AGC / AVC method and system for aggregation regulation and control of transformer area side distributed devices

Abstract

The invention discloses an AGC / AVC (Automatic Gain Control / Automatic Voltage Control) method and an AGC / AVC system for aggregation regulation and control of transformer area side distributed devices, and relates to the technical field of power grid regulation and control. Comprising the steps of information acquisition: acquiring equipment information and user requirements of a to-be-adjusted area, wherein the equipment information comprises equipment and equipment parameters; the regulation and control standard is generated through the set standard generation method, so that the operation of the power generation side equipment and the power grid side equipment meets the user requirements, the prediction result is obtained through the set prediction method according to the target information in cooperation with the change of the real-time environment information, and the response information is obtained through the prediction result. And the response information is input into the target equipment to complete predictive regulation and control, so that the voltage change generated for dealing with an emergency can be predicted and output in advance, the probability of voltage regulation lag is reduced, the voltage is prevented from exceeding the tolerance range of the equipment, overload of an SVG reactive power compensation device or protection shutdown of a photovoltaic inverter is avoided, and the service life of the SVG reactive power compensation device is prolonged. The service life of equipment is prolonged; and the power utilization experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid regulation and control, and particularly to an AGC / AVC method and system for aggregated regulation and control of distributed devices on the substation side. Background Technique

[0002] Distributed devices on the substation side refer to distributed energy equipment and regulation and control systems deployed in the distribution network substation area, mainly used to integrate resources such as photovoltaic, energy storage, and reactive power compensation devices to achieve local rapid response and grid collaborative optimization.

[0003] An optimization aggregation regulation and control method and system for adjustable load resources with a patent publication number of CN119674934A. The method includes: analyzing the environmental state of the area to be regulated to determine the resource aggregation regulation deviation factor, analyzing the grid state and grid weakness characteristics of the area to be regulated to obtain the resource aggregation regulation response factor, determining the resource aggregation regulation response priority category and response duration category of the area to be regulated, obtaining the regulation scale data of the area to be regulated, and judging whether it is necessary to perform load peak shifting and load power correction on the area to be regulated. The present invention solves the problem that the traditional centralized regulation mode is difficult to adapt to the flexibility and complexity of distributed loads, and the existing regulation methods do not adequately consider the load characteristics and influence characteristics, making it impossible to achieve precise regulation. It helps to improve the utilization rate of power generation equipment and promote the efficient use of energy. It can also smooth the fluctuations of new energy power generation and increase the access proportion of renewable energy.

[0004] The aggregation regulation and control methods based on the above and similar principles have the drawback of insufficient dynamic response performance. Traditional AGC / AVC relies on fixed energy storage grouping regulation. When photovoltaic power generation fluctuates rapidly, for example, when the photovoltaic power generation power drops suddenly due to cloud cover blocking the sun, the traditional static strategy cannot dynamically adjust the coordination ratio of the inverter and the energy storage, resulting in voltage regulation lag, which in turn causes the voltage to exceed the equipment tolerance range, leading to overload of the SVG reactive power compensation device or protection shutdown of the inverter. At the power consumption terminal, voltage fluctuations and flicker directly affect sensitive load instruments such as medical equipment and precision instruments, resulting in equipment malfunction or data loss, affecting the user's power consumption experience. Therefore, 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 regulation and control of distributed devices on the substation side to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An AGC / AVC method for aggregated regulation and control of distributed devices on the substation side, including:

[0007] Information acquisition: Obtain the device information and user requirements of the area to be adjusted. The device information includes devices and device parameters. The devices include power generation side devices and grid side devices. Obtain the real-time weather information of the power generation side devices to get the real-time environmental information;

[0008] Information processing: Obtain the environmental information and operation information of the past operation of the power generation side devices to get the past environmental information and past operation information. Based on the past environmental information and past operation information, extract the information of the time period with fluctuations in the operation information through an extraction method to get the target information. The target information includes target environmental information and target operation information;

[0009] It is characterized by including:

[0010] Regulation generation: Generate the regulation standards for the power generation side devices and grid side devices through a standard generation method. The regulation standards include economic standards, efficiency standards, and balance standards. Based on the user requirements and in cooperation with the regulation standards, obtain the regulation information that meets the user requirements;

[0011] Regulation output: Transmit the regulation information to the power generation side devices and grid side devices for regulation;

[0012] Prediction device determination: Select a device from the power generation side devices to get the target device;

[0013] Predicted voltage generation: Based on the target information, through a prediction method, generate the future voltage change according to the change of the real-time environmental information to get the prediction result. The prediction result includes the voltage change of the target device. Based on the prediction result, obtain the response information;

[0014] Response output: Transmit the response information to the target device to complete the prediction regulation.

