An all-electronic flexible line voltage regulator voltage control method, system, device and storage medium

Abstract

The embodiment of the application discloses a kind of full electronic flexible line voltage regulator voltage control method, system, equipment and storage medium, method includes: the voltage and current signal of full electronic flexible line voltage regulator access point is collected, obtains the dynamic response characteristic of line under different frequency;Based on dynamic response characteristic, for each voltage regulator, frequency action potential function is constructed on frequency axis;According to frequency action potential function, the action interval on frequency axis is adaptively evolved to form stable action interval;Stable action interval is determined as the frequency domain responsibility interval of each voltage regulator, and the voltage regulation loop of corresponding frequency band in voltage regulator is activated or inhibited;When line operating state changes, trigger the re-evolution of action interval, and synchronously update the control parameter of voltage regulator to corresponding frequency band voltage regulation loop.The application realizes the natural division of labor and responsibility attribution uniqueness of multiple voltage regulators in frequency domain, and improves the regulation efficiency.

Description

Technical Field

[0001] This application relates to the field of flexible AC power transmission and distribution technology in power systems, and in particular to a voltage control method, system, device and storage medium for a fully electronic flexible line voltage regulator. Background Technology

[0002] With the large-scale integration of renewable energy, the proportion of inverters in distribution networks is constantly increasing, leading to increased risks of subsynchronous / supersynchronous oscillations and exacerbated voltage fluctuations. Traditional fully electronic flexible line voltage regulators (series-type FACTS devices, such as distributed static series compensators) mostly adopt centralized or simple droop control, which cannot effectively cope with frequency domain coupling and conflicts when multiple devices coexist: simultaneous regulation by multiple devices in the same frequency band may amplify oscillations or cause over-regulation; and in wide frequency bands (such as 0.1-100 Hz), there is a lack of specialization, resulting in low suppression efficiency.

[0003] While existing technologies such as impedance reshaping, model predictive control, and distributed consensus protocols have applications, they are mostly applied to parallel devices or single frequency bands. They do not fully consider the dynamic response differences and adaptive division of labor of multiple series voltage regulators on the frequency axis, resulting in difficulty in achieving both voltage quality and system stability in scenarios with limited communication and variable operating states.

[0004] Therefore, a voltage control method capable of frequency domain self-organized division of labor is needed to improve system stability and regulation performance. Summary of the Invention

[0005] This application provides a voltage control method, system, device, and storage medium for an all-electronic flexible circuit voltage regulator, which realizes the natural division of labor and unique responsibility of multiple voltage regulators in the frequency domain, thereby improving system robustness and regulation efficiency.

[0006] This application provides the following solution:

[0007] According to a first aspect, a voltage control method for a fully electronic flexible line voltage regulator is provided. The method includes: acquiring voltage and current signals at the access point of the fully electronic flexible line voltage regulator, and performing broadband analysis on the signals to obtain the dynamic response characteristics of the line at different frequencies; based on the dynamic response characteristics, constructing a frequency action potential function for each voltage regulator on the frequency axis, wherein the frequency action potential function characterizes the adjustment advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency; according to the frequency action potential function, adaptively evolving the action range on the frequency axis according to a preset frequency attraction and frequency repulsion evolution rule, so that different voltage regulators form mutually separated stable action ranges in the frequency domain; determining the stable action range as the frequency domain responsibility range of each voltage regulator, and activating or suppressing the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range; when the line operating state changes, causing the frequency action potential function to change, triggering the re-evolution of the action range, and synchronously updating the control parameters of the voltage regulator for the voltage regulation loop of the corresponding frequency band.

[0008] According to one achievable method in an embodiment of this application, broadband analysis is performed on the signal to obtain the dynamic response characteristics of the line at different frequencies, including: introducing amplitude-limited perturbation adjustment actions through voltage regulator control commands at different time scales without changing the normal operating state of the line, so that distinguishable frequency excitation components are superimposed in the line response; acquiring the voltage and current response signals caused by the perturbation adjustment actions, and segmenting the response signals on the frequency axis to extract the mapping relationship between the voltage regulator output change and the line voltage response in each frequency band; based on the mapping relationship, constructing dynamic response characteristics that characterize the consistency of the line's response to the voltage regulator adjustment actions in each frequency band, wherein the dynamic response characteristics are used to reflect the controllability and coupling characteristics of the line's adjustment at different frequencies.

[0009] According to one achievable method in the embodiments of this application, based on the dynamic response characteristics, a frequency potential function is constructed for each voltage regulator on the frequency axis, including: dividing the frequency axis into multiple continuous local frequency units within a preset frequency range, and extracting the amplitude response, phase change trend, and equivalent impedance change direction of the voltage regulator in each local frequency unit; calculating the relative adjustment advantage index of the voltage regulator in the local frequency unit based on the dynamic response characteristics within the local frequency unit, wherein the relative adjustment advantage index is used to characterize the degree of adjustment adaptation of the voltage regulator to the frequency unit relative to other voltage regulators; normalizing the relative adjustment advantage index of each voltage regulator in the same frequency unit, and continuously mapping the normalization result along the frequency axis to form a frequency potential function that continuously changes on the frequency axis.

[0010] According to one achievable method in the embodiments of this application, the preset frequency attraction and frequency repulsion evolution rules include: when the frequency potential of a voltage regulator at the interval boundary shows an increasing trend, driving the interval boundary corresponding to the voltage regulator to move outward to expand its effective range; when the frequency potential difference between adjacent voltage regulators at the same interval boundary decreases or reverses, driving the corresponding interval boundary to retreat inward to form repulsion separation in the frequency domain.

[0011] According to one achievable method in the embodiments of this application, the effective range on the frequency axis is adaptively evolved to enable different voltage regulators to form mutually separated stable effective ranges in the frequency domain. This includes: setting dynamically adjustable boundaries for each effective range, and driving the boundaries to advance or retreat according to preset frequency attraction and repulsion evolution rules based on the gradient distribution of the frequency action potential function at the boundary and the potential difference between adjacent voltage regulators; continuously monitoring the stability indicators of each effective range, including the boundary movement rate and the degree of overlap between adjacent ranges; when the degree of overlap is lower than a preset threshold and the boundary movement tends to converge, the current effective range is determined as a stable effective range, and a unique frequency domain mutual exclusion identifier is assigned to it. The frequency domain mutual exclusion identifier is used to indicate the uniqueness of the control ownership of the stable effective range and serves as the basis for frequency domain responsibility division in subsequent operation.

