Park energy intelligent operation management method and system based on digital twinning

Abstract

The present application belongs to the technical field of park energy operation management, and relates to a park energy intelligent operation management method and system based on digital twinning. The present application obtains the actual operation power, digital twinning predicted power and energy regulation record of each energy unit, determines the deviated energy unit and the corresponding compensating energy unit; removes the planned regulation power and the compensating power for other deviated energy units from the actual regulation power of the compensating energy unit to obtain the additional compensating power; determines the additional compensating power still existing in the future operation time period, determines the remaining regulation power according to the additional compensating power and the adjustable power of the compensating energy unit, and determines the regulation capacity gap; adjusts the additional compensating power under the condition of meeting the current park energy demand to generate a park energy operation scheme. The present application can identify the situation that the compensating power long-term occupies the regulation resources, and reduce the risk that the subsequent available regulation power is overestimated to cause the invalidation of the energy operation scheme.

Description

Technical Field

[0001] This invention relates to the field of park energy operation and management technology, and in particular to a park energy intelligent operation and management method and system based on digital twins. Background Technology

[0002] In multi-energy collaborative operation scenarios such as industrial parks and smart industrial parks, digital twin energy models are typically used to predict the operating conditions of photovoltaic, energy storage, cold and heat source equipment, production energy-consuming equipment, and building energy-consuming equipment, and based on this, formulate energy storage charging and discharging, load regulation, and park power purchase plans. When the actual operating power of an energy unit deviates from the digital twin predicted power, the energy operation system usually calls on other energy units with regulation capabilities to compensate, in order to maintain the overall energy stability of the park.

[0003] However, during the long-term operation of the park, equipment performance degradation, changes in environmental conditions, and changes in production behavior may cause some energy units to deviate from the digital twin's predicted power for an extended period. For example, after the performance of cold and heat source equipment declines, the actual power consumption may consistently exceed the digital twin's predicted power. The energy operation system may then continuously call upon energy storage devices to increase discharge power to compensate, thus maintaining the park's overall power purchase capacity at a normal level. In this case, although the energy storage devices maintain the current energy balance of the park, their power available for subsequent energy regulation has been occupied by the compensated power for an extended period.

[0004] Existing digital twin energy models may still allocate adjustment tasks based on the original adjustable power in subsequent energy operation planning, making it difficult to distinguish between planned adjustment power and adjustment power additionally occupied for compensation. This leads to an overestimation of the actual available adjustment power. When new energy adjustment demands arise, such as a decrease in renewable energy output or an increase in production load, some of the power originally intended for subsequent adjustment has already been occupied by previous compensation tasks, easily resulting in insufficient actual adjustment capacity. This makes it impossible to continue implementing the original energy operation plan, leading to an increase in the park's purchased electricity, a decrease in peak shaving capacity, and an increase in energy operation costs, affecting the accuracy of the park's energy resource allocation and operational reliability. Summary of the Invention

[0005] In view of this, to solve the problems mentioned in the background technology above, a smart energy operation and management method and system based on digital twins for industrial parks is proposed. This invention proposes a smart energy operation and management method for industrial parks based on digital twins, comprising the following steps: acquiring the actual operating power, digital twin predicted power, and energy regulation records of each energy unit, and identifying the deviating energy units whose actual operating power continuously deviates from the digital twin predicted power;

[0006] The compensation energy unit is determined based on the energy regulation record corresponding to the deviation energy unit. The planned regulation power and the compensation power for other deviation energy units are separated from the actual regulation power of the compensation energy unit to obtain the additional compensation power for the deviation energy unit.

[0007] Determine the additional compensation power that still exists during the future operating period, determine the remaining regulation power based on the additional compensation power and the adjustable power of the compensation energy unit during the future operating period, match the remaining regulation power with the corresponding energy regulation demand, and determine the regulation capacity gap.

[0008] Based on the capacity gap, the corresponding additional compensation power is adjusted while meeting the current energy demand of the park. The released regulation power is then allocated to the energy regulation demand for future operating periods to generate a park energy operation plan.