[0015] Furthermore, the prediction method includes: Perform paragraph processing on the target information and real-time environmental information through a segmented processing method to get the comparison information. The comparison information includes a repository, a redundant change trend, and a real-time change trend. The repository includes paragraph environmental information and paragraph operation information with the same length as the real-time change trend. Based on the real-time change trend, perform similarity matching with the paragraph environmental information in the repository to get the matching degree. Preset the matching threshold, compare the matching degree with the matching threshold to get the comparison result. Extract the target environmental information with a feedback that the matching degree is greater than the matching threshold in the comparison result to get the to-be-selected environmental information. Based on the to-be-selected environmental information, select the to-be-selected environmental information with the highest matching degree to get 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, based on the redundant change trend, select the most accurate selected environmental information through an exploration method to get the final environmental information. Based on the relevance, extract the target operation information corresponding to the final environmental information in the repository to get the selected operation information. Based on the selected operation information, get the prediction result.

[0016] Furthermore, the segmentation processing method includes: presetting time periods and redundant paragraphs, intercepting real-time environmental information based on the time periods combined with the redundant paragraphs to obtain an environmental change trend, extracting the part corresponding to the time periods from the environmental change trend to obtain a real-time change trend, removing the real-time change trend from the environmental change trend to obtain a redundant change trend, splitting the target information into target environmental information and target operation information, segmenting the target environmental information and target operation information based on the time periods to obtain paragraph environmental information and paragraph operation information, establishing a repository for storing the paragraph environmental information and paragraph operation information, establishing the relevance between the paragraph environmental information and the paragraph operation information, and integrating the repository, the redundant change trend, and the real-time change trend to obtain comparison information.

[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 from the target environmental information based on the selection point to obtain comparison environmental information, the comparison environmental information being adjacent to the selected environmental information, performing similarity matching between the redundant change trend and the comparison environmental information and selecting the comparison 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 regulation standard is as follows: determining the regulation bias, where the regulation bias includes economy, efficiency, and balance, obtaining electricity price information and real-time electricity price, the electricity price information including electricity price highs and lows, presetting an electricity price threshold, obtaining the difference between the real-time electricity price and the electricity price low to obtain a low difference, obtaining the difference between the real-time electricity price and the electricity price high to obtain a high difference, when the real-time electricity price is less than the electricity price threshold, the grid-side equipment charges, and the charging power of the grid-side equipment is inversely proportional to the change in the low difference, when the real-time electricity price is greater than the electricity price threshold, the grid-side equipment discharges, and the discharging power of the grid-side equipment is inversely proportional to the change in the high difference, integrating the relationship between the charging and discharging of the grid-side equipment and the real-time electricity price to obtain an economic standard, and obtaining an efficiency standard and a balance standard based on the power generation-side equipment and the grid-side equipment through a standard generation method.

[0019] Furthermore, the standard generation method includes: monitoring the operating status of grid-side devices, determining whether there are differences between the operating status of grid-side devices and device parameters, when there are differences between the operating status of grid-side devices and device parameters, extracting the devices with differences in grid-side devices to obtain specific devices, generating alarm information based on the specific devices and differences, obtaining feedback address information, sending the alarm information to users based on the feedback address information, integrating the process of determining whether there are differences between the operating status of grid-side devices and device parameters and generating alarm information to obtain an efficiency standard, obtaining the health status and call times of power generation-side devices and grid-side devices, grading based on the health status to obtain grading levels, the grading levels include excellent level, medium level, and good level, determining the relationship between the call times of sub-devices in power generation-side devices and grid-side devices and the grading levels they belong to to obtain a result relationship, when the result relationship feedbacks that the same devices in power generation-side devices and grid-side devices have different grading levels, presetting a fixed number of times, reducing the fixed number of times for the call times when the grading level of the same device is at the good level, and increasing the fixed number of times for the call times when the grading level of the same device is at the excellent level, integrating the process of the result relationship, 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 control information for the past target device to solve the influence of voltage change to obtain control information, establishing the 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 feedbacks that there is a past voltage change corresponding to the prediction result in the information library, extracting the control information of the past voltage change corresponding to the prediction result based on the correlation to obtain response information, when the traversal result feedbacks that there is no past voltage change 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 users based on the feedback address information, listening to user feedback, and obtaining response information according to user feedback.

