A system and method for managing power quality problems in a flexible interconnected distribution area

Abstract

The present invention discloses a system and method for managing power quality problems in a flexible interconnected distribution station area. The power quality problem management system includes a data acquisition module, a data processing module, a model training module, a test optimization module, a prediction and analysis module, and a management and control module. The present invention solves the problem that the existing power quality problems in the flexible interconnected distribution station area cannot be monitored in real time, resulting in the inability to timely and effectively manage and control the power quality problems in the flexible interconnected distribution station area, resulting in poor management and control effects of power quality problems. The present invention predicts and analyzes the characteristic power data of the flexible interconnected distribution station area based on the optimal power quality assessment model of the flexible interconnected distribution station area, can monitor the power quality problems in the flexible interconnected distribution station area in real time, can manage and control the power quality problems in the flexible interconnected distribution station area in a timely and effective manner, and can improve the management and control effects of power quality problems in the flexible interconnected distribution station area.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution substations, and in particular to a system and method for managing power quality problems in flexible interconnected power distribution substations. Background Art

[0002] A flexible interconnected distribution substation is a distribution network that can achieve a balance between electricity supply and demand through intelligent scheduling technology based on changes in electricity demand. This distribution network can effectively respond to sudden electricity demands, improve power supply reliability, reduce energy loss, and has high flexibility and scalability.

[0003] With the acceleration of urbanization, people's demand for electricity is getting higher and higher, and the complexity of the power system is also increasing. Due to various reasons, power quality problems will occur in the flexible interconnected distribution station area, such as voltage instability and frequency fluctuations. These problems will affect people's normal life and work, and will also pose a threat to the stable operation of the power system and personal safety.

[0004] The Chinese patent with publication number CN117878937A discloses a real-type test system for AC / DC flexible interconnected distribution substations with switchable topology, including: pole-mounted transformers, low-voltage substation flexible interconnection devices, photovoltaic power generation systems, battery energy storage systems, AC / DC adjustable loads, power quality management devices, and low-voltage power grid simulators; it has the functions of constructing heavy load transfer scenarios, power failure support scenarios, load balancing scenarios, source-load transfer scenarios, fault isolation scenarios, and power quality management scenarios under four grid topologies to meet the real-type test requirements of AC / DC flexible interconnected distribution substations and solve the problem of a single test scenario under a specific grid; however, the patent has the following defects:

[0005] The existing system cannot monitor the power quality problems in the flexible interconnected distribution station area in real time, resulting in the inability to timely and effectively manage and control the power quality problems in the flexible interconnected distribution station area, resulting in poor management and control effects of power quality problems. Summary of the invention

[0006] The purpose of the present invention is to provide a system and method for managing power quality problems in a flexible interconnected distribution station area, which can monitor the power quality problems in the flexible interconnected distribution station area in real time, and can timely and effectively manage and control the power quality problems in the flexible interconnected distribution station area, thereby improving the management and control effect of the power quality problems in the flexible interconnected distribution station area, and solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A power quality problem management system for a flexible interconnected distribution station area, comprising:

[0009] Data acquisition module, used to collect real-time power data of flexible interconnected distribution stations;

[0010] A data processing module is used to process the real-time power data of the flexible interconnected distribution station area;

[0011] Model training module, used to build a power quality assessment model for flexible interconnected distribution substations;

[0012] Test optimization module, used to test and optimize the power quality assessment model of the flexible interconnected distribution station area;

[0013] Prediction and analysis module, used to predict and analyze the characteristic power data of the flexible interconnection distribution station area;

[0014] The governance and control module is used to manage and control power quality issues in flexible interconnected distribution station areas.

[0015] Preferably, the data acquisition module includes:

[0016] The voltage collection unit is used to collect the voltage conditions of the flexible interconnection distribution station area in real time and determine the voltage parameters of the flexible interconnection distribution station area;

[0017] A current acquisition unit is used to collect the current conditions of the flexible interconnection distribution substation in real time and determine the current parameters of the flexible interconnection distribution substation;

[0018] The power collection unit is used to collect the power situation of the flexible interconnection distribution station area in real time and determine the power parameters of the flexible interconnection distribution station area;

[0019] The frequency acquisition unit is used to collect the frequency conditions of the flexible interconnection distribution station area in real time and determine the frequency parameters of the flexible interconnection distribution station area;

[0020] Among them, based on the voltage parameters, current parameters, power parameters and frequency parameters of the flexible interconnected distribution station area, the real-time electric energy data of the flexible interconnected distribution station area is determined.

