An AGC / AVC method and system for aggregated control of distributed devices on the substation side

Abstract

The present invention discloses an AGC / AVC method and system for aggregated control of distributed devices on the substation side, and relates to the field of power grid control technology. It includes information acquisition: obtaining equipment information and user needs of the area to be regulated, and the equipment information includes equipment and equipment parameters. The present invention generates control standards through a set standard generation method to achieve that the operation of the power generation side equipment and the grid side equipment meets user needs, and obtains prediction results according to the target information and the changes in real-time environmental information through a set prediction method. Response information is obtained through the prediction results, and the response information is input into the target device to complete the prediction control. The voltage changes caused by emergencies can be predicted and output in advance to reduce the probability of voltage regulation lag, avoid the voltage exceeding the tolerance range of the equipment, and cause the SVG reactive compensation device to overload or the photovoltaic inverter to shut down, which is beneficial to extend the service life of the equipment and improve the user's power experience.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid control, and in particular to an AGC / AVC method and system for aggregated control of distributed devices at a substation side. Background Art

[0002] Distributed devices on the substation side refer to distributed energy equipment and control systems deployed in the distribution network substation, which are mainly used to integrate resources such as photovoltaics, energy storage, and reactive compensation devices to achieve localized rapid response and coordinated optimization of the power grid.

[0003] Patent publication number CN119674934A discloses an optimization aggregation control method and system for adjustable load resources. The method includes: analyzing the environmental status of the area to be regulated, determining the resource aggregation control deviation factor, analyzing the grid status and grid weakness characteristics of the area to be regulated, obtaining the resource aggregation control response factor, determining the resource aggregation control response priority category and response duration category of the area to be regulated, obtaining the control scale data of the area to be regulated, and judging whether it is necessary to perform load peak shifting and load power correction in the area to be regulated. The present invention solves the problem that the traditional centralized control mode is difficult to adapt to the flexibility and complexity of distributed loads, and the existing control method does not take into account the load characteristics and impact characteristics and cannot achieve precise regulation. It helps to improve the utilization rate of power generation equipment and promote efficient energy utilization. It can also smooth out fluctuations in new energy power generation and increase the access ratio of renewable energy.

[0004] The above-mentioned and similar aggregate control methods suffer from insufficient dynamic response performance. Traditional AGC / AVC relies on fixed energy storage grouping for control. When photovoltaic power generation fluctuates rapidly, for example when clouds block the sun and cause a sudden drop in photovoltaic power generation, traditional static strategies cannot dynamically adjust the synergy ratio between the inverter and energy storage, resulting in voltage regulation lag, which in turn causes the voltage to exceed the equipment tolerance range, causing the SVG reactive compensation device to overload or the inverter protection to shut down. At the power terminal, voltage fluctuations and flicker directly affect sensitive loads such as medical equipment and precision instruments, causing equipment malfunction or data loss, affecting the user's power consumption experience. This is why the present invention is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an AGC / AVC method and system for aggregated control of distributed devices on the substation side, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an AGC / AVC method for aggregated control of distributed devices at the substation side, comprising:

[0007] Information acquisition: Obtain equipment information and user needs in the area to be adjusted. Equipment information includes equipment and equipment parameters. Equipment includes power generation side equipment and grid side equipment. Obtain real-time weather information of power generation side equipment to obtain real-time environmental information.

[0008] Information processing: Acquire environmental information and operating information of past power generation equipment operations to obtain past environmental information and past operating information. Based on the past environmental information and past operating information, extract information about the time period in which fluctuations occurred from the operating information using an extraction method to obtain target information, which includes target environmental information and target operating information.

[0009] The invention is characterized by comprising:

[0010] Regulation generation: Generate regulation standards for power generation and grid-side equipment through standard generation methods. The regulation standards include economic standards, efficiency standards, and balance standards. Based on user needs and in conjunction with the regulation standards, regulation information that meets user needs is obtained.

[0011] Control output: transmits control information to power generation side equipment and grid side equipment for control;

[0012] Determine the predicted equipment: select the equipment on the power generation side to obtain the target equipment;

[0013] Predicted voltage generation: Based on target information, a prediction method is used to generate future voltage changes according to changes in real-time environmental information to obtain a prediction result. The prediction result includes the voltage change for the target device, and response information is obtained based on the prediction result;

[0014] Response output: The response information is transmitted to the target device to complete the prediction and control.