[0021] Furthermore, the extraction method includes: extracting voltage changes in the target operation information, presetting a time unit and a voltage threshold, obtaining paragraphs where the voltage difference between adjacent time units exceeds the voltage threshold according to the time unit to obtain the target operation information, extracting the environmental information corresponding to the target operation information from the past environmental information to obtain the target environmental information, and integrating the target operation information and the target environmental information to obtain the target information.

[0022] An AGC / AVC system for aggregating and regulating distributed devices on the substation side uses the above-mentioned AGC / AVC method for aggregating and regulating distributed devices on the substation side.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The AGC / AVC method and system for aggregating and regulating distributed devices on the substation side generate regulation standards for power generation side devices and grid side devices through the set standard generation method, and obtain regulation information that meets user requirements in combination with the regulation standards according to user needs, so as to make the operation of power generation side devices and grid side devices meet user requirements. Through the set prediction method, the voltage that the target device may be affected in the future is predicted according to the target information in combination with the change of real-time environmental information to obtain a prediction result. The response information for solving the prediction result is obtained through the prediction result, and then the prediction regulation is completed by inputting the response information into the target device. Through the prediction regulation, the voltage change caused by sudden situations can be predicted and output in advance, so as to reduce the probability of voltage regulation lag and avoid the voltage exceeding the equipment tolerance range, causing overload of the SVG reactive power 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.

[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 beneficial to improving the accuracy of the prediction result. Through the set economic standard, when the electricity price rises, the charging power of the energy storage system in the grid side device is reduced, and when the electricity price drops, the charging power of the energy storage system in the grid side device is increased to improve the economy of charge and discharge. 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 beneficial to reducing costs.

[0026] At the same time, the efficiency standard focuses on the operating status of grid side devices and power generation side devices. The device parameters include the normal operating status of grid side devices and power generation side devices. By judging whether there are abnormalities in the operating status of grid side devices and power generation side devices and generating alarm information in a timely manner and feeding it back to the user when there are abnormalities, the faults of the devices can be discovered in time to improve the operating efficiency of the devices. The balance standard focuses on the usage balance degree of power generation side devices and grid side devices. By obtaining the health status of power generation side devices and grid side devices, classifying them according to the health status, and correspondingly reducing and increasing the call times of the same devices in power generation side devices and grid side devices according to the classification, the usage degree of the same devices in power generation side devices and grid side devices can be ensured, so as to facilitate subsequent unified maintenance and is beneficial to use. Description of the Drawings

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

[0028] Figure 2 It is a schematic diagram of the prediction method structure of the present invention;

[0029] Figure 3Schematic diagram of the third embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the fourth embodiment of the present invention. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The distributed devices (such as photovoltaic and energy storage) on the substation side are characterized by spatial dispersion and large capacity differences. Traditional independent control is difficult to coordinate the actions of multiple devices, which easily leads to adjustment conflicts or resource waste. Aggregate regulation realizes the efficient integration of resources through unified optimization instruction distribution.

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

[0034] Information acquisition: Obtain device information and user requirements of the area to be adjusted. The device information includes devices and device parameters. The devices include power generation side devices and grid side devices. Obtain the real-time weather information of the power generation side devices to obtain real-time environmental information;

[0035] It should be noted that the area to be adjusted is the area where distributed energy devices are deployed in the distribution network substation area (i.e., the area powered by a low-voltage distribution transformer). The device information is the information of the devices that need to be regulated in the area to be adjusted. The specific information can be obtained by the staff in the area to be adjusted. The user requirements are the basic regulation requirements of the administrator or staff, which can be specifically obtained by the administrator or staff. The power generation side devices mainly include photovoltaic power generation systems and energy storage systems. The grid side devices mainly include reactive power control terminal devices and protection and grid connection devices, etc. The real-time weather information of the power generation side devices can be obtained by installing sensors, specifically the weather information that affects the power generation of the power generation side devices.