[0009] In summary, due to the adoption of the above-mentioned smart operation and management method and system for park energy based on digital twin, the beneficial effects of the present invention are: (1) The present invention determines the deviating energy unit by comparing the actual operating power with the digital twin predicted power, and determines the corresponding compensation energy unit according to the energy regulation record, so that when the overall power purchase of the park remains normal due to the compensation effect, it can still identify the compensation behavior formed by the long-term deviation of local energy units from the digital twin predicted power.

[0010] (2) This invention solves the problem of difficulty in distinguishing the compensation power occupancy when the same compensation energy unit undertakes multiple regulation tasks by separating the planned regulation power and the compensation power for other deviation energy units from the actual regulation power of the compensation energy unit, and makes the subsequent remaining regulation power determined according to the actual resource occupancy.

[0011] (3) The present invention determines the remaining regulation power for future operating periods based on the additional compensation power, and determines the regulation capacity gap in combination with future energy regulation demand. Under the condition of meeting the current energy demand of the park, the corresponding regulation power is released to avoid the regulation power that has been used for compensation from participating in subsequent energy allocation again, thereby reducing the risk of the park's energy operation plan failing due to insufficient actual regulation capacity. Attached Figure Description

[0012] Figure 1 This is a flowchart of steps S1 to S4 of the smart energy operation and management method for parks based on digital twins according to the present invention;

[0013] Figure 2 This is a system block diagram showing the sequential connection of the power acquisition module, the compensation power determination module, the regulation capability determination module, and the energy operation module of the present invention.

[0014] Figure 3This is a schematic diagram of the process for determining the additional compensation power of the present invention;

[0015] Figure 4 This is a graph showing the relationship between the actual operating power of the deviation energy unit, the predicted power of the deviation energy unit based on its digital twin, the actual adjusted power of the compensation energy unit, and the power purchased by the park over time. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of the present invention.

[0017] The following description, in conjunction with the accompanying drawings, details the intelligent operation and management method and system for park energy based on digital twins provided by this invention.

[0018] Example 1:

[0019] Please see Figure 1 As shown, the present invention proposes a smart energy operation and management method for industrial parks based on digital twins, including steps S1 to S4.

[0020] During the park's energy operation, each energy unit undertakes corresponding adjustment tasks according to the park's energy operation plan. When some energy units deviate from the digital twin's predicted power for an extended period, the energy operation system will call upon energy units with adjustable power for compensation. If this compensation persists for a long time, and subsequent adjustment tasks are still arranged according to the original adjustable power, the power already used for compensation will be included again in the future available power.

[0021] This embodiment processes the process according to steps S1 to S4, sequentially determining the deviation energy unit, compensation energy unit, additional compensation power, remaining regulation power, and regulation capacity gap, and adjusting the additional compensation power according to the regulation capacity gap.

[0022] S1. Obtain the actual operating power, digital twin predicted power, and energy regulation records of each energy unit, and identify the energy units whose actual operating power continuously deviates from the digital twin predicted power.

[0023] like Figure 1 As shown in step S1, this step first obtains the actual operating power, digital twin predicted power and energy regulation record of each energy unit, and determines whether the energy unit has formed a continuous deviation by the power difference at continuous sampling time, thereby identifying the deviation energy unit.

[0024] Energy units within the industrial park experience short-term power fluctuations during start-up, shutdown, production cycle switching, and changes in heating and cooling loads. Judging solely based on a single sampling point could easily lead to misidentification of transient changes during normal adjustments as problematic energy units. Therefore, this step uses continuously sampled power differences and their directions to determine problematic energy units.

[0025] Specifically, the output power of the inverter equipment is read from the grid-connected branch of the photovoltaic energy unit, the charging and discharging power of the energy storage converter equipment is read from the AC side of the energy storage energy unit, and the active power of the electricity metering equipment is read from the power supply branches of the cold and heat source equipment, production energy-consuming equipment, and building energy-consuming equipment. The energy operation system reads the actual operating power at a uniform sampling period and reads the digital twin predicted power at the same sampling time, while also reading the energy regulation record. The energy regulation record records the regulated energy unit, the start time of regulation, the expected end time, the regulation direction, the target regulation power, the actual regulation power before and after the execution of the corresponding regulation task, and the deviation energy unit that triggered the regulation task.

[0026] For each energy unit, the difference between the actual operating power at the same sampling time and the predicted power of the digital twin is used as the power difference.