[0015] Furthermore, the prediction method includes: performing paragraph processing on the target information and real-time environmental information through a segmentation processing method to obtain comparison resources, the comparison resources include a repository, redundant change trends and real-time change trends, the repository includes paragraph environmental information and paragraph operation information with the same length as the real-time change trend, performing similarity matching with the paragraph environmental information in the repository based on the real-time change trend to obtain a matching degree, presetting a matching threshold, comparing the matching degree with the matching threshold to obtain a comparison result, extracting the target environmental information with feedback that the matching degree is greater than the matching threshold in the comparison result to obtain the to-be-selected environmental information, selecting the to-be-selected environmental information with the highest matching degree based on the to-be-selected environmental information to obtain the selected environmental information, when the number of selected environmental information is single, the selected environmental information is the final environmental information, when the number of selected environmental information is not single, selecting the most accurate selected environmental information through an exploration method based on the redundant change trend to obtain the final environmental information, extracting the target operation information corresponding to the final environmental information in the repository based on the correlation to obtain the selected operation information, and obtaining the prediction result based on the selected operation information.

[0016] Furthermore, the segmentation processing method includes: presetting time segments and redundant segments, intercepting real-time environmental information based on the time segments in combination with the redundant segments to obtain environmental change trends, extracting the part corresponding to the time segments in the environmental change trends to obtain real-time change trends, eliminating the real-time change trends in the environmental change trends to obtain redundant change trends, splitting the target information to obtain target environmental information and target operation information, segmenting the target environmental information and target operation information based on the time segments to obtain paragraph environmental information and paragraph operation information, establishing a repository for storing paragraph environmental information and paragraph operation information, establishing the correlation between paragraph environmental information and paragraph operation information, and integrating the repository, redundant change trends and real-time change trends to obtain comparison resources.

[0017] Furthermore, the exploration method includes: obtaining a selection point based on the position of the selected environmental information in the target information, intercepting environmental information with the same length as the redundant paragraph in the target environmental information based on the selection point to obtain comparative environmental information, the comparative environmental information is adjacent to the selected environmental information, performing similarity matching with the comparative environmental information based on the redundant change trend and selecting the comparative environmental information with the highest similarity to obtain the first environmental information, and determining the selected environmental information based on the relationship between the first environmental information and the selected environmental information to obtain the final environmental information.

[0018] Furthermore, the process of presetting the control standard is: determining the control bias, which includes economy, efficiency and balance, obtaining electricity price information and real-time electricity price, which includes high electricity price and low electricity price, presetting the electricity price threshold, obtaining the difference between the real-time electricity price and the low electricity price to obtain the low difference, obtaining the difference between the real-time electricity price and the high electricity price to obtain the high difference, when the real-time electricity price is less than the electricity price threshold, the grid-side equipment is charged, and the charging power of the grid-side equipment is inversely proportional to the change of the low difference, when the real-time electricity price is greater than the electricity price threshold, the grid-side equipment is discharged, and the discharge power of the grid-side equipment is inversely proportional to the change of the high difference, integrating the relationship between the charging and discharging of the grid-side equipment and the real-time electricity price to obtain the economic standard, and obtaining the efficiency standard and the balance standard through the standard generation method based on the power generation side equipment and the grid side equipment.

[0019] Furthermore, the standard generation method includes: monitoring the operating status of grid-side equipment, determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters; when there is a difference between the operating status of the grid-side equipment and the equipment parameters, extracting the equipment with the difference from the grid-side equipment to obtain specific equipment; generating an alarm message based on the specific equipment and the difference; obtaining feedback address information; and sending the alarm message to a user based on the feedback address information; integrating the process of determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters and generating the alarm message to obtain an efficiency standard; obtaining the health status and call counts of the power generation-side equipment and the grid-side equipment; grading the equipment based on the health status to obtain a grading level, wherein the grading levels include excellent, medium, and good; determining the relationship between the call counts of sub-equipment in the power generation-side equipment and the grid-side equipment and the grading level to obtain a result relationship; when the result relationship feedback indicates that the same equipment in the power generation-side equipment and the grid-side equipment has different grading levels, presetting a fixed number of times, reducing the call count by the fixed number of times for the same equipment in the grading level of good, and increasing the call count by the fixed number of times for the same equipment in the grading level of excellent; and integrating the result relationship with the process of reducing the fixed number of times and increasing the fixed number of times to obtain a balance standard.

[0020] Furthermore, the process of obtaining response information based on the prediction result is: obtaining information on how the target device previously resolved the impact of voltage changes to obtain control information, establishing a correlation between past voltage changes and control information, establishing an information library for storing control information and past voltage changes, traversing the information library based on the prediction result to obtain a traversal result, when the traversal result feedback is that there are past voltage changes corresponding to the prediction result in the information library, extracting the control information of the past voltage changes corresponding to the prediction result based on the correlation to obtain response information, when the traversal result feedback is that there are no past voltage changes corresponding to the prediction result in the information library, integrating the target device and the prediction result to obtain auxiliary information, sending the auxiliary information to the user based on the feedback address information, monitoring user feedback, and obtaining response information based on user feedback.