[0036] Information processing: Obtain the environmental information and operation information of the past operation of the power generation side devices to obtain past environmental information and past operation information. Based on the past environmental information and past operation information, extract the information of the time period with fluctuations in the operation information through an extraction method to obtain target information. The target information includes target environmental information and target operation information;

[0037] It should be noted that the past environmental information is consistent with the real-time weather information. The past operation information is the operation information of the power generation side equipment, which can be obtained from the work log in the past operation information. By using the set extraction method, the information with fluctuations is extracted from the past environmental information and the past operation information to obtain the target information. Then, the environmental information and the operation information can be shortened, providing a prediction basis for the subsequent prediction method.

[0038] Embodiment 1:

[0039] Distributed energy equipment is deployed in a certain distribution network substation area. In this distribution network substation area, photovoltaic power generation equipment is used as the main power generation equipment. At this time, the real-time environmental information of the photovoltaic power generation equipment is mainly irradiance and cloud movement trajectory. The cloud movement trajectory can be obtained by accessing the Fengyun-4 satellite data. The specific real-time irradiance is obtained by installing irradiance sensors. The specific device types can be thermopile pyranometers and silicon photodiode sensors. The installation position is installed at the same inclination angle as the photovoltaic array without obstruction. The typical error range is ±3% (thermopile) and ±5% (silicon diode). The data output can be transmitted to the SCADA system through the RS-485 / Modbus RTU protocol. At the same time, an alternative method can also be selected, that is, a new type of photovoltaic module with a built-in micro-irradiance chip is used to directly measure the actual irradiance received on the surface of the battery chip. Compared with the above sensors, the advantage of this alternative solution is that it can eliminate the installation angle error, improve the accuracy of irradiance acquisition, and support string-level refined analysis. The above irradiance acquisition sensors should obtain the environmental information of the past operation of the power generation side equipment after running for a period of time. The environmental information is irradiance, and the specific past operation information is obtained from the operation log of the main power generation equipment.

[0040] It is characterized by including:

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

[0042] It should be noted that the regulation standards for the power generation side equipment and the grid side equipment are generated through the set standard generation method. At the same time, the regulation information that meets the user's needs is obtained according to the user's needs in combination with the regulation standards.

[0043] Regulation output: Transmit the regulation information to the power generation side equipment and the grid side equipment for regulation;

[0044] It should be noted that by transmitting the regulation information to the power generation side equipment and the grid side equipment, the specific operation modes of the power generation side equipment and the grid side equipment can be adjusted to make the operation of the power generation side equipment and the grid side equipment meet the user's needs.

[0045] The prediction device determines: select devices from the power generation side devices to obtain target devices;

[0046] It should be noted that the specific selection method is determined according to the actual usage situation, and the number of selected devices can also be determined according to the actual usage requirements. By selecting devices from the power generation side devices as target devices, it is convenient for the subsequent operation of the prediction method.

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

[0048] Response output: Deliver the response information to the target device to complete the prediction regulation.

[0049] It should be noted that through the set prediction method, according to the target information and in coordination with the changes in real-time environmental information, predict the possible voltage that the future target device may be affected to obtain a prediction result. Through the prediction result, obtain response information to solve the prediction result, and then complete the prediction regulation by inputting the response information into the target device. Through the prediction regulation, it is possible to predict in advance and output the voltage changes caused by emergencies, so as to reduce the probability of voltage regulation lag, avoid the voltage exceeding the equipment tolerance range, cause overload of the SVG reactive power compensation device or protection shutdown of the photovoltaic inverter, and is conducive to extending the service life of the equipment and improving the user's power consumption experience.