[0027] For electrical energy units, a power difference greater than zero indicates that the actual electricity consumption is higher than the digital twin predicted power. For photovoltaic power generation and energy storage discharge energy units, the power direction is uniformly converted into the direction of its effect on the power purchased by the park, so that different energy units can be compared using the same direction.

[0028] The deviation determination value is determined based on the power difference during the historical normal operation of the corresponding energy unit without performing energy regulation tasks. The upper limit of the absolute value of the power difference at each sampling time is taken, and the maximum permissible measurement error of the corresponding power metering equipment is converted to the same power unit as the power difference and added to the upper limit. The resulting value is used as the deviation determination value. The maximum permissible measurement error is obtained from the technical parameters of the corresponding power metering equipment. When the power difference does not exceed the deviation determination value, the energy unit is not determined to be a deviation energy unit.

[0029] When the absolute value of the power difference at multiple consecutive sampling moments of the same energy unit is greater than the deviation judgment value, and the power difference maintains the same positive and negative direction, the energy unit is identified as a deviation energy unit. The stabilization time is taken as the upper limit of the time elapsed from the start of the adjustment to the point where the power difference re-enters the deviation judgment value during the historical normal adjustment process of the energy unit. The number of consecutive sampling moments is taken as the smallest integer not less than the value obtained by dividing the stabilization time by the uniform sampling period. The sampling moment that first exceeds the deviation judgment value among the consecutive sampling moments that meet the continuous judgment condition is recorded as the deviation formation moment, and the corresponding power difference and the direction of the power difference are recorded for use in step S2.

[0030] S2. Determine the compensation energy unit based on the energy regulation record corresponding to the deviation energy unit, and extract the planned regulation power and the compensation power for other deviation energy units from the actual regulation power of the compensation energy unit to obtain the additional compensation power for the deviation energy unit.

[0031] A single compensation energy unit may simultaneously undertake planned regulation tasks in the park's energy operation plan, as well as compensation tasks corresponding to multiple deviation energy units. If its entire actual regulation power is directly used as the compensation power of the current deviation energy unit, the original planned regulation power and other compensation power will be mixed in. Therefore, this step first identifies the compensation energy unit, and then distinguishes its actual regulation power.

[0032] Specifically, starting from the time of deviation formation recorded in step S1, subsequent energy regulation records are read, energy units that undergo regulation after the deviation is formed are screened, and the actual regulation power before and after regulation is compared. When the regulation direction recorded in the energy regulation record can offset the power difference of the deviation energy unit, and the actual regulation power changes in that direction, the energy unit is identified as a compensation energy unit.

[0033] Please see Figure 3 As shown, the additional compensation power for the deviation energy unit is determined according to steps 201 to 203:

[0034] Step 201: Based on the energy regulation record corresponding to the deviation energy unit, determine the planned regulation power undertaken by the compensation energy unit before the deviation occurs, and obtain the actual regulation power of the compensation energy unit after the deviation occurs.

[0035] Step 202: Based on the energy regulation records of other deviation energy units after the deviation is formed and the actual regulation power change of the compensation energy unit, determine the compensation power actually undertaken by the compensation energy unit for other deviation energy units.

[0036] Step 203: Separate the planned regulation power and the compensation power for other deviation energy units from the actual regulation power, and determine the additional compensation power for deviation energy units based on the regulation direction of the separated power.

[0037] For step 201, the planned regulation power allocated to the compensation energy unit during the corresponding operating period is read from the park energy operation plan generated before the deviation occurs; after the deviation occurs, the total regulation power actually undertaken by the compensation energy unit is read as the actual regulation power.

[0038] The actual regulating power of a compensation energy unit is the total regulating power it currently undertakes, including planned regulating power and compensation power undertaken after deviations occur. The planned regulating power, compensation power for other deviation energy units, and compensation power to be confirmed are all uniformly determined as positive or negative according to their influence on the park's purchased electricity.

