A source-load collaborative scheduling method based on day-ahead and intra-day correction

Abstract

The application discloses a source-load collaborative scheduling method based on day-ahead and intra-day correction, relates to the technical field of source-load collaborative scheduling of power systems, and comprises the following steps: source-load resource and power distribution network data are acquired to form source-load scheduling basic data; day-ahead reference power and power boundary are determined according to the basic data, historical error and time-of-use electricity price, a day-ahead source-load collaborative scheduling plan is generated; intra-day power is acquired and power gap is determined, an unaffected time period is locked, an intra-day correction time window is determined, correction power is distributed in the time window, and an intra-day source-load correction task is generated through network sensitivity screening and power flow checking; the correction task is executed, residual deviation is calculated according to actual correction power, standby source-load adjustment instructions are activated, and a scheduling execution result is generated. The application can limit the intra-day correction influence time period and realize linkage between standby source-load adjustment and actual response state.

Description

Technical Field

[0001] This invention relates to the field of power system source-load coordinated dispatch technology, and in particular to a source-load coordinated dispatch method based on day-ahead intraday correction. Background Technology

[0002] With the continuous enhancement of the volatility of renewable energy output and the adjustability of the load side, source-load coordinated dispatch has gradually become an important mode of operation and control of distribution networks. Conventional methods usually formulate day-ahead source-load coordinated dispatch plans based on renewable energy power forecasting, load forecasting, time-of-use pricing, adjustable power source operation constraints, and flexible load production constraints. They also continuously acquire actual power and ultra-short-term forecast power within the day, maintain source-load balance by adjusting adjustable power sources, flexible loads, and tie-line power, and verify the operating status of distribution networks such as line, transformer, and node voltages.

[0003] However, conventional intraday scheduling usually recalculates correction schemes for a fixed rolling time domain, making it difficult to accurately define the actual affected time period based on power gaps, power recovery, ramp-up and continuous operation constraints, which may change the original time period that did not need correction. At the same time, when the primary regulation resources are insufficient, there is a lack of continuous linkage between the activation of backup regulation resources and the actual corrected power and remaining deviation, which may easily cause the intraday correction task to be inconsistent with the actual response status of resources. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, this invention provides a source-load coordinated scheduling method based on day-ahead intraday correction to solve the problems of inaccurate limitation of correction impact period and insufficient response linkage of backup adjustment resources in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: This invention provides a source-load coordinated scheduling method based on day-ahead and intraday correction, comprising: acquiring source-load resources and distribution network data to form basic data for source-load scheduling; determining the day-ahead reference power, the power boundary for balance correction, the boundary of flexible load power deviation, and the power balance cutoff period based on the basic data, historical errors, and time-of-use pricing, and generating a day-ahead source-load coordinated scheduling plan; acquiring intraday power, determining the power gap based on the day-ahead reference power and the previous day's execution status record, locking the unaffected period, and expanding the intraday correction time window based on power deviation, ramp-up, and continuous operation constraints; within the intraday correction time window, taking the intersection of the power boundary for balance correction and the actual adjustable range, jointly allocating the correction power and forming the expected flexible load power deviation trajectory, and generating an intraday source-load correction task containing primary and backup source-load adjustment instructions and activation conditions after network sensitivity screening and power flow verification; executing the intraday source-load correction task, calculating the remaining deviation based on the actual correction power and activating the backup source-load adjustment instructions, and generating an intraday execution status record and source-load coordinated scheduling execution result.

[0007] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and day-intraday correction described in this invention, the following steps are taken: A source-load coordinated scheduling area is determined; new energy resources, adjustable power resources, rigid loads, price-responsive flexible loads, command-responsive flexible loads, and tie lines are acquired and assigned resource numbers; the power, operating status, control status, and regulation constraints of each source-load resource are acquired, along with the production process status, planned electricity consumption, permitted electricity consumption periods, and electricity balance time of the flexible loads; the connection relationships, electrical parameters, operating limits, and switch status of distribution network equipment are acquired, generating the current distribution network topology; resource node associations are established based on resource access locations and the current distribution network topology, and the acquired data is time-aligned and validated; the data that passes the validation is combined into the basic data used for source-load scheduling.

[0008] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: Historical prediction errors are filtered according to the prediction object, prediction lead time, seasonal type, and date type to determine the predicted power range of new energy sources and the predicted power range of rigid loads; electricity consumption periods are adjusted according to time-of-use pricing and the electricity consumption constraints of price-responsive flexible loads to form the day-ahead baseline load; the day-ahead baseline power is determined based on the day-ahead baseline load, the planned utilization power of new energy sources, the planned output power of adjustable power sources, the planned electricity consumption power of command-response flexible loads, and the planned switching power of tie lines; and the power boundary for balance correction is determined based on the physical power margin, ramp-up achievable power, operational constraint-allowed adjustment power, and remaining network carrying capacity of each intraday adjustable resource.

[0009] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: The power balance cutoff period is determined based on the production task completion time of the instruction-response flexible load and the power recovery time in the demand response agreement; the boundary of the flexible load power deviation is determined based on the allowed early use of power, the allowed delayed use of power, the remaining allowed power usage period, and the power balance cutoff period; a power shortage scenario is formed based on the lower limit of the predicted power of new energy sources and the upper limit of the predicted power of rigid loads, and a new energy surplus scenario is formed based on the upper limit of the predicted power of new energy sources and the lower limit of the predicted power of rigid loads; under the power shortage scenario and the new energy surplus scenario, the day-ahead reference power, the power boundary used for balance correction, the boundary of the flexible load power deviation, and the distribution network operation limit are verified to generate a day-ahead source-load coordinated scheduling plan.

[0010] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead intraday correction described in this invention, the actual intraday power of the current period and the predicted intraday power of subsequent unexecuted periods are obtained according to the correspondence between the day-ahead scheduling period and the intraday correction period; the actual correction power, continuously executed source-load adjustment instructions, actual power deviation, occupied balance correction power and resource availability status are read from the execution status record of the previous day; the continuously executed actual correction power is included in the corresponding intraday correction period, and the power gap is determined based on the intraday power and the day-ahead reference power; the allowable deviation value of each intraday correction period is determined based on the measurement error, the prediction error reference boundary and the minimum effective adjustment power; the period in which the absolute value of the power gap is greater than the allowable deviation value is determined as the initial affected period, the period in which the execution has been completed is locked as the executed period, and the candidate unaffected period is marked.

[0011] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead intraday correction described in this invention, the initial range of the intraday correction time window is determined according to the earliest and latest initial affected time periods; the power recovery period is determined according to the boundary of actual power deviation, flexible load power deviation, and power balance cutoff time, and the power recovery period is included in the intraday correction time window; the ramp-up period is determined according to the power change time required for each intraday adjustable resource to reach the target power and recover to the day-ahead reference power, and is included in the intraday correction time window; the continuous operation constraint impact period is determined according to the minimum continuous operation time, minimum continuous outage time, allowable duration of a single adjustment, and minimum interval between adjacent adjustment actions, and is included in the intraday correction time window; various included time periods are merged and the impact of newly added constraints is repeatedly checked until the intraday correction time window no longer expands, and the candidate unaffected time periods outside the intraday correction time window are locked as unaffected time periods.

[0012] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: The power boundary for balance correction and the power gap within the intraday correction time window in the day-ahead source-load coordinated scheduling plan are read, and the occupied balance correction power and resource availability status in the execution status record of the previous day are read. The actual adjustable range is determined based on the current power, allowable power range, power change rate, control interface status, and operational constraints of each intraday adjustable resource. The occupied balance correction power is deducted from the power boundary for balance correction, and the intersection of the deduction result and the actual adjustable range is determined as the remaining balance correction power range. Correction power is jointly allocated within the remaining balance correction power range to match the allocated correction power with the corresponding power gap and to satisfy ramping constraints, continuous operation constraints, and the unaffected period lockout status. The expected flexible load power deviation trajectory is formed based on the correction power allocated to the command-response flexible load, and allocation results that do not meet the boundary of flexible load power deviation and the power balance cutoff period requirements are filtered out. The retained allocation results are subjected to network sensitivity screening and power flow verification to determine the network-executable correction power allocation result.

[0013] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: First, a primary source-load correction allocation result is determined from the network's executable correction power allocation results based on power gap coverage, flexible load power deviation margin, and adjustment costs. Second, a primary source-load adjustment command is generated based on the primary source-load correction allocation result, including resource number, execution period, target power, correction power, allowable response time, and allowable execution deviation. Third, for the unresponsive state of the primary source-load adjustment command, a backup correction power allocation result is determined from the remaining network's executable correction power allocation results. Fourth, the power balance, flexible load power deviation, and distribution network operation status are verified when the backup correction power allocation result and the non-failed primary source-load adjustment command are executed together, and a backup source-load adjustment command is generated. Fifth, the activation conditions and execution order of the backup source-load adjustment command are configured based on the allowable response time, actual correction power, remaining deviation allowable value, and continuous confirmation duration. Sixth, the primary source-load adjustment command, the backup source-load adjustment command, the activation conditions, and the corresponding verification results are combined to generate an intraday source-load correction task.