[0012] According to one achievable method in the embodiments of this application, the stable operating range is determined as the frequency domain responsibility range of each voltage regulator, and the voltage regulation loops of the corresponding frequency bands inside the voltage regulator are activated or suppressed according to the frequency domain responsibility range. This includes: constructing a frequency domain responsibility confirmation module inside the voltage regulator to receive the frequency range description of the stable operating range and map it to a corresponding internal frequency band index set; based on the frequency band index set, performing frequency band association labeling on the voltage regulation control loops inside the voltage regulator so that each voltage regulation control loop corresponds to at least one controllable frequency band range; for voltage regulation control loops belonging to the frequency domain responsibility range, introducing regulation gain step by step according to a preset activation order, so that they transition from a suppressed state to a fully participating regulation activation state; for voltage regulation control loops not belonging to the frequency domain responsibility range, limiting the weight of their regulation output on the target frequency band, or switching them to a constrained regulation state that only maintains the stability of the reference voltage; during operation, continuously monitoring the actual operating frequency band of each voltage regulation control loop, and dynamically adjusting its activation level when its operating frequency band deviates from the corresponding frequency domain responsibility range.

[0013] According to one achievable method in the embodiments of this application, when a change in the line operating state causes a change in the frequency action potential function, the re-evolution of the action interval is triggered, including: analyzing the distribution of the change of the frequency action potential function on the frequency axis to identify the target frequency sub-interval that has changed significantly; based on the target frequency sub-interval, determining whether the corresponding action interval is directly affected by the change in the line operating state, and only unfreezing the stable frozen state of the affected action interval; initiating a local re-evolution process for the action interval that has been unfrozen, while keeping the interval boundary of the unaffected action interval unchanged.

[0014] According to a second aspect, a voltage control system for an all-electronic flexible line voltage regulator is provided. The system includes: a dynamic response characteristic acquisition unit configured to acquire voltage and current signals at the access points of the all-electronic flexible line voltage regulator and perform broadband analysis on the signals to obtain the dynamic response characteristics of the line at different frequencies; a frequency potential function construction unit configured to construct a frequency potential function for each voltage regulator on the frequency axis based on the dynamic response characteristics, wherein the frequency potential function characterizes the adjustment advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency; and a stable operating range construction unit configured to construct a stable operating range based on the frequency potential function. According to preset frequency attraction and repulsion evolution rules, the effective range on the frequency axis is adaptively evolved, so that different voltage regulators form mutually separated stable effective ranges in the frequency domain; the voltage regulation loop control unit is configured to determine the stable effective range as the frequency domain responsibility range of each voltage regulator, and activate or suppress the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range; the operating state change monitoring unit is configured to trigger the re-evolution of the effective range when the change of the line operating state causes the frequency action potential function to change, and synchronously update the control parameters of the voltage regulator for the voltage regulation loop of the corresponding frequency band.

[0015] According to a third aspect, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of the first aspects above.

[0016] According to a fourth aspect, an electronic device is provided, comprising: one or more processors; and a memory associated with the one or more processors, the memory being used to store program instructions that, when read and executed by the one or more processors, perform the steps of the method described in any one of the first aspects.

[0017] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0018] This application acquires the dynamic response characteristics of the line by collecting voltage and current signals at the access point and performing wideband analysis, thereby constructing a frequency-based action potential function for each voltage regulator. This function accurately characterizes the differences in the regulation advantages of the voltage regulator at different frequencies. Based on this, the action range is adaptively evolved according to preset frequency attraction and repulsion evolution rules, forming mutually separated stable action ranges, which are then defined as frequency domain responsibility ranges. This activates or suppresses the voltage regulation loops within the corresponding frequency bands of the voltage regulator. When changes in the line operating state cause changes in the potential function, the action range is re-evolved, and the control parameters are updated synchronously. This method achieves self-organized division of labor among multiple distributed voltage regulators in the frequency domain, avoiding regulation conflicts and wideband coupling problems, improving the robustness of voltage control and system stability. Especially in distribution networks with a high proportion of inverter power supply, it can effectively suppress sub / supersynchronous oscillations, shorten oscillation damping time, and improve voltage qualification rate.

[0019] Of course, any product implementing this application does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A flowchart illustrating the voltage control method for an all-electronic flexible circuit voltage regulator provided in this application embodiment;

[0022] Figure 2 A structural block diagram of the all-electronic flexible circuit voltage regulator voltage control system provided in the embodiments of this application;

[0023] Figure 3 A schematic block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0025] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0027] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0028] Figure 1 A flowchart illustrating a voltage control method for an all-electronic flexible circuit voltage regulator provided in this application embodiment. Figure 1 As shown, the method may include the following steps:

[0029] Step 101: Collect the voltage and current signals at the access point of the all-electronic flexible line voltage regulator, and perform broadband analysis on the signals to obtain the dynamic response characteristics of the line at different frequencies.

[0030] Step 102: Based on the dynamic response characteristics, construct a frequency action potential function for each voltage regulator on the frequency axis. The frequency action potential function characterizes the adjustment advantage or response sensitivity difference of each voltage regulator relative to other voltage regulators at the corresponding frequency.

[0031] Step 103: Based on the frequency action potential function, and according to the preset frequency attraction and frequency repulsion evolution rules, the action range on the frequency axis is adaptively evolved so that different voltage regulators form mutually separated stable action ranges in the frequency domain.

[0032] Step 104: Determine the stable operating range as the frequency domain responsibility range of each voltage regulator, and activate or suppress the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range.

[0033] Step 105: When the change in line operating state causes the frequency action potential function to change, the re-evolution of the action range is triggered, and the control parameters of the voltage regulator for the corresponding frequency band voltage regulation loop are updated synchronously.

[0034] As can be seen from the above process, this application obtains the dynamic response characteristics of the line by collecting voltage and current signals at the access point and performing wideband analysis, thereby constructing a frequency-based action potential function for each voltage regulator. This function accurately characterizes the differences in the regulation advantages of the voltage regulator at different frequencies. Based on this, according to the preset frequency attraction and repulsion evolution rules, the action range is adaptively evolved to form mutually separated stable action ranges, which are then determined as the frequency domain responsibility ranges. This activates or suppresses the voltage regulation loops within the corresponding frequency bands of the voltage regulator. When changes in the line operating state cause changes in the potential function, the action range is re-evolved, and the control parameters are updated synchronously. This method achieves self-organized division of labor among multiple distributed voltage regulators in the frequency domain, avoiding regulation conflicts and wideband coupling problems, improving the robustness of voltage control and system stability. Especially in distribution networks with a high proportion of inverter power supply, it can effectively suppress sub / supersynchronous oscillations, shorten oscillation damping time, and improve voltage qualification rate.