[0050] Embodiment 2:

[0051] Establish an information transceiver node, feedback the address of the node to the user. The user obtains the user's demand by sending their own demand to the information transceiver node. When the information transceiver node obtains the generated regulation information, it can first feedback the regulation information to the administrator. After being reviewed by the administrator, it is sent to the corresponding control devices in the power generation side devices and the grid side devices. The control devices adjust the operation modes of the power generation side devices and the grid side devices according to the regulation information. At the same time, when the information transceiver node obtains the generated response information, it can also feedback the response information to the administrator. After being reviewed by the administrator, 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 device, 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, it can combine the prediction result and the real-time environmental information and send it to the administrator. After the administrator reviews and judges the accuracy of the prediction result, response information is generated. By adding the administrator review stage, the accuracy of the generated information can be improved, so as to facilitate the overall efficient operation of the method.

[0052] Such as Figure 2As shown, the prediction method includes: performing paragraphing processing on the target information and real-time environment information through a paragraphing processing method to obtain comparison information. The comparison information includes a repository, a redundancy 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. Based on the real-time change trend, similarity matching is performed with the paragraph environment information in the repository to obtain a matching degree. A preset matching threshold is set, and the matching degree is compared with the matching threshold to obtain a comparison result. The target environment information with a feedback that the matching degree is greater than the matching threshold in the comparison result is extracted to obtain the environment information to be selected. Based on the environment information to be selected, the environment information to be selected with the highest matching degree is 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, the most accurate selected environment information is selected based on the redundancy change trend through an exploration method to obtain the final environment information. Based on the relevance, the target operation information corresponding to the final environment information is extracted from the repository to obtain the selected operation information. Based on the selected operation information, a prediction result is obtained.

[0053] It should be noted that the target information and real-time environment information are segmented through the set paragraphing processing method into information with the same length to obtain comparison information. Here, the same length refers to time, specifically, the target information and real-time environment information are segmented into information within the same time length. The repository stores the paragraph environment information and paragraph operation information obtained by segmenting the target information. In the process of obtaining the matching degree by performing similarity matching between the real-time change trend and the paragraph environment information in the repository, the real-time change trend and the paragraph environment information can be represented in a function image, and then the similarity between the two is analyzed through a corresponding image recognition model to obtain the matching degree. The matching threshold is formulated according to the actual usage situation. The higher the set matching threshold, the more accurate the subsequent prediction result. Specifically, it can be preset to 90%. When there are multiple pieces of environment information to be selected, the most accurate selected environment information among the multiple pieces of selected environment information is selected through an exploration method in cooperation with the redundancy change trend to obtain the final environment information, so as to improve the prediction accuracy.

[0054] Embodiment III:

[0055] When performing similarity matching, the real-time change trend is reflected in the function image to obtain the real-time change image, and the paragraph environment information in the repository is reflected in the function image to obtain the 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. 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 the model matrix, select two line segments and represent the similarity as a set of sub-training data, integrate several sets of training data to obtain a training data set, import the training data set into the model matrix for the model to train to obtain an initial model, select multiple sets of test data and test similarities. The test data are two line segments. The test data are imported into the initial model to obtain a test result. The test result is compared with the test similarity to obtain a comparison result. The initial model is adjusted and optimized according to the comparison result to obtain a similarity recognition model. In the subsequent use process, the two line segments to be compared are imported into the similarity recognition model to obtain a matching degree, such as Figure 3 shown.

[0056] As Figure 2 shown, the segmented processing method includes: presetting a time period paragraph and a redundant paragraph, intercepting the real-time environment information based on the time period paragraph combined with the redundant paragraph to obtain the environmental change trend, extracting the part corresponding to the time period paragraph from the environmental change trend to obtain the real-time change trend, removing the real-time change trend from the environmental change trend to obtain the redundant change trend, splitting the target information to obtain the target environmental information and the target operation information, segmenting the target environmental information and the target operation information based on the time period paragraph to obtain the paragraph environmental information and the paragraph operation information, establishing a repository for storing the paragraph environmental information and the paragraph operation information, establishing the relevance between the paragraph environmental information and the paragraph operation information, and integrating the repository, the redundant change trend and the real-time change trend to obtain the comparison information.

