Control system for high-voltage acquisition and low-voltage compensation

Abstract

The invention relates to the technical field of voltage reactive compensation of a power system, and discloses a control system for high-voltage acquisition and low-voltage compensation. According to the system, working condition parameters of a high-voltage side target load are obtained, an electric energy fluctuation track is drawn, and a core compensation area sensitive to compensation is screened out in combination with historical compensation records. The method comprises the following steps: positioning a primary compensation subarea in a core area from compensation function subareas of high-voltage compensation equipment, calculating an expected compensation load of the primary compensation subarea in a future time period, calibrating subareas exceeding a threshold value as secondary compensation subareas, and defining the rest subareas as peripheral compensation subareas; and finally, integrating all the grading partitions to form a dynamic compensation partition cluster for executing the current voltage compensation task. According to the invention, through fusion of historical experience and future prediction, intelligent screening and priority dynamic division of compensation resources are realized, and compensation accuracy and system operation economy are improved.

Description

Technical Field

[0001] This invention relates to the field of voltage and reactive power compensation technology in power systems, specifically a control system for high-voltage acquisition and low-voltage compensation. Background Technology

[0002] In power systems, high-voltage side load fluctuations directly affect the power quality and stability of the grid. Existing technologies generally employ voltage-reactive power compensation strategies based on real-time monitoring data. This involves collecting instantaneous parameters such as current and voltage on the high-voltage side, calculating and deploying corresponding compensation equipment. While this method can respond to current load changes, its compensation decisions rely entirely on instantaneous data, lacking historical understanding of load fluctuation patterns and prediction of future trends. This results in compensation actions remaining in a passive response state, with limited timeliness and accuracy when dealing with complex, periodic, or abrupt load changes.

[0003] Existing compensation schemes typically treat the functional zones of compensation equipment as a whole or into simple, fixed groups, resulting in a rather crude deployment strategy. The system often deploys a set of compensation capacities nearby or in a fixed sequence when it detects voltage exceeding limits or insufficient power factor, failing to fully consider the differences in the sensitivity of different zones to compensation operations in historical operation, nor to predict their compensation responsibilities for the upcoming period. This approach easily leads to wasted compensation resources or insufficient local compensation, making it difficult to optimize compensation efficiency. In industrial scenarios with frequent load fluctuations, the precision and economy of dynamic adjustment need to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a control system for high voltage acquisition and low voltage compensation, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a control system for high-voltage acquisition and low-voltage compensation, the system comprising: The operating condition parameter acquisition and trajectory drawing module is used to acquire the operating condition parameters of the target load carried by the high-voltage power compensation equipment in the current working cycle, and draw the power fluctuation trajectory of the target load on the high-voltage side based on the operating condition parameters. The core compensation area screening module is used to screen out the core compensation area that is sensitive to the compensation operation based on the historical compensation records of the target load in the area through which the power fluctuation trajectory passes. The compensation zone positioning and calibration module is used to locate several compensation functional zones located in the core compensation area from the compensation functional zones of the high-voltage power compensation equipment, mark them as primary compensation zones, calculate the expected compensation load of the primary compensation zones in a preset future time period, and recalibrate the primary compensation zones whose expected compensation load exceeds a predetermined threshold as secondary compensation zones. The peripheral compensation zone definition module is used to define the remaining compensation function zones in the high-voltage power compensation equipment that do not belong to the primary compensation zone and the secondary compensation zone as peripheral compensation zones. The dynamic compensation partition cluster integration module is used to integrate the secondary compensation partition, primary compensation partition and peripheral compensation partition to form a dynamic compensation partition cluster for performing this voltage compensation task.

[0006] Preferably, plotting the power fluctuation trajectory of the target load on the high-voltage side based on the operating parameters includes: The operating parameters are analyzed to extract the high-voltage side voltage sampling sequence and current sampling sequence of the target load at multiple consecutive sampling times; Each voltage sampling point in the high-voltage side voltage sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding set of voltage location points. Each current sampling point in the current sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding set of current location points. The voltage location point set and the current location point set are spatiotemporally aligned and fused to generate a series of mixed location points with timestamps; By connecting the mixed location points in chronological order, the power fluctuation trajectory of the target load on the high-voltage side is formed.

[0007] Preferably, based on the historical compensation records of the target load, the core compensation regions sensitive to compensation operations are selected from the areas traversed by the power fluctuation trajectory, including: Retrieve the high-voltage side compensation operation records of the target load in the past multiple working cycles from the database of the high-voltage power compensation equipment; Extract the specific compensation function partition that each compensation operation is applied to from the high-voltage side compensation operation record, and define it as the historical active partition; Calculate the spatial correlation between each compensation function partition covered by the power fluctuation trajectory and all historically activated partitions; Compensation function zones with spatial correlation higher than the correlation set value are selected, and the continuous physical area composed of these selected compensation function zones is identified as the core compensation area that is sensitive to compensation operations.

[0008] Preferably, calculating the expected compensation load of the primary compensation zone within a preset future time period includes: Obtain the historical load curves of the target load for several complete working cycles prior to the current working cycle; Pattern recognition is performed on the historical load curve to predict the load change trend line of the target load within the preset future time period; By matching the load change trend line with the standard compensation capacity of each primary compensation zone, the amount of compensation that each primary compensation zone needs to bear in the preset future time period is calculated, and the amount of compensation is the expected compensation load.