[0035] The following describes in detail each step of the above process and the effects that can be further produced, with reference to the embodiments. First, step 101, namely "acquiring the voltage and current signals of the access point of the all-electronic flexible line voltage regulator and performing broadband analysis on the signals to obtain the dynamic response characteristics of the line at different frequencies", will be described in detail with reference to the embodiments.

[0036] A fully electronic flexible line voltage regulator is a series-connected device based on power electronics technology used in power distribution networks to flexibly adjust voltage amplitude and phase angle. It is typically deployed at critical nodes of power lines to address voltage issues caused by load fluctuations or the integration of distributed energy resources. The core of this process lies in evaluating the interaction characteristics between the voltage regulator and the line through real-time signal acquisition and analysis, thereby providing fundamental data for subsequent control optimization.

[0037] First, the data acquisition process targets the voltage and current signals at the voltage regulator's connection point. These signals are electrical quantities at the direct connection point between the voltage regulator and the power line. The voltage signal reflects the potential difference and fluctuations in the line, while the current signal reflects power flow and load changes. These signals are acquired in real time using sensors or measurement modules to ensure high data accuracy and real-time performance, enabling the capture of both transient and steady-state behavior of the line.

[0038] Next, broadband analysis is performed on the acquired signal. This is a signal processing technique designed to decompose voltage and current signals into a wide frequency range, typically covering the spectrum from low frequencies such as a few tenths of a hertz to high frequencies such as several kilohertz. Analytical methods may employ tools such as Fourier transform, wavelet transform, or filter banks to convert the time-domain signal into a frequency-domain representation, thereby revealing the amplitude, phase, and energy distribution of different frequency components in the signal.

[0039] As an implementable approach, this application performs broadband analysis on the signal to obtain the dynamic response characteristics of the line at different frequencies, including: introducing amplitude-limited perturbation adjustment actions through voltage regulator control commands at different time scales without changing the normal operating state of the line, so that distinguishable frequency excitation components are superimposed on the line response; acquiring the voltage and current response signals caused by the perturbation adjustment actions, and projecting the response signals segment by segment on the frequency axis to extract the mapping relationship between the voltage regulator output change and the line voltage response in each frequency band; based on the mapping relationship, constructing dynamic response characteristics that characterize the consistency of the line's response to the voltage regulator adjustment actions in each frequency band, wherein the dynamic response characteristics are used to reflect the controllability and coupling characteristics of the line's adjustment at different frequencies.

[0040] Specifically, firstly, during the analysis process, amplitude-limited perturbation adjustments need to be introduced through voltage regulator control commands without altering the normal operating state of the line. These perturbations are designed to be applied at different time scales; for example, short periods are used for high-frequency excitation, and long periods for low-frequency excitation. The amplitude of the perturbations is strictly controlled within a very small range to avoid significantly affecting voltage quality or power transmission. In this way, distinguishable frequency excitation components are superimposed on the line's response signal. These components act like "probes" to help identify the system's sensitivity to specific frequencies.

[0041] Subsequently, voltage and current response signals caused by the perturbation adjustment action are acquired. These response signals capture the instantaneous changes in the line after the voltage regulator applies a perturbation, including voltage fluctuations and current adjustments. These signals are recorded in real time using a high sampling rate measurement device to ensure data integrity.

[0042] Next, the response signal is segmented and projected onto the frequency axis. This is a frequency domain transformation technique that decomposes the time-domain response into multiple frequency segments, such as a continuous range from low to high frequencies. Within each segment, the mapping relationship between the regulator output change and the line voltage response is extracted. This mapping reflects how the regulator's actions affect the line voltage, such as the correspondence between output gain and response delay, helping to quantify the causal relationships of the system at a specific frequency.

[0043] Finally, based on the extracted mapping relationships, dynamic response characteristics are constructed to characterize the consistency of the line's response to the voltage regulator's adjustment actions across different frequency bands. These characteristics may include response consistency coefficients, phase matching degrees, or impedance equivalent values, reflecting the line's controllability and coupling characteristics at different frequencies. For example, at some frequencies, a highly consistent response indicates strong controllability, while at other frequencies, tight coupling may indicate potential oscillation risks. This feature construction provides quantitative support for the coordinated control of multiple voltage regulators, improving the overall system's stability and adaptability.

[0044] By using wideband analysis, the dynamic response characteristics of the line at different frequencies are ultimately obtained. These characteristics include indicators such as impedance changes, response sensitivity, and coupling strength in each frequency band. For example, in the low-frequency band, these characteristics may reflect the stability of voltage regulation, while in the mid-to-high-frequency band, they may reveal harmonic or oscillation risks. This feature extraction helps identify the regulation advantage area of ​​the voltage regulator, provides a quantitative basis for the coordinated control of multiple devices, and ultimately improves the stability and efficiency of the system.

[0045] The following describes in detail step 102, namely, "based on the dynamic response characteristics, constructing a frequency action potential function for each voltage regulator on the frequency axis, wherein the frequency action potential function characterizes the adjustment advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency," with reference to the embodiments.

[0046] This step describes the process of constructing a unique frequency-dependent potential function for each all-electronic flexible line voltage regulator on the frequency axis, utilizing previously obtained dynamic response characteristics. This function is essentially a mathematical model used to quantify the performance differences of a voltage regulator relative to other regulators at specific frequency points or ranges, thus providing a basis for differentiated multi-machine collaborative control. Through this construction method, the system can identify which voltage regulator is more advantageous at which frequencies, helping to achieve optimized division of labor in the frequency domain.

[0047] The construction process first requires dividing the entire frequency axis into multiple continuous local frequency units within a preset frequency range. These units are designed to be continuous and non-overlapping to cover the entire spectrum from low to high frequencies. Within each local frequency unit, specific indicators for the voltage regulator are extracted from the dynamic response characteristics, including amplitude response intensity, phase change trend, and equivalent impedance change direction. These indicators reflect the voltage regulator's response characteristics to line disturbances within that unit.

[0048] Next, based on the extracted dynamic response characteristics of the local frequency unit, the relative regulation advantage index of the voltage regulator within that unit is calculated. This index is derived by comparing the response data of this voltage regulator with those of other voltage regulators and is used to characterize its regulation adaptability. For example, if a voltage regulator has a faster and more stable response in a certain frequency unit, its advantage index will be higher, thus highlighting its potential dominant role at that frequency.