[0057] It should be noted that both the time period paragraph and the redundant paragraph represent the time length, specifically, it can be 15 minutes, 18 minutes, 20 minutes, etc. The real-time indirect information is intercepted through the specific time period paragraph combined with the redundant paragraph to obtain the environmental change trend. Specifically, when the time period paragraph is 5 minutes and the redundant paragraph 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 the real-time environment information and the target environmental information, time nodes are established according to the time lengths of the real-time environment information and the target environmental information. The specific time nodes can be every 2 minutes, Figure 4The interval between adjacent time nodes in [[]] is the interval. That is, the time nodes include 0, 2, 4, 6, 8, etc. The paragraph environment information is obtained based on the target environment information intercepted in the time period at the time node. The environmental change trend is obtained based on the real-time environment information intercepted in the time period at the time node and the redundant segment. Then, since the time period paragraph is adjacent to the redundant paragraph, and the redundant change trend of the redundant segment is on the left side of the real-time change trend of the time period segment, the environmental change trend is split according to the positional relationship and time length to obtain the real-time change trend and the redundant change trend, as Figure 4 shown.

[0060] As Figure 2 shown, the exploration method includes: obtaining the selection point based on the position of the selected environment information in the target information, intercepting the environment information with the same length as the redundant paragraph in the target environment information based on the selection point to obtain the comparison environment information. The comparison environment information is adjacent to the selected environment information. Based on the redundant change trend and the comparison environment information, similarity matching is performed, and the comparison environment information with the highest similarity is selected to obtain the first environment information. Based on the relationship between the first environment information and the selected environment information, the selected environment information is determined to obtain the final environment information.

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

[0062] The process of presetting the control standard is as follows: determining the control bias, where the control bias includes economy, efficiency, and balance. Obtaining the electricity price information and the real-time electricity price. The electricity price information includes the high electricity price point and the low electricity price point. Presetting the electricity price threshold. Obtaining the difference between the real-time electricity price and the low electricity price point to get the low difference. Obtaining the difference between the real-time electricity price and the high electricity price point to get the high difference. When the real-time electricity price is less than the electricity price threshold, the grid-side equipment charges, 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 discharges, and the discharging 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. Based on the power generation side equipment and the grid-side equipment, the efficiency standard and the balance standard are obtained through the standard generation method.

[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 quantity price. The high point of the electricity price is the highest point of the electricity quantity price, and the low point of the electricity price is the lowest point of the electricity quantity price. The electricity price threshold is set according to the actual usage. Specifically, the average value of the daily electricity price can be selected. Through the set economic criteria, 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 usage 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 beneficial to cost reduction.

[0064] The standard generation method includes: monitoring the operating status of grid-side equipment, judging whether there are differences between the operating status of grid-side equipment and equipment parameters. When there are differences between the operating status of grid-side equipment and equipment parameters, extracting the equipment with differences in grid-side equipment to obtain specific equipment, generating an alarm message based on the specific equipment and the differences, obtaining feedback address information, and sending the alarm message to the user based on the feedback address information. Integrating the process of judging whether there are differences between the operating status of grid-side equipment and equipment parameters and generating an alarm message to obtain an efficiency standard. Obtaining the health status and call times of power generation-side equipment and grid-side equipment, grading based on the health status to obtain grading levels. The grading levels include excellent level, medium level, and good level. Judging the relationship between the call times of sub-equipment in power generation-side equipment and grid-side equipment and the grading levels they belong to to obtain a result relationship. When the result relationship feedback shows that the same equipment in power generation-side equipment and grid-side equipment has different grading levels, preset a fixed number of times, reducing the fixed number of times for the call times when the grading level of the same equipment is at the good level, and increasing the fixed number of times for the call times when the grading level of the same equipment is at the excellent level. Integrating the result relationship, reducing the fixed number of times, and increasing the fixed number of times to obtain a balance standard.

[0065] It should be noted that the efficiency standard focuses on the operating status of grid-side equipment and power generation-side equipment. The equipment parameters include the normal operating status of grid-side equipment and power generation-side equipment. By judging whether there are abnormalities in the operating status of grid-side equipment and power generation-side equipment and generating an alarm message in a timely manner when there are abnormalities and feedbacking it to the user, the faults of the equipment can be discovered in time to improve the operating efficiency of the equipment. The balance standard focuses on the usage balance degree of power generation-side equipment and grid-side equipment. By obtaining the health status of power generation-side equipment and grid-side equipment, classifying them according to the health status, and correspondingly reducing and increasing the call times of the same equipment in power generation-side equipment and grid-side equipment according to the classification, the usage degree of the same equipment in power generation-side equipment and grid-side equipment can be ensured, which is convenient for subsequent unified maintenance and beneficial for use.