[0039] For step 202, based on the energy regulation records after the deviation is formed, the deviation energy unit and the compensation energy unit are matched according to the regulation start time and regulation direction. When there is only one compensation task in the same sampling period, the actual regulation power change before and after the execution of the corresponding regulation task is determined as the actual compensation power undertaken by the compensation task. When there are multiple compensation tasks in the same direction in the same sampling period, the actual regulation power change of the compensation energy unit in the sampling period is allocated to each compensation task according to the proportion of the target regulation power of each compensation task to the total target regulation power in the same direction. When there are compensation tasks in opposite directions in the same sampling period, they are counted separately according to the direction of each task's effect on the park's purchased power, and only the task whose direction is consistent with the actual regulation power change of the compensation energy unit is counted as the actual compensation power undertaken in that direction.

[0040] For the same sampling time, the first The compensation energy unit is for the first The unconfirmed compensation power generated by each deviation energy unit is determined according to the following formula, where the actual regulation power, planned regulation power, and each compensation power are all taken as the power values ​​corresponding to the same sampling time: .

[0041] in, Indicates the first The compensation energy unit is for the first The unconfirmed compensation power generated by the deviation energy unit; Indicates the first The total regulation power currently actually undertaken by each compensation energy unit, including planned regulation power and compensation power undertaken after deviations occur; Indicates the first The planned regulation power allocated to each compensation energy unit before the current deviation occurred; Indicates the first The compensation energy unit is for the first The compensation power undertaken by each other deviation energy unit; Indicates the sequence number of the current deviation energy unit; Indicates the serial number of the compensation energy unit; Indicates the sequence number of other deviation energy units besides the current deviation energy unit; This represents a summation operation, accumulating the compensation power corresponding to all other deviation energy units. All power values ​​in the formula use the same power unit.

[0042] For step 203, the planned regulation power and the compensation power for other deviation energy units are separated from the actual regulation power of the compensation energy unit, and the remaining power is used as the unconfirmed compensation power for the current deviation energy unit.

[0043] Compare the directions of the power to be confirmed and the power difference of the deviation energy unit; when the two have opposite effects on the power purchased by the park, the absolute value of the power to be confirmed is determined as the additional compensation power for the deviation energy unit; when the directions are the same, the additional compensation power for the current deviation energy unit is not included.

[0044] In a specific operational process, the same compensation energy unit, taking an energy storage energy unit as an example, simultaneously undertakes planned regulation power and compensation power for multiple deviation energy units. First, the regulation power already allocated for the corresponding operating period is read from the park's energy operation plan before the current deviation occurs, and this is taken as the planned regulation power, because this part of the power was determined before the current deviation occurred. Then, the compensation power triggered by other deviation energy units and undertaken by this energy storage energy unit is read from the energy regulation record after the deviation occurs, and the above two parts of power are sequentially separated from the current actual regulation power to obtain the compensation power to be confirmed.

[0045] Finally, the adjustment direction of the compensation power to be confirmed is compared with the power difference direction of the current deviation energy unit; if the directions are opposite, it is determined as additional compensation power. After stripping, only the portion not belonging to the planned adjustment power and compensation power of other deviation energy units is retained, and the additional compensation power is used in step S3 to determine the remaining adjustment power.

[0046] Please see Figure 4 As shown, Figure 4 The horizontal axis represents time, and the vertical axis of the three vertically arranged curves represents power. In the first graph, the red solid line represents the actual operating power of the deviation energy unit, and the blue dashed line represents the digital twin predicted power of the deviation energy unit. In the second graph, the green solid line represents the actual regulated power of the compensation energy unit. In the third graph, the orange solid line represents the power purchased by the park. Figure 4 The time and power coordinates in the diagram are used to represent the power changes during a specific operation process, with the black vertical dashed line corresponding to the moment when the deviation was formed.

[0047] Before the deviation formation time, the power difference between the actual operating power of the deviation energy unit and the predicted power of the digital twin is within the range of normal operation fluctuation and the maximum allowable measurement error. After the deviation formation time, the actual operating power of the deviation energy unit deviates from the predicted power of the digital twin at multiple subsequent sampling times. The actual adjustment power of the compensation energy unit changes in the direction of offsetting the power difference. Under the compensation effect, the power purchased by the park is still within the current allowable power purchase range of the park.

[0048] Figure 4 The actual operating power of the deviation energy unit, the predicted power of the digital twin, and the time of deviation formation are determined according to step S1. The actual adjustment power of the compensation energy unit is read according to step S2. The power purchased by the park is read according to step S4 and used to determine the additional compensation power that can be reduced.

