Method for analyzing the adjustable potential of an industrial load
Patent Information
- Application Number
- CN202611210720.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-11
- Publication Date
- 2026-09-11
Smart Images
Figure CN122736106A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power system demand response and load management technology, and in particular to a method for analyzing the adjustability potential of industrial loads. Background Technology
[0002] To implement and support technological innovation and industrial application of electricity demand-side management, improve the efficiency and effectiveness of industrial electricity utilization, and promote the balanced and coordinated development of industry, electricity, and the environment, electricity demand-side management has become a key component of the construction of new power systems.
[0003] In recent years, with the advancement of the electricity substitution strategy and the frequent occurrence of extreme weather events, the electricity load side has exhibited significant randomness and uncertainty. Peak loads on the power grid are concentrated within a few hundred hours during the summer, and the peak-to-valley difference continues to widen, posing a severe challenge to the grid's supply-demand balance. On the one hand, seasonal peak load contradictions are prominent; if addressed by investing in and constructing peak-shaving power plants with very low annual utilization hours, it would result in a significant waste of social resources. On the other hand, the randomness and intermittency of clean energy output such as wind and solar power lead to increasing pressure on grid peak-shaving and frequency regulation year by year, urgently requiring load-side resources to participate in regulation. Simultaneously, with the advancement of the new electricity market construction, traditional administrative measures such as orderly electricity consumption are no longer adequate to adapt to the new trends in electricity market development, necessitating innovative and differentiated incentive mechanisms to mobilize demand response resources to actively participate in grid interaction.
[0004] Industrial load accounts for over 68% of my country's total electricity consumption, making it the mainstay of the power system. Industrial loads are characterized by high energy consumption, strong cyclicality, and large scale, providing a feasible option for utilizing them as a flexible adjustment resource for the power grid. However, industrial loads differ from residential or commercial loads; their operation closely follows production targets, and there is strong coupling and sequential correlation between loads. A change in one load can affect the entire process flow. Therefore, scientifically and accurately assessing the adjustability potential of industrial loads is a crucial foundation for implementing demand response and constructing a new type of power system.
[0005] Currently, there are some studies on load adjustability potential assessment both domestically and internationally, but they mainly have the following shortcomings:
[0006] (1) The evaluation indicators are singular, mostly focusing only on interruptible capacity, while ignoring dynamic characteristics such as interruptible duration, interruption response rate, and recovery rate after interruption. They also fail to consider transferability potential and production efficiency factors at the same time, resulting in the evaluation results failing to fully reflect the real ability of industrial users to participate in demand response in different scenarios.
[0007] (2) When obtaining interruptible capacity, existing methods usually adopt the method of simply summing the results after testing each device individually, without considering the capacity superposition and attenuation effect caused by electrical coupling between multiple interruptible devices due to shared power supply lines or process coupling of shared process systems. This results in a significant overestimation of the actual interruptible capacity. This problem is particularly prominent under the actual operation conditions of multiple devices, but existing technologies lack effective correction methods. Summary of the Invention
[0008] Therefore, the purpose of this invention is to solve the technical problems of incomplete assessment of industrial load adjustability potential and overestimation of actual interruptible capacity caused by the single evaluation index and the neglect of the superimposed attenuation effect caused by electrical coupling and process coupling between multiple devices when obtaining interruptible capacity in interruptible potential. To this end, an analytical method for industrial load adjustability potential is proposed. By constructing a three-dimensional evaluation system that includes interruptible potential, transferable potential, and production indicators that consider attenuation effects, the accuracy of industrial load adjustability potential assessment can be improved.
[0009] To address the aforementioned technical problems, this invention provides a method for analyzing the adjustability potential of industrial loads, comprising:
[0010] The indicator parameters are determined based on the load characteristics of the target industrial users' effective working days; wherein, the effective working days have peak periods and trough periods; the indicator parameters include interruptibility potential, transferability potential and production indicators considering attenuation effects;
[0011] By integrating the interruptibility potential, transferability potential, and production indicators, a comprehensive potential score for the target industrial user is calculated.
[0012] Based on the comprehensive potential score, the target industrial user is determined to be a high-potential user, a medium-potential user, or a low-potential user.