[0021] Preferably, the data acquisition module further includes:

[0022] A data acquisition time interval extraction module, used to extract the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0023] An initial data acquisition time interval determination module, used to use the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit as the initial data acquisition time interval;

[0024] A reference cycle duration acquisition module, used to acquire the reference cycle duration according to the preset initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; wherein the reference cycle duration is the minimum time length of a single data acquisition including the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0025] A time compensation coefficient acquisition module is used to acquire the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit according to the initial data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit, wherein the time compensation coefficient is acquired by the following formula:

[0026]

[0027] Where, f represents the time compensation coefficient; T p represents the average value of the initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; T gi represents the initial data collection time interval corresponding to the i-th collection unit among the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T gmax and T gmin Respectively represent the maximum and minimum values ​​of the initial data acquisition time intervals in the voltage acquisition unit, the current acquisition unit, the power acquisition unit, and the frequency acquisition unit;

[0028] A data acquisition time interval adjustment module is used to adjust the initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit using the time compensation coefficient, and obtain the adjusted data acquisition time interval corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit.

[0029] Preferably, the data collection time interval adjustment module includes:

[0030] A time compensation coefficient extraction module, used to extract the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0031] An initial data acquisition time interval extraction module, used to extract the initial data acquisition time intervals corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0032] A collection time sequence acquisition module, used to sort the data collection times corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit in a front-to-back order within a reference cycle duration using the initial data collection time intervals corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit to obtain a collection time sequence;

[0033] A collection time interval acquisition module, used for acquiring the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit according to the collection time sequence;

[0034] A data collection time interval adjustment execution module, used to obtain the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit according to the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit, in combination with a time compensation coefficient and a data collection time interval adjustment model;

[0035] The model structure of the data collection time interval adjustment model is as follows:

[0036]

[0037] Among them, T gt represents the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T g represents the initial data acquisition time interval corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; f represents the time compensation coefficient; T kx and T kh It indicates that the voltage acquisition unit, current acquisition unit, power acquisition unit and frequency acquisition unit have a corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period.

[0038] Preferably, the data processing module includes:

[0039] A data retrieval unit, used to retrieve real-time power data of the flexible interconnection distribution station area;

[0040] Obtain real-time power data of flexible interconnected distribution stations;

[0041] Based on the sequential retrieval method, the real-time power data of the flexible interconnected distribution station area is retrieved;

[0042] Check the consistency of real-time power data in the flexible interconnected distribution station area;

[0043] According to the reasonable value range and mutual relationship of each parameter in the real-time power data of the flexible interconnected distribution station area, check whether the real-time power data of the flexible interconnected distribution station area meets the requirements;

[0044] Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time power data of the flexible interconnection distribution station area;

[0045] Process invalid and missing values ​​of real-time power data in flexible interconnected distribution stations;

[0046] Remove invalid and missing data that are of no value to the management of power quality issues in the real-time power data of the flexible interconnected distribution station area;

[0047] Determine the real-time power data of flexible interconnected distribution stations that are valuable for power quality problem management;

[0048] A data sorting unit, used to sort the real-time power data of the flexible interconnected distribution station area;

[0049] Obtain real-time power data of flexible interconnected distribution areas that are valuable for power quality problem management;

[0050] Based on the internal sorting method, the real-time power data of the flexible interconnected distribution substation area which is valuable for the management of power quality problems is sorted;

[0051] Determine the real-time power data of the flexible interconnected distribution substations with an arranged order;

[0052] A feature extraction unit, used for extracting features from real-time electric energy data of the flexible interconnected distribution station area;

[0053] Obtain real-time power data of flexible interconnected distribution substations with ranking order;

[0054] Extract features from real-time power data of flexible interconnected distribution substations with arrangement order;

[0055] Determine the characteristic power data of the flexible interconnected distribution station area.

[0056] Preferably, the model training module includes:

[0057] A data collection unit, used to collect historical power data of the flexible interconnection distribution station area;

[0058] According to the power quality problem management needs of the flexible interconnected distribution area, a large amount of historical power data of the flexible interconnected distribution area that can reflect the essence of the power quality problem is collected;

[0059] A data division unit, used to divide the historical electric energy data of the flexible interconnection distribution station area;

[0060] Obtain historical power data of flexible interconnected distribution substations;

[0061] Divide the historical power data of the flexible interconnected distribution station area;

[0062] Determine the training set and test set;

[0063] Model training unit, used to build a power quality assessment model for flexible interconnected distribution substations;

[0064] According to the power quality problem management needs of the flexible interconnected distribution station area, select the model architecture suitable for the power quality assessment of the flexible interconnected distribution station area;

[0065] Based on the training set, the selected model architecture suitable for power quality assessment in flexible interconnected distribution substation areas is trained;

[0066] The power quality assessment model of the flexible interconnected distribution station area is determined.

[0067] Preferably, the test optimization module includes:

[0068] Performance test unit, used to test the power quality assessment model of the flexible interconnected distribution station area;

[0069] Obtain the power quality assessment model of the flexible interconnected distribution substation area;

[0070] Based on the test set, the performance test of the power quality assessment model of the flexible interconnected distribution station area is carried out;

[0071] Determine the performance test results of the power quality assessment model based on the flexible interconnected distribution station area;

[0072] An optimization and adjustment unit, used to optimize the power quality assessment model of the flexible interconnected distribution station area;

[0073] Obtain performance test results of the power quality assessment model based on the flexible interconnected distribution area;

[0074] Conduct in-depth exploration and relevant analysis of the performance test results of the power quality assessment model based on the flexible interconnected distribution station area;

[0075] Determine the optimal adjustment plan based on the power quality assessment model of the flexible interconnected distribution station area;

[0076] Based on the optimization adjustment scheme, the power quality assessment model of the flexible interconnected distribution station area is optimized and adjusted;

[0077] Determine the optimal power quality assessment model for flexible interconnected distribution substations.