[0009] Preferably, recalibrating the primary compensation zone where the expected compensation load exceeds a predetermined threshold as a secondary compensation zone includes: A dynamic load threshold associated with the standard compensation capacity is set for each of the primary compensation zones; The calculated expected compensation load for each primary compensation zone is compared with its corresponding dynamic load threshold. The primary compensation partitions whose expected compensation load continuously exceeds their corresponding dynamic load thresholds are removed from the primary compensation partition list of the dynamic compensation partition cluster and added to the secondary compensation partition list to complete the recalibration.

[0010] Preferably, the system further includes optimizing the configuration of the dynamic compensation partition cluster, including: In the global topology network of the high-voltage power compensation equipment, an initial network model of the dynamic compensation partition cluster is established with each secondary compensation partition, primary compensation partition, and peripheral compensation partition as nodes. Analyze the frequency of collaborative actions between any two nodes in the initial network model of the dynamic compensation partition cluster in historical compensation data; Based on the frequency of the coordinated actions, the weight of each connection edge in the initial network model of the dynamic compensation partition cluster is assigned to generate a weighted optimized network model. In the weighted optimized network model, the tree structure that connects all nodes and has the lowest total weight value is found as the final cooperative topology of the dynamic compensation partition cluster.

[0011] Preferably, based on the final collaborative topology, the compensation execution sequence for each partition in the dynamic compensation partition cluster is determined, including: In the final collaborative topology, a secondary compensation partition is selected as the starting node for compensation execution; Starting from the initial node, perform a depth-first traversal along the edges of the final cooperative topology, and record the order in which each node is visited during the traversal. Based on the aforementioned order and in conjunction with the node type attributes, a compensation execution sequence for the dynamic compensation partition cluster is generated, wherein the node type attributes include secondary compensation partitions, primary compensation partitions, and peripheral compensation partitions.

[0012] Preferably, driving the dynamic compensation partition cluster to perform voltage compensation according to the compensation execution sequence includes: According to the compensation execution sequence, compensation instructions containing partition identifiers and action slots are sent sequentially to each partition in the sequence; Receive and parse status feedback signals from each partition, the status feedback signals including partition identifiers and real-time compensation amounts; The received real-time compensation amount is compared with the theoretical expected compensation amount calculated based on the operating condition parameters to generate a real-time compensation error amount. Based on the real-time compensation error, the action time slots in the compensation instructions of the subsequent partitions to be acted upon are dynamically adjusted.

[0013] Preferably, dynamically adjusting the action time slot in the compensation command for the subsequent partition to be acted upon, based on the real-time compensation error, includes: Define a baseline compensation error allowable range; When the real-time compensation error is within the allowable range of the baseline compensation error, the original action time slots of all subsequent partitions in the compensation execution sequence remain unchanged. When the real-time compensation error exceeds the allowable range of the reference compensation error, an action slot adjustment amount is calculated based on the direction and magnitude of the excess. The action time slot adjustment amount is superimposed on the original action time slot of the next partition to be acted in the compensation execution sequence to generate the adjusted action time slot, and the corresponding compensation instruction is updated.

[0014] Preferably, after completing voltage compensation for one working cycle, the system also performs compensation effect retrospection and partition configuration update, including: Record the actual compensation performance data of each partition in the dynamic compensation partition cluster when it is driven during this working cycle; The actual compensation efficiency data is compared with the pre-stored compensation efficiency data of the dynamic compensation partition under similar historical working conditions, and the efficiency change rate is calculated. Based on the efficiency change rate, the parameters in the screening logic of the core compensation area are reverse-calibrated, including the calculation method of the spatial correlation degree or the correlation degree setting value. The reverse-calibrated screening logic is then applied to the core compensation area screening process for the target load in the next work cycle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By jointly analyzing historical compensation records and current power fluctuation trajectories, core compensation areas sensitive to compensation operations are identified. By digitizing past compensation experience and integrating it into current decision-making, the system can identify specific segments in the load curve that recur and where compensation can achieve significant stabilization. Unlike conventional methods that only respond to instantaneous over-limits, this approach endows the system with experience-driven capabilities, shifting the identification of compensation priorities from passive response to proactive prediction. Compensation actions are more forward-looking and targeted, enabling the pre-deployment of compensation resources in known sensitive fluctuation areas. This reduces compensation delays and repeated switching caused by simply following fluctuations, improving the efficiency and accuracy of responding to known fluctuation patterns.