[0049] S3. Determine the remaining regulation power based on the additional compensation power and the adjustable power of the compensation energy unit, and match the remaining regulation power with the energy regulation demand for future operating periods to determine the regulation capacity gap.

[0050] like Figure 4 As shown, after the deviation is formed, the actual operating power of the deviation energy unit gradually deviates from the digital twin predicted power, and the actual adjustment power of the compensation energy unit increases accordingly, so that the power purchased by the park remains within the allowable range of the power purchased during the corresponding operating period. Step S3 reads the adjustable power of the compensation energy unit in the future operating period and determines the additional compensation power that still exists in the future operating period; the additional compensation power is subtracted from the adjustable power to obtain the remaining adjustment power.

[0051] When the compensation task continues after a deviation has occurred, the instantaneous power margin currently existing in the compensation energy unit is not equivalent to the adjustable power available for future operating periods. Therefore, this step determines the adjustable power based on the future operating period and then deducts the additional compensation power that still exists within that period.

[0052] For energy storage units, the duration of the future operating period is determined by the start and end times of the corresponding energy regulation needs in the park's energy operation plan, and charging or discharging regulation is determined based on the regulation direction of the energy regulation needs. The available energy storage at the start of the future operating period is determined based on the current available energy storage and the cumulative charging / discharging direction and power corresponding to planned regulation and ongoing additional compensation from the current time to the start of the future operating period. The energy storage corresponding to charging is included in the increase, and the energy storage corresponding to discharging is included in the decrease. During discharging regulation, the discharge power that can be provided within that time period is determined based on the available energy storage at the start of the future operating period and the duration, and compared with the current maximum allowable discharge power of the energy storage converter; the smaller of these is taken as the adjustable power. During charging regulation, the charging power that can be provided within that time period is determined based on the remaining energy storage that can be charged under the limitations of the energy storage device's operating parameters and the duration, and compared with the current maximum allowable charging power of the energy storage converter; the smaller of these is taken as the adjustable power.

[0053] For adjustable loads and heating / cooling source equipment, the adjustable power is determined by the difference between the current operating power and the allowable adjustment boundary in the corresponding direction, based on the adjustment direction of energy regulation needs. It is then verified whether the time required to maintain this power level covers future operating periods and whether the adjustment meets the current energy demand of the park. The allowable adjustment boundary is determined based on the operating parameter limitations of the corresponding energy unit and the current energy demand of the park.

[0054] The adjustable power in step S3 is the power that the compensation energy unit can still use for new energy regulation after deducting the planned adjustment power already allocated by the park's energy operation plan during the future operating period.

[0055] Based on the power difference of the deviation energy unit and the expected end time of the corresponding compensation task, it is determined whether the additional compensation power will still exist in the future operating period. If the deviation energy unit maintains the same directional deviation at subsequent sampling times, and the expected end time of the corresponding compensation task is not earlier than the end time of the future operating period, the additional compensation power is considered to cover the entire future operating period. If the expected end time of the compensation task is within the future operating period, the remaining adjustment power is determined with that end time as the boundary. If the additional compensation power is adjusted during the future operating period, the remaining adjustment power is determined with the corresponding adjustment time as the boundary. When the adjustment direction of the additional compensation power is consistent with the adjustment direction of the determined adjustable power, the remaining adjustment power of the compensation energy unit is determined according to the following formula: .

[0056] in, Indicates the first The remaining regulating power of each compensation energy unit during its future operating period; Indicates the first The adjustable power that each compensation energy unit can still use for new energy regulation during the future operating period after deducting the planned regulation power already allocated by the park's energy operation plan; Indicates the first The additional compensation power that each compensation energy unit will still bear during the future operating period; Indicates the serial number of the compensation energy unit; This indicates that the maximum value among the values ​​within the parentheses is taken. When the difference between the adjustable power and the additional compensation power is less than zero, the remaining adjustable power is zero. All power values ​​in the formula use the same power unit. When determining the remaining adjustable power in a certain adjustment direction, only the additional compensation power occupying the same adjustment direction during future operating periods is deducted from the adjustable power in that direction. When the adjustment direction is reversed, the adjustable power in that direction is re-determined based on the current operating power of the compensation energy unit and the allowable adjustment boundary of the corresponding direction.

