method and system for precise load control based on power distribution automation, which can accurately delineate control equipment and thus flexibly control the load.

[0005] The technical solution adopted by this invention to solve its technical problem is: to provide a method for precise load control based on power distribution automation, comprising the following steps:

[0006] Based on the controllable devices at different levels in the line, a controllable load resource pool is constructed for the distribution network automation system. The controllable load resource pool uses controllable user load groups as resources and is created and maintained according to the user load group configuration that each controllable device can cover. The attribute information of the user load group includes controllable device ID, user attributes, and load size.

[0007] Conduct routine power grid load monitoring and determine the control range based on given control targets;

[0008] The task type is determined based on the time urgency, and a load control scheme for the control range is generated based on the task type and the user load group attribute information, and a list of controllable devices is provided.

[0009] When performing control, the execution device is selected based on the list of controllable devices.

[0010] The controllable equipment includes boundary switches, branch switches, segment switches, and outgoing line switches on the feeder.

[0011] The user attributes include user type and user importance. The user type includes industrial users, residential users, commercial users and other users. The user importance includes important category, power supply guarantee category, elimination category, restriction category, excess capacity category and other category.

[0012] The load control scheme, which generates the control range based on the task type and the user load group attribute information, provides a list of controllable devices, including:

[0013] Determine the estimated load data to be used based on the task type;

[0014] The user load that needs to be regulated is determined by stratifying the controllable equipment at different levels based on its importance.

[0015] The regulated user load is sorted from largest to smallest based on the controllable load data of each level of controllable equipment and output to obtain a list of controllable equipment.

[0016] When determining the estimated load data to be used based on the task type, if the task type is a normalized load control task, the estimated load data is long-term estimated load data; if the task type is an abnormalized load control task, the estimated load data is short-term estimated load data; and if the task type is an emergency load control task, the estimated load data is real-time monitored load data.

[0017] The method of determining the user load that needs to be regulated based on the importance of controllable devices at different levels includes:

[0018] Select the boundary switch, and take the user loads of the eliminated, restricted, excess capacity and other types of industrial users controlled by the boundary switch as the first regulated user loads. Use the estimated load data to estimate the first regulated user loads to obtain the first total load. Determine whether the first total load can meet the demand. If it cannot meet the demand, proceed to the next step.

[0019] Select a branch switch, and take the user loads of the eliminated, restricted, excess capacity and other categories among the commercial users, industrial users and other users controlled by the branch switch as the second regulated user loads. Use the estimated load data to estimate the second regulated user loads to obtain the second total load. Determine whether the second total load can meet the demand. If it cannot meet the demand, proceed to the next step.

[0020] Select a sectionalizing switch, and transfer the power supply of important users and power supply protection users controlled by the sectionalizing switch to the line with low line load rate. The remaining user load is regarded as the third regulated user load. The estimated load data is used to estimate the third total load of the third regulated user load. It is determined whether the third total load can meet the demand. If it cannot meet the demand, proceed to the next step.

[0021] Select the outgoing switch, and treat all user loads controlled by the outgoing switch, except for important and power supply protection users, as the fourth regulated user loads, and increase the regulated load resources in the order of industrial users, commercial users, other users, and residential users.

[0022] After selecting the execution device based on the list of controllable devices during the control process, the method further includes:

[0023] Real-time data comparison is performed through remote signaling data retrieval;

[0024] The control target is determined based on the comparison results. If the control target is not achieved, the emergency load control task is used to re-control the load.

[0025] The technical solution adopted by this invention to solve its technical problem is: to provide a load precision control device based on power distribution automation, comprising:

[0026] The construction module is used to build a controllable load resource pool for the distribution network automation system based on controllable devices at different levels in the line. The controllable load resource pool uses controllable user load groups as resources and is created and maintained according to the user load group configuration that each controllable device can cover. The attribute information of the user load group includes controllable device ID, user attributes and load size.

[0027] The control range confirmation module is used for routine power grid load monitoring and to confirm the control range based on the given control target.

[0028] The control scheme generation module is used to determine the task type based on time urgency, and generate a load control scheme for the control range based on the task type and the user load group attribute information, and provide a list of controllable devices;

[0029] The execution module is used to select the execution device based on the list of controllable devices when performing control.

[0030] The technical solution adopted by the present invention to solve its technical problem is: to provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-mentioned load precision control method based on power distribution automation.