[0016] The system calculates the expected compensation load for future periods for the identified primary compensation zones and dynamically classifies them based on thresholds. Short-term load forecasting is introduced as a key basis for zone priority allocation, upgrading compensation resources from spatial location to a two-dimensional assessment of spatial-temporal importance. The system not only knows which zones are located in critical areas but also predicts the weight of their compensation tasks in the coming period. This dynamic classification mechanism allows limited compensation capacity to be prioritized and precisely allocated to zones with the most urgent future loads. A clear compensation hierarchy of secondary, primary, and peripheral zones is formed, optimizing the scheduling logic of compensation capacity, avoiding the average allocation or blind investment of compensation resources, and achieving more refined and economical on-demand compensation under complex fluctuations, thus improving the adaptability and energy efficiency of the overall compensation system. Attached Figure Description

[0017] Figure 1 This is a timing diagram of the high-voltage acquisition and low-voltage compensation control system described in this invention. Figure 2 A flowchart for drawing the trajectory of electrical energy fluctuations; Figure 3 A flowchart for calculating the expected compensation load; Figure 4 A bar chart comparing expected load and threshold values ​​during the calibration phase of the high-voltage compensation control system's compensation zones. Figure 5 This is a voltage-current fluctuation correlation analysis diagram during the high-voltage power system operating condition acquisition phase. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 This invention provides a control system for high-voltage data acquisition and low-voltage compensation. The system includes: after system startup, a working condition parameter acquisition and trajectory drawing module begins operation, acquiring the working condition parameters of the target load carried by the high-voltage power compensation equipment within the current working cycle, and drawing the power fluctuation trajectory of the target load on the high-voltage side based on the working condition parameters. Subsequently, a core compensation area screening module intervenes, selecting core compensation areas sensitive to compensation operations based on the historical compensation records of the target load and the areas traversed by the power fluctuation trajectory. Next, a compensation zone positioning and calibration module begins operation, locating several compensation function zones located within the core compensation area from the compensation function zones of the high-voltage power compensation equipment, marking them as primary compensation zones, calculating the expected compensation load of the primary compensation zones in a preset future time period, and recalibrating primary compensation zones whose expected compensation load exceeds a predetermined threshold as secondary compensation zones. Afterwards, a peripheral compensation zone definition module defines the remaining compensation function zones in the high-voltage power compensation equipment that do not belong to the primary or secondary compensation zones as peripheral compensation zones. Finally, the dynamic compensation partition cluster integration module integrates the secondary compensation partition, primary compensation partition, and peripheral compensation partition to form a dynamic compensation partition cluster for performing this voltage compensation task.

[0020] In one embodiment of the present invention, see [reference] Figure 2 The operating parameters are analyzed to extract the high-voltage side voltage sampling sequence and current sampling sequence of the target load at multiple consecutive sampling times. Each voltage sampling point in the high-voltage side voltage sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding voltage location point set. Each current sampling point in the current sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding current location point set. The voltage location point set and the current location point set are spatiotemporally aligned and fused to generate a series of timestamped hybrid location points. The hybrid location points are connected in chronological order to form the power fluctuation trajectory of the target load on the high-voltage side.

[0021] Based on the historical compensation records of the target load, the specific process for selecting core compensation areas sensitive to compensation operations within the area traversed by the power fluctuation trajectory involves retrieving high-voltage side compensation operation records of the target load over multiple past operating cycles from the database of the high-voltage power compensation equipment. The specific compensation function partitions affected by each compensation operation are extracted from these high-voltage side compensation operation records and defined as historical active partitions. The spatial correlation between each compensation function partition covered by the power fluctuation trajectory and all historical active partitions is calculated. Compensation function partitions with spatial correlation higher than a set correlation value are selected, and the continuous physical area formed by these selected compensation function partitions is identified as the core compensation area sensitive to compensation operations.

[0022] In practical implementation, when plotting the power fluctuation trajectory of the target load on the high-voltage side based on operating parameters, the operating parameter acquisition and trajectory plotting module first parses the operating parameters acquired in real time from the high-voltage side sensor network, extracting the high-voltage side voltage sampling sequence and high-voltage side current sampling sequence of the target load within a complete sampling period. The voltage sampling sequence contains voltage amplitude and phase angle data collected at fixed time intervals, while the current sampling sequence contains current amplitude and phase angle data at the corresponding moment. Each voltage sampling point in the high-voltage side voltage sampling sequence is mapped to its corresponding coordinate position on the high-voltage side physical topology diagram of the high-voltage power compensation equipment, based on its corresponding grid measurement point identifier, thereby generating a voltage location point set. Each point in the voltage location point set carries voltage amplitude, phase angle, and timestamp information. Similarly, each current sampling point in the high-voltage side current sampling sequence is mapped to the same high-voltage side physical topology diagram, generating a current location point set. Each point in the current location point set contains current amplitude, phase angle, and timestamp information. The voltage and current location point sets are spatiotemporally aligned and fused. This process pairs voltage and current location points at the same time based on the same timestamp, and then spatially averages or weights the paired coordinates to generate a series of mixed location points with unified timestamps and spatial coordinates. Following the chronological order of the timestamps, all mixed location points are sequentially connected to form a dynamically evolving trajectory line on the high-voltage side physical topology diagram. This trajectory line represents the power fluctuation trajectory of the target load on the high-voltage side.