[0013] Preferably, the interruptibility potential includes interruptibility capacity, interruptibility duration, interruption response rate, and post-interruption recovery rate;
[0014] The interruptible capacity is determined based on a comprehensive attenuation factor and the difference between the average power of the interruptible device during operation and the average power during standby; wherein, the comprehensive attenuation factor is determined based on the difference between the first capacity of the interruptible device when interrupted individually and the second capacity when interrupted in pairs.
[0015] The interruptible duration is determined based on the minimum value between the interruption duration agreed upon in the demand response agreement and the maximum interruption duration allowed by the equipment technical manual.
[0016] The interrupt response rate is the average rate of decrease of the active power on the incoming side of the interruptible device during the period when the active power on the incoming side of the interruptible device first drops from the baseline power to the standby power after receiving an interrupt command.
[0017] The recovery rate after interruption is the average rate of increase of the active power on the incoming side of the interruptible device during the period when the active power on the incoming side of the interruptible device first rises from the standby power to the baseline power after receiving the recovery command.
[0018] Preferably, the method for determining the interruptible capacity includes:
[0019] Perform a first interruption test on each interruptible device on the production line, record the first capacity during the first interruption test, and sort the interruptible devices in descending order of the first capacity. Select the top m interruptible devices as the test set; where m > 3.
[0020] The interruptible devices in the set to be tested are paired up, and a second interrupt test is performed on the paired interruptible devices. The second capacity during the second interrupt test is recorded.
[0021] The attenuation coefficient is calculated based on the first and second capacities of the interruptible devices in each pair of groups, and the comprehensive attenuation factor is calculated based on each attenuation coefficient; wherein, the attenuation coefficient is ≥0.7.
[0022] The first capacity is corrected using the comprehensive attenuation factor, and the interruptible capacity is determined based on the corrected first capacity.
[0023] The first interrupt test includes, while the interruptible device is running, taking the current active power on the incoming side of the interruptible device as a first baseline power; issuing an interrupt command to the interruptible device; when the active power on the incoming side of the interruptible device drops to the standby power, taking the current active power on the incoming side of the interruptible device as a first power; and taking the difference between the first baseline power and the first power as the first capacity of the interruptible device.
[0024] The second interrupt test includes: when two interruptible devices are running in pairs, the current active power of the total incoming line side of the two interruptible devices is used as the second baseline power; an interrupt command is issued to the two interruptible devices at the same time; when the active power of the incoming line side of the two interruptible devices drops to the corresponding standby power, the current active power of the total incoming line side of the two interruptible devices is used as the second power; and the difference between the second baseline power and the second power is used as the second capacity.
[0025] Preferably, the method for determining the interruptible capacity further includes:
[0026] The sum of the corrected first capacities of each interruptible device in the set to be tested is taken as the first interruptible capacity;
[0027] The second interruptible capacity is n times the average of the maximum power of all effective working days; where 0 < n < 1.
[0028] The minimum value between the first interruptible capacity and the second interruptible capacity shall be taken as the interruptible capacity.
[0029] Preferably, the transferability potential includes transferable capacity, transferable duration, and peak-hour electricity consumption percentage;
[0030] The transferable capacity is determined based on the average power during peak hours, the average power during the day, and the average power during off-peak hours of the effective working days; wherein, both peak hours and off-peak hours include at least 2 sampling points;
[0031] The transferable duration is determined based on the time difference between the end time of the peak period and the start time of the peak period.
[0032] The peak-hour electricity consumption ratio is determined based on the ratio of total electricity consumption during peak hours to total electricity consumption for the entire effective working day.
[0033] Preferably, the method for determining the transferable capacity includes:
[0034] The difference between the average power during peak hours on an effective working day and the average daily power is taken as the first transferable capacity.
[0035] The difference between the average daily power on effective working days and the average power during off-peak hours is used as the second transferable capacity.
[0036] The minimum value between the first transferable capacity and the second transferable capacity is used as the initial transferable capacity;
[0037] The average of the initial transferable capacity for all valid working days is taken as the transferable capacity.
[0038] Preferably, when a valid workday includes multiple peak periods and / or multiple off-peak periods:
[0039] The first transferable capacity is the maximum value among the differences between the average power during each peak period and the daily average power;
[0040] The second transferable capacity is the maximum value among the differences between the daily average power of the effective working days and the average power of each off-peak period.
[0041] Preferably, the production indicators are determined based on the ratio of total annual electricity consumption to total annual output;
[0042] The total annual output is equal to the ratio of the total annual output value to the unit price of the product.