[0031] The technical solution adopted by the present invention to solve its technical problem is: to provide a computer-readable storage medium on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of the above-mentioned load precision control method based on power distribution automation.

[0032] Beneficial effects

[0033] By adopting the above-mentioned technical solution, this invention has the following advantages and positive effects compared with the prior art: Based on multiple influencing factors such as time urgency and scope of impact, this invention considers the monitoring, decision-making, and control functions of existing power distribution automation systems, constructs a corresponding workflow, and achieves precise load regulation. During regulation, this invention, based on attributes such as different switching equipment levels of controllable devices, controllable load size, electricity consumption type, and user type, uses a layered selection method, gradually increasing the control range from low to high importance, and flexibly achieving precise load regulation by progressively expanding the degree of influence. This effectively addresses potential electricity load gaps during peak electricity consumption periods, minimizing the negative impact of power supply and demand imbalances on the economy and society. Attached Figure Description

[0034] Figure 1 This is a flowchart of the first embodiment of the present invention, which describes a method for precise load control based on power distribution automation.

[0035] Figure 2 This is a flowchart of generating a load control scheme in the first embodiment of the present invention;

[0036] Figure 3 This is an example diagram of feeder L1 in an embodiment of the present invention;

[0037] Figure 4 This is an example diagram of feeder L2 in an embodiment of the present invention. Detailed Implementation

[0038] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0039] The first embodiment of the present invention relates to a method for precise load control based on power distribution automation, such as... Figure 1 As shown, it includes the following steps:

[0040] Step S1: Construct a controllable load resource pool for the distribution network automation system based on controllable devices at different levels in the line.

[0041] In this step, controllable equipment refers to boundary switches, branch switches, sectionalizing switches, and outgoing line switches on the feeder. The controllable load resource pool is a management mechanism that uses controllable user load groups as resources. It is configured based on the user load groups that each controllable device can cover, and is created and maintained by the distribution network automation system. The attribute information of each user load group includes the controllable device ID, user attributes, load size, etc.

[0042] The user attributes include two parts: user type and user importance. The user type classification includes industrial users, residential users, commercial users and other users, etc. The importance classification includes important category, power supply protection category, elimination category, restriction category, excess capacity category and other category, etc. The precise load control in this implementation method will be based on these.

[0043] Step S2: Conduct routine power grid load monitoring and confirm the control range based on the control targets given by the higher authorities.

[0044] In this step, grid load monitoring is conducted based on the distribution network automation system. The control targets are determined based on the control plans of higher-level departments, orderly electricity consumption requirements, and the system's existing early warning functions. The control scope mainly refers to feeders that require power rationing.

[0045] Step S3: Determine the task type based on time urgency, and generate a load control scheme for the control range based on the task type and the user load group attribute information, and provide a list of controllable devices.

[0046] This step mainly includes three types of tasks: routine load control, non-routine load control, and emergency load control. The urgency of these three task strategies is progressively determined by the response time of the task. Routine load control refers to a cyclical control strategy issued in advance according to the orderly electricity consumption target, guiding enterprise users to use electricity in an orderly and staggered manner. Non-routine load control refers to a control strategy that is not feasible for the orderly electricity consumption demand under existing routine control, requiring automatic generation and issuance of control strategies based on the current load situation and forecast data, giving users a certain response time. Emergency load control refers to a control strategy that is extremely urgent and has high timeliness requirements, requiring immediate response and rapid execution to meet the target requirements.

[0047] The load control scheme refers to the process of controlling power supply within a specified range by remotely operating controllable equipment according to a given time sequence and control intervals, after steps such as load transfer and load shedding. The list of controllable equipment includes controllable switching equipment for both load transfer and load shedding; load transfer mainly involves transferring important users to other lightly loaded lines and needs to be executed independently first.

[0048] Load control schemes require analyzing the controllable load level step by step based on user boundary switches, branch switches, sectionalizing switches, and outgoing line switches to determine the required control levels. Figure 2 As shown, the specific confirmation process is as follows:

[0049] S31. Based on the urgency of the task type, for routine load control tasks, it is necessary to adjust based on long-term estimated load data; for non-routine load control tasks, it is necessary to adjust based on short-term estimated load data; and for emergency load control tasks, it is necessary to adjust based on real-time monitored load data.