[0023] In some embodiments, when filtering core compensation areas based on historical compensation records of the target load, the core compensation area filtering module retrieves high-voltage side compensation operation records of the target load over a preset number of working cycles from the data storage unit of the high-voltage power compensation equipment. These high-voltage side compensation operation records store the occurrence time, location, and compensation amount of each compensation action in structured data format. A unique identifier for the specific compensation function partition affected by each compensation operation is extracted from the high-voltage side compensation operation records. These extracted compensation function partitions are defined as historically active partitions, and all historically active partitions constitute a set of historically active partitions. The spatial correlation degree between each compensation function partition covered by the power fluctuation trajectory and all historically active partitions is calculated. This spatial correlation degree quantifies the spatial proximity and interaction strength between the partition and the historically active area. The spatial correlation degree ω is calculated using the following formula: in: This represents the spatial correlation of the j-th evaluated compensation functional partition. This indicates the total number of historically active partitions. Let represent the Euclidean distance between the j-th evaluated partition and the i-th historically active partition in the high-voltage side physical topology. This is a preset distance sensitivity coefficient used to adjust the weight of distance factors on the correlation degree. All compensation functional zones with a spatial correlation degree ω higher than the preset correlation degree setting are selected. Optionally, the correlation degree setting can be dynamically adjusted based on system operating experience or optimization objectives. On the high-voltage side physical topology diagram, these selected compensation functional zones with high spatial correlation are spatially aggregated, merging geographically adjacent or electrically closely connected zones. Finally, this continuous physical area composed of the selected compensation functional zones is identified as the core compensation area sensitive to compensation operations.

[0024] In one embodiment of the present invention, see [reference] Figure 3 Pattern recognition is performed on the historical load curves to predict the load change trend line of the target load within the preset future time period. The load change trend line is then matched with the standard compensation capacity of each primary compensation zone to calculate the compensation amount that each primary compensation zone needs to bear within the preset future time period; this compensation amount is the expected compensation load.

[0025] The specific process of recalibrating primary compensation partitions whose expected compensation load exceeds a predetermined threshold as secondary compensation partitions involves setting a dynamic load threshold associated with the standard compensation capacity for each primary compensation partition. The calculated expected compensation load for each primary compensation partition is compared with its corresponding dynamic load threshold. Primary compensation partitions whose expected compensation load consistently exceeds their corresponding dynamic load threshold are removed from the primary compensation partition list of the dynamic compensation partition cluster and added to the secondary compensation partition list, thus completing the recalibration.

[0026] In practical implementation, when calculating the expected compensation load of the primary compensation zone within a preset future time period, the compensation zone positioning and calibration module obtains historical load curves of the target load for several complete working cycles set before the current working cycle from the historical database of the high-voltage power compensation equipment. These historical load curves record active power, reactive power, and voltage and current information for each historical moment in the form of time-series data. Pattern recognition is performed on the acquired historical load curves. By analyzing the load pattern characteristics of the historical load curves at the same time of day and the same date of week, periodic patterns, trend patterns, and random fluctuation components are identified. A prediction model is constructed based on the identified patterns. Using the constructed prediction model, the estimated load value of the target load at each sampling time point within the preset future time period is calculated. These estimated load values ​​are connected in chronological order to form a load change trend line characterizing future load changes. The specific implementation method for using the constructed prediction model to calculate the target load estimate at each sampling time point within a preset future period includes: The system first performs deep pattern recognition on the acquired historical load curves to identify periodic patterns such as daily and weekly periodicity, trend patterns such as long-term slow rise or fall, and random fluctuation components in the load data; Based on these identified patterns, the prediction model is constructed as a comprehensive time series predictor. It analyzes similar time periods in historical data corresponding to future sampling time points, applies trend extrapolation techniques to capture the long-term direction of load changes, and uses smoothing methods to suppress the impact of random fluctuations, thereby generating a stable load estimate for each future sampling time point; All these load estimates are linearly connected according to the chronological order of the sampling time points to form a smooth and continuous load change trend line, providing accurate input data for subsequent matching analysis with the standard compensation capacity of the primary compensation zone.

[0027] In some embodiments, a matching analysis is performed between the load change trend line and the standard compensation capacity of each primary compensation zone. The matching analysis process involves decomposing the load change trend line into local load components that are electrically associated with each primary compensation zone. For each primary compensation zone, the range of change, fluctuation frequency, and power factor characteristics of the corresponding local load component in the load change trend line are analyzed over a future period. The compensation amount that each primary compensation zone needs to bear in a preset future period is calculated; this compensation amount is the expected compensation load. The calculation process is based on the adaptation relationship between the reactive power demand of the local load components and the standard compensation capacity of the primary compensation zone. It can be understood that the expected compensation load η can be quantitatively evaluated using the following formula: in: This represents the expected compensation load of the k-th primary compensation zone. and The start and end times of the preset future time period are defined. This represents the predicted active power local load component mapped to the associated line of the k-th primary compensation zone at time t. This represents the predicted load power factor angle at time t. This represents the standard compensation capacity of the k-th primary compensation partition. It is the tangent function, and the formula calculates the cumulative effect of the ratio of reactive power demand to zone capacity based on predicted load over a future period by integration.

[0028] The specific process of recalibrating primary compensation partitions whose expected compensation load exceeds a predetermined threshold as secondary compensation partitions involves setting a dynamic load threshold associated with the standard compensation capacity for each primary compensation partition. The dynamic load threshold is a product of a proportional coefficient and the standard compensation capacity. The calculated expected compensation load for each primary compensation partition is then compared numerically with its corresponding dynamic load threshold. In practice, this comparison is continuous, with the system monitoring whether the expected compensation load consistently exceeds its corresponding dynamic load threshold within a preset future time period. Optionally, the criterion for continuous exceedance could be that the expected compensation load is higher than the dynamic load threshold for more than 80% of the sampling points in the future time period. Primary compensation partitions whose expected compensation load consistently exceeds their corresponding dynamic load threshold are removed from the primary compensation partition list of the dynamic compensation partition cluster, and their unique identifiers are added to the secondary compensation partition list, completing the recalibration. In some embodiments, recalibration triggers an update of the partition attribute flag and notifies the dynamic compensation partition cluster integration module to synchronize the cluster structure. It can be understood that by comparing the expected compensation load with the dynamic load threshold, the system can distinguish partitions with different compensation pressures and upgrade primary compensation partitions with higher load pressures to secondary compensation partitions of greater concern.