[0014] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: First, the day-ahead plan version, distribution network topology version, basic data formation number used for source-load scheduling, and task validity period of the intraday source-load correction task are checked to determine the task execution status. Second, the operating status and control interface status of the resources corresponding to the primary source-load adjustment command are read, the primary source-load adjustment command is issued, and the command reception status and actual resource power are obtained. Third, the actual correction power formed by the primary source-load adjustment command is determined based on the execution reference power and the actual resource power, and the response status is determined based on the allowable response time and allowable execution deviation. Fourth, the actual correction power formed by the primary source-load adjustment command is subtracted from the power gap to obtain the remaining deviation. Fifth, when the remaining deviation exceeds the allowable value of the remaining deviation, and the primary source-load adjustment command is in any of the following states: not received, insufficient response, or interrupted response, the activation conditions of the backup source-load adjustment command and the availability status of the backup resources are checked. Sixth, a backup source-load adjustment command that meets the conditions is activated, and the actual correction power formed by the backup source-load adjustment command is included in the remaining deviation until the remaining deviation does not exceed the allowable value of the remaining deviation. Activation is stopped when there are no available backup source-load adjustment commands.

[0015] As a preferred embodiment of the source-load coordinated scheduling method based on day-ahead and intraday correction described in this invention, the following steps are taken: First, based on the day-ahead reference power consumption and actual power consumption of the command-response flexible load, the actual power deviation of the flexible load is updated, and the boundary state of the flexible load power consumption is determined. Second, the active power of the lines, transformer load rate, and node voltage during the execution of the source-load adjustment command are collected to determine the distribution network operating status. Third, the execution status of the source-load adjustment command, actual corrected power, remaining deviation, actual power deviation of the flexible load, resource availability status, and distribution network operating status are summarized to generate an intraday execution status record. Fourth, based on the intraday execution status record, the continuously executed source-load adjustment commands, occupied balance correction power, unavailable resources, and periods where deviations have not been eliminated are determined, and execution status data to be read in the next intraday correction cycle is generated. Fifth, the actual corrected power, actual corrected power consumption, actual power deviation trajectory of the flexible load, remaining deviation, execution results of the source-load adjustment command, and distribution network operating status within the intraday correction time window are summarized to generate the source-load coordinated scheduling execution result.

[0016] The beneficial effects of this invention are as follows: By comparing the intraday power with the daytime reference power to determine the power gap, and determining the allowable deviation value based on the measurement error, prediction error reference boundary, and minimum effective adjustment power, the initial affected period that requires intraday correction is identified, avoiding unnecessary source load adjustment directly triggered by normal measurement fluctuations or prediction deviations; by calculating the actual corrected power and remaining deviation based on the actual power of source load resources, and activating the backup source load adjustment command when the remaining deviation exceeds the allowable value and the primary source load adjustment command is in an unreceived state, an insufficient response state, or an interrupted response state, the backup source load adjustment command is continuously linked with the actual response status of resources and the unresolved power deviation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart of the source-load collaborative scheduling method based on the day-to-day correction.

[0019] Figure 2 This is a flowchart generated from the recent source-load coordinated scheduling plan.

[0020] Figure 3 A flowchart for determining the time window for intraday corrections.

[0021] Figure 4 A flowchart generated for the intraday source load correction task. Detailed Implementation

[0022] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0025] Reference Figures 1-4 This is one embodiment of the present invention, which provides a source-load cooperative scheduling method based on day-ahead intraday correction, including the following steps: S1. Obtain source and load resources and distribution network data to form the basic data used for source and load scheduling.

[0026] Furthermore, the electrical boundaries of the source-load coordinated dispatch area are determined, and the ledger data of new energy resources, adjustable power resources, rigid loads, flexible loads, tie lines and distribution network equipment are read. Resource numbers are assigned to each source-load resource, distribution network node numbers are assigned to the bus and electrical connection points, and resource node connection relationships are established according to the actual electrical connection relationships.

[0027] Flexible loads include price-responsive flexible loads and command-responsive flexible loads. Price-responsive flexible loads change their electricity consumption periods according to time-of-use pricing and production plans, but do not receive real-time power commands within the day. Command-responsive flexible loads receive dispatch commands and change their electricity consumption within a specified response time.

[0028] Furthermore, the power, operating status, control status and regulation constraints of each source and load resource are obtained through the distribution network dispatch automation system, the new energy power station operation monitoring system, the load control terminal and the enterprise energy management system, and the production process status, planned electricity consumption, allowed electricity consumption period and electricity balance time of flexible loads are also obtained.

[0029] Specifically, new energy resources record actual output power, available power generation, power limitation status and power regulation rate; adjustable power resources record current output power, allowable power range, power change rate, start-stop status and continuous operation constraints; and command-response flexible loads record allowable increase in power consumption, allowable decrease in power consumption, power regulation step size, command response time, allowable duration of a single regulation and minimum interval between adjacent regulation actions.

[0030] It should be noted that the continuous confirmation duration is determined based on the data sampling period and the resource stability response time corresponding to the successful same-direction adjustment records executed within seven to thirty consecutive days prior to the current scheduling date, typically taking two to five consecutive sampling periods; the instruction response time is determined based on the successful same-direction adjustment records executed within seven to thirty consecutive days prior to the current scheduling date, taking the 95th percentile of the historical response time; the power adjustment step size prioritizes reading the power adjustment resolution configured in the load control terminal, and if no power adjustment resolution is configured, it takes the smallest actual power change that can be stably maintained within the continuous confirmation duration in the historical successful adjustment records.

[0031] Furthermore, the current switching power, allowable switching power range, power change rate and control status of the tie line are obtained, and the connection relationships, electrical parameters, operating limits and switch status of distribution network nodes, lines, transformers and switching equipment are obtained to generate the current distribution network topology.

[0032] Specifically, when recording the common connection point number in the source and load resource ledger, the energized bus corresponding to the common connection point is identified as the resource connection node. If the common connection point number is not recorded, the first energized bus is traced along the actual energized path according to the location of the access feeder, access transformer, metering point and the current switch status, and the first energized bus is identified as the resource connection node.

[0033] It should be noted that when the same source load resource is connected to the distribution network through multiple common connection points and each common connection point can be metered independently, source load resource records are formed separately. When each common connection point cannot be metered independently, the electrical boundary formed by multiple common connection points is defined as the aggregated source load resource. The power of the aggregated source load resource and the equipment inside the electrical boundary are not repeatedly included in the power balance of the distribution network.

[0034] Furthermore, the acquisition time of each data is converted to the clock of the scheduling master station. The latest data, which is no later than the data alignment time and within the valid time limit, is selected at the data alignment time. The validity is then verified based on the nominal data reporting cycle, communication arrival delay, maximum permissible error of the metering device, and permissible power change rate of the source and load resources.

[0035] It should be noted that the data validity period is the larger of twice the nominal reporting period and the 99th percentile of the communication arrival delay within seven to thirty consecutive days prior to the current scheduling date, and is limited to no more than five times the nominal reporting period; when the power change exceeds the allowable power change range, the corresponding power data will be written to the pending review status, and the corresponding source load resources will be written to the temporarily unadjustable status.

[0036] Furthermore, the resource availability status is determined based on the operating status, control status, data quality status, and production process status. Data that has passed time alignment and validity verification, along with the continuous confirmation duration, are combined into the basic data used for source-load scheduling and written into the source-load resource ledger version, distribution network topology version, data snapshot time, and data formation number.

[0037] The basic data used for source-load scheduling includes source-load resource basic records, source-load resource operation snapshots, flexible load production constraint records, distribution network model records, resource node connection records, and data quality records.

[0038] S2. Based on the basic data, historical errors, and time-of-use pricing used for source-load scheduling, determine the day-ahead benchmark power, the power boundary for balance correction, the boundary of flexible load power deviation, and the power balance cutoff period, and generate the day-ahead source-load coordinated scheduling plan.

[0039] Furthermore, the next day's scheduling cycle is divided into continuous day-ahead scheduling periods. Meteorological forecast data, new energy power forecast data, rigid load power forecast data, time-of-use electricity price tables, and the next day's production plans of high-energy-consuming enterprises are read to form the day-ahead scheduling input sequence for each source and load resource.

[0040] It should be noted that the day-ahead dispatch period is determined based on the power trading plan cycle, the allowable adjustment cycle of source and load resources, and the requirements of distribution network dispatch operation, and is usually taken as 15 minutes to one hour; the same day-ahead source and load coordinated dispatch plan adopts the same day-ahead dispatch period length.

[0041] Furthermore, historical predicted power and corresponding historical actual power are filtered according to the predicted object, prediction lead time, season type, and date type. The historical error is formed based on the difference between the historical actual power and the historical predicted power, and the range of predicted power for new energy and rigid load is determined based on the historical error.

[0042] Specifically, valid historical error records that meet the classification criteria within 30 to 180 consecutive days prior to the current scheduling date are selected. The sum of the current day's predicted power and the lower quantile of the historical error is determined as the lower limit of the predicted power, and the sum of the current day's predicted power and the upper quantile of the historical error is determined as the upper limit of the predicted power.