[0021] Furthermore, the extraction method includes: extracting voltage changes in target operation information, presetting time units and voltage thresholds, obtaining segments in which the voltage difference between adjacent time units exceeds the voltage threshold according to the time units to obtain target operation information, extracting environmental information corresponding to the target operation information from previous environmental information to obtain target environmental information, and integrating the target operation information and the target environmental information to obtain target information.

[0022] An AGC / AVC system for aggregated control of distributed devices on the substation side uses the above-mentioned AGC / AVC method for aggregated control of distributed devices on the substation side.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The AGC / AVC method and system for the aggregated control of distributed devices on the substation side generates control standards for power generation side equipment and grid side equipment through a set standard generation method, and obtains control information that meets user needs in accordance with the control standards based on user needs, so that the operation of power generation side equipment and grid side equipment meets user needs. The set prediction method predicts the voltage that the target device may be subjected to in the future according to the target information and the changes in real-time environmental information to obtain a prediction result, and response information for solving the prediction result is obtained through the prediction result. The response information is then input into the target device to complete the predictive control. Through predictive control, the voltage change caused by responding to emergencies can be predicted and output in advance to reduce the probability of voltage regulation lag, avoid the voltage exceeding the tolerance range of the equipment, and cause the SVG reactive compensation device to overload or the photovoltaic inverter to shut down due to protection, which is beneficial to extending the service life of the equipment and improving the user's power consumption experience.

[0025] At the same time, through the set exploration method, further in-depth exploration and matching are carried out when there are multiple selected environmental information to obtain more accurate final environmental information, which is conducive to improving the accuracy of the prediction results. Through the set economic standards, when the electricity price increases, the charging power of the energy storage system in the grid-side equipment is reduced, and when the electricity price decreases, the charging power of the energy storage system in the grid-side equipment is increased to improve the economy of charging and discharging. In the specific use process, when the electricity price rises to the highest point, the charging power is reduced to 0, and when the electricity price drops to the lowest point, the charging power is increased to the maximum, which is conducive to reducing costs.

[0026] At the same time, the efficiency standard focuses on the operating status of the grid-side equipment and the power generation side equipment. The equipment parameters include the normal operating status of the grid-side equipment and the power generation side equipment. By judging whether there are any abnormalities in the operating status of the grid-side equipment and the power generation side equipment, and generating alarm information and feedback to the user in time when there are abnormalities, the equipment failure can be discovered in time to improve the operating efficiency of the equipment. The balance standard focuses on the usage balance of the power generation side equipment and the grid side equipment. By obtaining the health status of the power generation side equipment and the grid side equipment, and classifying them according to the health status, and reducing and increasing the number of calls to the same equipment in the power generation side equipment and the grid side equipment according to the grade classification, the usage of the same equipment in the power generation side equipment and the grid side equipment can be ensured, so as to facilitate subsequent agreed maintenance and facilitate use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall process structure of the present invention;

[0028] Figure 2 Schematic diagram of the prediction method structure of the present invention;

[0029] Figure 3This is a structural diagram of embodiment 3 of the present invention;

[0030] Figure 4 This is a structural diagram of embodiment 4 of the present invention. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Distributed devices on the substation side (such as photovoltaics and energy storage) are characterized by spatial dispersion and large capacity differences. Traditional independent control makes it difficult to coordinate the actions of multiple devices, which can easily lead to regulation conflicts or waste of resources. Aggregate control achieves efficient integration of resources through unified optimization of instruction allocation.

[0033] like Figures 1-4 As shown, the present invention provides a technical solution: an AGC / AVC method for aggregated control of distributed devices on the substation side, comprising:

[0034] Information acquisition: Obtain equipment information and user needs in the area to be adjusted. Equipment information includes equipment and equipment parameters. Equipment includes power generation side equipment and grid side equipment. Obtain real-time weather information of power generation side equipment to obtain real-time environmental information.

[0035] It should be noted that the area to be regulated is the area where distributed energy equipment deployed in the distribution network area (i.e., the area powered by low-voltage distribution transformers) is located. The equipment information is the information of the equipment that needs to be regulated in the area to be regulated. The specific information can be obtained by the staff of the area to be regulated. The user needs are the basic regulation needs of the administrator or staff, which can be obtained by the administrator or staff. The power generation side equipment mainly includes photovoltaic power generation systems and energy storage systems. The grid side equipment mainly includes reactive power control equipment and protection and grid-connected equipment, etc. The real-time weather information of the power generation side equipment can be obtained by installing sensors, specifically the weather information that affects the power generation of the power generation side equipment.