[0043] Preferably, the method for calculating the comprehensive potential score includes:
[0044] Obtain reference indicator parameters for multiple sample users similar to the target industrial user; wherein, the reference indicator parameters include the sample users' interruptibility potential, transferability potential, and production indicators;
[0045] Based on the reference indicator parameters of multiple sample users, determine the reference range for each parameter of the indicator;
[0046] Based on the indicator parameters and the corresponding reference interval values, each parameter of the indicator parameters is standardized;
[0047] The weighted summation and standardization of the various indicator parameters yields the comprehensive potential score for the target industrial user.
[0048] Preferably, determining whether the target industrial user is a high-potential user, a medium-potential user, or a low-potential user based on the comprehensive potential score includes:
[0049] When the comprehensive potential score is greater than or equal to the first threshold, the target industrial user is a high-potential user;
[0050] When the potential comprehensive score is less than the first threshold but greater than the second threshold, the target industrial user is a medium-potential user.
[0051] When the overall potential score is less than or equal to the second threshold, the target industrial user is a low-potential user;
[0052] Where 0 < second threshold < first threshold < 1.
[0053] Compared with the prior art, the above-described technical solution of the present invention has the following advantages:
[0054] The method for analyzing the industrial load adjustability potential described in this invention constructs a three-dimensional evaluation system that includes interruptibility potential, transferability potential, and production indicators that take into account attenuation effects. It also limits the extraction of indicators to only valid working days with peak and off-peak periods, thereby solving the problem of a single evaluation indicator for industrial load adjustability potential. At the same time, it avoids the situation where the interruptibility capacity in the interruptibility potential is overestimated due to equipment coupling, leading to incorrect evaluation results. Attached Figure Description
[0055] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0056] Figure 1 This is a flowchart illustrating a method for analyzing the adjustable potential of industrial load in an embodiment of the present invention.
[0057] Figure 2 This is a schematic diagram of a three-dimensional evaluation system in an embodiment of the present invention. Detailed Implementation
[0058] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.
[0059] Example 1: This example discloses an analytical method for the adjustable potential of industrial load.
[0060] refer to Figure 1 The method for analyzing the industrial load adjustment potential in this embodiment includes steps SS1 to SS3.
[0061] Step SS1: Determine the index parameters based on the load characteristics of the target industrial users' effective working days.
[0062] When applying this technology, users in industries such as steel, electrolytic aluminum, cement, coal chemical, machinery manufacturing, and non-ferrous metal processing are targeted as industrial users.
[0063] Load characteristics may include: daily average power, maximum power, and minimum power. Furthermore, load characteristics may also include: daily peak hour information and daily off-peak hour information. Even further, load characteristics may include: upstream material inventory hours and downstream product inventory hours. Still further, load characteristics may include: total electricity consumption during peak hours on effective working days, total electricity consumption for the entire effective working day, and total annual electricity consumption.
[0064] During peak hours, the power timing data is consistently higher than 1.2 times the daily average power. Peak hour information includes the start and end times of the peak hour and the average power during the peak hour. During off-peak hours, the power timing data is consistently lower than 0.8 times the daily average power. Off-peak hour information includes the start and end times of the off-peak hour and the average power during the off-peak hour. Upstream material inventory hours are calculated by dividing the current material inventory by the hourly consumption during normal production; downstream product inventory hours are calculated by dividing the finished product inventory by the normal hourly shipment volume.
[0065] In practical applications, a valid workday must have both a peak period and a trough period. That is, a workday must include at least one peak period and one trough period to be considered a valid workday. Furthermore, both the peak and trough periods of a valid workday must include at least two sampling points. The sampling period can be determined based on the type of equipment, for example, 15 minutes or 1 minute.
[0066] In actual implementation, refer to Figure 2 The parameters include interruptibility potential, transferability potential, and production indicators, taking into account attenuation effects. Further, interruptibility potential includes interruptibility capacity, interruptibility duration, interruption response rate, and recovery rate after interruption. Transferability potential includes transferability capacity, transferability duration, and peak-hour electricity consumption percentage.
[0067] In some embodiments, the interruptible capacity is determined based on a combined attenuation factor and the difference between the average power of the interruptible device during operation and the average power during standby.