[0050] S32. Prioritize the selection of boundary switches. At this time, the loads of eliminated users, restricted users, users with excess capacity, and other users in industrial electricity consumption are regulated. That is, the loads of eliminated users, restricted users, users with excess capacity, and other users in the industrial users controlled by the boundary switches are taken as the first user loads to be regulated. If the total load collected (i.e., the first total load is obtained by estimating the first user load using the estimated load data) can meet the demand, the list of adjustable boundary switches is submitted and the process is transferred to S37. If the regulation target cannot be achieved, the process is transferred to S33.

[0051] S33. Next, select a branch switch. At this time, regulate the obsolete users, restricted users, excess capacity users, and other users among commercial service users, industrial users, and other users. That is, the loads of obsolete users, restricted users, excess capacity users, and other users among commercial users, industrial users, and other users controlled by the branch switch are taken as the second regulated user loads. If the total load collected (i.e., the second total load is obtained by estimating the second regulated user load using the estimated load data) can meet the demand, submit the list of adjustable branch switches and go to S37. If the regulation target cannot be achieved, go to S34.

[0052] S34. Select the sectionalizing switch again. At this time, it is necessary to avoid sectionalizing power outages for important users and users requiring power supply. Power can be transferred to lines with low load rates. The remaining user loads are used as the third controlled user loads. If the total load (i.e., the third total load is obtained by estimating the third controlled user load using the estimated load data) can meet the demand, submit the list of controllable sectionalizing switches and proceed to S37. If the control target cannot be achieved, proceed to S35.

[0053] S35. Finally, select the outgoing switch and use the whole line for regulation. In order to avoid the regulation of important users and power supply protection users, the loads of other users controlled by the outgoing switch, except for important users and power supply protection users, are all treated as the fourth regulated user loads. The regulated load resources are added in the order of industrial electricity consumption, commercial service electricity consumption, other electricity consumption, and residential electricity consumption. If all the collected loads can meet the demand, submit the list of regulated outgoing switches and go to S37. If the regulation target cannot be achieved, go to S36.

[0054] S36. If the control target cannot be achieved, the process ends.

[0055] S37. Sort the controllable load values ​​of the switches at this level from largest to smallest, output the list of controllable devices, and end the process.

[0056] Step S4: When performing control, select the execution device according to the list of controllable devices. Specifically, when selecting the execution device, the controllable device list at that level should first be arranged in order of the magnitude of the affected load value, and then, based on the total load to be cut, select those controllable devices that slightly exceed the total value.

[0057] In step S5, the dispatcher reviews the plan and performs one-click sequential control. After completion, a judgment is made, and the process returns to S3 or ends depending on the completion status.

[0058] In this step, "one-click sequential control" refers to the entire control process executed automatically by the distribution automation system according to the load control plan, from transferring load to supplying power to disconnecting the load. "After completion, a judgment is made" means that after control, real-time data is compared using remote signaling data retrieval, and the result is used to determine whether the control target has been achieved. For routine load control tasks, execution must be based on the established periodic controllable equipment strategy. If the result after execution does not meet the control target, the process returns to S3 for re-execution, at which point the control task is converted to an emergency load control task. For non-routine load control and emergency load control tasks, if the result after execution does not meet the control target, the process also returns to S3 for re-execution, at which point the control task is converted to an emergency load control task.

[0059] The present invention will be further illustrated by a specific embodiment below.

[0060] In this embodiment, the controllable feeders of a local power distribution automation system are L1 and L2, and the lines are as follows: Figure 3 and Figure 4 As shown, all the marked switches are automatic switches.

[0061] Step 1: Based on the controllable equipment at different levels of the line, construct a controllable load resource pool for precise regulation of the automation system.

[0062] Among them, feeder L1 involves outgoing switch S101, including sectionalizing switches S102 and S103, branching switch S104, and boundary switches S105, S106, S107, S108, S109, and S110; feeder L2 involves outgoing switch S201, including sectionalizing switches S202 and S203, branching switches S204 and S205, and boundary switches S206, S207, S208, S209, and S210.

[0063] The controllable load resource pool constructed by the feeder includes the following information: switchgear number, controllable load size, user attributes, and user type:

[0064]

[0065] Step 2: Conduct routine power grid load monitoring, and based on the control targets given by the superior department, reduce the short-term load by 90 kW every day from 13:00 to 15:00 according to the system forecast. The control range covers feeder L1 and feeder L2.