[0049] Next, the relative regulation advantage indices of all voltage regulators within the same frequency unit are normalized. This step ensures that the index values ​​are on a uniform scale, facilitating cross-unit comparisons. After normalization, these results are continuously mapped along the frequency axis to form a frequency action potential function that smoothly varies along the frequency axis. This function is similar to a potential field distribution; a higher value indicates a greater regulation advantage of the voltage regulator at the corresponding frequency, or a more significant difference in response sensitivity.

[0050] Ultimately, the constructed frequency-dependent potential function provides core data support for subsequent evolution rules and responsibility interval allocation. It not only captures static differences but also dynamically reflects changes during system operation, ensuring efficient collaboration among multiple voltage regulators in the frequency domain, avoiding unnecessary regulation conflicts, and improving the overall accuracy and stability of voltage control.

[0051] Specifically, assume that the frequency axis is discretized into multiple consecutive local frequency units (e.g., using...). Divide into steps, Indicates the first (center frequency of the unit), for the first unit Taiwan voltage regulator at frequency Frequency potential function at point This can be expressed as:

[0052] ;

[0053] in: The i-th voltage regulator is in the th... The relative adjustment advantage index within a local frequency unit (the normalized value range is usually in [0,1] or [-1,1], and the higher the value, the greater the advantage).

[0054] It is a Gaussian kernel smoothing function used to achieve continuous mapping on the frequency axis, so that the potential function transitions smoothly on the frequency axis and avoids abrupt changes between discrete units.

[0055] It is a smoothing factor (e.g.) (Adjusted according to the system frequency resolution) to control the degree of "diffusion" of the potential function.

[0056] Relative adjustment advantage index for:

[0057] ;

[0058] in: This represents the normalized ratio of the amplitude response of this voltage regulator in this unit to the average amplitude of all voltage regulators. (This refers to the amplitude of the perturbation response).

[0059] It is the phase consistency factor. Cos is the difference between the phase response and the average phase of this voltage regulator. A value close to 1 indicates good phase matching.

[0060] It is the magnitude factor of the equivalent impedance change direction (e.g., based on the rate of change of the real / imaginary part of the impedance), used to reflect the adaptability of the adjustment direction.

[0061] This indicates that all voltage regulators in this unit... The values ​​are normalized to make or This ensures that the potential functions are comparable.

[0062] The following describes in detail step 103, namely, "based on the frequency potential function, according to the preset frequency attraction and repulsion evolution rules, the effective range on the frequency axis is adaptively evolved so that different voltage regulators form mutually separated stable effective ranges in the frequency domain".

[0063] The evolution process is based on the frequency-dependent potential function. First, movable boundaries are established for the initial operating range of each voltage regulator. These boundaries are distributed along the frequency axis, and their initial setting can be based on experience or uniform division. The application of rules drives boundary movement by analyzing the gradient change trend of the potential function at the boundaries, thereby allowing the range to spontaneously adjust according to the regulator's regulatory advantage.

[0064] The frequency attraction rule primarily targets the increasing potential function trend of a single voltage regulator at its boundaries. When the frequency potential of a voltage regulator shows an increasing trend at the boundary of its operating range, it drives the corresponding boundary of the regulator to move outward, thereby expanding its operating range. This expansion of the regulator's operating range allows it to assume more regulatory responsibility at its dominant frequencies, ensuring efficient utilization of its response sensitivity.

[0065] The frequency repulsion rule handles the interaction conflict between adjacent voltage regulators. When the frequency potential difference between adjacent voltage regulators at the same interval boundary decreases or reverses, it drives the corresponding interval boundary to retreat inward, forming a repulsive separation in the frequency domain. This retreat mechanism forms a separation in the frequency domain, avoiding regulation interference caused by overlapping intervals, similar to the repulsive force between particles to maintain balance.

[0066] Adaptive evolution is achieved through iterative application of these rules, with the system continuously monitoring stability indicators such as boundary movement rate and the degree of overlap between adjacent intervals. When the degree of overlap falls below a preset threshold and the movement tends to converge, the current interval is identified as a stable operating interval. This stable state ensures a clear division of labor among different voltage regulators in the frequency domain; for example, one regulator can dominate low-frequency voltage regulation, while another focuses on suppressing mid-to-high-frequency oscillations.

[0067] As an implementable approach, this application adaptively evolves the operating range on the frequency axis to enable different voltage regulators to form mutually separated stable operating ranges in the frequency domain. This includes: setting dynamically adjustable boundaries for each operating range, and driving the boundaries to advance or retreat according to preset frequency attraction and repulsion evolution rules based on the gradient distribution of the frequency potential function at the boundary and the potential difference between adjacent voltage regulators; continuously monitoring the stability indicators of each operating range, including the boundary movement rate and the degree of overlap between adjacent ranges; when the degree of overlap is lower than a preset threshold and the boundary movement tends to converge, the current operating range is determined as a stable operating range, and a unique frequency domain mutual exclusion identifier is assigned to it. The frequency domain mutual exclusion identifier is used to indicate the uniqueness of the control ownership of the stable operating range and serves as the basis for frequency domain responsibility division in subsequent operation.

[0068] Specifically, the evolution process first establishes dynamically adjustable boundaries for each operating range. These boundaries are not fixed but are driven by the gradient distribution of the frequency-dependent potential function at the boundaries, calculated in real time, and the potential difference between adjacent voltage regulators. The gradient distribution reflects the local trend of the potential function value, while the potential difference quantifies the relative advantages of different voltage regulators near the boundaries. This driving mechanism follows a pre-defined frequency attraction and repulsion evolution rule; for example, when the potential function gradient of the current voltage regulator shows an advantage, it pushes the boundary outward, and conversely, it retreats to make room.

[0069] While driving the boundary forward or backward, the system continuously monitors stability indicators for each operational region. These indicators mainly include the boundary movement rate and the degree of overlap between adjacent regions. The movement rate assesses the dynamic changes in the evolution process, while the degree of overlap measures the level of interference between regions. Through real-time monitoring, the system ensures that the evolution does not fall into an infinite loop or an unstable state.

[0070] When monitoring results show that the overlap between adjacent intervals is below a preset threshold and the boundary movement rate tends to converge, the system confirms the current effective interval as a stable effective interval. This confirmation marks the completion of the evolutionary stage, the interval boundary tends to be fixed, and a clear separation is formed in the frequency domain.

[0071] Finally, a unique frequency domain mutual exclusion identifier is assigned to each stable operating range. This identifier is similar to a unique label, indicating the uniqueness of control ownership within that range, ensuring that only the assigned voltage regulator can dominate the regulation of the corresponding frequency band. In subsequent operation, this identifier serves as the basis for frequency domain responsibility allocation, supporting the activation or suppression of internal loops, further enhancing the orderly coordination of multiple machines.