[0068] In application, interruptible equipment may include auxiliary production equipment and / or intermittent main equipment. Auxiliary production equipment may include: fans, dust collectors, circulating water pumps, air compressors, and / or conveyor belts. Intermittent main equipment may include crushers, mills, and / or parts of heat treatment equipment.
[0069] In practical applications, the comprehensive attenuation factor is determined based on the difference between the first capacity of an interruptible device interrupted individually and the second capacity of a device interrupted in pairs.
[0070] In actual implementation, the method for determining the interruptible capacity includes steps SS111 to SS114.
[0071] Step SS111: Perform a first interruption test on each interruptible device on the production line, record the first capacity during the first interruption test, and sort the interruptible devices in descending order of the first capacity. Select the top m interruptible devices as the test set.
[0072] In practice, the production line is a dedicated line for a single product. That is, a single production line produces only one main product, and the electricity consumption of the production line can be measured separately.
[0073] In practical applications, the first interruption test includes: when the interruptible device is running, taking the current active power on the incoming side of the interruptible device as a first baseline power; issuing an interrupt command to the interruptible device; when the active power on the incoming side of the interruptible device drops to the standby power, taking the current active power on the incoming side of the interruptible device as a first power; and taking the difference between the first baseline power and the first power as the first capacity of the interruptible device. Further, the first capacity = first baseline power - first power.
[0074] Specifically, the first interruption test includes continuously collecting the first active power on the input side of the interruptible device when the interruptible device is running and the active power fluctuation on the input side of the interruptible device is less than or equal to the fluctuation threshold, and taking the average value of the first active power as the first baseline power; issuing an interruption command to the interruptible device; and after the active power on the input side of the interruptible device drops to the standby power of the interruptible device and remains there for 5 seconds, continuously collecting the second active power on the input side of the interruptible device, and taking the average value of the second active power as the first power.
[0075] Wherein, the standby power of the interruptible device is less than or equal to 10% of the rated power of the interruptible device. The fluctuation threshold is determined based on the rated power of the interruptible device. Further, the fluctuation threshold ∈ [-5%·rated power, 5%·rated power].
[0076] In actual implementation, m > 3. Preferably, m = 5.
[0077] Step SS112: Combine the interruptible devices in the set to be tested in pairs, perform a second interrupt test on the paired interruptible devices, and record the second capacity during the second interrupt test.
[0078] In application, the top three interruptible devices in terms of capacity from the set under test are paired together. For example, the top three interruptible devices in terms of capacity in the set under test include a first device, a second device, and a third device. The first device and the second device are paired together to form a first group; the second device and the third device are paired together to form a second group; and the first device and the third device are paired together to form a third group.
[0079] In practical applications, the second interruption test includes: when two interruptible devices are running simultaneously in pairs, using the current active power on the total input side of both interruptible devices as the second baseline power; simultaneously issuing interrupt commands to both interruptible devices; and when the active power on the input side of both interruptible devices drops to the corresponding standby power, using the current active power on the total input side of both interruptible devices as the second power; and using the difference between the second baseline power and the second power as the second capacity. Further, the second capacity = second baseline power - second power.
[0080] Specifically, the second interrupt test includes: simultaneously operating two interruptible devices in pairs, and when the active power fluctuations on the input sides of both interruptible devices are less than or equal to the corresponding fluctuation thresholds, continuously collecting the third active power on the total input side of the two interruptible devices, and using the average of the third active power as the second baseline power; simultaneously issuing an interrupt command to the two interruptible devices, and after the active power on the input sides of both interruptible devices drops to the corresponding standby power and remains stable for at least 5 seconds, continuously collecting the fourth active power on the total input side of the two interruptible devices, and using the average of the fourth active power as the second power.
[0081] Step SS113: Calculate the attenuation coefficient based on the first and second capacities of the interruptible devices in each pair of groups, and calculate the comprehensive attenuation factor based on each attenuation coefficient.
[0082] In application, the attenuation coefficient of the first group is the ratio of the second capacity of the first group to the sum of the first capacity of the first device and the first capacity of the second device. The attenuation coefficient of the second group is the ratio of the second capacity of the second group to the sum of the first capacity of the second device and the first capacity of the third device. The attenuation coefficient of the third group is the ratio of the second capacity of the third group to the sum of the first capacity of the first device and the first capacity of the third device.