[0078] Preferably, the prediction analysis module includes:

[0079] A data extraction unit, used to extract characteristic power data of the flexible interconnection distribution station area;

[0080] According to the power quality problem management needs of the flexible interconnected distribution station area, the characteristic power data of the flexible interconnected distribution station area is extracted;

[0081] A prediction and analysis unit, used to predict and analyze characteristic power data of the flexible interconnection distribution station area;

[0082] Obtain the optimal power quality assessment model for flexible interconnected distribution substations;

[0083] Based on the optimal power quality assessment model of the flexible interconnected distribution area, the characteristic power data of the flexible interconnected distribution area is predicted and analyzed;

[0084] Determine the power quality prediction and analysis results of the flexible interconnected distribution station area.

[0085] Preferably, the governance and control module includes:

[0086] The plan formulation unit is used to formulate a management and control plan for power quality issues in the flexible interconnected distribution station area;

[0087] Obtain the power quality prediction and analysis results of the flexible interconnected distribution station area;

[0088] Conduct in-depth mining and relevant analysis on the power quality prediction and analysis results of the flexible interconnected distribution station area;

[0089] Automatically diagnose power quality problems in flexible interconnected distribution stations, quickly locate faults and find the causes of faults;

[0090] Develop a management and control plan for power quality issues in flexible interconnected distribution areas;

[0091] A governance and control unit is used to manage and control power quality issues in the flexible interconnected distribution station area;

[0092] Obtain the power quality problem management and control solution for the flexible interconnected distribution station area;

[0093] Based on the power quality problem management and control solution of flexible interconnected distribution stations, the power quality problems in flexible interconnected distribution stations are intelligently managed and controlled.

[0094] According to another aspect of the present invention, a method for managing power quality problems in a flexible interconnected distribution station area is provided, which is implemented based on the power quality problem management system of the flexible interconnected distribution station area, and includes the following steps:

[0095] S1: collecting real-time power data of the flexible interconnected distribution substation area, processing the real-time power data of the flexible interconnected distribution substation area, and determining characteristic power data of the flexible interconnected distribution substation area;

[0096] S2: Construct a power quality assessment model for the flexible interconnected distribution substation area, test and optimize the power quality assessment model for the flexible interconnected distribution substation area, and determine the optimal power quality assessment model for the flexible interconnected distribution substation area;

[0097] S3: Based on the optimal power quality assessment model of the flexible interconnected distribution substation, the characteristic power data of the flexible interconnected distribution substation is predicted and analyzed to determine the power quality prediction and analysis results of the flexible interconnected distribution substation;

[0098] S4: Develop a plan for the management and control of power quality issues in flexible interconnected distribution stations, and conduct intelligent management and control of power quality issues in flexible interconnected distribution stations.

[0099] Compared with the prior art, the present invention has the following beneficial effects:

[0100] The present invention collects real-time electric energy data of the flexible interconnected distribution station area, processes the real-time electric energy data of the flexible interconnected distribution station area, determines characteristic electric energy data of the flexible interconnected distribution station area, constructs a power quality assessment model of the flexible interconnected distribution station area, tests and optimizes the power quality assessment model of the flexible interconnected distribution station area, determines the optimal power quality assessment model of the flexible interconnected distribution station area, predicts and analyzes the characteristic electric energy data of the flexible interconnected distribution station area based on the optimal power quality assessment model of the flexible interconnected distribution station area, determines the power quality prediction and analysis results of the flexible interconnected distribution station area, formulates a power quality problem management and control plan for the flexible interconnected distribution station area, performs intelligent management and control on the power quality problems of the flexible interconnected distribution station area, can monitor the power quality problems of the flexible interconnected distribution station area in real time, can timely and effectively manage and control the power quality problems of the flexible interconnected distribution station area, and can improve the management and control effect of the power quality problems of the flexible interconnected distribution station area. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] Figure 1 It is a module diagram of the power quality problem management system of the flexible interconnected distribution station area of ​​the present invention;

[0102] Figure 2 A structural diagram of the power quality problem management system of the flexible interconnected distribution station area of ​​the present invention;

[0103] Figure 3 The present invention is a flow chart of a method for managing power quality issues in a flexible interconnected distribution station area. DETAILED DESCRIPTION

[0104] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0105] In order to solve the existing problem that the power quality problems in the flexible interconnected distribution area cannot be monitored in real time, resulting in the inability to timely and effectively manage and control the power quality problems in the flexible interconnected distribution area, resulting in poor management and control of power quality problems, please refer to Figure 1-Figure 3 , this embodiment provides the following technical solutions:

[0106] A power quality problem management system for a flexible interconnected distribution station area includes: a data acquisition module, a data processing module, a model training module, a test optimization module, a prediction analysis module and a management and control module.