[0066] The process of obtaining response information based on the prediction result is as follows: Obtain the control information by acquiring the control information of the past target device to solve the influence of voltage change, establish the correlation between the past voltage change and the control information, establish an information library for storing the control information and the past voltage change, traverse the information library based on the prediction result to obtain the traversal result. When the traversal result feedback indicates that there is a past voltage change corresponding to the prediction result in the information library, extract the control information of the past voltage change corresponding to the prediction result based on the correlation to obtain the response information. When the traversal result feedback indicates that there is no past voltage change corresponding to the prediction result in the information library, integrate the target device and the prediction result to obtain auxiliary information, send the auxiliary information to the user based on the feedback address information, monitor the user feedback, and obtain the response information according to the user feedback.

[0067] It should be noted that the process of obtaining the control information by acquiring the control information of the past target device to solve the influence of voltage change can be achieved by feeding back the solution of the target device to solve the voltage change influence to the technician and adding the control information by the technician, or by obtaining it from the operation information of the past target device and retrieving it on the Internet.

[0068] The extraction method includes: Extract the voltage change in the target operation information, preset the time unit and voltage threshold, obtain the paragraph where the voltage difference between adjacent time units exceeds the voltage threshold according to the time unit to obtain the target operation information, extract the environmental information corresponding to the target operation information in the past environmental information to obtain the target environmental information, and integrate the target operation information and the target environmental information to obtain the target information.

[0069] It should be noted that the time unit and voltage threshold are preset according to the actual usage situation. The specific time unit can be 5 minutes. For example, when obtaining the paragraph where the voltage difference between adjacent time units exceeds the voltage threshold according to the time unit to obtain the target operation information, when the voltage difference between the voltage at the 5th minute and the voltage at the 10th minute exceeds the voltage threshold, extract the operation information of this paragraph to obtain the target operation information, and at the same time extract the target environmental information according to the target operation information to obtain the target environmental information.

[0070] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended embodiments and their equivalents.

Claims

1. An AGC / AVC method for the aggregated regulation and control of distributed devices on the substation side, comprising: Information acquisition: acquiring device information and user requirements of the area to be regulated, where the device information includes devices and device parameters, the devices include power generation side devices and grid side devices, and acquiring real-time weather information of the power generation side devices to obtain real-time environmental information; Information processing: acquiring past environmental information and operation information of the power generation side devices during operation to obtain past environmental information and past operation information, and based on the past environmental information and past operation information, extracting information on the time period with fluctuations in the operation information through an extraction method to obtain target information, where the target information includes target environmental information and target operation information; It is characterized by including: Regulation generation: generating regulation criteria for the power generation side devices and grid side devices through a standard generation method, where the regulation criteria include economic criteria, efficiency criteria, and balance criteria, and obtaining regulation information that meets user requirements in cooperation with the regulation criteria based on user requirements; Regulation output: delivering the regulation information to the power generation side devices and grid side devices for regulation; Determination of predicted device: selecting a device from the power generation side devices to obtain a target device; Predicted voltage generation: generating future voltage changes based on the target information through a prediction method according to changes in the real-time environmental information to obtain a prediction result, where the prediction result includes voltage changes for the target device, and obtaining response information based on the prediction result; Response output: delivering the response information to the target device to complete the predicted regulation.

2. The AGC / AVC method for aggregated regulation of distributed devices on the substation side according to claim 1, characterized in that: The prediction method includes: performing paragraph processing on the target information and real-time environmental information through a segmented processing method to obtain comparison information, where the comparison information includes a repository, a redundant change trend, and a real-time change trend. The repository includes paragraph environmental information and paragraph operation information with the same length as the real-time change trend. Performing similarity matching between the real-time change trend and the paragraph environmental information in the repository 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 a feedback that the matching degree is greater than the matching threshold in the comparison result to obtain the environmental information to be selected, selecting the environmental information with the highest matching degree from the environmental information to be selected based on the environmental information to be selected 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 relevance to obtain the selected operation information, and obtaining the prediction result based on the selected operation information.