[0043] Furthermore, for each forecast lead time, the larger of the absolute values ​​of the difference between the upper limit of the new energy forecast power and the corresponding new energy forecast power, and the absolute values ​​of the difference between the corresponding new energy forecast power and the lower limit of the new energy forecast power, is determined as the new energy forecast error boundary. The larger of the absolute values ​​of the difference between the upper limit of the rigid load forecast power and the corresponding rigid load forecast power, and the absolute values ​​of the difference between the corresponding rigid load forecast power and the lower limit of the rigid load forecast power, is determined as the rigid load forecast error boundary. The new energy forecast error boundary and the rigid load forecast error boundary that are used in the calculation of the power gap for the corresponding intraday correction period are summed to obtain the forecast error reference boundary for the corresponding forecast lead time.

[0044] It should be noted that the lower quantile of historical error is usually taken as 2.5% to 10%, and the upper quantile of historical error is usually taken as 90% to 97.5%. The specific quantile is determined according to the proportion of predicted risk required to be covered by the distribution network dispatching regulations. When there are fewer than 30 valid historical error records, they are extended to the adjacent months and the same season of the previous year.

[0045] Furthermore, the electricity consumption period is adjusted based on the time-of-use pricing, the planned electricity consumption of price-responsive flexible loads, the permitted electricity consumption period, the permitted transfer power, the minimum continuous operating time, and the production task completion time to form the day-ahead electricity consumption arrangement for price-responsive flexible loads.

[0046] Specifically, while keeping the planned daily electricity consumption unchanged, the day-ahead scheduling periods that meet the minimum continuous operating time, allowable transfer power, and production task completion time among the allowable electricity consumption periods of price-responsive flexible loads are determined as candidate transfer periods. The candidate transfer periods are sorted from high to low according to the time-of-use price, and if the time-of-use prices are the same, they are sorted from low to high according to the predicted power of new energy sources, forming the order of transfer-out periods. The candidate transfer periods are sorted from low to high according to the time-of-use price, and if the time-of-use prices are the same, they are sorted from high to low according to the predicted power of new energy sources, forming the order of transfer-in periods. The allowable transfer power is transferred from the day-ahead scheduling period with the earlier transfer-out period to the day-ahead scheduling period with the earlier transfer-in period, and the allowable power of the line, the allowable load rate of the transformer, and the node voltage range are verified. If the verification fails, the corresponding transfer-in period is skipped and the next day-ahead scheduling period is checked according to the transfer-in period order.

[0047] Among them, the transfer record of price-responsive flexible load includes load resource number, transfer-out period, transfer-in period, transfer power and transfer electricity, and the sum of the transfer electricity in all transfer-in periods is equal to the sum of the transfer electricity in all transfer-out periods.

[0048] Furthermore, the day-ahead base load is formed by adding the price-responsive flexible load power and the rigid load forecast power to complete the day-ahead electricity consumption plan, and the day-ahead base power is determined based on the planned utilization power of new energy sources, the planned output power of adjustable power sources, the planned switching power of tie lines, and the planned electricity consumption power of command-response flexible loads.

[0049] It should be noted that the day-ahead reference power is determined according to the following formula: ; in, Indicates the first The day-ahead reference output power of each adjustable power source during the current day-ahead scheduling period. This indicates the adjustable power resource number. Indicates the number of adjustable power resources. This indicates the planned daytime utilization of renewable energy resources during the current daytime dispatch period. This indicates the day-ahead reference switching power of the tie line during the current day-ahead scheduling period. This represents the day-ahead baseline load formed by rigid loads and price-responsive flexible loads. Indicates the first The day-ahead base power consumption of a command-response flexible load during the current day-ahead dispatch period. Indicates the sequence number of the command-response flexible load. This indicates the number of command-response flexible loads.

[0050] It should be noted that when the tie line inputs power from the upper-level power grid to the source-load coordinated dispatch area, it takes a positive value, and when it outputs power to the upper-level power grid, it takes a negative value; the day-ahead reference power is solved using the existing mixed integer programming method, and satisfies the source-load power balance, resource power range, power change rate, start-stop status, flexible load production constraints, and distribution network operation limits.

[0051] Furthermore, the day-ahead baseline power reserves adjustment space that can increase or decrease the net power supply capacity of the system, and for each intraday adjustable resource and day-ahead scheduling period, the power boundary for balance correction is determined based on physical power margin, power change rate achievable power, control protocol and production status allowable adjustment power and network remaining carrying capacity.

[0052] It should be noted that the power boundary used for balance correction is determined according to the following formula: ; ; in, Indicates the first The positive power boundary used for balancing correction of a combination of resource time periods. Indicates the first The negative of a combination of resource time periods is used to balance the power boundary for correction. Indicates the resource time period combination sequence number. and These represent the physical power margins in the two adjustment directions, respectively. and These represent the achievable power at the rate of power change in the two adjustment directions, respectively. and These represent the power that can be adjusted according to the control protocol and the production status, respectively. and These represent the remaining network capacity of the resource connection nodes.

[0053] Specifically, the physical power margin of adjustable power resources is determined based on the maximum allowable output power, the minimum allowable output power, and the day-ahead reference output power. The physical power margin of command-response flexible loads is determined based on the allowable power range of production processes and the day-ahead reference power consumption. The physical power margin of tie lines is determined based on the allowable exchange power range and the day-ahead reference exchange power. For each day-ahead adjustable resource and day-ahead scheduling period, the distribution network operating state corresponding to the day-ahead reference power is used as the working point for power flow calculation. Within the positive and negative physical power margin range of the corresponding resource, the power change in the corresponding direction is increased step by step. After each increase in power change, power flow calculation is performed and the line operating limit, transformer operating limit, and node voltage range are checked. When the power flow calculation fails to converge for the first time or any distribution network operating quantity exceeds the corresponding operating limit, the power increase in the corresponding direction is stopped. The power change that passed the power flow calculation and did not exceed the operating limit is determined as the remaining network carrying capacity of the corresponding resource in the corresponding direction.

[0054] It should be noted that the single-level power increment of the command-response flexible load is taken as the corresponding power adjustment step size, and the single-level power increment of the adjustable power resources and tie lines is taken as the minimum power setting resolution configured by the corresponding control system. When no minimum power setting resolution is configured, the minimum power change that can form a stable actual power change is taken from the successful adjustment records in the same direction within 7 to 30 consecutive days before the current dispatch date. When the power change is increased for the first time and the power flow calculation fails to converge or the distribution network operation exceeds the limit, the remaining network carrying capacity in the corresponding direction is recorded as 0. If no power flow calculation fails to converge or the distribution network operation exceeds the limit before the physical power margin in the corresponding direction is reached, the physical power margin in the corresponding direction is determined as the remaining network carrying capacity.

[0055] Furthermore, based on the basic data used for source-load scheduling, the minimum effective power change of adjustable resources within each day is determined. For command-response flexible loads, the power adjustment step size is taken. For adjustable power resources and tie lines, the minimum power setting resolution configured by the corresponding control system is taken. If no corresponding power adjustment step size or minimum power setting resolution is configured, the minimum actual power change that can be stably maintained within the continuous confirmation period is taken from the successful adjustment records in the same direction within seven to thirty consecutive days before the current scheduling date. The minimum value of the minimum effective power change is taken from the adjustable resources within the day whose resource availability status is available, and determined as the minimum effective adjustment power of the source-load coordinated scheduling plan for the day.

[0056] Furthermore, the power balance cutoff period is determined based on the production task completion time of the instruction-response flexible load and the power recovery time in the demand response agreement, and the boundary of the flexible load power deviation is determined based on the allowable early use of power, the allowable delayed use of power, the remaining allowable power use period, and the power balance cutoff period.

[0057] Specifically, the earlier of the latest completion time of the production task and the power recovery time specified in the demand response agreement is determined as the power balance cutoff period. If the demand response agreement does not configure a power recovery time, the latest completion time of the production task is determined as the power balance cutoff period.

[0058] It should be noted that the cumulative power deviation of flexible loads is updated according to the following formula: ; in, Indicates as of the date The cumulative power deviation formed during each scheduling period This indicates the cumulative power deviation at the end of the previous scheduling period. Indicates the first Balance correction power for each scheduling period Indicates the duration of the scheduling period. This indicates the lower boundary of the flexible load power deviation. This indicates the upper boundary of the flexible load power deviation. This indicates the cumulative power deviation corresponding to the power balance cutoff period. Indicates the scheduling time period number. This indicates the sequence number of the power balance cutoff period.

[0059] Among them, a positive cumulative power deviation indicates that there is power to be replenished, and a negative cumulative power deviation indicates that there is power that has been used in advance. The upper boundary of the flexible load power deviation is the smaller of the allowable delayed power consumption and the maximum power that can be replenished before the power balance deadline. The lower boundary of the flexible load power deviation is the negative of the smaller of the allowable early power consumption and the maximum allowable reduction in power consumption.

[0060] Furthermore, based on the lower limit of the predicted power of new energy sources and the upper limit of the predicted power of rigid loads, a power shortage scenario is formed, and based on the upper limit of the predicted power of new energy sources and the lower limit of the predicted power of rigid loads, a new energy surplus scenario is formed. The day-ahead reference power, the power boundary used for balance correction, the boundary of the power deviation of flexible loads, the power balance cutoff period, and the distribution network operation limit are verified respectively.

[0061] Specifically, in scenarios of power shortage, the positive balance correction power can cover the power supply gap, and in scenarios of renewable energy surplus, the negative balance correction power can absorb the renewable energy surplus power. Furthermore, when the cumulative power deviation of each instruction-responsive flexible load recovers to zero during the power balance cutoff period, the corresponding day-ahead scheduling result is written into the executable state.

