Energy-saving optimization control method, system and equipment of JP cabinet and medium

Abstract

The invention relates to the technical field of power equipment control, and provides an energy-saving optimization control method, system and device of a JP cabinet and a medium. The method comprises the following steps: acquiring a voltage phase at a main incoming line and a current phase of each power distribution branch in real time, and generating a phase synchronization margin between the JP cabinet and each branch based on the voltage phase and each current phase; determining a current active power threshold value based on the phase synchronization margin and a preset active power threshold value, and judging whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet in a preset time period and the current active power threshold value; and if yes, performing phase compensation on each branch. According to the method, the power factor of the JP cabinet is improved, the line loss is reduced, and stable, reliable and self-adaptive energy-saving optimization control is realized on the premise of ensuring the safety of optimization operation.

Description

Technical Field

[0001] This invention relates to the field of power equipment control technology, and in particular to an energy-saving optimization control method, system, equipment and medium for a JP cabinet. Background Technology

[0002] Low-voltage integrated distribution boxes (commonly known as JP cabinets) are key terminal equipment in power distribution networks. Their operational energy efficiency affects the line loss rate of the regional power grid and the electricity economy of users. Optimizing the energy efficiency of JP cabinets is an important means to improve the overall efficiency of the power distribution system.

[0003] Existing JP cabinet energy-saving optimization control methods typically trigger optimization operations when the power factor is detected to be below a fixed threshold or when a preset time point is reached. This fails to effectively identify whether the system is in a stable electrical condition suitable for performing optimization operations. When performing optimization operations during periods of severe load fluctuation or system transients, this method may not only fail to achieve the expected energy-saving effect, but may also introduce additional electrical disturbances due to improper operation, thereby restricting the reliability and safety of energy-saving optimization. Summary of the Invention

[0004] The main objective of this invention is to provide an energy-saving optimization control method, system, device, and medium for JP cabinets, aiming to solve the problem that the motion control system in the prior art has a hysteresis effect that causes inconsistency between forward and reverse triggering, resulting in poor performance of the motion control system in scenarios with high precision, high repeatability, and high dynamic performance.

[0005] In a first aspect, embodiments of the present invention provide an energy-saving optimization control method for a JP cabinet, comprising: The voltage phase at the main incoming line and the current phase of each distribution branch are acquired in real time, and the phase synchronization margin between the JP cabinet and each branch is generated based on the voltage phase and each current phase. The current active power threshold is determined based on the phase synchronization margin and the preset active power threshold, and it is determined whether to optimize the JP cabinet for energy saving based on the active power of the JP cabinet within a preset time period and the current active power threshold. If so, perform phase compensation on each of the aforementioned branches; If not, maintain the current operating status of the JP cabinet and return to the step of obtaining the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch in real time, so as to determine whether to enter the optimization window period in the next round.

[0006] Secondly, embodiments of the present invention provide an energy-saving optimization control system for a JP cabinet, comprising: The generation module is used to acquire the voltage phase at the main incoming line and the current phase of each distribution branch in real time, and generate the phase synchronization margin between the JP cabinet and each branch based on the voltage phase and each current phase. The judgment module is used to determine the current active power threshold based on the phase synchronization margin and the preset active power threshold, and to determine whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet in the preset time period and the current active power threshold. The first execution module is used to determine the phase compensation of each branch when performing energy-saving optimization on the JP cabinet; The second execution module is used to determine whether to maintain the current operating state of the JP cabinet when energy-saving optimization is not performed, and to return to the step of real-time acquisition of the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch, so as to determine whether to enter the optimization window period in the next round.

[0007] Thirdly, embodiments of the present invention also provide a terminal device, the terminal device including a processor, a memory, a computer program stored in the memory and executable by the processor, and a data bus for realizing communication between the processor and the memory, wherein when the computer program is executed by the processor, it implements the steps of any of the energy-saving optimization control methods for JP cabinets provided in this specification.

[0008] Fourthly, embodiments of the present invention also provide a computer storage medium for computer-readable storage, wherein the storage medium stores one or more programs, which can be executed by one or more processors to implement the steps of any of the energy-saving optimization control methods for JP cabinets provided in this specification.

[0009] This invention provides an energy-saving optimization control method, system, device, and medium for a power distribution switchgear (JP) cabinet. The method first acquires the voltage phase at the main incoming line and the current phase of each distribution branch in real time. Based on the voltage and current phases, a phase synchronization margin is generated between the JP cabinet and each branch, dynamically evaluating the phase coordination health status of the loads in each branch within the JP cabinet. This provides a basis for energy-saving decisions that goes beyond traditional fixed thresholds and is deeply correlated with the real-time operating conditions of the system. Then, based on the phase synchronization margin and a preset active power threshold, a current active power threshold is determined. Based on the active power of the JP cabinet within a preset time period and the current active power threshold, it is determined whether to perform energy-saving optimization on the JP cabinet. This accurately identifies the energy-saving optimization opportunity when the system load is stable and suitable for adjusting electrical parameters, solving the safety and reliability issues that may arise from reckless operation during load fluctuations in existing technologies. Finally, by performing phase compensation on each branch at the corresponding energy-saving optimization opportunity, the power factor of the JP cabinet is improved and line losses are reduced while ensuring the safety of the optimization operation, achieving stable, reliable, and adaptive energy-saving optimization control. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 A flowchart illustrating an energy-saving optimization control method for a JP cabinet provided in one embodiment of this application; Figure 2 A schematic block diagram of the structure of an energy-saving optimization control system for a JP cabinet provided in an embodiment of this application; Figure 3 This is a schematic block diagram of the structure of a terminal device provided in an embodiment of this application. Detailed Implementation

[0012] 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, not all, of the embodiments of the present invention. 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.