[0083] In practical applications, the attenuation coefficient should be ≥0.7. When any attenuation coefficient is <0.7, it indicates that there is strong coupling between the two interruptible devices that are paired together. The interruptible device with the smallest capacity is removed from the test set, and the interruptible device ranked m+1 is added to the test set. Then, step SS112 is executed again.
[0084] In practical implementation, the average of the attenuation coefficients of the first group, the second group, and the third group, multiplied by the correction factor, is used as the comprehensive attenuation factor. The correction factor is determined based on the number of interruptible devices in the test set. Experience shows that when the number of interruptible devices in the test set is ≤5, the complexity of the device combination is low, pairwise joint interruption tests cover the main coupling scenarios, and the statistical deviation of the attenuation effect is small; therefore, the correction factor = 1. When the number of interruptible devices in the test set is >5, the electrical and process coupling paths between devices exhibit non-linear growth, and pairwise joint tests alone cannot fully reflect the superimposed attenuation effect when multiple devices are interrupted simultaneously. Referring to the statistical distribution of interruptible capacity test data for similar industrial loads, the correction factor is set to 0.85 to 0.92. Specifically, when the number of interruptible devices in the test set is 6 to 8, the correction factor can be 0.92; when the number of interruptible devices in the test set is 9 to 12, the correction factor can be 0.88; and when the number of interruptible devices in the test set is greater than 12, the correction factor can be 0.85.
[0085] Step SS114: Correct the first capacity using the comprehensive attenuation factor, and determine the interruptible capacity based on the corrected first capacity.
[0086] In application, the product of the comprehensive attenuation factor and the first capacity of each interruptible device in the set to be tested is used as the corrected first capacity of the corresponding interruptible device.
[0087] In practical applications, step SS114 includes steps A1 to A3.
[0088] Step A1: The sum of the corrected first capacities of each interruptible device in the set to be tested is taken as the first interruptible capacity.
[0089] Step A2: Take n times the average of the maximum power of all effective working days as the second interruptible capacity.
[0090] In application, 0 < n < 1. Statistical analysis of historical load data from several typical industrial users such as steel, cement, and chemical companies shows that within a valid working day, the maximum interruptible capacity of interruptible equipment typically does not exceed 36% of the user's average daily maximum power. Therefore, preferably, n = 0.36.
[0091] Step A3: Take the minimum value between the first interruptible capacity and the second interruptible capacity as the interruptible capacity.
[0092] The first interruptible capacity is the theoretical maximum interruptible capacity at the equipment level, obtained by summing the results after equipment interruption testing and attenuation correction. The second interruptible capacity is the engineering feasible upper limit determined based on the user's historical maximum operating power. In actual production, the user's total load is limited by multiple factors such as transformer capacity, power line current carrying capacity, and constraints imposed by production processes. The sum of the interruptible capacities at the equipment level may exceed the actual interruptible upper limit at the grid interface. Therefore, taking the smaller value between the first and second interruptible capacities ensures that the evaluation result of the interruptible capacity reflects both the equipment potential and the actual feasible conditions on site.
[0093] In some embodiments, the interruptible duration is determined based on the minimum of the interruption duration agreed upon in the demand response agreement and the maximum interruption duration allowed by the equipment technical manual.
[0094] In some embodiments, the interrupt response rate is the average rate of decrease of the active power on the incoming side of the interruptible device during the period when the active power on the incoming side of the interruptible device first decreases from the baseline power to the standby power after receiving an interrupt command.
[0095] In application, the interrupt response rate is equal to the interruptible capacity divided by the interrupt response time. The interrupt response time is the time interval between the interrupt command issuance and the moment when the active power reaches standby power.
[0096] In some embodiments, the post-interruption recovery rate is the average rate of increase of the active power on the input side of the interruptible device during the period when the active power on the input side of the interruptible device first rises from the standby power to the baseline power after receiving a recovery command.
[0097] In application, the recovery rate after an interruption is equal to the interruptible capacity divided by the recovery time. The recovery time is the time interval between the issuance of the recovery command and the time when the active power rises to the baseline power.
[0098] In some embodiments, the transferable capacity is determined based on the average power during peak hours, the average power during the day, and the average power during off-peak hours of an effective working day.
[0099] When applied, the method for determining the transferable capacity includes steps SS121 to SS124.
[0100] Step SS121: The difference between the average power during peak hours of the effective working day and the daily average power is taken as the first transferable capacity.