[0062] Furthermore, the day-ahead reference power, the power boundary used for balance correction, the boundary of flexible load power deviation, the power balance cutoff period, the day-ahead power consumption arrangement of price-responsive flexible loads, the predicted power range, the prediction error reference boundary, the minimum effective regulating power, the distribution network operation limit, and the data formation number are combined to generate the day-ahead source-load coordinated dispatch plan, and written into the day-ahead plan version and the plan effective time.

[0063] S3. Obtain intraday power, determine the power gap based on the previous day's baseline power and the execution status record of the previous day, lock in the unaffected period, and extend the intraday correction time window based on power deviation, ramp-up and continuous operation constraints.

[0064] Furthermore, the intraday power of new energy resources, adjustable power resources, rigid loads, command-response flexible loads, and tie lines is obtained according to the intraday correction cycle. Based on the correspondence between the day-ahead scheduling period and the intraday correction period, the actual power of the current period and the ultra-short-term predicted power of the subsequent unexecuted period are matched with the day-ahead reference power.

[0065] It should be noted that the intraday correction cycle is determined based on the source load resource control cycle and the ultra-short-term forecast update cycle, and is usually taken as five to thirty minutes; the current intraday correction period uses the actual power that has completed time alignment and validity verification, and the subsequent unexecuted period uses the latest ultra-short-term forecast power.

[0066] Furthermore, the system reads the actual corrected power, continuously executed source-load adjustment commands, occupied balance corrected power, resource availability status, and actual power deviation of flexible loads from the execution status record of the previous day, and includes the continuously executed actual corrected power in the corresponding daily correction period.

[0067] It should be noted that when the intraday correction is executed for the first time on the current scheduling day, the actual correction power and the occupied balance correction power are initialized to zero, the resource availability status in the basic data used for source-load scheduling is taken as the current resource availability status, and the actual power deviation of flexible load is initialized to the actual power deviation when the source-load coordinated scheduling plan takes effect a day earlier.

[0068] Furthermore, under the condition that the day-ahead reference power satisfies the source-load power balance and the actual corrected power that is continuously executed has been included in the corresponding intraday correction period, the power gap of the current intraday correction period relative to the day-ahead reference power is determined based on the intraday actual power consumption and the intraday actual power supply, and the expected power gap of the subsequent unexecuted period is determined according to the same relationship.

[0069] It should be noted that the power gap is determined according to the following formula: ; in, Indicates the first Power gap during the correction period within one day Indicates the first The sum of the power consumption of rigid loads and the power consumption of command-response flexible loads during the daily correction period. Indicates the first The sum of renewable energy available power, adjustable power output power, and net input power of the interconnection line during the daily correction period. This indicates the intraday correction period number.

[0070] Among them, the day-ahead reference power has already satisfied the source-load power balance. The actual daily power consumption and actual daily power supply in the formula are the power values ​​after including the actual corrected power continuously executed in the execution status record of the previous day. Therefore, the power gap represents the remaining power deviation of the current intraday correction period relative to the day-ahead reference power that has not yet been offset by the continuously executed source-load adjustment command. When the power gap is positive, it means that the net power supply capacity of the system needs to be increased. When the power gap is negative, it means that the net power supply capacity of the system needs to be reduced. When the new energy resources are in a power-limited state, the available power of the new energy during the day is used to calculate the power gap.

[0071] Furthermore, the permissible deviation value for each daily correction period is determined based on the upper limit of measurement error, the reference boundary of prediction error, and the minimum effective adjustment power.

[0072] It should be noted that the permissible deviation value is determined according to the following formula: ; in, Indicates the first Permissible deviation value for correction periods within a day. This indicates the upper limit of the overall measurement error involved in power balance calculations. This represents the reference boundary for the prediction error corresponding to the prediction lead time. This represents the minimum effective regulating power of available source load resources.

[0073] In addition, when the allowable deviation value is a non-negative power value, and the measurement error, the prediction error reference boundary corresponding to the prediction lead time, and the minimum effective regulating power of the available source load resources each have corresponding value ranges, the lower bound of the allowable deviation value is the largest value among the lower bounds of the three value ranges, and the upper bound of the allowable deviation value is the largest value among the upper bounds of the three value ranges. The value range of the measurement error is determined according to the accuracy class and range of the metering device involved in the power gap calculation. The value range of the prediction error reference boundary is determined according to the quantile value of the historical prediction error under the corresponding prediction lead time. The value range of the minimum effective regulating power is determined according to the power regulation step size of the current available source load resources and the minimum actual power change that can be stably maintained within the continuous confirmation period. No additional fixed value ranges that deviate from the measurement accuracy, prediction error, and resource regulation capabilities are set.

[0074] It should be noted that the upper limit of the comprehensive measurement error is determined based on the accuracy class and range of the metering device, and the reference boundary of the prediction error is read from the day-ahead source-load coordinated scheduling plan. When there are available source-load resources, the corresponding minimum effective power change is determined based on the power adjustment step size, minimum power setting resolution, or minimum actual power change that can be stably maintained within the continuous confirmation period of each available source-load resource, and the minimum value among them is taken as the current minimum effective adjustment power. When there are no available source-load resources, the minimum effective adjustment power recorded in the day-ahead source-load coordinated scheduling plan is read.

[0075] Furthermore, the periods when the absolute value of the power gap is greater than the allowable deviation value are determined as the initial affected periods, the periods that have been completed before the current time are locked as executed periods, and the subsequent periods when the absolute value of the power gap is not greater than the allowable deviation value are marked as candidate unaffected periods.

[0076] Specifically, the executed time period will no longer change the day-ahead baseline power and source-load resource adjustment results. Candidate unaffected time periods will be locked as unaffected time periods if they are not included in the intraday correction time window after the completion of power deviation, ramp-up and continuous operation constraint checks.

[0077] Furthermore, based on the actual power consumption deviation recorded in the execution status log of the previous day and the current actual power consumption, the actual power consumption deviation of each instruction-response flexible load is updated.

[0078] It should be noted that the actual power deviation is updated according to the following formula: in, Indicates the first The instruction-responsive flexible load as of the [number]th [date / period]. The actual electricity deviation at the end of the correction period within a day This indicates the actual electricity consumption deviation at the end of the correction period within the previous day. Indicates the first The first command-responsive flexible load in the Day-ahead base power consumption for the correction period within a day. This indicates the corresponding actual power consumption. Indicates the duration of the intraday correction period. Indicates the sequence number of the command-response type flexible load.

[0079] When the actual power consumption deviation is positive, it indicates that there is power consumption to be replenished; when the actual power consumption deviation is negative, it indicates that there is power consumption that has been used in advance; when the actual power consumption deviation is zero, it indicates that the actual cumulative power consumption is consistent with the cumulative power consumption of the day-ahead benchmark.

[0080] Furthermore, when there is an initial affected period, the initial range of the intraday correction time window is determined by the earliest and latest initial affected periods, and the power recovery period is determined based on the actual power deviation, and the power recovery period is included in the intraday correction time window; when there is no initial affected period, the actual power deviation and the continuously executed source-load adjustment instructions in the execution status record of the previous day are checked. When the actual power deviation is zero and there is no remaining hold period, power recovery period, or flexible load power recovery period corresponding to the continuously executed source-load adjustment instructions, the current intraday correction cycle is written to the no-correction state, and no intraday correction time window is generated; when the actual power deviation is not zero or there is a remaining hold period, power recovery period, or flexible load power recovery period corresponding to the continuously executed source-load adjustment instructions, the initial range of the intraday correction time window is established based on the earliest and latest periods among the power recovery period, remaining hold period, power recovery period, and flexible load power recovery period.

[0081] Specifically, when there is electricity to be replenished, the replenishable electricity is accumulated starting from the first period after the initial range of the intraday correction time window when the power consumption can be increased. When there is no initial range of the intraday correction time window, the replenishable electricity is accumulated starting from the earliest intraday correction period that has not yet been executed. When there is electricity that has been used in advance, the offsettable electricity is accumulated starting from the first period after the initial range of the intraday correction time window when the power consumption can be reduced. When there is no initial range of the intraday correction time window, the offsettable electricity is accumulated starting from the earliest intraday correction period that has not yet been executed, until the accumulated electricity covers the corresponding actual electricity deviation, and the period participating in the accumulation is included in the intraday correction time window.

[0082] It should be noted that the power recovery period is simultaneously limited by the boundary of the flexible load power deviation, the allowable power range of the production process, the minimum continuous operating time, and the power balance cutoff period; if the actual power deviation cannot be eliminated by the power balance cutoff period, the corresponding instruction-responsive flexible load will be written into the current intraday correction uncallable state.

[0083] Furthermore, the ramp-up period is determined based on the power change time required for the adjustable resources to reach the target power and recover to the day-ahead reference power within each day. The continuous operation constraint impact period is determined based on the minimum continuous operating time, the minimum continuous shutdown time, the allowable duration of a single adjustment, and the minimum interval between adjacent adjustment actions. The ramp-up period and the continuous operation constraint impact period are then included in the intraday correction time window.

[0084] Specifically, the ramp-up time is determined based on the power change amount and the corresponding power change rate in the direction, and rounded up to an integer multiple of the duration of the intraday correction period. When a candidate adjustment action causes a change in resource start-up / shutdown status or operating power, the period before the corresponding continuous operation constraint is met is included in the intraday correction time window.