[0036] Information processing: Acquire environmental information and operating information of past power generation equipment operations to obtain past environmental information and past operating information. Based on the past environmental information and past operating information, extract information about the time period in which fluctuations occurred from the operating information using an extraction method to obtain target information, which includes target environmental information and target operating information.

[0037] It should be noted that the past environmental information is consistent with the real-time weather information, and the past operating information is the operating information of the power generation side equipment, which can be obtained from the work log in the past operating information. The target information is obtained by extracting the information that causes fluctuations in the past environmental information and the past operating information through the set extraction method, thereby shortening the environmental information and operating information, providing a prediction basis for subsequent prediction methods.

[0038] Example 1:

[0039] Distributed energy equipment is deployed in a distribution network substation. Photovoltaic power generation equipment is the primary power generation equipment within this distribution network. Real-time environmental information for these PV systems primarily consists of irradiance and cloud movement. Cloud movement can be obtained by accessing Fengyun-4 satellite data. Real-time irradiance is obtained by installing irradiance sensors. These sensors can be thermopile pyranometers or silicon photodiode sensors. These sensors should be installed at the same inclination angle as the PV array and in an unobstructed position. Typical error ranges are ±3% (thermopile) and ±5% (silicon diode). Data output can be transmitted to a SCADA system via RS-485 / Modbus RTU. Alternatively, a new PV module with an internal micro-irradiance chip can be used to directly measure the actual irradiance received on the cell surface. Compared to the aforementioned sensors, this alternative approach eliminates installation angle errors, improves irradiance accuracy, and supports refined string-level analysis. The irradiance sensors should be operated for a period of time to collect historical environmental information about the generation-side equipment. This environmental information is irradiance, and detailed historical operating information is obtained from the operation logs of the primary power generation equipment.

[0040] The invention is characterized by comprising:

[0041] Regulation generation: Generate regulation standards for power generation and grid-side equipment through standard generation methods. The regulation standards include economic standards, efficiency standards, and balance standards. Based on user needs and in conjunction with the regulation standards, regulation information that meets user needs is obtained.

[0042] It should be noted that the control standards for power generation side equipment and grid side equipment are generated through the set standard generation method. At the same time, the control standards are coordinated according to user needs to obtain control information that meets user needs.

[0043] Control output: transmits control information to power generation side equipment and grid side equipment for control;

[0044] It should be noted that by transmitting control information to the power generation side equipment and the grid side equipment, the specific operating modes of the power generation side equipment and the grid side equipment can be adjusted so that the operation of the power generation side equipment and the grid side equipment meets user needs.

[0045] Determine the predicted equipment: select the equipment on the power generation side to obtain the target equipment;

[0046] It should be noted that the specific selection method is determined according to the actual usage situation, and the number of selections can also be determined according to the actual usage requirements. By selecting the equipment in the power generation side equipment as the target equipment, the operation of the subsequent prediction method is facilitated.

[0047] Predicted voltage generation: Based on target information, a prediction method is used to generate future voltage changes according to changes in real-time environmental information to obtain a prediction result. The prediction result includes the voltage change for the target device, and response information is obtained based on the prediction result;

[0048] Response output: The response information is transmitted to the target device to complete the prediction and control.

[0049] It should be noted that the set prediction method predicts the voltage that the target device may be subjected to in the future based on the target information and changes in real-time environmental information to obtain a prediction result. The prediction result is used to obtain response information to solve the prediction result. Then, the response information is input into the target device to complete the predictive control. Through predictive control, the voltage changes caused by emergencies can be predicted and output in advance to reduce the probability of voltage regulation lag, avoid voltage exceeding the tolerance range of the equipment, and cause overload of the SVG reactive compensation device or protection shutdown of the photovoltaic inverter, which is beneficial to extending the service life of the equipment and improving the user's power consumption experience.

[0050] Example 2:

[0051] An information transceiver node is established, and the node address is fed back to the user. The user obtains the user's needs by sending his own needs to the information transceiver node. When the information transceiver node obtains the generated control information, it can first feed back the control information to the administrator. After the administrator's review, it is sent to the corresponding control devices in the power generation side equipment and the grid side equipment. The control device adjusts the operation mode of the power generation side equipment and the grid side equipment according to the control information. At the same time, when the information transceiver node obtains the generated response information, it can also feed back the response information to the administrator. After the administrator's review, it is sent to the control device of the target device. The control device adjusts the subsequent operation of the target device. In the photovoltaic power generation equipment, the control device can be a photovoltaic inverter, so that the target device adapts to the future voltage. When the information transceiver node obtains the prediction result generated by the prediction method, the prediction result and real-time environmental information can be combined and sent to the administrator. After the administrator reviews and determines the accuracy of the prediction result, the response information is generated. By adding the administrator review stage, the accuracy of the generated information can be improved, so that the overall method can run efficiently.