3. The AGC / AVC method for aggregating and regulating a distributed device on the substation side according to claim 2, wherein: The segmented processing method includes: presetting time periods and redundant paragraphs, intercepting real-time environmental information based on the time periods combined with the redundant paragraphs to obtain an environmental change trend, extracting the part corresponding to the time periods from the environmental change trend to obtain a real-time change trend, removing the real-time change trend from the environmental change trend to obtain a redundant change trend, splitting the target information into target environmental information and target operation information, segmenting the target environmental information and target operation information based on the time periods to obtain paragraph environmental information and paragraph operation information, establishing a repository for storing the paragraph environmental information and paragraph operation information, establishing the relevance between the paragraph environmental information and the paragraph operation information, and integrating the repository, the redundant change trend and the real-time change trend to obtain comparison information.

4. The AGC / AVC method for aggregating and regulating a distribution device on the substation side according to claim 2, wherein: 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 from the target environmental information based on the selection point to obtain comparison environmental information, the comparison environmental information being adjacent to the selected environmental information, performing similarity matching between the redundant change trend and the comparison environmental information and selecting the comparison 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 aggregating and regulating a distributed device on the substation side according to claim 1, characterized in that: The process of presetting the regulation standard is as follows: determining the regulation bias, the regulation bias including economy, efficiency and balance, obtaining electricity price information and real-time electricity price, the electricity price information including electricity price highs and lows, presetting an electricity price threshold, obtaining the difference between the real-time electricity price and the electricity price low point to obtain a low difference, obtaining the difference between the real-time electricity price and the electricity price high point to obtain a high difference, when the real-time electricity price is less than the electricity price threshold, the grid-side equipment charges, 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 discharges, and the discharging 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 an economic standard, and obtaining an efficiency standard and a balance standard based on the power generation-side equipment and the grid-side equipment through a standard generation method.

6. The AGC / AVC method for aggregating regulation of a distributed device on the substation side according to claim 5, characterized in that: The standard generation method includes: monitoring the operating status of grid-side devices, determining whether there are differences between the operating status of grid-side devices and device parameters. When there are differences between the operating status of grid-side devices and device parameters, extracting the devices with differences in the grid-side devices to obtain specific devices, generating alarm information based on the specific devices and the differences, obtaining feedback address information, sending the alarm information to users based on the feedback address information, integrating the process of determining whether there are differences between the operating status of grid-side devices and device parameters and generating alarm information to obtain an efficiency standard, obtaining the health status and call times of power generation-side devices and grid-side devices, grading based on the health status to obtain grading levels, where the grading levels include excellent level, medium level, and good level, determining the relationship between the call times of sub-devices in power generation-side devices and grid-side devices and their respective grading levels to obtain a result relationship. When the result relationship indicates that the same devices in power generation-side devices and grid-side devices have different grading levels, preset a fixed number of times, reduce the call times by the fixed number of times when the grading level of the same device is at the good level, and increase the call times by the fixed number of times when the grading level of the same device is at the excellent level, integrating the result relationship, reducing the fixed number of times, and increasing the fixed number of times to obtain a balance standard.

7. An AGC / AVC method for aggregating and regulating a distributed device on the substation side, as claimed in claim 1, wherein: The process of obtaining response information based on the prediction result is as follows: obtaining the control information for the past target device to solve the influence of voltage change to obtain control information, establishing the 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 indicates that there is a past voltage change corresponding to the prediction result in the information library, extracting the control information of the past voltage change corresponding to the prediction result based on the correlation to obtain response information. When the traversal result indicates that there is no past voltage change 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 users based on the feedback address information, listening to user feedback, and obtaining response information according to the user feedback.

8. The AGC / AVC method for aggregating and regulating a distributed device on the substation side according to claim 1, characterized in that: The extraction method includes: extracting the voltage change in the target operation information, presetting a time unit and a voltage threshold, obtaining the paragraphs where the voltage difference between adjacent time units exceeds the voltage threshold according to the time unit to obtain the target operation information, extracting the environmental information corresponding to the target operation information from the past environmental information to obtain the target environmental information, and integrating the target operation information and the target environmental information to obtain the target information.

9. An AGC / AVC system for aggregated regulation of distributed devices on the substation side, characterized in that: An AGC / AVC method for aggregating and regulating a distributed device on the substation side as claimed in any one of claims 1-8 is used.

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