[0057] Subsequently, the projected and target power purchases for the future operating period are retrieved from the digital twin energy model. The target power purchase is taken from the set value corresponding to the future operating period in the park's energy operation plan. The projected power purchase is calculated by subtracting the projected photovoltaic power generation from the projected power consumption of production equipment, building equipment, and heating / cooling source equipment, and combining this with the already planned energy storage charging and discharging power. The absolute value of the difference between the projected and target power purchases is taken as the energy regulation demand, and the regulation direction is determined based on the sign of the difference. When the projected power purchase is higher than the target power purchase, the regulation direction is to reduce the power purchase; when the projected power purchase is lower than the target power purchase, the regulation direction is to increase the power purchase.

[0058] For each future operating period, the adjustment direction of the remaining adjustment power of each compensation energy unit is compared with the adjustment direction of the energy adjustment demand. The remaining adjustment power with the same adjustment direction that can cover the period is accumulated. When the energy adjustment demand is greater than the accumulated remaining adjustment power, the difference between the two is the adjustment capacity gap; otherwise, the adjustment capacity gap is zero.

[0059] The resulting adjustment capacity gap is used as the input for step S4 to determine the additional compensation power to be adjusted.

[0060] S4. Based on the capacity gap, adjust the corresponding additional compensation power while meeting the current energy demand of the park, and allocate the released regulation power to the energy regulation demand of future operating periods to generate the park's energy operation plan.

[0061] like Figure 4As shown, when the deviation energy unit deviates from the digital twin's predicted power for an extended period, the compensation energy unit continues to provide compensation power after the deviation occurs, ensuring that the park's purchased power remains within the allowable range for the corresponding operating period. Step S3 determines the remaining regulating power and regulation capacity gap of the compensation energy unit; this step adjusts the additional compensation power while meeting the current energy demand of the park, and uses the released regulating power for future energy regulation needs.

[0062] If the current compensation is stopped directly, the power difference that was originally offset by the deviation energy unit will be reapplied to the current power purchased by the park. Therefore, this step first determines the additional compensation power that can be reduced at present, and then releases the corresponding regulation power according to the regulation capacity gap.

[0063] Specifically, the system reads the current actual power purchase capacity of the park, the current energy demand of the park, and the current permitted power purchase capacity of the park. The current energy demand of the park includes current production energy consumption, building energy consumption, and heating and cooling demand, and is constrained by the requirement that the adjusted power purchase capacity of the park remains within the permitted power purchase capacity range for the corresponding operating time period. The current permitted power purchase capacity of the park is determined according to the permitted power purchase capacity range set in the park's energy operation plan for the corresponding operating time period. For the additional compensation power generated by the compensation energy unit, the permitted reduction of the additional compensation power is determined based on the direction of change in the park's power purchase capacity after reducing the additional compensation power, while ensuring that the adjusted power purchase capacity of the park remains within the permitted power purchase capacity range for the corresponding operating time period. For the additional compensation power generated by energy storage discharge, the permitted reduction of the additional compensation power does not exceed the power margin between the upper limit of the permitted power purchase capacity range and the current actual power purchase capacity.

[0064] For the compensation power generated by adjustable loads, the recoverable load power is determined based on the current allowable operating range of production energy consumption and building energy consumption; for the compensation power generated by cold and heat source equipment, the compensation power that can be reduced is determined based on the current cold and heat demand and the allowable adjustment boundary of the cold and heat source equipment.

[0065] When the sum of the allowable reductions in additional compensation power of each compensation energy unit is not less than the regulation capacity gap, the additional compensation power to be adjusted is determined from the compensation energy units that still meet the current energy demand of the park after the reduction in compensation and whose released regulation power can be used for the corresponding future operating period, in descending order of the allowable reduction in additional compensation power, until the released regulation power covers the regulation capacity gap.

[0066] When the sum of the allowable reduction in additional compensation power is less than the regulation capacity gap, all the allowable reduction in additional compensation power will be released and allocated to the energy regulation demand for the corresponding future operating period. The remaining part of the regulation capacity gap after deducting the released regulation power will be used to correct the target power purchase for the corresponding future operating period, so that the corrected target power purchase is adjusted to the power value corresponding to the remaining part in the direction of the predicted power purchase in the park, and the park energy operation plan will be regenerated accordingly.