[0029] In one embodiment of the present invention, in the global topology network of the high-voltage power compensation equipment, an initial network model of the dynamic compensation partition cluster is established, with each secondary compensation partition, primary compensation partition, and peripheral compensation partition as nodes. The frequency of cooperative actions between any two nodes in the initial network model of the dynamic compensation partition cluster in historical compensation data is analyzed. Based on the frequency of cooperative actions, a weight is assigned to each connecting edge in the initial network model of the dynamic compensation partition cluster, generating a weighted optimized network model. In the weighted optimized network model, the tree structure connecting all nodes with the lowest total weight value is found and used as the final cooperative topology of the dynamic compensation partition cluster.

[0030] The specific process for determining the compensation execution sequence of each partition in the dynamic compensation partition cluster based on the final cooperative topology is as follows: In the final cooperative topology, a secondary compensation partition is selected as the starting node for compensation execution. Starting from the starting node, a depth-first traversal is performed along the edges of the final cooperative topology, recording the order in which each node is visited during the traversal. Based on this order and combined with the node type attributes, the compensation execution sequence of the dynamic compensation partition cluster is generated, wherein the node type attributes include secondary compensation partition, primary compensation partition, and outer compensation partition.

[0031] In practical implementation, when optimizing the configuration of the dynamic compensation partition cluster, the system abstracts each secondary compensation partition, primary compensation partition, and peripheral compensation partition contained in the global topology network digital model of the high-voltage power compensation equipment as an independent node. Node attributes record the partition's identifier, type, spatial coordinates, and electrical parameters. Based on the actual electrical connection relationships of the high-voltage power compensation equipment, connection edges are established between nodes with direct electrical connections or strong coupling relationships, thus forming the initial network model of the dynamic compensation partition cluster. The frequency of cooperative actions between any two nodes in the initial network model of the dynamic compensation partition cluster is analyzed in historical compensation data. The frequency of cooperative actions is calculated by retrieving historical compensation records and counting the number of times the partitions represented by the two nodes were simultaneously or sequentially activated in the same compensation task over multiple past working cycles, and then normalizing the number of times to the total number of compensation tasks.

[0032] In some embodiments, weights are assigned to each connection edge in the initial network model of the dynamically compensated partition cluster based on the frequency of cooperative actions, generating a weighted optimized network model. The weight value of the connection edge represents the degree of cooperation and expected efficiency between two partitions. It can be understood that the weight assignment follows the rule that the higher the frequency of cooperative actions, the lower the weight value of the connection edge, to encourage partitions with historically close cooperation to prioritize establishing connections in subsequent collaborations. For example, connection edge weights... The calculation can be performed using the following formula: in: This represents the weight of the edge connecting node m and node n. This represents the frequency of historical collaborative actions between the partitions represented by node m and node n. The base is a constant greater than 1. This formula results in lower weight values ​​for higher frequencies of cooperative actions. In a weighted optimization network model, the minimum spanning tree algorithm is applied to find a tree topology that connects all nodes and minimizes the sum of the weights of all connected edges. This tree topology is the final cooperative topology of the dynamically compensated partitioned cluster.

[0033] When determining the compensation execution sequence for each partition in the dynamic compensation partition cluster based on the final cooperative topology, a secondary compensation partition is selected as the starting node for compensation execution according to a preset rule within the final cooperative topology. Optionally, the selection rule could be to choose the secondary compensation partition with the highest expected compensation load, or to choose the secondary compensation partition located at the center of the final cooperative topology. Starting from the starting node, a depth-first traversal is performed along the tree edges of the final cooperative topology. The depth-first traversal recursively visits each unvisited adjacent node in a fixed direction until all nodes have been visited once. The order in which each node is visited during the traversal is recorded, generating an ordered node visit sequence. Based on the order of nodes in the node visit sequence and combined with the type attribute of each node, a compensation execution sequence for the dynamic compensation partition cluster is generated. The compensation execution sequence is an ordered list, where each item contains the identifier of a partition and its position number in the sequence. The node type attribute includes secondary compensation partition, primary compensation partition, and outer compensation partition. In some embodiments, the generation of the compensation execution sequence also considers the node type, ensuring that secondary compensation partitions are relatively early in the sequence.

[0034] In one embodiment of the present invention, according to the compensation execution sequence, compensation instructions containing partition identifiers and action time slots are sequentially sent to each partition in the sequence. Status feedback signals from each partition are received and parsed, the status feedback signals containing partition identifiers and real-time compensation amounts. The received real-time compensation amounts are compared with the theoretically expected compensation amounts calculated based on the operating parameters to generate a real-time compensation error. Based on the real-time compensation error, the action time slots in the compensation instructions for subsequent partitions to be acted upon are dynamically adjusted.