[0101] In application, when an effective working day includes only one peak period, the difference between the average power during the peak period and the daily average power is used as the first transferable capacity. When an effective working day includes multiple peak periods, the maximum difference between the average power during each peak period and the daily average power is used as the first transferable capacity.
[0102] Step SS122: The difference between the average daily power of the effective working days and the average power during off-peak hours is used as the second transferable capacity.
[0103] In application, when the effective working day includes only one off-peak period, the difference between the daily average power of the effective working day and the average power of the off-peak period is used as the second transferable capacity. When the effective working day includes multiple off-peak periods, the maximum value among the differences between the daily average power of the effective working day and the average power of each off-peak period is used as the second transferable capacity.
[0104] Step SS123: Take the minimum value between the first transferable capacity and the second transferable capacity as the initial transferable capacity.
[0105] Step SS124: Take the average of the initial transferable capacity for all valid working days as the transferable capacity.
[0106] In some embodiments, the transferable duration is the length of the time window during which the target industrial user can transfer peak electricity consumption. Off-peak periods are typically longer than peak periods and do not become bottlenecks for transfer; therefore, the duration of peak periods determines the time range within which transfer operations can be performed. In this embodiment, the transferable duration is determined based on the time difference between the end time and the start time of the peak period.
[0107] In application, when an effective workday includes only one peak period, the transferable duration is determined based on the time difference between the end time and the start time of the peak period. When an effective workday includes multiple peak periods, the maximum difference between the average power of each peak period and the daily average power, and the time difference between the end time and the start time of the corresponding peak period, are used as the transferable duration.
[0108] In some embodiments, the peak-hour electricity consumption ratio is determined based on the ratio of the total electricity consumption during the peak hours of a valid working day to the total electricity consumption for the entire day of the valid working day.
[0109] When applied, the higher the proportion of peak-hour electricity consumption, the more concentrated the target industrial user's electricity consumption is during peak hours, and the greater the peak-shaving benefits that can be obtained through diversion.
[0110] In some embodiments, the production index is determined based on the ratio of total annual electricity consumption to total annual output.
[0111] In application, the total annual output is equal to the ratio of the total annual output value to the unit price of the product.
[0112] Step SS2: Integrate the interruptibility potential, transferability potential, and production indicators to calculate the overall potential score for the target industrial user.
[0113] When applied, the calculation method for the potential comprehensive score includes steps SS21 to SS24.
[0114] Step SS21: Obtain reference indicator parameters for multiple sample users similar to the target industrial user.
[0115] When applying this method, at least 10 domestic sample users similar to the target industrial user should be obtained as reference index parameters.
[0116] In practical applications, the reference indicator parameters include the interruptibility potential, transferability potential, and production indicators of the sample users.
[0117] Step SS22: Determine the reference range for each parameter of the indicator based on the reference indicator parameters of the multiple sample users.
[0118] When applying this method, remove the extreme values of each parameter of the reference indicator, take the maximum value of the remaining values as the upper limit of the reference range for the corresponding parameter, and take the minimum value of the remaining values as the lower limit of the reference range for the corresponding parameter.
[0119] In practical applications, the reference range includes the reference range for interruptible capacity, the reference range for interruptible duration, the reference range for interruption response rate, the reference range for recovery rate after interruption, the reference range for transferable capacity, the reference range for transferable duration, the reference range for peak electricity consumption ratio, and the reference range for production indicators.
[0120] In practice, the upper limit of any reference interval is not equal to the lower limit.
[0121] Step SS23: Standardize each parameter of the indicator parameter according to the indicator parameter and the end value of the corresponding reference interval.
[0122] When applying this method, subtract the lower limit of the corresponding reference interval from the indicator parameter to obtain the first difference; subtract the lower limit of the corresponding reference interval from the upper limit to obtain the second difference; divide the first difference by the second difference to obtain the standardized indicator parameter.
[0123] The standardized indicator parameters include: standardized interruptible capacity, standardized interruptible duration, standardized interruption response rate, standardized post-interruption recovery rate, standardized transferable capacity, standardized transferable duration, standardized peak-hour electricity consumption ratio, and standardized production indicators.
[0124] In practical applications, all standardized index parameters belong to [0,1].