[0107] It should be noted that through the interactive communication between the data acquisition module, the data processing module, the model training module, the test optimization module, the prediction analysis module and the governance and control module, the power quality problems in the flexible interconnected distribution station area can be monitored in real time, the power quality problems in the flexible interconnected distribution station area can be governed and controlled in a timely and effective manner, and the governance and control effect of the power quality problems in the flexible interconnected distribution station area can be improved.

[0108] Among them, the data acquisition module is used to collect real-time power data of the flexible interconnected distribution station area;

[0109] In this embodiment, the data acquisition module includes:

[0110] The voltage collection unit is used to collect the voltage conditions of the flexible interconnection distribution station area in real time and determine the voltage parameters of the flexible interconnection distribution station area;

[0111] A current acquisition unit is used to collect the current conditions of the flexible interconnection distribution substation in real time and determine the current parameters of the flexible interconnection distribution substation;

[0112] The power collection unit is used to collect the power situation of the flexible interconnection distribution station area in real time and determine the power parameters of the flexible interconnection distribution station area;

[0113] The frequency acquisition unit is used to collect the frequency conditions of the flexible interconnection distribution station area in real time and determine the frequency parameters of the flexible interconnection distribution station area;

[0114] Among them, based on the voltage parameters, current parameters, power parameters and frequency parameters of the flexible interconnected distribution station area, the real-time electric energy data of the flexible interconnected distribution station area is determined.

[0115] Specifically, the data acquisition module further includes:

[0116] A data acquisition time interval extraction module, used to extract the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0117] An initial data acquisition time interval determination module, used to use the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit as the initial data acquisition time interval;

[0118] A reference cycle duration acquisition module, used to acquire the reference cycle duration according to the preset initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; wherein the reference cycle duration is the minimum time length of a single data acquisition including the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0119] A time compensation coefficient acquisition module is used to acquire the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit according to the initial data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit, wherein the time compensation coefficient is acquired by the following formula:

[0120]

[0121] Where, f represents the time compensation coefficient; T p represents the average value of the initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; T gi represents the initial data collection time interval corresponding to the i-th collection unit among the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T gmax and T gmin Respectively represent the maximum and minimum values ​​of the initial data acquisition time intervals in the voltage acquisition unit, the current acquisition unit, the power acquisition unit, and the frequency acquisition unit;

[0122] A data acquisition time interval adjustment module is used to adjust the initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit using the time compensation coefficient, and obtain the adjusted data acquisition time interval corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit.

[0123] The technical effect of the above technical solution is: by extracting and determining the initial data collection time intervals of the voltage, current, power and frequency collection units, and calculating the reference cycle duration based on these intervals, the time synchronization and efficiency of the data collection process are ensured. By further adjusting the data collection time intervals of each collection unit, the overall data collection process can be optimized, unnecessary time waste can be reduced, and the efficiency of data collection can be improved.

[0124] Introducing a time compensation coefficient to adjust the initial data collection time interval can effectively solve the problem of asynchronous data collection time caused by performance differences of different collection units. By dynamically adjusting the time interval of each collection unit, they can collect data more synchronously, thereby improving the accuracy and consistency of data collection. This technical solution allows the data collection time interval to be dynamically adjusted according to actual needs, increasing the flexibility and adaptability of the system. For example, in scenarios where higher data collection accuracy is required, the collection frequency can be increased by reducing the time interval; in scenarios where real-time requirements are not high but energy consumption is emphasized, the time interval can be appropriately increased to extend the device's battery life.

[0125] By properly adjusting the data collection time interval, excessive consumption of resources (such as processor resources, storage resources, etc.) caused by frequent data collection can be avoided. This helps to improve the resource utilization efficiency of the entire system and reduce operating costs. This technical solution specifically synchronizes multiple data sources such as voltage, current, power and frequency to ensure the time consistency and correlation between different source data. This is of great significance for subsequent data analysis, processing and decision support.

[0126] In summary, this technical solution achieves a significant improvement in data collection efficiency, accuracy, and system flexibility by optimizing the setting and adjustment mechanism of data collection time intervals, while optimizing resource utilization and supporting the synchronous processing of multi-source data.

[0127] Specifically, the data collection time interval adjustment module includes:

[0128] A time compensation coefficient extraction module, used to extract the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0129] An initial data acquisition time interval extraction module, used to extract the initial data acquisition time intervals corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit;

[0130] A collection time sequence acquisition module, used to sort the data collection times corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit in a front-to-back order within a reference cycle duration using the initial data collection time intervals corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit to obtain a collection time sequence;

[0131] A collection time interval acquisition module, used for acquiring the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit according to the collection time sequence;

[0132] A data collection time interval adjustment execution module, used to obtain the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit according to the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit, in combination with a time compensation coefficient and a data collection time interval adjustment model;

[0133] The model structure of the data collection time interval adjustment model is as follows:

[0134]

[0135] Among them, T gt represents the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T g represents the initial data acquisition time interval corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; f represents the time compensation coefficient; T kx and T kh It indicates that the voltage acquisition unit, current acquisition unit, power acquisition unit and frequency acquisition unit have a corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period.