[0085] It should be noted that the power change rate is read from the basic data used for source-load scheduling, and the typical ramp-up time is usually one to twelve intraday correction periods; the remaining hold-up period, power recovery period and flexible load power recovery period corresponding to the continuously executed source-load adjustment commands in the previous day's execution status record are all included in the intraday correction time window.

[0086] Furthermore, the initial affected period, power recovery period, ramp-up period, and continuous operation constraint-affected period are merged, and the constraint impact caused by the newly added period is repeatedly checked until the intraday correction time window no longer expands. Candidate unaffected periods outside the intraday correction time window are locked as unaffected periods.

[0087] The intraday correction time window record includes the start time of the intraday correction time window, the end time of the intraday correction time window, power gap, allowable deviation value, actual power deviation, power recovery period, ramp-up period, continuous operation constraint impact period, previous day execution status record number, and unaffected period lock status.

[0088] It should be noted that the starting point of the intraday correction time window is no earlier than the earliest intraday correction period that has not yet been implemented, and the ending point is no later than the end of the daytime source-load coordinated dispatch plan and the power balance cutoff period corresponding to the instruction response type flexible load participating in the regulation.

[0089] S4. Within the intraday correction time window, take the intersection of the power boundary used for balancing correction and the actual adjustable range, jointly allocate the correction power and form the expected flexible load power deviation trajectory. After network sensitivity screening and power flow verification, generate an intraday source load correction task containing primary and backup source load adjustment instructions and activation conditions.

[0090] Furthermore, the system reads the day-ahead baseline power, power boundary for balance correction, boundary of flexible load power deviation, power balance cutoff period and day-ahead plan version from the day-ahead source-load coordinated scheduling plan. It also reads the power gap, actual power deviation and unaffected period lock status from the intraday correction time window record, and reads the occupied balance correction power, continuously executed source-load adjustment instructions and resource availability status from the execution status record of the previous day.

[0091] Furthermore, based on the current power, allowable power range, power change rate, control interface status, production process status, and continuous operation constraints of the adjustable resources within each day, the actual adjustable range of the adjustable resources within each day is determined within the time window of the day's correction.

[0092] Specifically, adjustable power resources determine the actual adjustment margin based on the current output power and the allowable output power range; command-response flexible loads determine the power that can be increased or decreased based on the current power consumption and the allowable power range of the production process; tie lines determine the actual adjustment margin based on the current switching power and the allowable switching power range, and limit the amount of power change that can be achieved during a single day's correction period based on the power change rate.

[0093] It should be noted that when the control interface is closed, communication is offline, maintenance is underway, adjustment is prohibited during production processes, or data is invalid, the upper and lower boundaries of the actual adjustable range will both be set to zero; when continuous operation constraints limit a certain adjustment direction, the actual adjustable boundary of the corresponding direction will be set to zero.

[0094] Furthermore, the occupied balance correction power is subtracted from the power boundary used for balance correction, and the intersection of the subtraction result and the actual adjustable range is determined as the remaining balance correction power range.

[0095] It should be noted that the residual balance correction power range is determined according to the following formula: ; ; in, and They represent the first The available resources within the day are in the first The lower and upper boundaries of the residual balance correction power for each intraday correction period. and These represent the lower and upper boundaries of the balance correction power, respectively. This indicates that the balance correction power has been used. and These represent the lower and upper boundaries of the actual adjustable range, respectively.

[0096] It should be noted that when the lower boundary of the remaining balance correction power is greater than the upper boundary of the remaining balance correction power, the corresponding resource time period combination will be written into the unallocable state; when the current actual adjustable range is greater than the power boundary used for balance correction, the allocable power will still be limited by the power boundary used for balance correction; when the current actual adjustable range is smaller, the allocable power will be limited by the actual adjustable range.

[0097] Furthermore, resources whose remaining balance correction power range is not empty and whose resource availability status is available are identified as candidate intraday adjustable resources, and the correction power of each candidate intraday adjustable resource is jointly allocated within the intraday correction time window.

[0098] It should be noted that the corrected power is satisfied with the power balance of each correction period within the day according to the following formula: ; in, Indicates the first Within the candidate day, available resources are in the [number]th ...]. The correction power allocated during the correction period within a day. Indicates the number of resources available for adjustment within the candidate period. Indicates the first Power gap during the correction period within a day.

[0099] Specifically, the corrected power of the adjustable resource allocation within each candidate day is within the range of the corresponding remaining balance corrected power, and satisfies the power change rate, minimum continuous operating time, minimum continuous downtime, allowable duration of a single adjustment, minimum interval between adjacent adjustment actions, and the locked state of the unaffected period. The corrected power during the unaffected period remains zero.

[0100] It should be noted that the joint allocation of corrected power is solved using the existing mixed-integer linear programming method. The first solution objective is to minimize the uncovered power gap, and the second solution objective is to minimize the adjustment cost. Under the conditions of satisfying the power, energy, and operational constraints explicitly given in this embodiment, a set of corrected power allocation results is obtained. After obtaining a set of corrected power allocation results, exclusion constraints are generated based on the resource numbers of the corrected power that are not zero and the intraday correction period in the set of corrected power allocation results. This ensures that the next solution cannot output the same combination of resource periods as the corrected power allocation results already obtained. The solution, recording, and exclusion are repeated until there are no new feasible solutions, the upper limit of the number of candidate solutions configured by the scheduling system is reached, or the allowed duration for generating intraday correction tasks is reached, resulting in multiple sets of corrected power allocation results. The solver is only used to generate multiple sets of corrected power allocation results under the above constraints and objectives, and does not change the power boundary used for balancing correction and the intraday correction time window in the day-ahead source-load coordinated scheduling plan.

[0101] Furthermore, based on the corrected power allocated to each instruction-responsive flexible load and the current actual power deviation, a time-by-time trajectory for the expected flexible load power deviation is formed.

[0102] It should be noted that the expected deviation in flexible load power consumption will be updated according to the following formula: ; in, Indicates the first The instruction-responsive flexible load as of the [number]th [date / period]. The expected flexible load power deviation at the end of the daily correction period This indicates the expected flexible load power deviation at the end of the correction period within the previous day. Indicates the first The first command-responsive flexible load in the The correction power allocated during the correction period within a day. This indicates the duration of the intraday correction period.

[0103] Among them, when the power consumption of the command-response type flexible load decreases, the correction power is positive and the deviation of the expected flexible load power consumption increases; when the power consumption increases, the correction power is negative and the deviation of the expected flexible load power consumption decreases.

[0104] Furthermore, the expected flexible load power deviation trajectory is compared with the boundary of the flexible load power deviation on a time-by-time basis, and it is checked whether the expected flexible load power deviation returns to zero during the power balance cutoff period. Corrected power allocation results that cross the boundary of the flexible load power deviation or fail to return to zero during the power balance cutoff period are deleted.

[0105] Furthermore, based on the current distribution network topology and resource node connection relationships, the line active power, line current, line apparent power, transformer load rate, and node voltage before the disturbance are applied are used as the reference network quantities. Positive and negative disturbances are applied to the adjustable resources in each candidate day, and AC power flow calculations are performed. The difference between the network quantity after the disturbance and the reference network quantity is divided by the disturbance power to obtain the network sensitivity of the corresponding resource in the corresponding direction. Based on the reference network quantity, network sensitivity, and the power correction increment of each resource, the network quantity corresponding to the corrected power allocation result is estimated.

[0106] It should be noted that the disturbance power is taken as the power adjustment step size of the adjustable resources within the corresponding candidate day. When the power adjustment step size is greater than the width of the remaining balance correction power range, the width of the remaining balance correction power range is taken. When the power flow calculation does not converge, the corresponding resource time period combination is written into the network sensitivity unavailable state, and the correction power allocation result containing the resource time period combination is deleted in the network sensitivity screening stage.

[0107] Furthermore, delete any corrected power allocation result whose estimated network quantity exceeds the distribution network operating limit, and perform AC power flow verification on each of the retained results; when the AC power flow calculation converges and the line active power, line current, line apparent power, transformer load rate, node voltage and source-load power balance all meet the corresponding operating limits, write the corrected power allocation result into the network executable state; otherwise, delete the corresponding corrected power allocation result.

[0108] It should be noted that the line apparent power is determined based on the line active power and line reactive power calculated from the AC power flow, and the transformer load rate is the ratio of the transformer's actual apparent power to its rated capacity. When there is no network executable power allocation result after power constraint, energy constraint, network sensitivity screening and AC power flow verification, the corresponding intraday correction period is written to the state of no network executable scheme, the uncovered power gap is written to the state of non-eliminable deviation, the day-ahead reference power and the continuously executed source-load adjustment commands remain unchanged, and the corresponding state is written to the execution status data read in the next intraday correction cycle.

[0109] Furthermore, based on the power gap coverage, the expected flexible load power deviation margin, and the adjustment cost, the primary corrected power allocation result is determined from the network's executable corrected power allocation result.

[0110] Specifically, the results are first retained such that the remaining power gap in each correction period does not exceed the allowable deviation value, and then the results with the largest minimum distance between the expected flexible load power deviation trajectory and the corresponding boundary are retained. If there are still multiple results, the result with the lowest adjustment cost is determined as the main corrected power allocation result.