[0125] Step SS24: Weighted summation and standardization of the indicator parameters to obtain the comprehensive potential score of the target industrial user.
[0126] When applied, step SS24 includes steps SS241 to SS244.
[0127] Step SS241: Calculate the weighted sum of the standardized interruptible capacity, standardized interruptible duration, standardized interrupt response rate, and standardized post-interrupt recovery rate to obtain the first score.
[0128] When applied, the standardized interruptible capacity, standardized interruptible duration, standardized interrupt response rate, and standardized post-interrupt recovery rate are all given equal weights, and the sum of their weights is 1.
[0129] Step SS242: Calculate the weighted sum of the standardized transferable capacity, standardized transferable duration, and standardized peak-hour electricity consumption ratio to obtain the second score.
[0130] When applied, the standardized transferable capacity, the standardized transferable duration, and the standardized peak-hour electricity consumption ratio are all weighted equally, and the sum of their weights is 1.
[0131] Step SS243: Use the standardized production indicators as the third score.
[0132] Step SS244: Weighted summation of the first score, the second score, and the third score to obtain the comprehensive potential score of the target industrial user.
[0133] When applying the rating, the first rating, the second rating, and the third rating are all given equal weights, and the sum of their weights is 1.
[0134] Step SS3: Determine whether the target industrial user is a high-potential user, a medium-potential user, or a low-potential user based on the comprehensive potential score.
[0135] When applied, if the comprehensive potential score is greater than or equal to the first threshold, the target industrial user is a high-potential user; if the comprehensive potential score is less than the first threshold but greater than the second threshold, the target industrial user is a medium-potential user; and if the comprehensive potential score is less than or equal to the second threshold, the target industrial user is a low-potential user.
[0136] Target industrial users identified as high-potential users will be given priority for inclusion in the demand response resource pool and will enjoy higher demand response subsidy standards; medium-potential users will be considered as alternative resources in the demand response resource pool; low-potential users will not be included in the demand response resource pool for the time being.
[0137] In practical applications, 0 < second threshold < first threshold < 1.
[0138] In practice, based on statistical analysis, the first threshold is taken as the top 30% quantile of the historical potential composite score, and the second threshold is taken as the bottom 30% quantile of the historical potential composite score. In some embodiments, the second threshold can be 0.4, and the first threshold can be 0.7.
[0139] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0140] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0141] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0142] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0143] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.
Claims
1. A method for analyzing the adjustability potential of industrial load, characterized in that, include: The indicator parameters are determined based on the load characteristics of the target industrial users' effective working days; wherein, the effective working days have peak periods and trough periods; the indicator parameters include interruptibility potential, transferability potential and production indicators considering attenuation effects; By integrating the interruptibility potential, transferability potential, and production indicators, a comprehensive potential score for the target industrial user is calculated. Based on the comprehensive potential score, the target industrial user is determined to be a high-potential user, a medium-potential user, or a low-potential user.
2. The method for analyzing the industrial load adjustment potential according to claim 1, characterized in that, The interruptibility potential includes interruptibility capacity, interruptibility duration, interruption response rate, and post-interruption recovery rate; The interruptible capacity is determined based on a comprehensive attenuation factor and the difference between the average power of the interruptible device during operation and the average power during standby; wherein, the comprehensive attenuation factor is determined based on the difference between the first capacity of the interruptible device when interrupted individually and the second capacity when interrupted in pairs. The interruptible duration is determined based on the minimum value between the interruption duration agreed upon in the demand response agreement and the maximum interruption duration allowed by the equipment technical manual. The interrupt response rate is the average rate of decrease of the active power on the incoming side of the interruptible device during the period when the active power on the incoming side of the interruptible device first drops from the baseline power to the standby power after receiving an interrupt command. The recovery rate after interruption is the average rate of increase of the active power on the incoming side of the interruptible device during the period when the active power on the incoming side of the interruptible device first rises from the standby power to the baseline power after receiving the recovery command.