[0072] The following describes in detail step 104, namely, "determining the stable operating range as the frequency domain responsibility range of each voltage regulator, and activating or suppressing the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range", with reference to the embodiments.

[0073] First, the stable operating range is defined as the frequency domain responsibility range for each voltage regulator. This means that the evolved stable range is no longer a temporary distribution, but is formally assigned as the exclusive responsibility area for each voltage regulator. For example, one voltage regulator may be responsible for voltage stabilization in the low-frequency range, while another focuses on oscillation suppression in the mid-to-high frequency range. This determination process is based on mutual exclusion markers, ensuring that there is no overlap between ranges and forming clear boundaries in the frequency domain.

[0074] Preferably, a frequency domain responsibility confirmation module is built inside the voltage regulator to receive the frequency range description of the stable operating interval and map it to the corresponding internal frequency band index set; based on the frequency band index set, the voltage regulation control loop inside the voltage regulator is labeled with frequency band association, so that each voltage regulation control loop corresponds to at least one controllable frequency band range.

[0075] Specifically, firstly, a frequency domain responsibility confirmation module is built inside the voltage regulator. This module, implemented in software or hardware, is integrated into the voltage regulator's control system. It is responsible for processing the stable operating range information received from the external evolution process, ensuring that frequency domain responsibility is implemented at the device level. The module's main function is to receive frequency range descriptions of the stable operating range. These descriptions typically include the start and end frequency values ​​of the range, for example, a range from 100 Hz to 500 Hz. Upon receiving these descriptions, the module parses and converts them to adapt to the voltage regulator's internal processing format. Subsequently, the module maps the received frequency range descriptions to a corresponding set of internal frequency band indices. This set is an ordered list of indices, each corresponding to a predefined frequency band division within the voltage regulator. Through this mapping, the abstract frequency range is transformed into discrete indices recognizable by the device, facilitating subsequent control allocation. Based on the generated set of frequency band indices, the system performs frequency band association labeling on the voltage regulation control loops within the voltage regulator. These loops include proportional-integral controllers or resonant controllers, etc., used for voltage amplitude and phase adjustment. The labeling process associates each loop with a specific index, ensuring that the loop operates only within its designated frequency band. Ultimately, through frequency band association labeling, each voltage regulation control loop corresponds to at least one controllable frequency band range. This correspondence guarantees that the loop operates effectively within its designated range, while being restricted in non-designated ranges, thereby achieving orderly regulation under multi-machine collaboration, avoiding regulation conflicts, and optimizing resource utilization.

[0076] Next, the voltage regulation loops within the corresponding frequency band of the voltage regulator are activated or suppressed based on the frequency domain responsibility interval. A frequency domain responsibility confirmation module is constructed within the voltage regulator. This module receives a frequency range description of the stable operating interval and maps it to an internal set of frequency band indices. This mapping transforms the abstract frequency domain responsibility into operable control commands.

[0077] For voltage regulation loops within the frequency domain responsibility range, the system introduces regulation gain step by step according to a preset activation sequence. These loops gradually transition from an initial suppressed state to a fully activated state; for example, low gain is first enabled to test stability, and then gradually increased to full load to participate in regulation, thereby ensuring smooth intervention without causing system shock.

[0078] For voltage regulation loops outside their frequency domain responsibility range, the system applies restrictive measures, such as reducing the weight of the regulation output or switching to constrained regulation mode. In this mode, the loop only provides reference voltage maintenance or passive damping support without active intervention to prevent cross-region interference.

[0079] During operation, the system continuously monitors the actual operating frequency band of each voltage regulation loop. If a loop's frequency band deviates from its responsibility range, the activation level or weight is immediately and dynamically adjusted. This real-time correction mechanism maintains consistency between frequency domain responsibility and regulation behavior, ensuring the reliability and adaptability of overall control.

[0080] The following describes in detail step 105, namely, "when the change in the line operating state causes the frequency action potential function to change, the re-evolution of the action range is triggered, and the control parameters of the voltage regulator for the corresponding frequency band voltage regulation loop are updated synchronously," with reference to the embodiments.

[0081] This technical feature describes a dynamic response mechanism to changes in the frequency potential function and its operating range when the operating state of a power line changes. This mechanism ensures that the all-electronic flexible line voltage regulator system can adapt to external disturbances in a timely manner, maintaining the rationality of frequency domain responsibility allocation and the effectiveness of voltage control. It embodies the online adaptive capability of the control strategy, avoiding the failure of static division of labor in dynamic scenarios.

[0082] When the line's operating status changes, such as sudden load changes, fluctuations in distributed power output, or fault clearing, these changes directly affect the voltage and current characteristics at the connection point, thus altering the previously constructed frequency-dependent potential function. This change manifests as an increase or decrease in the relative regulation advantage index within certain frequency units, causing the potential function's distribution curve on the frequency axis to deviate from its original shape. This change is monitored by the system in real time and serves as the core signal triggering re-evolution.

[0083] Once a significant change in the frequency-dependent potential function is detected, the system immediately triggers a re-evolution process for the affected intervals. This evolution is not a global recalculation, but rather a targeted evolution for local intervals where the change has a significant impact. The system first analyzes the distribution of the potential function change, identifies the target frequency sub-intervals that have experienced significant shifts, and then only unfreezes the stability of these affected intervals, allowing their boundaries to be redriven forward or backward based on the new potential function gradient and potential difference. Unaffected intervals retain their original boundaries to reduce computational burden and maintain overall system stability.

[0084] After the re-evolution is complete, the system synchronously updates the control parameters of the voltage regulator's voltage regulation loop for the corresponding frequency band. These parameters include regulation gain, weighting coefficient, enable state, or damping factor. The update process is based on the newly formed stable operating range and frequency domain mutual exclusion identifiers, ensuring that loops within the responsible frequency band receive appropriate activation levels, while loops in non-responsible frequency bands are adjusted to suppression or constraint modes accordingly. This synchronous update mechanism ensures that the control behavior is highly matched with the current line state, avoiding regulation conflicts or oscillation amplification caused by delays.

[0085] Through this closed-loop response that triggers the re-evolution of parameter synchronization, this application achieves rapid adaptation to dynamic changes in the line. In actual operation, it can effectively cope with frequent disturbances caused by the high proportion of inverter power supply access, maintain the long-term stability of voltage qualification rate and system damping performance, and provide key guarantees for the reliable application of flexible line voltage regulators in complex distribution network environments.

[0086] To further illustrate the technical effects achievable by the proposed solution, a specific implementation method and its simulation verification results are provided below.