[0111] The adjustment costs include adjustable power resource adjustment costs, adjustable power resource start-up and shutdown costs, command-response flexible load compensation costs, and tie-line exchange deviation costs. Each cost is determined based on the corresponding corrected power volume, the number of start-up and shutdown actions, and the corresponding unit price. The unit price is read from the generation cost curve, dispatch settlement rules, resource quotation records, resource operation ledger, demand response agreement, user-side compensation rules, power trading plan, or tie-line settlement rules.

[0112] Furthermore, based on the primary power allocation result, primary source load adjustment instructions are generated. Each primary source load adjustment instruction records the resource number, resource connection node, execution period, target power, adjusted power, power change rate, allowable response time, and allowable execution deviation.

[0113] It should be noted that the allowable response time is determined by the sum of the command response time of the corresponding resource type and the 99th percentile of the communication arrival delay within seven to thirty consecutive days prior to the current scheduling date. The command response time for adjustable power resources, command-response flexible loads, and tie lines is the time from when the control interface receives the corresponding adjustment command to when the actual power first enters the target power allowable range. If there are fewer than seven historical records, the configuration response time is read from the resource operation ledger, grid connection protocol, or demand response protocol. The allowable execution deviation is the maximum value among the maximum allowable error of the metering device, the power adjustment step size or minimum power setting resolution of the corresponding resource, and the 95th percentile of the stable power deviation in the historical successful adjustment records. The stable power deviation is the maximum value among the absolute values ​​of the difference between the actual corrected power and the command corrected power at each sampling point within the continuous confirmation period after the actual corrected power enters the allowable range of the command corrected power.

[0114] Furthermore, for the incremental reserve compensation demand formed when the primary source load regulation command is unresponsive, the reserve corrected power allocation result is determined from the remaining network executable corrected power allocation result, and the power balance, flexible load power deviation and distribution network operation status are verified when the reserve corrected power allocation result is executed together with the non-failed primary source load regulation command.

[0115] The incremental reserve compensation demand is the remaining power demand formed after deducting the corrected power of the non-failed primary load regulation command from the power gap. Its time period is the execution period of the non-responsive primary load regulation command, and its direction is consistent with the direction of the remaining power demand. The upper limit of the demand is the absolute value of the remaining power demand.

[0116] In addition, the intraday adjustable resources in the same backup load adjustment instruction combination do not use the same control terminal as the corresponding failed primary load adjustment instruction. The backup load adjustment instruction records the resource number, execution period, target power, correction power and execution order determination rules. The execution order determination rules are used to form the current execution order based on the current remaining deviation, the availability status of backup resources, the current actual adjustable range and the allowed response time when the task is executed.

[0117] Furthermore, the activation conditions and execution order determination rules for the standby source load adjustment command are configured based on the allowable response time, actual correction power, allowable residual deviation value, and continuous confirmation duration. Among these, the actual correction power is a dynamic input during the task execution process and is not preset when generating intraday source load correction tasks.

[0118] Specifically, when the allowed response time for the primary source load regulation command expires, and the absolute value of the remaining deviation between the power deficit and the actual corrected power obtained is greater than the allowed value of the remaining deviation, and continues to reach the continuous confirmation duration, the activation condition of the corresponding standby source load regulation command is met.

[0119] It should be noted that the allowable value of the remaining deviation is the maximum value among the comprehensive measurement error, the allowable execution deviation of the non-responding primary source load adjustment command, and the minimum effective adjustment power of the standby source load adjustment command; the continuous confirmation duration is read from the basic data used for source load scheduling and remains unchanged in the source load correction task within the same day; the continuous confirmation duration in the basic data used for source load scheduling is pre-generated based on the data sampling period and the resource stability response time. The resource stability response time is determined based on the same-direction adjustment records of the same type of resource successfully executed within seven to thirty consecutive days before the current scheduling date. If there are fewer than seven historical records, the configured stability response time is read from the resource control equipment configuration, grid connection protocol, or demand response protocol.

[0120] Furthermore, the daily source load adjustment task is generated by combining the primary source load adjustment command, backup source load adjustment command, activation conditions, execution order determination rules, intraday correction time window, power gap, remaining balance correction power range, expected flexible load power deviation trajectory, network sensitivity screening results, power flow verification results, day-ahead plan version, distribution network topology version, basic data formation number used for source load scheduling, task effective time and task failure time.

[0121] It should be noted that the task takes effect no earlier than the start of the intraday correction time window, and the task expires no later than the end of the intraday correction time window; when the previous day plan version, distribution network topology version, or the basic data formation number used for source-load scheduling changes, the intraday source-load correction task will be written into the version inconsistency state.

[0122] S5. Execute the intraday source-load correction task, calculate the remaining deviation based on the actual correction power, activate the standby source-load adjustment command, and generate intraday execution status records and source-load collaborative scheduling execution results.

[0123] Furthermore, when the effective time of the intraday source-load correction task arrives, the intraday source-load correction task, the current daytime source-load coordinated scheduling plan version, the current distribution network topology version, and the basic data used for current source-load scheduling are read to form a number; if all three versions are consistent and the current time is within the task's effective time, the intraday source-load correction task is written to the "allow execution" state; otherwise, it is written to the "task failure" state, and the issuance of unexecuted primary source-load adjustment instructions and backup source-load adjustment instructions is stopped.

[0124] It should be noted that changes in the distribution network topology version include changes in switch on / off status, line out of operation, changes in transformer operation mode, and changes in resource connection nodes; once the intraday source-load correction task is written to the task failure status, the correction power will not be reallocated during the current execution process.

[0125] Furthermore, a pre-execution check is performed on the primary load regulation command in the allowed execution state. When the resource corresponding to the primary load regulation command is in an available state and there are no conflicting continuous execution commands, the primary load regulation command is written to the pending issuance state, and the target power and execution parameters are sent to the corresponding adjustable power control system, load control terminal or tie-line control interface.

[0126] Among them, the target power of adjustable power resources is the target value of output power, the target power of command-response flexible loads is the target value of power consumption, and the target power of tie lines is the target value of switching power.

[0127] Furthermore, when the control interface returns a successful reception status, the corresponding primary source load adjustment instruction is written to the received status; when the control interface fails to return a successful reception status within the communication confirmation time, returns a rejection status, or the resource status becomes unavailable before the instruction is executed, the corresponding primary source load adjustment instruction is written to the unreceived status.

[0128] It should be noted that the communication confirmation time is determined based on the allowable response time in the daily source load correction task and the data reporting cycle in the basic data used for source load scheduling, taking the smaller value between the allowable response time and a data reporting cycle.

[0129] Furthermore, starting from the beginning of the instruction period, the actual power of each resource corresponding to the received primary load adjustment instruction is obtained according to the data sampling period, and the actual corrected power is determined based on the execution baseline power of the resource before the instruction is applied and the actual power after the instruction is applied.

[0130] Specifically, the actual corrected power of the adjustable power resource is obtained by subtracting the execution reference output power from the actual output power of the adjustable power resource; the actual corrected power of the command-response flexible load is obtained by subtracting the execution reference power consumption from the actual power consumption; and the actual corrected power of the tie line is obtained by subtracting the execution reference net input power from the actual net input power of the tie line.

[0131] When the actual corrected power is positive, it means that the corresponding resource increases the net power supply capacity of the system; when the actual corrected power is negative, it means that the corresponding resource decreases the net power supply capacity of the system. The execution reference power includes the day-ahead reference power and the actual corrected power that is still in effect before the intraday source-load correction task is executed.

[0132] Furthermore, the actual corrected power is compared with the corrected power in the corresponding primary load regulation command, and the response status of the primary load regulation command is determined based on the allowable response time, allowable execution deviation, and continuous confirmation duration.

[0133] Specifically, if the actual corrected power enters the allowable execution deviation range of the corresponding command's corrected power before the allowable response time of the primary load adjustment command expires, and remains within the allowable execution deviation range for a continuous confirmation period, the primary load adjustment command will be written to the response completion status. If the actual corrected power still does not enter the allowable execution deviation range after the allowable response time expires, the primary load adjustment command will be written to the response insufficiency status. If the control interface is disconnected, the resource exits operation, or the data becomes invalid, the primary load adjustment command will be written to the response interruption status.

[0134] It should be noted that the allowed response time, allowed execution deviation, and continuous confirmation duration are directly read from the intraday source load correction task and are not changed during execution.

[0135] Furthermore, by subtracting the actual corrected power generated by the main source load adjustment commands from the original power gap during the intraday correction period, the remaining deviation after the execution of the main source load adjustment commands is calculated, expressed as: ; in, Indicates the first The remaining deviation within the correction period of the day, This indicates the first record of the intraday source load correction task. Power gap during the correction period within one day Indicates the first The executed primary load regulation command is in the... The actual correction power formed during the correction period within a day This indicates the number of primary source load adjustment commands that have been executed.

[0136] When the residual deviation is positive, it means that the actual corrected power has not fully made up for the power supply gap. When the residual deviation is negative, it means that the actual corrected power exceeds the power supply gap or has not fully absorbed the surplus power of new energy sources.

[0137] Furthermore, the absolute value of the remaining deviation is compared with the allowable value of the remaining deviation recorded in the intraday source load correction task. If the absolute value of the remaining deviation is not greater than the allowable value of the remaining deviation, the current intraday correction period is written to the correction completion status, and the standby source load adjustment command is kept in an inactive state.