[0066] Step 3: Based on routine load control, generate a load control plan, provide a list of controllable equipment, and publicize the users to be controlled.

[0067] Specifically, for the boundary switches of line L1, due to the important user attribute of S110, it is determined that switches S107 and S109 can be selected, which can control a total of 65 kW. For the boundary switches of line L2, since they are all non-industrial users, there are no switches that can be controlled. Therefore, in the boundary switches, there are no switches in the load transfer step of the controllable equipment list, and the load shedding step involves switches S107 and S109, involving a total of 65 kW, which cannot meet the control target.

[0068] Secondly, regarding the branch switches of line L1, since S110 is an important user category, no switch is controllable. Therefore, switches S107 and S109 can still be selected, which can control a total of 65 kW. For the branch switches of line L2, S204 is for residential electricity use, so switch S205 is controllable. Therefore, switch S205 can be selected, which can control a total of 30 kW. Thus, after adding the branch switches, the load transfer step in the controllable equipment list has no switches, while the load shedding step involves switches S107, S109, and S205, involving a total of 95 kW. At this point, the control target has been met, and the relevant information is output to the system.

[0069] In accordance with the orderly electricity consumption target, the pre-released periodic control strategy is to control the S109, S107, and S205 switches, which are listed in descending order of the controllable equipment list, from 13:00 to 15:00 every day. By executing the load shedding step, the short-term load can be reduced by 95 kW.

[0070] Step 4: From 13:00 to 15:00 every day, select switches S109, S107, and S205 according to the control strategy to perform load shedding and determine a reduction of 95kWh of short-term load.

[0071] Step 5: At 13:00 every day, the dispatcher reviews the current plan and performs one-click sequential control. After the process is completed, a judgment is made to confirm that the execution result is successful.

[0072] Step 6: Problems occurred on the third day. Due to the overall load increase, it was found that even after reducing the short-term load by 95k kW, the overall target could not be met. The superior department required that another 20k kW of short-term load be cut off within half an hour. Therefore, an unconventional load control task was formulated, and the S203 switch was selected to cut off the load, which can reduce the short-term load by 25k kW.

[0073] In accordance with the control targets set by higher authorities, non-routine load control is implemented by selecting sectional switches. Line L1's S102 involves industrial and residential electricity consumption, while S103 involves residential electricity consumption, so no switch is available for control. Line L2's S202 involves commercial and residential electricity consumption, while S203 involves commercial and service electricity consumption, so switch S203 can be selected, which can control a total of 25 kW.

[0074] Step 7: At 13:30, the dispatcher reviews the plan and performs a one-click sequential control. After completion, a judgment is made to confirm the successful execution result and end the workflow.

[0075] It is not difficult to see that this invention, based on multiple influencing factors such as time urgency and scope of impact, and considering the monitoring, decision-making, and control functions of existing power distribution automation systems, constructs a corresponding workflow to achieve precise load regulation. During regulation, this invention, based on attributes such as different switching equipment levels of controllable devices, controllable load size, electricity consumption type, and user type, uses a tiered selection approach, gradually increasing the control range from low to high importance. This step-by-step expansion of the impact flexibly achieves precise load regulation, effectively addressing potential power load gaps during peak electricity consumption periods and minimizing the negative impact of power supply-demand imbalances on the economy and society.

[0076] The second embodiment of the present invention relates to a load precision control device based on power distribution automation, comprising:

[0077] The construction module is used to build a controllable load resource pool for the distribution network automation system based on controllable devices at different levels in the line. The controllable load resource pool uses controllable user load groups as resources and is created and maintained according to the user load group configuration that each controllable device can cover. The attribute information of the user load group includes controllable device ID, user attributes and load size.

[0078] The control range confirmation module is used for routine power grid load monitoring and to confirm the control range based on the given control target.

[0079] The control scheme generation module is used to determine the task type based on time urgency, and generate a load control scheme for the control range based on the task type and the user load group attribute information, and provide a list of controllable devices;

[0080] The execution module is used to select the execution device based on the list of controllable devices when performing control.