[0035] The specific process of dynamically adjusting the action time slots in the compensation instructions of subsequent partitions based on the real-time compensation error is as follows: A baseline allowable compensation error range is set. When the real-time compensation error is within the baseline allowable range, the original action time slots of all subsequent partitions in the compensation execution sequence remain unchanged. When the real-time compensation error exceeds the baseline allowable range, an action time slot adjustment amount is calculated based on the direction and magnitude of the excess. This adjustment amount is then added to the original action time slot of the next partition in the compensation execution sequence to generate the adjusted action time slot, and the corresponding compensation instruction is updated.

[0036] In practice, a structured compensation command is sent sequentially to each partition in the sequence. This command includes a unique identifier for the target partition and a specified time slot for initiating the compensation action. The compensation command is transmitted to the corresponding local control unit of each partition via the control bus or communication network within the high-voltage power compensation equipment. Upon receiving the compensation command, the local control unit of each partition performs switching or adjustment operations within the specified time slot and sends a status feedback signal to the central processing unit of the control system. The system receives and parses the status feedback signals from each partition. These signals are data messages containing the partition identifier and the actual real-time compensation amount output by that partition during the compensation action. The received real-time compensation amount is compared with the theoretical expected compensation amount calculated based on the current operating parameters. The theoretical expected compensation amount is the ideal compensation value for each partition calculated based on the current high-voltage side voltage and current sampling sequence and load prediction model. The difference between the real-time compensation amount and the theoretical expected compensation amount is calculated, generating a signed real-time compensation error. A positive real-time compensation error indicates insufficient compensation, while a negative error indicates overcompensation. Based on the real-time compensation error, the action slots in the compensation instructions of the pending action partitions in the compensation execution sequence that have not yet been executed are dynamically adjusted.

[0037] In some embodiments, a baseline compensation error allowable range is set, defining the upper and lower limits of the acceptable real-time compensation error amount. When the real-time compensation error amount is within the baseline compensation error allowable range, it indicates that the current compensation effect meets expectations, and the system maintains the original scheduled action slots of all subsequent partitions in the compensation execution sequence unchanged; subsequent partitions will act sequentially according to the initially planned time points. When the real-time compensation error amount exceeds the baseline compensation error allowable range, the system calculates an action slot adjustment amount based on the direction and magnitude of the exceedance. Refer to Table 1 for the judgment logic of the real-time compensation error amount exceeding the baseline compensation error allowable range.

[0038] Table 1: Logic Table for Judging the Allowable Range of Baseline Compensation Error In practical implementation, the action time slot adjustment amount ΔT is calculated based on the direction and magnitude of the excess, and the following formula can be used: in: This represents the calculated action time slot adjustment amount. It is a symbolic function. This indicates the amount of compensation error in real time. The boundary values ​​represent the allowable range of the reference compensation error. This is a preset adjustment coefficient used to map the error magnitude to a time adjustment amount. It can be understood that this formula ensures that both the direction and magnitude of the adjustment amount are related to the extent of the error. The calculated action slot adjustment amount ΔT is superimposed on the original action slot of the next partition to be acted in the compensation execution sequence to generate the adjusted new action slot. The control system immediately generates a new compensation command, which includes the identifier of the next partition to be acted and the adjusted new action slot, and sends it through the communication network to update the original command. In some embodiments, this adjustment process is iterative; after each partition's compensation action is executed and feedback is received, the real-time compensation error is reassessed, and the action slots of subsequent partitions are adjusted accordingly.

[0039] See Figure 4 This is a bar chart comparing expected load and threshold values ​​during the compensation zone calibration phase of a high-voltage compensation control system. Except for zone 5, the expected load of the other five zones exceeds the dynamic threshold and needs to be calibrated as "secondary compensation zones." Zone 4 has a significantly higher expected load than other zones and is the core load area for this compensation; its expected load is below the threshold, classifying it as a "primary compensation zone." This type of chart is used for load assessment during the compensation zone calibration phase, helping the system quickly identify high-load secondary zones. This provides a basis for the subsequent integration of dynamic compensation zone clusters and the planning of compensation execution sequences, ensuring that high-voltage compensation resources are preferentially allocated to load-sensitive areas.

[0040] In one embodiment of the present invention, after voltage compensation for one work cycle is completed, the actual compensation performance data of each partition in the dynamic compensation partition cluster when it is driven during the current work cycle is recorded. The actual compensation performance data is compared with pre-stored compensation performance data of the dynamic compensation partition under similar historical operating conditions to calculate the performance change rate. Based on the performance change rate, the parameters in the core compensation region screening logic are reverse-calibrated, including the calculation method of the spatial correlation degree or the correlation degree setting value. The reverse-calibrated screening logic is applied to the core compensation region screening process for the target load in the next work cycle.

[0041] In practical implementation, after completing voltage compensation for one work cycle, the system performs compensation effect retrospective analysis and partition configuration update, recording the actual compensation efficiency data of each partition in the dynamic compensation partition cluster when it is driven during the current work cycle. This actual compensation efficiency data includes the partition's response delay time, the steady-state value and fluctuation range of the actual output compensation, and the power loss value during the compensation process. This data is collected by the local monitoring unit of each partition and uploaded to the system's central database for storage via the communication network. The recorded actual compensation efficiency data is compared with the pre-stored compensation efficiency data of the dynamic compensation partition under similar historical operating conditions. The comparison operation first uses a pattern matching algorithm to find several historical operating conditions most similar to the current work cycle in terms of load characteristics, operating time, and grid state from the historical database. The historical compensation efficiency data of the corresponding partitions under these similar historical operating conditions are extracted as the comparison benchmark.