[0138] Furthermore, when the absolute value of the remaining deviation is greater than the allowable value of the remaining deviation, the corresponding primary source load adjustment command is checked to see if it is in an unreceived state, an insufficient response state, or a response interruption state, according to the activation conditions of the standby source load adjustment command, and the remaining deviation is checked to see if it continuously reaches the corresponding continuous confirmation duration.

[0139] Specifically, when the corresponding primary source load adjustment command is in an unreceived state, an insufficient response state, or a response interruption state, the direction of the remaining deviation is consistent with the correction direction of the backup source load adjustment command, and the absolute value of the remaining deviation is continuously greater than the allowable value of the remaining deviation, the corresponding backup source load adjustment command is written into the state that meets the activation conditions.

[0140] Furthermore, from the standby load adjustment instructions that meet the activation conditions, check the operating status of standby resources, control interface status, production process status, actual adjustable range, and effective period of standby instructions. Filter out standby load adjustment instructions that are unavailable, whose correction direction is inconsistent with the current remaining deviation direction, or whose correction power exceeds the current actual adjustable range. Based on the execution order determination rules, form the current execution order for the retained standby load adjustment instructions, and select the standby load adjustment instruction that is currently executed first.

[0141] When forming the current execution order, standby load adjustment instructions whose absolute value of corrected power is not greater than the absolute value of the current remaining deviation are arranged first, and then arranged in descending order of absolute value of corrected power. The remaining standby load adjustment instructions are arranged in ascending order of the difference between the absolute value of corrected power and the absolute value of the current remaining deviation. If the sorting results are the same, the order is determined by the allowable response time from shortest to longest.

[0142] Specifically, if the backup resource is still available, the corrected power of the backup load adjustment command is within the current actual adjustable range of the backup resource, and the current time has not exceeded the command end time of the backup load adjustment command, the backup load adjustment command is written into the active state and sent to the corresponding control interface; if the backup resource is unavailable, the actual adjustable range is insufficient, or the current time has exceeded the command end time, the backup load adjustment command is written into the activation failure state, and the next backup load adjustment command is checked according to the execution order of the backup load adjustment commands.

[0143] It should be noted that when executing standby load adjustment commands, only standby load adjustment commands that have passed the expected flexible load power deviation verification, network sensitivity screening, and power flow verification in the intraday load correction task are activated. During the execution process, load resources not recorded in the intraday load correction task are not used to replace standby resources.

[0144] Furthermore, after the standby load regulation command is activated, the actual power of the standby resources is collected and the actual corrected power of the standby resources is calculated in the same way as the primary load regulation command. The actual corrected power of the primary load regulation command and the actual corrected power of the standby load regulation command are included in the remaining deviation, expressed as: ; in, Indicates the first The remaining deviation after activating the standby load adjustment command during the correction period within one day. Indicates the first The activated standby load adjustment command is in the... The actual correction power formed during the correction period within a day This indicates the number of standby load adjustment commands that have been activated.

[0145] Furthermore, after activating a standby load adjustment command, wait for the corresponding allowed response time and continuous confirmation duration, and recalculate the remaining deviation; if the absolute value of the remaining deviation is still greater than the allowed value of the remaining deviation and there are still standby load adjustment commands that meet the activation conditions, re-form the current execution order according to the execution order determination rules based on the updated remaining deviation and the current status of each standby resource, and activate the next standby load adjustment command that is currently executed first.

[0146] Furthermore, if, after all activatable standby load adjustment commands have been checked, the absolute value of the remaining deviation is still greater than the allowable value of the remaining deviation, the current intraday correction period will be written to the deviation not eliminated status, and the activation of standby load adjustment commands that do not meet the activation conditions of the intraday load correction task will be stopped.

[0147] Furthermore, during the execution of primary and backup load regulation commands, the active power of the line, line current, transformer load rate, and node voltage are continuously collected and compared with the distribution network operation limits in the basic data used for load dispatching.

[0148] Specifically, when the active power of the line, the line current, the transformer load rate, and the node voltage are all within the corresponding distribution network operating limits, the currently activated source load regulation commands are maintained. When any distribution network operating quantity exceeds the corresponding distribution network operating limit, the corresponding intraday correction period is written into the network operating limit over-limit status. First, the standby source load regulation commands that have not yet completed their response are stopped in reverse order of the most recent execution sequence of the standby source load regulation commands, and the distribution network operating quantity is re-collected. If the limit is still exceeded after re-collection, the activated source load regulation commands are reduced or revoked in sequence according to the order of standby source load regulation commands before primary source load regulation commands, and the later activated source load regulation commands before the earlier activated source load regulation commands. The distribution network operating quantity is re-collected after each reduction or revocation until the distribution network operating quantity is restored to within the corresponding distribution network operating limit. If the limit is still exceeded after there are no more activated source load regulation commands that can be reduced or revoked, the corresponding intraday correction period is written into the network abnormal status, the activation of standby source load regulation commands is stopped, and the network abnormal status is written into the execution status data read in the next intraday correction cycle.

[0149] It should be noted that the power distribution network operation checks during the execution period use the actual measured values ​​of the dispatch automation system or the estimated values ​​of the power distribution network status, and do not reallocate and correct the power based on network sensitivity.

[0150] Furthermore, based on the actual power consumption of the command-response flexible load, the deviation of the actual power consumption of the flexible load during the daily time period is corrected and updated as follows: ; in, Indicates the first The instruction-responsive flexible load as of the [number]th [date / period]. The deviation of actual flexible load power at the end of the correction period within a day. This indicates the deviation of the actual power consumption of flexible load at the end of the correction period within the previous day. Indicates the first The first command-responsive flexible load in the Day-ahead base power consumption for the correction period within a day. Indicates the first The first command-responsive flexible load in the The actual power consumption during the corrected period within a day This indicates the duration of the intraday correction period.

[0151] When the actual power deviation of the flexible load is positive, it indicates that there is power to be replenished; when the actual power deviation of the flexible load is negative, it indicates that there is power that has been used in advance. When the actual power deviation of the flexible load exceeds the boundary of the corresponding flexible load power deviation, the corresponding instruction response type flexible load is written into the power boundary over-limit state, and the source load adjustment instruction that increases the power deviation in the same direction and has not yet started execution is stopped.

[0152] Furthermore, at the end of each daily correction period, the issuance status, reception status, activation status, response status, actual corrected power, remaining deviation, actual power deviation of flexible loads, resource availability status, and distribution network operation status of the primary source load adjustment command and the standby source load adjustment command are summarized to generate a daily execution status record.

[0153] The daily execution status record includes the daily source load correction task number, the daily correction period, the executed primary source load adjustment command number, the activated standby source load adjustment command number, the actual power of each source load resource, the actual corrected power of each source load resource, the remaining deviation, the actual power deviation of flexible loads, the continuously executed source load adjustment commands, the occupied balance correction power, the unavailable resource number, the command abnormal status, and the distribution network operation status.

[0154] Furthermore, the intraday execution status records of each intraday correction period within the intraday correction time window are summarized, the actual corrected power of each source load resource is calculated based on the actual corrected power and the duration of the intraday correction period, the maximum remaining deviation and the period during which the deviation has not been eliminated are determined based on the remaining deviation of each intraday correction period, and the number of primary source load adjustment instructions completed, the number of standby source load adjustment instructions activated, and the number of instructions execution anomalies are determined based on the instruction execution status.

[0155] Furthermore, the daily source-load correction task number, day-ahead plan version, distribution network topology version, daily correction time window, actual correction power of each source-load resource, actual correction electricity of each source-load resource, actual electricity deviation trajectory of flexible load, maximum remaining deviation, period of deviation not eliminated, execution result of primary source-load adjustment command, activation result of standby source-load adjustment command, and distribution network operation status are combined to generate source-load collaborative scheduling execution result.

[0156] In summary, this invention determines the power gap by comparing intraday power with the day-ahead reference power, and determines the allowable deviation value based on measurement error, prediction error reference boundary, and minimum effective adjustment power. This enables the identification of the initial affected period requiring intraday correction, avoiding unnecessary source load adjustments directly triggered by normal measurement fluctuations or prediction deviations. By calculating the actual corrected power and remaining deviation based on the actual power of source load resources, and activating the backup source load adjustment command when the remaining deviation exceeds the allowable value and the primary source load adjustment command is in an unreceived state, an insufficient response state, or a response interruption state, this invention achieves continuous linkage between the backup source load adjustment command, the actual resource response state, and the unresolved power deviation.

[0157] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A source-load collaborative scheduling method based on day-ahead and intraday correction, characterized in that, include: Acquire source and load resources and distribution network data to form the basic data used for source and load scheduling; Based on the basic data, historical errors, and time-of-use pricing used in source-load dispatching, the day-ahead benchmark power, the power boundary for balance correction, the boundary for flexible load power deviation, and the power balance cutoff period are determined, and a day-ahead source-load coordinated dispatching plan is generated. Obtain intraday power, determine the power gap based on the previous day's baseline power and the execution status record of the previous day, lock in the unaffected period, and extend the intraday correction time window based on power deviation, ramp-up and continuous operation constraints; Within the intraday correction time window, the intersection of the power boundary used for balancing correction and the actual adjustable range is taken, the correction power is jointly allocated and the expected flexible load power deviation trajectory is formed. After network sensitivity screening and power flow verification, an intraday source load correction task containing primary and backup source load adjustment instructions and activation conditions is generated. Execute intraday source-load correction tasks, calculate the remaining deviation based on the actual correction power, activate the standby source-load adjustment command, and generate intraday execution status records and source-load collaborative scheduling execution results.

2. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 1, characterized in that, The acquisition of source-load resources and distribution network data to form the basic data used for source-load scheduling includes: Determine the source-load coordinated dispatch area, acquire new energy resources, adjustable power resources, rigid loads, price-responsive flexible loads, command-responsive flexible loads and tie lines, and configure resource numbers; The system acquires the power, operating status, control status, and regulation constraints of each source load resource, and also acquires the production process status, planned power consumption, allowed power consumption periods, and power balance time of flexible loads. Obtain the connection relationships, electrical parameters, operating limits, and switch status of distribution network equipment, and generate the current distribution network topology; Establish resource node associations based on resource access locations and the current distribution network topology, and perform time alignment and validity verification on the acquired data; The data that passes the validity check will be combined into the basic data used for source-load scheduling.

3. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 1, characterized in that, The determination of the day-ahead reference power and the power boundary for balance correction based on the basic data used in source-load scheduling, historical errors, and time-of-use pricing includes: Historical forecast errors were filtered by forecast object, forecast lead time, season type and date type to determine the forecast power range of new energy and rigid load. The day-ahead baseline load is formed by adjusting the electricity consumption period based on the electricity consumption constraints of time-of-use pricing and price-responsive flexible loads. The day-ahead reference power is determined based on the day-ahead reference load, the planned utilization power of new energy sources, the planned output power of adjustable power sources, the planned power consumption of command-response flexible loads, and the planned switching power of tie lines. Based on the physical power margin of each day's adjustable resources, the ramp-up achievable power, the adjustable power allowed by operational constraints, and the remaining network capacity, the power boundary for balancing correction is determined.

4. The source-load coordinated scheduling method based on day-ahead and intraday correction as described in claim 2 or 3, characterized in that, The process of determining the day-ahead reference power, the power boundary for balancing correction, the boundary for flexible load power deviation, and the power balancing cutoff period, and generating the day-ahead source-load coordinated scheduling plan also includes: The power balance cutoff period is determined based on the production task completion time and the power recovery time in the demand response agreement for command-response flexible loads. The boundaries of flexible load power deviation are determined based on the allowable early use of electricity, the allowable delayed use of electricity, the remaining allowable electricity use period, and the electricity balance cutoff period. A power shortage scenario is formed based on the lower limit of the predicted power of new energy sources and the upper limit of the predicted power of rigid loads; a power surplus scenario is formed based on the upper limit of the predicted power of new energy sources and the lower limit of the predicted power of rigid loads. In scenarios of power shortage and renewable energy surplus, the day-ahead reference power, the power boundary for balance correction, the boundary of flexible load power deviation, and the distribution network operation limit are verified to generate a day-ahead source-load coordinated dispatch plan.

5. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 4, characterized in that, The process of obtaining intraday power, determining the power gap based on the previous day's baseline power and the execution status record of the previous day, and locking in unaffected periods includes: Based on the correspondence between the day-ahead scheduling period and the intraday correction period, obtain the actual intraday power for the current period and the predicted intraday power for subsequent unexecuted periods; Read the actual corrected power, continuously executed source-load adjustment commands, actual power deviation, occupied balance corrected power and resource availability status from the execution status record of the previous day; The actual power corrections that are continuously implemented are included in the corresponding intraday correction period, and the power gap is determined based on the intraday power and the previous day's baseline power. Based on the measurement error, prediction error reference boundary and minimum effective adjustment power, determine the permissible deviation value for each daily correction period; The period in which the absolute value of the power deficit is greater than the allowable deviation value is determined as the initial affected period, the period in which the execution has been completed is locked as the executed period, and the candidate unaffected period is marked.

6. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 5, characterized in that, The time window for extending intraday correction based on power deviation, ramp-up, and continuous operation constraints includes: The initial range of the intraday correction time window is determined based on the earliest and latest initial affected time periods; The power recovery period is determined based on the boundaries of actual power deviation, flexible load power deviation, and power balance cutoff time, and the power recovery period is included in the intraday correction time window; Based on the power change time required for each day's adjustable resources to reach the target power and recover to the previous day's baseline power, the ramp-up period is determined and included in the time window for intraday correction. Based on the minimum continuous operating time, the minimum continuous shutdown time, the allowable duration of a single adjustment, and the minimum interval between adjacent adjustment actions, the period of continuous operating constraint impact is determined and included in the time window for intraday correction. Merge all included time periods and repeatedly check the impact of new constraints until the intraday correction time window no longer expands, and lock the candidate unaffected time periods outside the intraday correction time window as unaffected time periods.

7. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 1, characterized in that, Within the intraday correction time window, the intersection of the power boundary used for balancing correction and the actual adjustable range is taken, and the correction power is jointly allocated to form the expected flexible load power deviation trajectory. This trajectory is then filtered by network sensitivity and verified by power flow. Read the power boundary for balance correction and the power gap within the time window of intraday correction in the source-load coordinated scheduling plan of the day, and read the occupied balance correction power and resource availability status in the execution status record of the previous day; The actual adjustable range is determined based on the current power, allowable power range, power change rate, control interface status, and operating constraints of each adjustable resource within a day. The remaining balance correction power range is determined by subtracting the occupied balance correction power from the power boundary used for balance correction and the intersection of the subtraction result and the actual adjustable range. Within the remaining balance correction power range, the correction power is jointly allocated to match the corresponding power gap and to satisfy the ramping constraint, continuous operation constraint and the locked state during unaffected periods. The predicted flexible load power deviation trajectory is formed based on the corrected power allocated to the command-response flexible load, and the allocation results that do not meet the boundary of flexible load power deviation and the power balance cutoff period requirements are screened out. The retained allocation results are screened for network sensitivity and verified for power flow to determine the network's ability to perform corrective power allocation.

8. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 7, characterized in that, The intraday load correction task, which generates primary and backup load adjustment commands and activation conditions, includes: Based on the power gap coverage, flexible load power deviation margin, and adjustment costs, the primary corrected power allocation result is determined from the network executable corrected power allocation result; Generate a primary source load adjustment command based on the primary corrected power allocation result, including resource number, execution period, target power, corrected power, allowable response time, and allowable execution deviation; In the event of an unresponsive primary source load adjustment command, the backup corrected power allocation result is determined from the remaining network executable corrected power allocation results; Verify the power balance, flexible load power deviation, and distribution network operation status when the standby corrected power allocation result and the non-failed primary source load regulation command are executed together, and generate standby source load regulation command; Configure the activation conditions and execution order of the standby load regulation command based on the allowable response time, actual corrected power, allowable residual deviation, and continuous confirmation duration; Combine the primary source load adjustment command, the backup source load adjustment command, the activation conditions, and the corresponding verification results to generate the intraday source load correction task.

9. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 1, characterized in that, The execution of the intraday source load correction task, which involves calculating the remaining deviation based on the actual correction power and activating the standby source load adjustment command, includes: Verify the day-ahead plan version, distribution network topology version, basic data generation number used for source and load scheduling, and the effective time period of the task for the intraday source and load correction task to determine the task execution status; Read the operating status and control interface status of the resource corresponding to the primary load adjustment command, issue the primary load adjustment command and obtain the command reception status and the actual power of the resource; The actual corrected power generated by the main source load adjustment command is determined based on the execution reference power and the actual power of the resources, and the response status is determined based on the allowable response time and allowable execution deviation. Subtract the actual corrected power generated by the main source load regulation command from the power deficit to obtain the remaining deviation; If the remaining deviation exceeds the allowable value of the remaining deviation, and the primary source load regulation command is in any of the following states: not received, insufficient response, or interrupted response, check the activation conditions of the standby source load regulation command and the availability status of the standby resources. Activate the standby load regulation command that meets the conditions, and include the actual corrected power generated by the standby load regulation command in the residual deviation until the residual deviation does not exceed the residual deviation allowable value. Activation stops when there is no standby load regulation command that can be activated.

10. The source-load cooperative scheduling method based on day-ahead and intraday correction as described in claim 9, characterized in that, The generation of intraday execution status records and source-load collaborative scheduling execution results includes: Based on the day-ahead reference power consumption and actual power consumption of the command-response flexible load, update the actual power consumption deviation of the flexible load and determine the power consumption boundary state of the flexible load. Collect the active power of the lines, transformer load rate and node voltage during the execution of source-load regulation commands to determine the operating status of the distribution network; The execution status of source-load adjustment commands, actual corrected power, remaining deviation, actual power deviation of flexible loads, resource availability status, and distribution network operation status are summarized to generate a daily execution status record. Based on the intraday execution status record, determine the continuously executed source load adjustment commands, occupied balance correction power, unavailable resources, and periods when deviations have not been eliminated, and generate the execution status data to be read in the next intraday correction cycle; The actual corrected power, actual corrected electricity, actual electricity deviation trajectory of flexible load, remaining deviation, execution results of source-load adjustment commands, and distribution network operation status within the daily correction time window are summarized to generate the source-load coordinated dispatch execution results.

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