[0087] In this embodiment, the method of the present invention is applied to a 10kV distribution network feeder scenario. This feeder is connected to three distributed all-electronic flexible line voltage regulators, each with a rated capacity of 500kVA, using a series power electronic converter topology, with an interval of approximately 5km between connection points. The system includes a high proportion of distributed photovoltaic power sources, with the total installed capacity accounting for more than 60% of the feeder load. The control system is implemented based on a DSP+FPGA hardware platform, with a sampling frequency of 10kHz. The implementation steps are as follows: First, a sinusoidal perturbation signal with an amplitude not exceeding 0.5% is introduced in the frequency range of 0.1~2kHz through voltage regulator control commands (segmented scanning, each segment lasting 0.5s), and the voltage and current responses at the connection points are collected; wavelet transform is used for broadband analysis to extract the amplitude response, phase trend, and equivalent impedance change direction of each frequency band; the relative regulation advantage index is calculated.

[0088] .

[0089] After normalization, a Gaussian kernel is used. Perform continuous mapping to construct the frequency action potential function. The initial effective range is uniformly divided, and then the boundary evolution is driven by the potential function boundary gradient and adjacent potential differences: when the gradient increases positively, the boundary is advanced by 5 Hz; when the potential difference is less than 0.15 or reverses, it is retreated. When the boundary movement rate is <1 Hz / s and the adjacent overlap is <5%, a stable range is confirmed and a mutual exclusion identifier is assigned. The internal frequency domain responsibility confirmation module maps the range to an index set, and introduces gain step by step to the responsible frequency band loop (from 0.2 times to full value, step size 0.1, interval 0.2s), and applies a 0.4 weight attenuation or switches the passive damping mode to the non-responsible frequency band. When a sudden change in photovoltaic output causes the potential function to change by more than 20%, local re-evolution is triggered only for the affected sub-range (e.g., 400~600Hz), and the loop gain is updated synchronously.

[0090] To verify the effectiveness of this method, an equivalent model was constructed on the MATLAB platform, and time-domain simulation tests were conducted. The baseline scenario involved a 30% step increase in photovoltaic output (t=2s). Under traditional fixed PI control, the system exhibited subsynchronous oscillations (frequency approximately 45Hz), with an amplitude reaching 15% of the rated voltage, a damping time exceeding 8s, and a voltage qualification rate (deviation <±7%) of only 82%. After adopting this method, the three voltage regulators adaptively divided their functions: one primarily controlled low-frequency voltage regulation (0~200Hz), another handled mid-frequency harmonic suppression (200~800Hz), and the third focused on damping high-frequency oscillations above 800Hz. The oscillations were effectively suppressed within 1.8s after t=2s, with the amplitude decreasing to <2%, and the damping time shortened to approximately 2.2s (a reduction of approximately 72.5%). The peak voltage fluctuation was controlled within ±4.5% of the rated value, and the voltage qualification rate increased to 99.2%. Furthermore, in a communication interruption scenario (simulated packet loss at t=5s), this method relies on local broadband response characteristics to maintain local control, with voltage deviation <±6% and the system remaining stable. Statistical analysis of multiple Monte Carlo simulations (100 random photovoltaic fluctuations) shows that the average oscillation suppression time is 2.1~2.4s, and the voltage qualification rate remains stable above 98.8%, verifying the robustness and superiority of the method.

[0091] The method provided in this application embodiment can be applied to various application scenarios, including but not limited to: for situations involving dynamic load changes and frequent fluctuations in line impedance, it can respond quickly through a local re-evolution mechanism, requiring only a few seconds to tens of seconds to redistribute the frequency domain responsibility interval, avoiding the delay and computational burden caused by global recalculation; in addition, under conditions of non-ideal communication or islanded operation, this method relies on the self-organizing characteristics of the local broadband dynamic response features to still ensure basic voltage stability and oscillation suppression capabilities, exhibiting strong robustness and engineering applicability, and providing an efficient, intelligent, and low-cost control solution for voltage management in future smart distribution networks.

[0092] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0093] According to another embodiment, a fully electronic flexible line voltage regulator voltage control system is provided. Figure 2 A schematic block diagram of the voltage control system for this all-electronic flexible line voltage regulator according to one embodiment is shown. Figure 2 As shown, the system 200 includes:

[0094] The dynamic response feature acquisition unit 201 is configured to acquire the voltage and current signals at the access point of the all-electronic flexible line voltage regulator, and perform broadband analysis on the signals to obtain the dynamic response features of the line at different frequencies.

[0095] The frequency action potential function construction unit 202 is configured to construct a frequency action potential function on the frequency axis for each voltage regulator based on the dynamic response characteristics. The frequency action potential function characterizes the adjustment advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency.

[0096] The stable operating range construction unit 203 is configured to adaptively evolve the operating range on the frequency axis according to the frequency potential function and the preset frequency attraction and repulsion evolution rules, so that different voltage regulators form mutually separated stable operating ranges in the frequency domain.

[0097] The voltage regulation loop control unit 204 is configured to determine the stable operating range as the frequency domain responsibility range of each voltage regulator, and to activate or suppress the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range.

[0098] The operating status change monitoring unit 205 is configured to trigger the re-evolution of the operating range and synchronously update the control parameters of the voltage regulator for the corresponding frequency band voltage regulation loop when the line operating status change causes the frequency action potential function to change.

[0099] As an implementable approach, the dynamic response feature acquisition unit 201, when performing broadband analysis on the signal to obtain the dynamic response features of the line at different frequencies, can be configured as follows: without changing the normal operating state of the line, a voltage regulator control command is used to introduce amplitude-limited perturbation adjustment actions at different time scales, so that distinguishable frequency excitation components are superimposed on the line response; the voltage and current response signals caused by the perturbation adjustment actions are collected, and the response signals are segmented and projected on the frequency axis to extract the mapping relationship between the voltage regulator output change and the line voltage response in each frequency band; based on the mapping relationship, a dynamic response feature is constructed to characterize the consistency of the line's response to the voltage regulator adjustment actions in each frequency band, and the dynamic response feature is used to reflect the controllability and coupling characteristics of the line at different frequencies.

[0100] As an implementable approach, the frequency potential function construction unit 202, when constructing a frequency potential function for each voltage regulator on the frequency axis based on the dynamic response characteristics, can be configured as follows: within a preset frequency range, the frequency axis is divided into multiple continuous local frequency units, and the amplitude response, phase change trend, and equivalent impedance change direction of the voltage regulator are extracted within each local frequency unit; based on the dynamic response characteristics within the local frequency unit, the relative adjustment advantage index of the voltage regulator within that frequency unit is calculated, and the relative adjustment advantage index is used to characterize the degree of adjustment adaptation of the voltage regulator to that frequency unit relative to other voltage regulators; the relative adjustment advantage index of each voltage regulator within the same frequency unit is normalized, and the normalization result is continuously mapped along the frequency axis to form a frequency potential function that continuously varies on the frequency axis.