[0136] The technical effect of the above technical solution is: by introducing the time compensation coefficient and fine collection time sequence management, the technical solution can ensure the time synchronization of various data acquisition units such as voltage, current, power and frequency during the data acquisition process. This synchronization is crucial for subsequent data analysis, processing and decision making because it ensures the accuracy and comparability of the data. The data acquisition time interval adjustment module can dynamically adjust the data acquisition time interval of each acquisition unit based on the acquisition time sequence, the acquisition time interval and the time compensation coefficient. This dynamic adjustment mechanism can be optimized according to the actual operating conditions and demand changes, thereby optimizing system performance and resource utilization while ensuring the quality of data acquisition.

[0137] This technical solution can improve the overall efficiency of data collection by optimizing the data collection time interval and reducing unnecessary collection redundancy. This helps reduce system energy consumption, extend device battery life, and quickly respond to data requests when needed. This technical solution allows flexible adjustment of data collection time intervals and synchronization strategies according to different application scenarios and needs. This flexibility and adaptability enables the system to better adapt to complex and changing operating environments and meet diverse data collection needs.

[0138] Through sophisticated collection time sequence management and data collection time interval adjustment models, this technical solution can support complex data collection scenarios, including multi-source data synchronous collection, high-precision data collection, etc. This provides a high-quality data foundation for subsequent data processing, analysis, and mining. Due to the high synchronization and precise control of data collection time, this technical solution can significantly improve the accuracy of subsequent data processing and analysis. This helps to discover potential patterns and associations in the data, providing a more accurate and reliable basis for decision-making.

[0139] In summary, this technical solution achieves high synchronization and precise control of data collection time by introducing mechanisms such as time compensation coefficient, collection moment series management and data collection time interval adjustment model, improves data collection efficiency and quality, and enhances the flexibility and adaptability of the system.

[0140] Among them, the data processing module is used to process the real-time power data of the flexible interconnected distribution station area;

[0141] In this embodiment, the data processing module includes:

[0142] A data retrieval unit, used to retrieve real-time power data of the flexible interconnection distribution station area;

[0143] Obtain real-time power data of flexible interconnected distribution stations;

[0144] Based on the sequential retrieval method, the real-time power data of the flexible interconnected distribution station area is retrieved;

[0145] Check the consistency of real-time power data in the flexible interconnected distribution station area;

[0146] According to the reasonable value range and mutual relationship of each parameter in the real-time power data of the flexible interconnected distribution station area, check whether the real-time power data of the flexible interconnected distribution station area meets the requirements;

[0147] Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time power data of the flexible interconnection distribution station area;

[0148] Process invalid and missing values ​​of real-time power data in flexible interconnected distribution stations;

[0149] Remove invalid and missing data that are of no value to the management of power quality issues in the real-time power data of the flexible interconnected distribution station area;

[0150] Determine the real-time power data of flexible interconnected distribution stations that are valuable for power quality problem management;

[0151] A data sorting unit, used to sort the real-time power data of the flexible interconnected distribution station area;

[0152] Obtain real-time power data of flexible interconnected distribution areas that are valuable for power quality problem management;

[0153] Based on the internal sorting method, the real-time power data of the flexible interconnected distribution substation area which is valuable for the management of power quality problems is sorted;

[0154] Determine the real-time power data of the flexible interconnected distribution substations with an arranged order;

[0155] A feature extraction unit, used for extracting features from real-time electric energy data of the flexible interconnected distribution station area;

[0156] Obtain real-time power data of flexible interconnected distribution substations with ranking order;

[0157] Extract features from real-time power data of flexible interconnected distribution substations with arrangement order;

[0158] Determine the characteristic power data of the flexible interconnected distribution station area.

[0159] Among them, the model training module is used to build a power quality assessment model for flexible interconnected distribution substations;

[0160] In this embodiment, the model training module includes:

[0161] A data collection unit, used to collect historical power data of the flexible interconnection distribution station area;

[0162] According to the power quality problem management needs of the flexible interconnected distribution area, a large amount of historical power data of the flexible interconnected distribution area that can reflect the essence of the power quality problem is collected;

[0163] A data division unit, used to divide the historical electric energy data of the flexible interconnection distribution station area;

[0164] Obtain historical power data of flexible interconnected distribution substations;

[0165] Divide the historical power data of the flexible interconnected distribution station area;

[0166] Determine the training set and test set;

[0167] Model training unit, used to build a power quality assessment model for flexible interconnected distribution substations;

[0168] According to the power quality problem management needs of the flexible interconnected distribution station area, select the model architecture suitable for the power quality assessment of the flexible interconnected distribution station area;

[0169] Based on the training set, the selected model architecture suitable for power quality assessment in flexible interconnected distribution substation areas is trained;

[0170] The power quality assessment model of the flexible interconnected distribution station area is determined.