[0052] like Figure 2As shown, the prediction method includes: performing paragraph processing on the target information and the real-time environment information through a segmentation processing method to obtain a comparison resource, the comparison resource includes a repository, a redundant change trend and a real-time change trend, the repository includes paragraph environment information and paragraph operation information with the same length as the real-time change trend, performing similarity matching with the paragraph environment information in the repository based on the real-time change trend to obtain a matching degree, presetting a matching threshold, comparing the matching degree with the matching threshold to obtain a comparison result, extracting the target environment information with a matching degree greater than the matching threshold in the comparison result to obtain the environment information to be selected, selecting the environment information to be selected with the highest matching degree based on the environment information to be selected to obtain the selected environment information, when the number of selected environment information is single, the selected environment information is the final environment information, when the number of selected environment information is not single, selecting the most accurate selected environment information through an exploration method based on the redundant change trend to obtain the final environment information, extracting the target operation information corresponding to the final environment information in the repository based on the correlation to obtain the selected operation information, and obtaining a prediction result based on the selected operation information.

[0053] It should be noted that the target information and real-time environmental information are segmented into information with the same length through the set segmentation processing method to obtain comparison resources. The consistent length here refers to time. Specifically, the target information and real-time environmental information are segmented into information with the same time length. The paragraph environmental information and paragraph operation information obtained by segmenting the target information are stored in the repository. Based on the real-time change trend, the similarity matching is performed with the paragraph environmental information in the repository to obtain the matching degree. This process can represent the real-time change trend and the paragraph environmental information in the function graph, and then analyze the similarity between the two by establishing a corresponding image recognition model to obtain the matching degree. The matching threshold is determined according to the actual usage. The higher the matching threshold is set, the more accurate the subsequent prediction results will be. It can be preset to 90%. When there are multiple environmental information to be selected, the most accurate selected environmental information among the multiple selected environmental information is selected through the exploration method and the redundant change trend to obtain the final environmental information, so as to improve the prediction accuracy.

[0054] Example 3:

[0055] When performing similarity matching, the real-time change trend is fed back in the function image to obtain a real-time change image, the paragraph environment information in the repository is fed back in the function image to obtain a paragraph environment image, the function line segments in the real-time change image and the paragraph environment image are extracted to obtain two line segments to be compared, and a similarity recognition model is established. The specific establishment process can be to obtain a variety of different line segments, select a deep learning model as a model matrix, select two line segments and represent the similarity as a group of sub-training data, integrate several groups of training data to obtain a training data set, import the training data set into the model matrix for model training to obtain an initial model, select multiple groups of test data and test similarity, the test data is two line segments, import the test data into the initial model to obtain test results, compare the test results and the test similarity to obtain comparison results, adjust and optimize the initial model according to the comparison results to obtain a similarity recognition model, and subsequently, in use, import the two compared line segments into the similarity recognition model to obtain the matching degree, such as Figure 3 shown.

[0056] like Figure 2 As shown, the segmentation processing method includes: presetting time segments and redundant segments, intercepting real-time environmental information based on the time segments in combination with the redundant segments to obtain environmental change trends, extracting the part corresponding to the time segments in the environmental change trends to obtain real-time change trends, eliminating the real-time change trends in the environmental change trends to obtain redundant change trends, splitting the target information to obtain target environmental information and target operation information, segmenting the target environmental information and target operation information based on the time segments to obtain paragraph environmental information and paragraph operation information, establishing a repository for storing paragraph environmental information and paragraph operation information, establishing the correlation between paragraph environmental information and paragraph operation information, and integrating the repository, redundant change trends and real-time change trends to obtain comparison resources.

[0057] It should be noted that both the time segment and the redundant segment represent time lengths, which can be 15 minutes, 18 minutes, 20 minutes, etc. The environmental change trend is obtained by intercepting real-time indirect information through specific time segments in conjunction with redundant segments. Specifically, when the time segment is 5 minutes and the redundant segment is 5 minutes, the intercepted environmental change trend is 10 minutes. The real-time change trend is the environmental change trend of the first 5 minutes of the interception, and the redundant change trend is the environmental change trend of the last 5 minutes. The two are adjacent.