[0101] As an implementable approach, the preset frequency attraction and repulsion evolution rules include: when the frequency potential of a voltage regulator at the interval boundary shows an increasing trend, driving the interval boundary corresponding to the voltage regulator to move outward to expand its effective range; when the frequency potential difference between adjacent voltage regulators at the same interval boundary decreases or reverses, driving the corresponding interval boundary to move inward to form repulsion separation in the frequency domain.

[0102] As an implementable approach, the stable operating range construction unit 203 can be configured to: adaptively evolve the operating range on the frequency axis to form mutually separated stable operating ranges for different voltage regulators in the frequency domain; set dynamically adjustable boundaries for each operating range; and drive the boundaries to advance or retreat according to preset frequency attraction and repulsion evolution rules based on the gradient distribution of the frequency action potential function at the boundary and the potential difference between adjacent voltage regulators; continuously monitor the stability indicators of each operating range, including the boundary movement rate and the degree of overlap between adjacent ranges; when the degree of overlap is lower than a preset threshold and the boundary movement tends to converge, the current operating range is determined as a stable operating range, and a unique frequency domain mutual exclusion identifier is assigned to it. The frequency domain mutual exclusion identifier is used to indicate the uniqueness of the control ownership of the stable operating range and serves as the basis for frequency domain responsibility division in subsequent operation.

[0103] As an implementable approach, the voltage regulation loop control unit 204, when determining the stable operating range as the frequency domain responsibility range of each voltage regulator and activating or suppressing the voltage regulation loops within the corresponding frequency band of the voltage regulator according to the frequency domain responsibility range, can be configured as follows: A frequency domain responsibility confirmation module is constructed within the voltage regulator to receive the frequency range description of the stable operating range and map it to a corresponding internal frequency band index set; based on the frequency band index set, frequency band association labels are applied to the voltage regulation control loops within the voltage regulator, so that each voltage regulation control loop corresponds to at least one controllable frequency band range; for voltage regulation control loops belonging to the frequency domain responsibility range, regulation gain is introduced step-by-step according to a preset activation order, transitioning them from a suppressed state to a fully participating activation state; for voltage regulation control loops not belonging to the frequency domain responsibility range, the weight of their regulation output on the target frequency band is limited, or they are switched to a constrained regulation state that only maintains the stability of the reference voltage; during operation, the actual operating frequency band of each voltage regulation control loop is continuously monitored, and when its operating frequency band deviates from the corresponding frequency domain responsibility range, its activation level is dynamically adjusted.

[0104] As an implementable approach, when the change in line operating status causes a change in the frequency potential function, triggering the re-evolution of the operating range, the operating status change monitoring unit can be configured to: analyze the distribution of the frequency potential function on the frequency axis to identify the target frequency sub-range that has changed significantly; based on the target frequency sub-range, determine whether the corresponding operating range is directly affected by the change in line operating status, and only unfreeze the stable state of the affected operating range; initiate a local re-evolution process for the unfrozen operating range, keeping the boundary of the unaffected operating range unchanged.

[0105] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments. The system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. Components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without creative effort.

[0106] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use and processing of the relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0107] In addition, embodiments of this application also provide a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described in any of the foregoing method embodiments.

[0108] And an electronic device comprising: one or more processors; and a memory associated with the one or more processors, the memory being used to store program instructions that, when read and executed by the one or more processors, perform the steps of the method described in any of the foregoing method embodiments.

[0109] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in any of the foregoing method embodiments.

[0110] in, Figure 3 The architecture of an electronic device is illustrated, which may include a processor 310, a video display adapter 311, a disk drive 312, an input / output interface 313, a network interface 314, and a memory 320. The processor 310, video display adapter 311, disk drive 312, input / output interface 313, network interface 314, and memory 320 can communicate with each other via a communication bus 330.

[0111] The processor 310 can be implemented using a general-purpose CPU, microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits to execute relevant programs in order to implement the technical solution provided in this application.

[0112] The memory 320 can be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 320 can store the operating system 321 for controlling the operation of the electronic device 300, and the basic input / output system (BIOS) 322 for controlling the low-level operations of the electronic device 300. Additionally, it can store a web browser 323, a data storage management system 324, and a fully electronic flexible circuit voltage regulator voltage control system 325, etc. The aforementioned fully electronic flexible circuit voltage regulator voltage control system 325 can be the application program that specifically implements the aforementioned steps in this embodiment. In summary, when implementing the technical solution provided in this application through software or firmware, the relevant program code is stored in the memory 320 and is called and executed by the processor 310.

[0113] Input / output interface 313 is used to connect input / output modules to realize information input and output. Input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. Input devices may include keyboards, mice, touch screens, microphones, various sensors, etc., and output devices may include displays, speakers, vibrators, indicator lights, etc.

[0114] Network interface 314 is used to connect a communication module (not shown in the figure) to enable communication between this device and other devices. The communication module can communicate via wired means (such as USB, Ethernet cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.).

[0115] Bus 330 includes a pathway for transmitting information between various components of the device, such as processor 310, video display adapter 311, disk drive 312, input / output interface 313, network interface 314, and memory 320.

[0116] It should be noted that although the above-described device only shows the processor 310, video display adapter 311, disk drive 312, input / output interface 313, network interface 314, memory 320, bus 330, etc., in specific implementations, the device may also include other components necessary for normal operation. Furthermore, those skilled in the art will understand that the above-described device may only include the components necessary for implementing the solution of this application, and does not necessarily include all the components shown in the figures.