3. The method for analyzing the industrial load adjustment potential according to claim 2, characterized in that, The method for determining the interruptible capacity includes: Perform a first interruption test on each interruptible device on the production line, record the first capacity during the first interruption test, and sort the interruptible devices in descending order of the first capacity. Select the top m interruptible devices as the test set; where m > 3. The interruptible devices in the set to be tested are paired up, and a second interrupt test is performed on the paired interruptible devices. The second capacity during the second interrupt test is recorded. The attenuation coefficient is calculated based on the first and second capacities of the interruptible devices in each pair of groups, and the comprehensive attenuation factor is calculated based on each attenuation coefficient; wherein, the attenuation coefficient is ≥0.7; The first capacity is corrected using the comprehensive attenuation factor, and the interruptible capacity is determined based on the corrected first capacity. The first interrupt test includes, while the interruptible device is running, taking the current active power on the incoming side of the interruptible device as a first baseline power; issuing an interrupt command to the interruptible device; when the active power on the incoming side of the interruptible device drops to the standby power, taking the current active power on the incoming side of the interruptible device as a first power; and taking the difference between the first baseline power and the first power as the first capacity of the interruptible device. The second interrupt test includes: when two interruptible devices are running in pairs, the current active power of the total incoming line side of the two interruptible devices is used as the second baseline power; an interrupt command is issued to the two interruptible devices at the same time; when the active power of the incoming line side of the two interruptible devices drops to the corresponding standby power, the current active power of the total incoming line side of the two interruptible devices is used as the second power; and the difference between the second baseline power and the second power is used as the second capacity.
4. The method for analyzing the industrial load adjustment potential according to claim 3, characterized in that, The method for determining the interruptible capacity also includes: The sum of the corrected first capacities of each interruptible device in the set to be tested is taken as the first interruptible capacity; The second interruptible capacity is n times the average of the maximum power of all effective working days; where 0 < n < 1. The minimum value between the first interruptible capacity and the second interruptible capacity shall be taken as the interruptible capacity.
5. The method for analyzing the industrial load adjustment potential according to claim 1, characterized in that, The transferable potential includes transferable capacity, transferable duration, and peak-hour electricity consumption percentage; The transferable capacity is determined based on the average power during peak hours, the average power during the day, and the average power during off-peak hours of the effective working days; wherein, both peak hours and off-peak hours include at least 2 sampling points; The transferable duration is determined based on the time difference between the end time of the peak period and the start time of the peak period. The peak-hour electricity consumption ratio is determined based on the ratio of total electricity consumption during peak hours to total electricity consumption for the entire effective working day.
6. The method for analyzing the industrial load adjustment potential according to claim 5, characterized in that, The method for determining the transferable capacity includes: The difference between the average power during peak hours on an effective working day and the average daily power is taken as the first transferable capacity. The difference between the average daily power on effective working days and the average power during off-peak hours is used as the second transferable capacity. The minimum value between the first transferable capacity and the second transferable capacity is used as the initial transferable capacity; The average of the initial transferable capacity for all valid working days is taken as the transferable capacity.
7. The method for analyzing the industrial load adjustment potential according to claim 6, characterized in that, When a valid workday includes multiple peak periods and / or multiple off-peak periods: The first transferable capacity is the maximum value among the differences between the average power during each peak period and the daily average power; The second transferable capacity is the maximum value among the differences between the daily average power of the effective working days and the average power of each off-peak period.
8. The method for analyzing the industrial load adjustment potential according to claim 1, characterized in that, The production targets are determined based on the ratio of total annual electricity consumption to total annual output. The total annual output is equal to the ratio of the total annual output value to the unit price of the product.
9. The method for analyzing the industrial load adjustment potential according to claim 1, characterized in that, The calculation method for the potential comprehensive score includes: Obtain reference indicator parameters for multiple sample users similar to the target industrial user; wherein, the reference indicator parameters include the sample users' interruptibility potential, transferability potential, and production indicators; Based on the reference indicator parameters of multiple sample users, determine the reference range for each parameter of the indicator; Based on the indicator parameters and the corresponding reference interval values, each parameter of the indicator parameters is standardized; The weighted summation and standardization of the various indicator parameters yields the comprehensive potential score for the target industrial user.
10. The method for analyzing the industrial load adjustment potential according to claim 1, characterized in that, The determination of whether the target industrial user is a high-potential user, medium-potential user, or low-potential user based on the comprehensive potential score includes: When the comprehensive potential score is greater than or equal to the first threshold, the target industrial user is a high-potential user; When the potential comprehensive score is less than the first threshold but greater than the second threshold, the target industrial user is a medium-potential user. When the overall potential score is less than or equal to the second threshold, the target industrial user is a low-potential user; Where 0 < second threshold < first threshold < 1.