[0058] Example 4:

[0059] When intercepting real-time environment information and target environment information, establish time nodes according to the time length of real-time environment information and target environment information. The specific time nodes can be every 2 minutes. Figure 4The spacing between adjacent time nodes in is the interval, that is, the time nodes include 0, 2, 4, 6, 8, etc. The target environment information under the time segment intercepted at the time node is obtained to obtain the segment environment information. The real-time environment information under the redundant segment intercepted at the time node is combined with the real-time environment information under the redundant segment to obtain the environment change trend. Then, according to the fact that the time segment is adjacent to the redundant segment and the redundant change trend under the redundant segment is located to the left of the real-time change trend under the time segment, the environment change trend is split according to the position relationship and time length to obtain the real-time change trend and the redundant change trend, such as Figure 4 shown.

[0060] like Figure 2 As shown, the exploration method includes: obtaining a selection point based on the position of the selected environmental information in the target information, intercepting environmental information with the same length as the redundant paragraph in the target environmental information based on the selection point to obtain comparative environmental information, the comparative environmental information is adjacent to the selected environmental information, performing similarity matching with the comparative environmental information based on the redundant change trend and selecting the comparative environmental information with the highest similarity to obtain the first environmental information, and determining the selected environmental information based on the relationship between the first environmental information and the selected environmental information to obtain the final environmental information.

[0061] It should be noted that the selection point is obtained based on the position of the selected environmental information in the target information. The selection point is the position where the target environmental information is generated in the target information. It can be obtained through information matching, and can also be obtained through the method of tracing the source information. The comparison environmental information is adjacent to the selected environmental information, and the comparison environmental information is on the left side of the selected environmental information. Through the set exploration method, further in-depth exploration and matching are performed when there are multiple selected environmental information to obtain more accurate final environmental information, which is conducive to improving the accuracy of the prediction results.

[0062] The process of presetting the control standard is: determining the control bias, which includes economy, efficiency and balance, obtaining electricity price information and real-time electricity price, which includes high electricity price and low electricity price, presetting the electricity price threshold, obtaining the difference between the real-time electricity price and the low electricity price to obtain the low difference, obtaining the difference between the real-time electricity price and the high electricity price to obtain the high difference, when the real-time electricity price is less than the electricity price threshold, the grid-side equipment is charged, and the charging power of the grid-side equipment is inversely proportional to the change of the low difference, when the real-time electricity price is greater than the electricity price threshold, the grid-side equipment is discharged, and the discharge power of the grid-side equipment is inversely proportional to the change of the high difference, integrating the relationship between the charging and discharging of the grid-side equipment and the real-time electricity price to obtain the economic standard, and obtaining the efficiency standard and the balance standard through the standard generation method based on the power generation side equipment and the grid side equipment.

[0063] It should be noted that the electricity price information is the daily change information of the electricity price, the real-time electricity price is the real-time electricity price, the high electricity price point is the highest point of the electricity price, and the low electricity price point is the lowest point of the electricity price. The electricity price threshold is set according to the actual usage. Specifically, the average daily electricity price can be selected. By setting the economic standard, when the electricity price rises, the charging power of the energy storage system in the grid-side equipment is reduced, and when the electricity price drops, the charging power of the energy storage system in the grid-side equipment is increased to improve the economy of charging and discharging. In the specific use process, when the electricity price rises to the highest point, the charging power is reduced to 0, and when the electricity price drops to the lowest point, the charging power is increased to the maximum, which is conducive to reducing costs.

[0064] The standard generation method includes: monitoring the operating status of grid-side equipment, determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters; when there is a difference between the operating status of the grid-side equipment and the equipment parameters, extracting the equipment with the difference from the grid-side equipment to obtain specific equipment; generating alarm information based on the specific equipment and the difference; obtaining feedback address information; and sending the alarm information to a user based on the feedback address information; integrating the process of determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters and generating the alarm information to obtain an efficiency standard; obtaining the health status and call count of the power generation side equipment and the grid side equipment; grading the equipment based on the health status to obtain a grading level, wherein the grading level includes an excellent level, a medium level, and a good level; determining the relationship between the call count of sub-equipment in the power generation side equipment and the grid side equipment and the grading level to obtain a result relationship; when the result relationship feedback indicates that the same equipment in the power generation side equipment and the grid side equipment has different grading levels, presetting a fixed number of calls, reducing the fixed number of calls for the same equipment in the good level grading level, and increasing the fixed number of calls for the same equipment in the excellent level grading level; and integrating the result relationship with the process of reducing the fixed number of calls and increasing the fixed number of calls to obtain a balance standard.

[0065] It should be noted that the efficiency standard focuses on the operating status of the grid-side equipment and the power generation side equipment. The equipment parameters include the normal operating status of the grid-side equipment and the power generation side equipment. By judging whether there are any abnormalities in the operating status of the grid-side equipment and the power generation side equipment, and generating alarm information and feedback to the user in time when there are abnormalities, the equipment failure can be discovered in time to improve the operating efficiency of the equipment. The balance standard focuses on the usage balance of the power generation side equipment and the grid side equipment. By obtaining the health status of the power generation side equipment and the grid side equipment, and classifying them according to the health status, and reducing and increasing the number of calls to the same equipment in the power generation side equipment and the grid side equipment according to the grade classification, the usage of the same equipment in the power generation side equipment and the grid side equipment can be ensured, so as to facilitate subsequent agreed maintenance and facilitate use.