[0117] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer program product. This computer program product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0118] The technical solutions provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A voltage control method for a fully electronic flexible circuit voltage regulator, characterized in that, The method includes: The voltage and current signals at the access point of the all-electronic flexible line voltage regulator are collected, and the signals are analyzed in a wideband manner to obtain the dynamic response characteristics of the line at different frequencies. Within a preset frequency range, the frequency axis is divided into multiple continuous local frequency units, and the amplitude response, phase change trend, and equivalent impedance change direction of the voltage regulator are extracted within each local frequency unit. Based on the dynamic response characteristics within the local frequency unit, the relative adjustment advantage index of the voltage regulator within the frequency unit is calculated. The relative adjustment advantage index is used to characterize the degree of adjustment adaptation of the voltage regulator to the frequency unit relative to other voltage regulators. The relative regulation advantage index of each voltage regulator within the same frequency unit is normalized, and the normalization result is continuously mapped along the frequency axis to form a frequency action potential function that changes continuously on the frequency axis. The frequency action potential function characterizes the regulation advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency. Based on the frequency action potential function, and in accordance with the preset frequency attraction and frequency repulsion evolution rules, the action range on the frequency axis is adaptively evolved so that different voltage regulators form mutually separated stable action ranges in the frequency domain. The stable operating range is determined as the frequency domain responsibility range of each voltage regulator, and the voltage regulation loop of the corresponding frequency band inside the voltage regulator is activated or suppressed according to the frequency domain responsibility range. When the change in the line operating state causes the frequency action potential function to change, the re-evolution of the action range is triggered, and the control parameters of the voltage regulator for the corresponding frequency band voltage regulation loop are updated synchronously.

2. The method of claim 1, wherein, Performing wideband analysis on the signal to obtain the dynamic response characteristics of the line at different frequencies includes: Without changing the normal operating state of the line, amplitude-limited perturbation adjustment actions are introduced at different time scales through voltage regulator control commands, so that distinguishable frequency excitation components are superimposed in the line response. The voltage and current response signals caused by the perturbation adjustment action are collected, and the response signals are segmented and projected on the frequency axis to extract the mapping relationship between the voltage regulator output change and the line voltage response in each frequency band. Based on the mapping relationship, a dynamic response feature is constructed to characterize the consistency of the line's response to the voltage regulator's adjustment action in each frequency band. The dynamic response feature is used to reflect the line's controllability and coupling characteristics at different frequencies.

3. The method of claim 1, wherein, The preset frequency attraction and frequency repulsion evolution rules include: When the frequency potential of a voltage regulator at the boundary of an interval shows an increasing trend, it drives the boundary of the interval corresponding to the voltage regulator to move outward, so as to expand its range of action. When the frequency difference of adjacent voltage regulators at the same interval boundary decreases or reverses, it drives the corresponding interval boundary to retreat inward, thereby forming a repulsive separation in the frequency domain.

4. The method of claim 1, wherein, Adaptive evolution of the operating range on the frequency axis allows different voltage regulators to form stable operating ranges that are mutually separated in the frequency domain, including: A dynamically adjustable boundary is set for each action range, and the boundary is driven to advance or retreat according to the gradient distribution of the frequency action potential function at the boundary and the potential difference between adjacent voltage regulators, based on the preset frequency attraction and frequency repulsion evolution rules. The stability indicators of each action interval are continuously monitored. The stability indicators include the boundary movement rate and the degree of overlap between adjacent intervals. When the degree of overlap is lower than a preset threshold and the boundary movement tends to converge, the current action interval is determined as a stable action interval and a unique frequency domain mutual exclusion identifier is assigned to it. The frequency domain mutual exclusion identifier is used to indicate the uniqueness of the control ownership of the stable action interval and serves as the basis for the division of frequency domain responsibilities in subsequent operation.

5. The method of claim 1, wherein, The stable operating range is defined as the frequency domain responsibility range of each voltage regulator, and the voltage regulation loops of the corresponding frequency bands within the voltage regulator are activated or suppressed according to the frequency domain responsibility range, including: A frequency domain responsibility confirmation module is built inside the voltage regulator to receive the frequency range description of the stable operating interval and map it to the corresponding internal frequency band index set. Based on the frequency band index set, frequency band association labels are applied to the voltage regulation control loop inside the voltage regulator, so that each voltage regulation control loop corresponds to at least one controllable frequency band range. For voltage regulation control loops belonging to the frequency domain responsibility interval, regulation gain is introduced step by step according to a preset activation sequence, so that it transitions from a suppressed state to an activated state that fully participates in regulation. For voltage regulation control loops that do not belong to the frequency domain responsibility range, limit the weight of their regulation output on the target frequency band, or switch them to a constrained regulation state that only maintains the stability of the reference voltage. During operation, the actual operating frequency band of each voltage regulation control loop is continuously monitored. When it is detected that the operating frequency band deviates from the corresponding frequency domain responsibility range, its activation level is dynamically adjusted.

6. The method of claim 1, wherein, When a change in the line operating state causes a change in the frequency potential function, a re-evolution of the effective range is triggered, including: Analyze the distribution of the frequency potential function along the frequency axis to identify the target frequency sub-intervals that have undergone significant changes; Based on the target frequency sub-interval, determine whether the corresponding effective interval is directly affected by changes in the line operating status, and only unfreeze the stable state of the affected effective interval. A local re-evolution process is initiated for the affected regions that have been unfrozen, while keeping the boundaries of the unaffected affected regions unchanged.

7. An all-electronic flexible line regulator voltage control system, characterized by, The system includes: The dynamic response feature acquisition unit is configured to acquire voltage and current signals at the access point of the all-electronic flexible line voltage regulator, and perform wideband analysis on the signals to obtain the dynamic response features of the line at different frequencies. The frequency potential function construction unit is configured to divide the frequency axis into multiple continuous local frequency units within a preset frequency range, and extract the amplitude response, phase change trend, and equivalent impedance change direction of the voltage regulator within each local frequency unit. Based on the dynamic response characteristics within the local frequency unit, the relative adjustment advantage index of the voltage regulator within that frequency unit is calculated. The relative adjustment advantage index is used to characterize the degree of adjustment adaptation of the voltage regulator to the frequency unit relative to other voltage regulators. The relative adjustment advantage index of each voltage regulator within the same frequency unit is normalized, and the normalization result is continuously mapped along the frequency axis to form a frequency potential function that continuously varies on the frequency axis. The frequency potential function characterizes the adjustment advantage of each voltage regulator relative to other voltage regulators at the corresponding frequency. The stable operating range construction unit is configured to adaptively evolve the operating range on the frequency axis according to the frequency potential function and the preset frequency attraction and repulsion evolution rules, so that different voltage regulators form mutually separated stable operating ranges in the frequency domain. The voltage regulation loop control unit is configured to determine the stable operating range as the frequency domain responsibility range of each voltage regulator, and to activate or suppress the voltage regulation loop of the corresponding frequency band inside the voltage regulator according to the frequency domain responsibility range; The operating status change monitoring unit is configured to trigger the re-evolution of the operating range and synchronously update the control parameters of the voltage regulator for the corresponding frequency band voltage regulation loop when the change in the line operating status causes a change in the frequency action potential function.

8. An electronic device, comprising: include: One or more processors; And a memory associated with the one or more processors, the memory being used to store program instructions that, when read and executed by the one or more processors, perform the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, When the program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 6.

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