[0081] The controllable equipment includes boundary switches, branch switches, sectionalizing switches, and outgoing line switches on the feeder. The user attributes include user type and user importance. The user type includes industrial users, residential users, commercial users, and other users; the user importance includes categories such as critical, power supply protection, phase-out, restricted, excess capacity, and other.

[0082] The control scheme generation module includes:

[0083] An estimated load data determination unit is used to determine the estimated load data to be used based on the task type.

[0084] The user load determination unit is used to determine the user load that needs to be regulated based on the importance of controllable equipment at different levels.

[0085] The output unit is used to sort and output the regulated user load from largest to smallest according to the controllable load data of each level of controllable equipment, so as to obtain a list of controllable equipment.

[0086] When the task type is a normalized load control task, the estimated load data determination unit uses long-term estimated load data; when the task type is an abnormalized load control task, the estimated load data uses short-term estimated load data; and when the task type is an emergency load control task, the estimated load data uses real-time monitored load data.

[0087] The regulated user load determination unit includes:

[0088] The first determining subunit is used to select the boundary switch, take the user loads of the eliminated, restricted, excess capacity and other types of industrial users controlled by the boundary switch as the first regulated user loads, and use the estimated load data to estimate the first regulated user loads to obtain the first total load, and determine whether the first total load can meet the demand. If it cannot meet the demand, the second determining subunit is used.

[0089] The second determining subunit is used to select the branch switch, and take the user loads of the eliminated, restricted, excess capacity and other categories among the commercial users, industrial users and other users controlled by the branch switch as the second controlled user loads, and use the estimated load data to estimate the second controlled user loads to obtain the second total load, and determine whether the second total load can meet the demand. If it cannot meet the demand, the third determining subunit is used.

[0090] The third determining subunit is used to select the sectionalizing switch, transfer the power supply of important users and power supply protection users controlled by the sectionalizing switch to the line with low line load rate, and the remaining user load is used as the third regulated user load. The estimated load data is used to estimate the third total load of the third regulated user load, and it is determined whether the third total load can meet the demand. If it cannot meet the demand, the fourth determining subunit is used.

[0091] The fourth determination subunit is used to select outgoing line switches. All user loads controlled by the outgoing line switches, except for important and power supply protection users, are treated as the fourth regulated user loads. The regulated load resources are added in the order of industrial users, commercial users, other users, and residential users.

[0092] The aforementioned load precision control device based on power distribution automation also includes:

[0093] The comparison module is used for real-time data comparison through remote signaling data retrieval.

[0094] The judgment module is used to determine whether the control target has been achieved based on the comparison results. If the control target has not been achieved, the emergency load control task is used to regenerate the control scheme using the control scheme generation module.

[0095] The third embodiment of the present invention relates to an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the load precision control method based on power distribution automation of the first embodiment.

[0096] The fourth embodiment of the present invention relates to a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the load precision control method based on power distribution automation of the first embodiment.

[0097] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0098] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0099] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0100] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0101] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0102] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for precise load control based on power distribution automation, characterized in that, Includes the following steps: A controllable load resource pool is constructed for the distribution network automation system based on controllable devices at different levels in the line. This controllable load resource pool uses controllable user load groups as resources and is created and maintained according to the user load group configuration that each controllable device can cover. The attribute information of the user load group includes the controllable device ID, user attributes, and load size. The user attributes include user type and user importance. The user type includes industrial users, residential users, commercial users, and other users. The user importance includes categories such as important, power supply guarantee, phase-out, restricted, excess capacity, and other. Conduct routine power grid load monitoring and determine the control range based on given control targets; The task type is determined based on time urgency, and a load control scheme for the control range is generated based on the task type and the user load group attribute information, providing a list of controllable devices, including: Determine the estimated load data to be used based on the task type; The user load that needs to be regulated is determined based on the importance of controllable devices at different levels, including: Select the boundary switch, and take the user loads of the eliminated, restricted, excess capacity and other types of industrial users controlled by the boundary switch as the first regulated user loads. Use the estimated load data to estimate the first regulated user loads to obtain the first total load. Determine whether the first total load can meet the demand. If it cannot meet the demand, proceed to the next step. Select a branch switch, and take the user loads of the eliminated, restricted, excess capacity and other categories among the commercial users, industrial users and other users controlled by the branch switch as the second regulated user loads. Use the estimated load data to estimate the second regulated user loads to obtain the second total load. Determine whether the second total load can meet the demand. If it cannot meet the demand, proceed to the next step. Select a sectionalizing switch, and transfer the power supply of important users and power supply protection users controlled by the sectionalizing switch to the line with low line load rate. The remaining user load is regarded as the third regulated user load. The estimated load data is used to estimate the third total load of the third regulated user load. It is determined whether the third total load can meet the demand. If it cannot meet the demand, proceed to the next step. Select the outgoing switch, and treat all user loads controlled by the outgoing switch except for important and power supply protection users as the fourth regulated user loads, and increase the regulated load resources in the order of industrial users, commercial users, other users and residential users. The regulated user load is sorted from largest to smallest based on the regulated load data of the controllable devices at each level, and the sorted list of controllable devices is output. When performing control, the execution device is selected based on the list of controllable devices.