[0171] Among them, the test optimization module is used to test and optimize the power quality assessment model of the flexible interconnected distribution station area;

[0172] In this embodiment, the test optimization module includes:

[0173] Performance test unit, used to test the power quality assessment model of the flexible interconnected distribution station area;

[0174] Obtain the power quality assessment model of the flexible interconnected distribution substation area;

[0175] Based on the test set, the performance test of the power quality assessment model of the flexible interconnected distribution station area is carried out;

[0176] Determine the performance test results of the power quality assessment model based on the flexible interconnected distribution station area;

[0177] An optimization and adjustment unit, used to optimize the power quality assessment model of the flexible interconnected distribution station area;

[0178] Obtain performance test results of the power quality assessment model based on the flexible interconnected distribution area;

[0179] Conduct in-depth exploration and relevant analysis of the performance test results of the power quality assessment model based on the flexible interconnected distribution station area;

[0180] Determine the optimal adjustment plan based on the power quality assessment model of the flexible interconnected distribution station area;

[0181] Based on the optimization adjustment scheme, the power quality assessment model of the flexible interconnected distribution station area is optimized and adjusted;

[0182] Determine the optimal power quality assessment model for flexible interconnected distribution substations.

[0183] Among them, the prediction and analysis module is used to predict and analyze the characteristic power data of the flexible interconnected distribution station area;

[0184] In this embodiment, the prediction analysis module includes:

[0185] A data extraction unit, used to extract characteristic power data of the flexible interconnection distribution station area;

[0186] According to the power quality problem management needs of the flexible interconnected distribution station area, the characteristic power data of the flexible interconnected distribution station area is extracted;

[0187] A prediction and analysis unit, used to predict and analyze characteristic power data of the flexible interconnection distribution station area;

[0188] Obtain the optimal power quality assessment model for flexible interconnected distribution substations;

[0189] Based on the optimal power quality assessment model of the flexible interconnected distribution area, the characteristic power data of the flexible interconnected distribution area is predicted and analyzed;

[0190] Determine the power quality prediction and analysis results of the flexible interconnected distribution station area.

[0191] Among them, the governance and control module is used to manage and control the power quality issues in the flexible interconnected distribution station area.

[0192] In this embodiment, the governance control module includes:

[0193] The plan formulation unit is used to formulate a management and control plan for power quality issues in the flexible interconnected distribution station area;

[0194] Obtain the power quality prediction and analysis results of the flexible interconnected distribution station area;

[0195] Conduct in-depth mining and relevant analysis on the power quality prediction and analysis results of the flexible interconnected distribution station area;

[0196] Automatically diagnose power quality problems in flexible interconnected distribution stations, quickly locate faults and find the causes of faults;

[0197] Develop a management and control plan for power quality issues in flexible interconnected distribution stations;

[0198] A governance and control unit is used to manage and control power quality issues in the flexible interconnected distribution station area;

[0199] Obtain the power quality problem management and control solution for the flexible interconnected distribution station area;

[0200] Based on the power quality problem management and control solution of flexible interconnected distribution stations, the power quality problems in flexible interconnected distribution stations are intelligently managed and controlled.

[0201] In order to better demonstrate the power quality problem management process of a flexible interconnected distribution station area, this embodiment now provides a power quality problem management method for a flexible interconnected distribution station area, which is implemented based on a power quality problem management system for a flexible interconnected distribution station area as described above, and includes the following steps:

[0202] S1: collecting real-time power data of the flexible interconnected distribution substation area, processing the real-time power data of the flexible interconnected distribution substation area, and determining characteristic power data of the flexible interconnected distribution substation area;

[0203] S2: Construct a power quality assessment model for the flexible interconnected distribution substation area, test and optimize the power quality assessment model for the flexible interconnected distribution substation area, and determine the optimal power quality assessment model for the flexible interconnected distribution substation area;

[0204] S3: Based on the optimal power quality assessment model of the flexible interconnected distribution substation, the characteristic power data of the flexible interconnected distribution substation is predicted and analyzed to determine the power quality prediction and analysis results of the flexible interconnected distribution substation;

[0205] S4: Develop a plan for the management and control of power quality issues in flexible interconnected distribution stations, and conduct intelligent management and control of power quality issues in flexible interconnected distribution stations.