[0067] In a specific operation, the actual power consumption of a certain cold and heat source device is consistently higher than the power predicted by the digital twin. Taking the energy storage unit as an example, the compensation energy unit maintains the increased discharge power for compensation after the deviation occurs. After determining in step S3 that there is a regulation capacity gap in the future operating period, the additional compensation power that the energy storage unit can reduce is determined based on the current actual power purchased by the park and the corresponding allowable power purchase range. Then, the allowable reduction of the additional compensation power is compared with the regulation capacity gap. If the gap can be covered, the corresponding power is released according to the gap; if it cannot be covered, all the allowable reduction of the additional compensation power is released, and the target power purchase for the corresponding future operating period is corrected in the aforementioned manner.

[0068] After the additional compensation power is adjusted, the remaining regulation power of the compensation energy unit in the future operating period is re-determined according to step S3, and the released regulation power is allocated to the energy regulation demand that generates the regulation capacity gap; based on the adjusted additional compensation power and the re-determined remaining regulation power, a new park energy operation plan is generated.

[0069] The new park energy operation plan is written into the energy operation system, serving as the basis for energy storage charging and discharging, cold and heat source power adjustment, and adjustable load adjustment during the next operating period. Step S1 is re-executed in the next detection cycle to continue identifying the deviating energy units and their corresponding compensation power.

[0070] Example 2:

[0071] Please see Figure 2 As shown, this embodiment provides a smart energy operation and management system for parks based on digital twins, used to execute the method described in Embodiment 1, including a power acquisition module, a compensation power determination module, a regulation capability determination module, and an energy operation module.

[0072] The power acquisition module is used to read the actual operating power, digital twin predicted power and energy regulation records of each energy unit according to a unified sampling time. It determines the deviation energy unit based on the absolute value and direction of the power difference at multiple consecutive sampling times, and sends the deviation formation time, power difference and power difference direction to the compensation power determination module.

[0073] The compensation power determination module is connected to the power acquisition module and is used to match the energy regulation record based on the time of deviation formation to determine the compensation energy unit; combined with the actual regulation power change before and after the execution of the corresponding regulation task, the planned regulation power and the compensation power actually undertaken by other deviation energy units are separated from the actual regulation power undertaken by the compensation energy unit, and the additional compensation power is determined according to the regulation direction of the remaining power.

[0074] The regulation capacity determination module is connected to the compensation power determination module. It is used to determine whether the additional compensation power will still exist in the future operating period. Based on the adjustable power of the compensation energy unit after deducting the allocated planned regulation power in the future operating period and the remaining additional compensation power, the remaining regulation power is determined and compared with the corresponding energy regulation demand to determine the regulation capacity gap.

[0075] The energy operation module is connected to the regulation capacity determination module to determine the allowable reduction of additional compensation power based on the current energy demand of the park; adjust the additional compensation power according to the regulation capacity gap, allocate the released regulation power to the energy regulation demand of future operating periods, and generate the park energy operation plan.

[0076] Each module executes in the order of power acquisition, compensation power determination, regulation capability determination, and energy operation. In the next detection cycle, the actual operating power and digital twin predicted power of each energy unit are reread.

[0077] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto.

Claims

1. A smart energy operation and management method for industrial parks based on digital twins, characterized in that: include: Acquire the actual operating power, digital twin predicted power, and energy regulation records of each energy unit to identify the energy units whose actual operating power continuously deviates from the digital twin predicted power; The compensation energy unit is determined based on the energy regulation record corresponding to the deviation energy unit. The planned regulation power and the compensation power for other deviation energy units are separated from the actual regulation power of the compensation energy unit to obtain the additional compensation power for the deviation energy unit. Determine the additional compensation power that will still exist during the future operating period, determine the remaining regulation power based on the additional compensation power and the adjustable power of the compensation energy unit, and match it with the corresponding energy regulation demand to determine the regulation capacity gap; Based on the capacity gap, the additional compensation power is adjusted while meeting the current energy demand of the park. The released regulation power is then allocated to the corresponding energy regulation demand to generate the park's energy operation plan.

2. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, The determination of additional compensation power includes: Based on the energy regulation records corresponding to the deviation energy unit, determine the planned regulation power undertaken by the compensation energy unit before the deviation occurred, and obtain the actual regulation power of the compensation energy unit after the deviation occurred. Based on the energy regulation records of other deviation energy units after the deviation is formed and the actual regulation power change of the compensation energy unit, the actual compensation power undertaken by the compensation energy unit for other deviation energy units is determined. The planned regulation power and the compensation power for other deviation energy units are separated from the actual regulation power. The additional compensation power for deviation energy units is determined based on the regulation direction of the separated power.

3. The method for intelligent operation and management of park energy based on digital twins according to claim 2, characterized in that, The additional compensation power for the deviation energy unit is determined based on the adjustment direction of the power after stripping, including: Based on the energy regulation records of the matching compensation energy unit after the deviation occurs, determine the compensation power for other deviation energy units; The actual regulating power of the compensation energy unit is subtracted from the planned regulating power and the compensation power for other deviation energy units to obtain the compensation power to be confirmed. When the adjustment direction of the compensation power to be confirmed is opposite to the deviation direction of the actual operating power of the deviation energy unit relative to the predicted power of the digital twin, the compensation power to be confirmed is determined as the additional compensation power for the deviation energy unit.

4. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, The determination of the deviation energy unit includes: Calculate the power difference between the actual operating power of each energy unit and the digital twin predicted power at the same sampling time. The deviation judgment value is determined based on the power difference between each energy unit during normal operation; When the absolute value of the power difference at multiple consecutive sampling times of the same energy unit is greater than the deviation judgment value, and the positive and negative directions of the power difference are consistent, the energy unit is determined to be a deviation energy unit.

5. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, The determination of the compensating energy unit includes: Identify the energy units that were regulated after the deviation occurred from the energy regulation records corresponding to the deviation energy units; Compare the actual regulated power of the energy unit before and after the regulated operation to determine the direction of change in the actual regulated power. When the direction of change is opposite to the direction of deviation of the actual operating power of the deviation energy unit from the predicted power of the digital twin, and the actual adjustment power change occurs after the power deviation is formed, the energy unit that has been adjusted is identified as the compensation energy unit.

6. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, The determination of residual regulating power includes: Determine the adjustable power of the compensation energy unit after deducting the allocated planned adjustment power during the future operating period; Determine whether the additional compensation power for the deviation energy unit will still exist during the future operating period; When the additional compensation power still exists, the adjustable power is subtracted from the additional compensation power to obtain the remaining adjustable power of the compensation energy unit during the future operating period.

7. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, The determination of the adjustment capacity gap includes: Obtain the energy regulation demand corresponding to the future operating period and determine the direction of energy regulation demand adjustment; The adjustment direction of the remaining adjustment power of each compensation energy unit is compared with the adjustment direction of the energy adjustment demand, and the remaining adjustment power with the same adjustment direction and capable of covering the future operating time period is accumulated. When the accumulated remaining regulation power is less than the energy regulation demand, the power difference between the two is determined as the regulation capacity gap.

8. The method for intelligent operation and management of park energy based on digital twins according to claim 1, characterized in that, Adjustments to the additional compensation power include: Based on the current energy demand of the park, determine the allowable reduction of additional compensation power for each compensation energy unit; When the sum of the allowable reductions in additional compensation power is not less than the regulation capacity gap, determine the additional compensation power to be adjusted. Reduce the additional compensation power to be adjusted so that the released regulation power covers the regulation capacity gap, and allocate the released regulation power to the energy regulation needs of future operating periods.

9. The method for intelligent operation and management of park energy based on digital twins according to claim 8, characterized in that, The generation of the park's energy operation plan includes: Based on the future operating time period corresponding to the regulation capacity gap, determine the energy regulation demand that is consistent with the regulation direction of the released regulation power; The released regulation power is allocated to energy regulation demand, and the remaining regulation power of the compensation energy unit during future operating periods is reassessed. Based on the redefined remaining regulation power and the adjusted additional compensation power, the regulation power to be undertaken by each compensation energy unit during the future operating period is determined, and the park's energy operation plan is generated.

10. A smart energy operation and management system for industrial parks based on digital twins, characterized in that: Used to perform the method according to any one of claims 1-9.

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