[0042] In some embodiments, calculating the performance change rate is a core step in compensation effect retrospection and partition configuration update. The performance change rate quantifies the magnitude of change in the actual compensation performance in the current period relative to the performance level under similar historical operating conditions. It can be understood that for each partition in the dynamic compensation partition cluster, its performance change rate... The calculation can be performed using the following formula: in: This represents the rate of change in performance of the q-th partition. This represents the key performance indicator value in the actual compensation performance data recorded by the q-th partition in the current work cycle. This represents the average value of the same key performance indicator in the historical compensation performance data of the q-th partition under similar historical operating conditions. It is based on the calculated performance change rate. The parameters in the selection logic of the core compensation region are reverse-calibrated. These parameters include the calculation method or setting value of spatial correlation. The reverse calibration process involves analyzing the efficiency change rate. The distribution and trend of spatial correlation are analyzed. If the efficiency change rate of multiple partitions shows a systematic negative growth, it indicates that the current screening logic has included some poorly performing or slow-responding partitions in the core compensation area. In this case, the system will adjust the calculation method of spatial correlation, for example, by introducing a weighting factor of the historical efficiency of the partitions when calculating spatial correlation, so that partitions with high historical efficiency can obtain higher correlation scores in the calculation.

[0043] Optionally, another reverse calibration method is to directly adjust the correlation setpoint. If it is necessary to tighten the scope of the core compensation area, the correlation setpoint is increased; if it is necessary to expand the scope, the correlation setpoint is decreased. The filtering logic after reverse calibration is applied to the core compensation area filtering process of the target load in the next work cycle. This means that when the system starts the workflow of the operating condition parameter acquisition and trajectory drawing module and the core compensation area filtering module, the correlation calculation rules or thresholds used to determine the core compensation area have been updated based on the previous execution effect. In some embodiments, reverse calibration is a continuously iterative self-optimizing process, enabling the filtering of the core compensation area to dynamically adapt to the impact of factors such as changes in the power grid structure and equipment aging.

[0044] See Figure 5 This is a voltage-current fluctuation correlation analysis chart from the high-voltage power system operating condition acquisition phase. The voltage and current fluctuation trends are highly consistent, conforming to the power system load characteristic of "positive correlation between voltage and current changes." The voltage fluctuation amplitude is greater than the current fluctuation, reflecting the system load's higher sensitivity to voltage changes. 20ms and 70ms are significant fluctuation points, requiring close attention to load changes during these periods, serving as core reference intervals for subsequent compensation zone selection. This type of chart is used for power fluctuation analysis during the operating condition parameter acquisition phase, helping the system identify voltage-current correlation patterns and fluctuation-sensitive periods. It provides data for subsequent power fluctuation trajectory mapping and core compensation area selection, ensuring that high-voltage compensation operations accurately match load fluctuation characteristics.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A control system for high-voltage acquisition and low-voltage compensation, characterized in that, The system includes: The operating condition parameter acquisition and trajectory drawing module is used to acquire the operating condition parameters of the target load carried by the high-voltage power compensation equipment in the current working cycle, and draw the power fluctuation trajectory of the target load on the high-voltage side based on the operating condition parameters. The core compensation area screening module is used to screen out the core compensation area that is sensitive to the compensation operation based on the historical compensation records of the target load in the area through which the power fluctuation trajectory passes. The compensation zone positioning and calibration module is used to locate several compensation functional zones located in the core compensation area from the compensation functional zones of the high-voltage power compensation equipment, mark them as primary compensation zones, calculate the expected compensation load of the primary compensation zones in a preset future time period, and recalibrate the primary compensation zones whose expected compensation load exceeds a predetermined threshold as secondary compensation zones. The peripheral compensation zone definition module is used to define the remaining compensation function zones in the high-voltage power compensation equipment that do not belong to the primary compensation zone and the secondary compensation zone as peripheral compensation zones. The dynamic compensation partition cluster integration module is used to integrate the secondary compensation partition, primary compensation partition and peripheral compensation partition to form a dynamic compensation partition cluster for performing this voltage compensation task.

2. The control system for high-voltage acquisition and low-voltage compensation according to claim 1, characterized in that, Based on the aforementioned operating parameters, plotting the power fluctuation trajectory of the target load on the high-voltage side includes: The operating parameters are analyzed to extract the high-voltage side voltage sampling sequence and current sampling sequence of the target load at multiple consecutive sampling times; Each voltage sampling point in the high-voltage side voltage sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding set of voltage location points. Each current sampling point in the current sampling sequence is mapped to the high-voltage side physical topology of the high-voltage power compensation equipment to generate a corresponding set of current location points. The voltage location point set and the current location point set are spatiotemporally aligned and fused to generate a series of mixed location points with timestamps; By connecting the mixed location points in chronological order, the power fluctuation trajectory of the target load on the high-voltage side is formed.