[0206] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0207] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power quality problem management system for a flexible interconnected distribution station area, characterized in that: include: Data acquisition module, used to collect real-time power data of flexible interconnected distribution stations; A data processing module is used to process the real-time power data of the flexible interconnected distribution station area; Model training module, used to build a power quality assessment model for flexible interconnected distribution substations; Test optimization module, used to test and optimize the power quality assessment model of the flexible interconnected distribution station area; Prediction and analysis module, used to predict and analyze the characteristic power data of the flexible interconnection distribution station area; The governance and control module is used to manage and control the power quality issues in the flexible interconnected distribution station area; The data acquisition module comprises: The voltage collection unit is used to collect the voltage conditions of the flexible interconnection distribution station area in real time and determine the voltage parameters of the flexible interconnection distribution station area; A current acquisition unit is used to collect the current conditions of the flexible interconnection distribution substation in real time and determine the current parameters of the flexible interconnection distribution substation; The power collection unit is used to collect the power situation of the flexible interconnection distribution station area in real time and determine the power parameters of the flexible interconnection distribution station area; The frequency acquisition unit is used to collect the frequency conditions of the flexible interconnection distribution station area in real time and determine the frequency parameters of the flexible interconnection distribution station area; Among them, based on the voltage parameters, current parameters, power parameters and frequency parameters of the flexible interconnection distribution station area, the real-time power data of the flexible interconnection distribution station area is determined; The data acquisition module further includes: A data acquisition time interval extraction module, used to extract the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; An initial data acquisition time interval determination module, used to use the preset data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit as the initial data acquisition time interval; A reference cycle duration acquisition module, used to acquire the reference cycle duration according to the preset initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; wherein the reference cycle duration is the minimum time length of a single data acquisition including the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; A time compensation coefficient acquisition module is used to acquire the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit according to the initial data acquisition time intervals of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit, wherein the time compensation coefficient is acquired by the following formula: ； in, f Indicates the time compensation coefficient; T p represents the average value of the initial data collection time interval of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T gi Indicates the first of the voltage acquisition unit, current acquisition unit, power acquisition unit and frequency acquisition unit i The initial data collection time interval corresponding to each collection unit; T gmax and T gmin Respectively represent the maximum and minimum values ​​of the initial data acquisition time intervals in the voltage acquisition unit, the current acquisition unit, the power acquisition unit, and the frequency acquisition unit; A data acquisition time interval adjustment module is used to adjust the initial data acquisition time interval of the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit using the time compensation coefficient, and obtain the adjusted data acquisition time interval corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit.

2. According to claim 1, a power quality problem management system for a flexible interconnected distribution station area is characterized in that: The data collection time interval adjustment module includes: A time compensation coefficient extraction module, used to extract the time compensation coefficients corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; An initial data acquisition time interval extraction module, used to extract the initial data acquisition time intervals corresponding to the voltage acquisition unit, the current acquisition unit, the power acquisition unit and the frequency acquisition unit; A collection time sequence acquisition module, used to sort the data collection times corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit in a front-to-back order within a reference cycle duration using the initial data collection time intervals corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit to obtain a collection time sequence; A collection time interval acquisition module, used for acquiring the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit according to the collection time sequence; A data collection time interval adjustment execution module, used to obtain the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit according to the collection time interval between the data collection time of the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit compared with the data collection time of the next data collection unit, in combination with a time compensation coefficient and a data collection time interval adjustment model; The model structure of the data collection time interval adjustment model is as follows: ； in, T gt Indicates the adjusted data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; T g Indicates the initial data collection time interval corresponding to the voltage collection unit, the current collection unit, the power collection unit and the frequency collection unit; f Indicates the time compensation coefficient; T kx and T kh It indicates that the voltage acquisition unit, current acquisition unit, power acquisition unit and frequency acquisition unit have a corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period between the adjacent acquisition moments and the corresponding time period.

3. According to the power quality problem management system of the flexible interconnected distribution area of ​​claim 1, it is characterized in that: The data processing module comprises: A data retrieval unit is used to retrieve the real-time power data of the flexible interconnection distribution station area; obtain the real-time power data of the flexible interconnection distribution station area; Based on the sequential retrieval method, the real-time power data of the flexible interconnected distribution station area is retrieved; the consistency of the real-time power data of the flexible interconnected distribution station area is checked; According to the reasonable value range and mutual relationship of each parameter in the real-time power data of the flexible interconnected distribution station area, check whether the real-time power data of the flexible interconnected distribution station area meets the requirements; Remove inconsistent data that is beyond the normal range, logically unreasonable or contradictory in the real-time power data of the flexible interconnection distribution station area; Process invalid and missing values ​​of real-time power data in flexible interconnected distribution stations; Remove invalid and missing data that are of no value to the management of power quality issues in the real-time power data of the flexible interconnected distribution station area; Determine the real-time power data of the flexible interconnected distribution substation area that is valuable for the management of power quality issues; a data sorting unit is used to sort the real-time power data of the flexible interconnected distribution substation area; Obtain real-time power data of flexible interconnected distribution areas that are valuable for power quality problem management; Based on the internal sorting method, the real-time power data of the flexible interconnected distribution substation area which is valuable for the management of power quality problems is sorted; Determine the real-time power data of the flexible interconnected distribution substations with an arranged order; A feature extraction unit is used to extract features from real-time power data of the flexible interconnected distribution substation area; and obtain real-time power data of the flexible interconnected distribution substation area with an arrangement order; The real-time electric energy data of the flexible interconnected distribution substations with arrangement order are subjected to feature extraction; and the characteristic electric energy data of the flexible interconnected distribution substations are determined.