[0066] The process of obtaining response information based on the prediction result is as follows: obtaining information on how the target device previously resolved the impact of voltage changes to obtain control information, establishing a correlation between past voltage changes and control information, establishing an information library for storing control information and past voltage changes, traversing the information library based on the prediction result to obtain a traversal result, when the traversal result feedback indicates that there are past voltage changes corresponding to the prediction result in the information library, extracting the control information of the past voltage changes corresponding to the prediction result based on the correlation to obtain response information, when the traversal result feedback indicates that there are no past voltage changes corresponding to the prediction result in the information library, integrating the target device and the prediction result to obtain auxiliary information, sending the auxiliary information to the user based on the feedback address information, monitoring user feedback, and obtaining response information based on user feedback.

[0067] It should be noted that the process of obtaining control information by obtaining information on how the target device previously solved the impact of voltage changes can be achieved by feeding back the target device's information on how to solve the impact of voltage changes to the technician, who then adds the control information. It can also be obtained through the target device's previous operating information and searches on the Internet.

[0068] The extraction method includes: extracting voltage changes in target operation information, presetting time units and voltage thresholds, obtaining segments where the voltage difference between adjacent time units exceeds the voltage threshold according to the time units to obtain target operation information, extracting environmental information corresponding to the target operation information from previous environmental information to obtain target environmental information, and integrating the target operation information and the target environmental information to obtain target information.

[0069] It should be noted that the time unit and the voltage threshold are preset according to actual usage. The specific time unit can be 5 minutes. Specifically, the target operation information is obtained by obtaining the sections in which the voltage difference of adjacent time units exceeds the voltage threshold according to the time unit. For example, when the difference between the voltage at the 5th minute and the voltage at the 10th minute exceeds the voltage threshold, the operation information of the section is extracted to obtain the target operation information, and the target environment information is extracted according to the target operation information to obtain the target environment information.

[0070] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is limited by the accompanying embodiments and their equivalents.

Claims

1. An AGC / AVC method for aggregated control of distributed devices at the substation side, comprising: Information acquisition: Obtain equipment information and user needs in the area to be adjusted. Equipment information includes equipment and equipment parameters. Equipment includes power generation side equipment and grid side equipment. Obtain real-time weather information of power generation side equipment to obtain real-time environmental information. Information processing: Acquire environmental information and operating information of past power generation equipment operations to obtain past environmental information and past operating information. Based on the past environmental information and past operating information, extract information about the time period in which fluctuations occurred from the operating information using an extraction method to obtain target information, which includes target environmental information and target operating information. The invention is characterized by comprising: Regulation generation: Generate regulation standards for power generation and grid-side equipment through standard generation methods. The regulation standards include economic standards, efficiency standards, and balance standards. Based on user needs and in conjunction with the regulation standards, regulation information that meets user needs is obtained. Control output: transmits control information to power generation side equipment and grid side equipment for control; Determine the predicted equipment: select the equipment on the power generation side to obtain the target equipment; Predicted voltage generation: Based on target information, a prediction method is used to generate future voltage changes according to changes in real-time environmental information to obtain a prediction result. The prediction result includes the voltage change for the target device, and response information is obtained based on the prediction result; Response output: Transmit response information to the target device to complete predictive control; The process of obtaining response information based on the prediction result is as follows: obtaining information on how the target device previously resolved the impact of voltage changes to obtain control information, establishing a correlation between past voltage changes and control information, establishing an information library for storing control information and past voltage changes, traversing the information library based on the prediction result to obtain a traversal result, when the traversal result feedback indicates that there are past voltage changes corresponding to the prediction result in the information library, extracting the control information of the past voltage changes corresponding to the prediction result based on the correlation to obtain response information, when the traversal result feedback indicates that there are no past voltage changes corresponding to the prediction result in the information library, integrating the target device and the prediction result to obtain auxiliary information, sending the auxiliary information to the user based on the feedback address information, monitoring user feedback, and obtaining response information based on user feedback.

2. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 1, characterized in that: The prediction method includes: performing paragraph processing on the target information and the real-time environment information through a segmentation processing method to obtain a comparison resource, the comparison resource includes a repository, a redundant change trend and a real-time change trend, the repository includes paragraph environment information and paragraph operation information with the same length as the real-time change trend, performing similarity matching with the paragraph environment information in the repository based on the real-time change trend to obtain a matching degree, presetting a matching threshold, comparing the matching degree with the matching threshold to obtain a comparison result, extracting the target environment information with feedback that the matching degree is greater than the matching threshold in the comparison result to obtain the environment information to be selected, selecting the environment information to be selected with the highest matching degree based on the environment information to be selected to obtain the selected environment information, when the number of selected environment information is single, the selected environment information is the final environment information, when the number of selected environment information is not single, selecting the most accurate selected environment information through an exploration method based on the redundant change trend to obtain the final environment information, extracting the target operation information corresponding to the final environment information in the repository based on the correlation to obtain the selected operation information, and obtaining a prediction result based on the selected operation information.

3. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 2, characterized in that: The segmentation processing method includes: presetting time segments and redundant segments, intercepting real-time environmental information based on the time segments in combination with the redundant segments to obtain environmental change trends, extracting the part corresponding to the time segments from the environmental change trends to obtain real-time change trends, eliminating the real-time change trends from the environmental change trends to obtain redundant change trends, splitting target information to obtain target environmental information and target operation information, segmenting the target environmental information and target operation information based on the time segments to obtain segment environmental information and segment operation information, establishing a repository for storing segment environmental information and segment operation information, establishing the correlation between the segment environmental information and the segment operation information, and integrating the repository, redundant change trends, and real-time change trends to obtain comparison resources.

4. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 2, characterized in that: The exploration method includes: obtaining a selection point based on the position of the selected environmental information in the target information, intercepting environmental information with the same length as the redundant paragraph in the target environmental information based on the selection point to obtain comparative environmental information, the comparative environmental information is adjacent to the selected environmental information, performing similarity matching with the comparative environmental information based on the redundant change trend and selecting the comparative environmental information with the highest similarity to obtain the first environmental information, and determining the selected environmental information based on the relationship between the first environmental information and the selected environmental information to obtain the final environmental information.

5. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 1, characterized in that: The process of presetting the control standard is: determining the control bias, which includes economy, efficiency and balance, obtaining electricity price information and real-time electricity price, which includes high electricity price and low electricity price, presetting the electricity price threshold, obtaining the difference between the real-time electricity price and the low electricity price to obtain the low difference, obtaining the difference between the real-time electricity price and the high electricity price to obtain the high difference, when the real-time electricity price is less than the electricity price threshold, the grid-side equipment is charged, and the charging power of the grid-side equipment is inversely proportional to the change of the low difference, when the real-time electricity price is greater than the electricity price threshold, the grid-side equipment is discharged, and the discharge power of the grid-side equipment is inversely proportional to the change of the high difference, integrating the relationship between the charging and discharging of the grid-side equipment and the real-time electricity price to obtain the economic standard, and obtaining the efficiency standard and the balance standard through the standard generation method based on the power generation side equipment and the grid side equipment.

6. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 5, characterized in that: The standard generation method includes: monitoring the operating status of grid-side equipment, determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters; when there is a difference between the operating status of the grid-side equipment and the equipment parameters, extracting the equipment with the difference from the grid-side equipment to obtain specific equipment; generating alarm information based on the specific equipment and the difference; obtaining feedback address information; and sending the alarm information to a user based on the feedback address information; integrating the process of determining whether there is a difference between the operating status of the grid-side equipment and the equipment parameters and generating the alarm information to obtain an efficiency standard; obtaining the health status and call count of the power generation side equipment and the grid side equipment; grading the equipment based on the health status to obtain a grading level, wherein the grading level includes an excellent level, a medium level, and a good level; determining the relationship between the call count of sub-equipment in the power generation side equipment and the grid side equipment and the grading level to obtain a result relationship; when the result relationship feedback indicates that the same equipment in the power generation side equipment and the grid side equipment has different grading levels, presetting a fixed number of times, reducing the fixed number of times for the same equipment in the grading level of the good level, and increasing the fixed number of times for the same equipment in the grading level of the excellent level; and integrating the result relationship with the process of reducing the fixed number of times and increasing the fixed number of times to obtain a balance standard.

7. The AGC / AVC method for aggregated control of distributed devices at the substation side according to claim 1, characterized in that: The extraction method includes: extracting voltage changes in target operation information, presetting time units and voltage thresholds, obtaining sections in which voltage differences between adjacent time units exceed the voltage threshold based on the time units to obtain target operation information, extracting environmental information corresponding to the target operation information from previous environmental information to obtain target environmental information, and integrating the target operation information and the target environmental information to obtain target information.

8. An AGC / AVC system for aggregated control of distributed devices at the substation side, characterized by: An AGC / AVC method for aggregated control of distributed devices on the substation side as described in any one of claims 1-7 is used.

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