2. The method for precise load control based on distribution automation according to claim 1, characterized in that, The controllable equipment includes boundary switches, branch switches, segment switches, and outgoing line switches on the feeder.

3. The method for precise load control based on distribution automation according to claim 1, characterized in that, When determining the estimated load data to be used based on the task type, if the task type is a normalized load control task, the estimated load data is long-term estimated load data; if the task type is an abnormalized load control task, the estimated load data is short-term estimated load data; and if the task type is an emergency load control task, the estimated load data is real-time monitored load data.

4. The method for precise load control based on distribution automation according to claim 1, characterized in that, After selecting the execution device based on the list of controllable devices during the control process, the method further includes: Real-time data comparison is performed through remote signaling data retrieval; The control target is determined based on the comparison results. If the control target is not achieved, the emergency load control task is used to re-control the load.

5. A load precision control device based on power distribution automation, characterized in that, include: The construction module is used to build a controllable load resource pool for the distribution network automation system based on controllable devices at different levels in the line. The controllable load resource pool uses controllable user load groups as resources and is created and maintained according to the user load group configuration that each controllable device can cover. The attribute information of the user load group includes the controllable device ID, user attributes, and load size. The user attributes include user type and user importance. The user type includes industrial users, residential users, commercial users, and other users. The user importance includes important categories, power supply guarantee categories, phase-out categories, restricted categories, excess capacity categories, and other categories. The control range confirmation module is used for routine power grid load monitoring and confirming the control range based on a given control target. The control scheme generation module is used to determine the task type based on time urgency and generate a load control scheme for the control range based on the task type and the user load group attribute information, providing a list of controllable equipment. The control scheme generation module includes: An estimated load data determination unit is used to determine the estimated load data to be used based on the task type. The user load determination unit is used to determine the user load that needs to be regulated based on the importance of controllable equipment at different levels. The output unit is used to sort and output the regulated user load from largest to smallest according to the regulated load data of the controllable devices at each level, so as to obtain a list of regulated devices. The regulated user load determination unit includes: The first determining subunit is used to select the boundary switch, take the user loads of the eliminated, restricted, excess capacity and other types of industrial users controlled by the boundary switch as the first regulated user loads, and use the estimated load data to estimate the first regulated user loads to obtain the first total load, and determine whether the first total load can meet the demand. If it cannot meet the demand, the second determining subunit is used. The second determining subunit is used to select the branch switch, and take the user loads of the eliminated, restricted, excess capacity and other categories among the commercial users, industrial users and other users controlled by the branch switch as the second controlled user loads, and use the estimated load data to estimate the second controlled user loads to obtain the second total load, and determine whether the second total load can meet the demand. If it cannot meet the demand, the third determining subunit is used. The third determining subunit is used to select the sectionalizing switch, transfer the power supply of important users and power supply protection users controlled by the sectionalizing switch to the line with low line load rate, and the remaining user load is used as the third regulated user load. The estimated load data is used to estimate the third regulated user load to obtain the third total load, and it is determined whether the third total load can meet the demand. If it cannot meet the demand, the fourth determining subunit is used. The fourth determination subunit is used to select outgoing line switches. All user loads controlled by the outgoing line switches, except for important and power supply protection users, are taken as the fourth regulated user loads. The regulated load resources are added in the order of industrial users, commercial users, other users and residential users. The execution module is used to select the execution device based on the list of controllable devices when performing control.

6. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the load precision control method based on power distribution automation as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the load precision control method based on power distribution automation as described in any one of claims 1-4.

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