4. A power quality problem management system for a flexible interconnected distribution station area according to claim 3, characterized in that: The model training module includes: A data collection unit, used to collect historical power data of the flexible interconnection distribution station area; According to the power quality problem management needs of the flexible interconnected distribution area, a large amount of historical power data of the flexible interconnected distribution area that can reflect the essence of the power quality problem is collected; A data division unit is used to divide the historical power data of the flexible interconnection distribution station area; and obtain the historical power data of the flexible interconnection distribution station area; Divide the historical power data of the flexible interconnected distribution station area; determine the training set and the test set; Model training unit, used to build a power quality assessment model for flexible interconnected distribution substations; According to the power quality problem management needs of the flexible interconnected distribution station area, select the model architecture suitable for the power quality assessment of the flexible interconnected distribution station area; Based on the training set, the selected model architecture suitable for power quality assessment in flexible interconnected distribution substation areas is trained; The power quality assessment model of the flexible interconnected distribution station area is determined.

5. A power quality problem management system for a flexible interconnected distribution station area according to claim 4, characterized in that: The test optimization module includes: A performance testing unit, used to test the power quality assessment model of the flexible interconnected distribution substation area; and obtain the power quality assessment model of the flexible interconnected distribution substation area; Based on the test set, the performance test of the power quality assessment model of the flexible interconnected distribution station area is carried out; Determine the performance test results of the power quality assessment model based on the flexible interconnected distribution station area; An optimization and adjustment unit, used for optimizing the power quality assessment model of the flexible interconnected distribution substation area; obtaining performance test results based on the power quality assessment model of the flexible interconnected distribution substation area; Conduct in-depth exploration and relevant analysis of the performance test results of the power quality assessment model based on the flexible interconnected distribution station area; Determine the optimal adjustment plan based on the power quality assessment model of the flexible interconnected distribution station area; Based on the optimization adjustment scheme, the power quality assessment model of the flexible interconnected distribution station area is optimized and adjusted; Determine the optimal power quality assessment model for flexible interconnected distribution substations.

6. A power quality problem management system for a flexible interconnected distribution station area according to claim 5, characterized in that: The prediction analysis module includes: A data extraction unit, used to extract characteristic power data of the flexible interconnection distribution station area; According to the power quality problem management needs of the flexible interconnected distribution station area, the characteristic power data of the flexible interconnected distribution station area is extracted; A prediction and analysis unit is used to predict and analyze the characteristic power data of the flexible interconnected distribution station area; and obtain the optimal power quality assessment model of the flexible interconnected distribution station area; Based on the optimal power quality assessment model of the flexible interconnected distribution area, the characteristic power data of the flexible interconnected distribution area is predicted and analyzed; Determine the power quality prediction and analysis results of the flexible interconnected distribution station area.

7. A power quality problem management system for a flexible interconnected distribution station area according to claim 6, characterized in that: The governance and control module includes: The plan formulation unit is used to formulate a management and control plan for power quality issues in the flexible interconnected distribution station area; Obtain the power quality prediction and analysis results of the flexible interconnected distribution station area; Conduct in-depth mining and relevant analysis on the power quality prediction and analysis results of the flexible interconnected distribution station area; Automatically diagnose power quality problems in flexible interconnected distribution stations, quickly locate faults and find the causes of faults; Develop a management and control plan for power quality issues in flexible interconnected distribution areas; A governance and control unit is used to manage and control the power quality problems in the flexible interconnected distribution station area; and obtain a governance and control plan for the power quality problems in the flexible interconnected distribution station area; Based on the power quality problem management and control solution of flexible interconnected distribution stations, the power quality problems in flexible interconnected distribution stations are intelligently managed and controlled.

8. A method for managing power quality problems in a flexible interconnected distribution station area, implemented based on the power quality problem management system for a flexible interconnected distribution station area according to claim 7, characterized in that: The steps include: S1: collecting real-time power data of the flexible interconnected distribution substation area, processing the real-time power data of the flexible interconnected distribution substation area, and determining characteristic power data of the flexible interconnected distribution substation area; S2: Construct a power quality assessment model for the flexible interconnected distribution substation area, test and optimize the power quality assessment model for the flexible interconnected distribution substation area, and determine the optimal power quality assessment model for the flexible interconnected distribution substation area; S3: Based on the optimal power quality assessment model of the flexible interconnected distribution substation, the characteristic power data of the flexible interconnected distribution substation is predicted and analyzed to determine the power quality prediction and analysis results of the flexible interconnected distribution substation; S4: Develop a plan for the management and control of power quality issues in flexible interconnected distribution stations, and conduct intelligent management and control of power quality issues in flexible interconnected distribution stations.

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