3. The control system for high-voltage acquisition and low-voltage compensation according to claim 2, characterized in that, Based on the historical compensation records of the target load, the core compensation regions sensitive to compensation operations are selected from the areas traversed by the power fluctuation trajectory, including: Retrieve the high-voltage side compensation operation records of the target load in the past multiple working cycles from the database of the high-voltage power compensation equipment; Extract the specific compensation function partition that each compensation operation is applied to from the high-voltage side compensation operation record, and define it as the historical active partition; Calculate the spatial correlation between each compensation function partition covered by the power fluctuation trajectory and all historically activated partitions; Compensation function zones with spatial correlation higher than the correlation set value are selected, and the continuous physical area composed of these selected compensation function zones is identified as the core compensation area that is sensitive to compensation operations.

4. The control system for high-voltage acquisition and low-voltage compensation according to claim 1, characterized in that, Calculating the expected compensation load of the primary compensation zone in a preset future time period includes: Obtain the historical load curves of the target load for several complete working cycles prior to the current working cycle; Pattern recognition is performed on the historical load curve to predict the load change trend line of the target load within the preset future time period; By matching the load change trend line with the standard compensation capacity of each primary compensation zone, the amount of compensation that each primary compensation zone needs to bear in the preset future time period is calculated, and the amount of compensation is the expected compensation load.

5. The control system for high-voltage acquisition and low-voltage compensation according to claim 4, characterized in that, Reclassifying the primary compensation partition where the expected compensation load exceeds a predetermined threshold as a secondary compensation partition includes: A dynamic load threshold associated with the standard compensation capacity is set for each of the primary compensation zones; The calculated expected compensation load for each primary compensation zone is compared with its corresponding dynamic load threshold. The primary compensation partitions whose expected compensation load continuously exceeds their corresponding dynamic load thresholds are removed from the primary compensation partition list of the dynamic compensation partition cluster and added to the secondary compensation partition list to complete the recalibration.

6. The control system for high-voltage acquisition and low-voltage compensation according to claim 1, characterized in that, The system also includes optimizing the configuration of the dynamic compensation partition cluster, including: In the global topology network of the high-voltage power compensation equipment, an initial network model of the dynamic compensation partition cluster is established with each secondary compensation partition, primary compensation partition, and peripheral compensation partition as nodes. Analyze the frequency of collaborative actions between any two nodes in the initial network model of the dynamic compensation partition cluster in historical compensation data; Based on the frequency of the coordinated actions, the weight of each connection edge in the initial network model of the dynamic compensation partition cluster is assigned to generate a weighted optimized network model. In the weighted optimized network model, the tree structure that connects all nodes and has the lowest total weight value is found as the final cooperative topology of the dynamic compensation partition cluster.

7. A high-voltage acquisition and low-voltage compensation control system according to claim 6, characterized in that, Based on the final collaborative topology, the compensation execution sequence for each partition in the dynamic compensation partition cluster is determined, including: In the final collaborative topology, a secondary compensation partition is selected as the starting node for compensation execution; Starting from the initial node, perform a depth-first traversal along the edges of the final cooperative topology, and record the order in which each node is visited during the traversal. Based on the aforementioned order and in conjunction with the node type attributes, a compensation execution sequence for the dynamic compensation partition cluster is generated, wherein the node type attributes include secondary compensation partitions, primary compensation partitions, and peripheral compensation partitions.

8. The control system for high-voltage acquisition and low-voltage compensation according to claim 7, characterized in that, Drive the dynamic compensation partition cluster to perform voltage compensation according to the compensation execution sequence, including: According to the compensation execution sequence, compensation instructions containing partition identifiers and action slots are sent sequentially to each partition in the sequence; Receive and parse status feedback signals from each partition, the status feedback signals including partition identifiers and real-time compensation amounts; The received real-time compensation amount is compared with the theoretical expected compensation amount calculated based on the operating condition parameters to generate a real-time compensation error amount. Based on the real-time compensation error, the action time slots in the compensation instructions of the subsequent partitions to be acted upon are dynamically adjusted.

9. A control system for high-voltage acquisition and low-voltage compensation according to claim 8, characterized in that, Based on the real-time compensation error, the dynamic adjustment of the action time slots in the compensation instructions for subsequent partitions to be acted upon includes: Define a baseline compensation error allowable range; When the real-time compensation error is within the allowable range of the baseline compensation error, the original action time slots of all subsequent partitions in the compensation execution sequence remain unchanged. When the real-time compensation error exceeds the allowable range of the reference compensation error, an action slot adjustment amount is calculated based on the direction and magnitude of the excess. The action time slot adjustment amount is superimposed on the original action time slot of the next partition to be acted in the compensation execution sequence to generate the adjusted action time slot, and the corresponding compensation instruction is updated.

10. A control system for high-voltage acquisition and low-voltage compensation according to claim 1, characterized in that, After completing voltage compensation for one working cycle, the system also performs compensation effect retrospective analysis and partition configuration update, including: Record the actual compensation performance data of each partition in the dynamic compensation partition cluster when it is driven during this working cycle; The actual compensation efficiency data is compared with the pre-stored compensation efficiency data of the dynamic compensation partition under similar historical working conditions, and the efficiency change rate is calculated. Based on the efficiency change rate, the parameters in the screening logic of the core compensation area are reverse-calibrated, including the calculation method of the spatial correlation degree or the correlation degree setting value. The reverse-calibrated screening logic is then applied to the core compensation area screening process for the target load in the next work cycle.

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