[0013] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0014] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0015] This invention provides an energy-saving optimization control method, system, device, and medium for a JP cabinet. The energy-saving optimization control method for the JP cabinet can be applied to terminal devices, such as tablets, laptops, desktop computers, personal digital assistants, and wearable devices. The terminal device can be a server or a server cluster.

[0016] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0017] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating an energy-saving optimization control method for a JP cabinet provided in an embodiment of the present invention.

[0018] like Figure 1 As shown, the energy-saving optimization control method for the JP cabinet provided in this embodiment includes steps S1 to S4.

[0019] Step S1: Obtain the voltage phase at the main incoming line and the current phase of each distribution branch in real time, and generate the phase synchronization margin between the JP cabinet and each branch based on the voltage phase and the current phase.

[0020] The phase synchronization margin refers to a quantitative index that comprehensively reflects the degree of coordination between the load current phase of each distribution branch and the phase of the total incoming voltage within the JP cabinet. The higher the value, the more concentrated the current phase distribution within the system and the less lagging it is, and the smaller the potential optimization space for overall power conversion and transmission efficiency. Conversely, the lower the value, the more it indicates that there are branches with serious phase lag or chaotic distribution in the system, and the greater the necessity for energy-saving optimization.

[0021] Specifically, the voltage phase is obtained by using a voltage transformer or voltage sensor installed downstream of the main incoming circuit breaker of the JP cabinet, with a synchronous sampling clock as the reference, to collect voltage waveform signals, and then analyzing the instantaneous phase angle of the fundamental voltage through a phase-locked loop circuit or a discrete Fourier transform algorithm. The current phase is obtained by using a current transformer or current sensor installed upstream of the distribution branch circuit breaker, with the same synchronous sampling clock as the reference, to collect current waveform signals of each branch, and then using the same phase analysis method as the voltage phase to obtain the instantaneous phase angle of the fundamental current of the distribution branch. After obtaining the voltage phase and the current phase of each distribution branch, the phase synchronization margin is generated based on a preset phase synchronization margin generation method.

[0022] In some embodiments, generating the phase synchronization margin between the JP cabinet and each of the branches based on the voltage phase and each of the current phases includes: Step S121: Calculate the phase difference between the voltage phase and each of the current phases respectively.

[0023] Specifically, for each current phase, the phase difference corresponding to the current phase is obtained by subtracting the current phase from the voltage phase.

[0024] Step S122: Determine the maximum phase difference among the phase differences and calculate the dispersion among the phase differences.

[0025] Specifically, the dispersion is the standard deviation between each of the phase differences.

[0026] Step S123: Calculate the weighted average between the maximum phase difference and the dispersion; wherein the weighting coefficient of the maximum phase difference is greater than the weighting coefficient of the dispersion.

[0027] Understandably, by assigning a greater weight to the maximum phase difference, the phase synchronization margin becomes more sensitive to the branch with the most severe current phase lag in the system, thereby ensuring that optimization decisions can prioritize key issues that have the greatest impact on the overall power factor of the system, and improving the accuracy and effectiveness of optimization measures.

[0028] Step S124: Generate the phase synchronization margin based on the weighted average value.

[0029] Specifically, adopt Calculate the phase synchronization margin, where, The phase synchronization margin, For any non-zero positive number, This is the weighted average value.

[0030] Understandably, steps S121 to S124 firstly involve calculating the phase difference of each branch to obtain basic data for evaluating the internal phase status of the system, providing effective basic data for subsequent comprehensive evaluation; then, by extracting the maximum phase difference and calculating the dispersion of the phase difference, the degree of phase incoordination of the system is quantified from the two dimensions of the worst individual and the overall distribution, respectively, thus constructing the basis for comprehensive evaluation; finally, by calculating the weighted average and generating the phase synchronization margin, the evaluation information from the two dimensions is integrated into an intuitive single indicator, providing a clear and reliable basis for subsequent adaptive control decisions.

[0031] Step S2: Determine the current active power threshold based on the phase synchronization margin and the preset active power threshold, and determine whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet within a preset time period and the current active power threshold.

[0032] The preset time period is a time period that is connected to the current time and precedes the current time.

[0033] Understandably, determining the current active power threshold based on the phase synchronization margin and the preset active power threshold means that the active power threshold used to determine whether the system is stable is no longer fixed, but can be adjusted according to the current phase synchronization margin of the system, providing a more flexible and safer triggering condition for optimized operation.

[0034] In some embodiments, determining the current active power threshold based on the phase synchronization margin and a preset active power threshold includes: Step S211: Calculate the target synchronization margin influence coefficient based on the preset maximum synchronization margin influence coefficient, minimum synchronization margin influence coefficient, and the phase synchronization margin; wherein the phase synchronization margin is negatively correlated with the target synchronization margin influence coefficient.

[0035] Understandably, when the system phase synchronization margin is low, meaning the phase coordination is poor and optimization is urgently needed, the requirements for the stability of the system's active power should be appropriately relaxed. That is, the target synchronization margin influence coefficient should be increased to relax the active power threshold, so as to provide more opportunities for necessary optimization operations. Conversely, when the system phase synchronization margin is high, it indicates that the system is operating in a better state. At this time, the entry threshold for optimization operations should be increased, that is, the target synchronization margin influence coefficient should be decreased to tighten the active power threshold. Fine-tuning should only be carried out when the system is extremely stable to avoid unnecessary disturbances.

[0036] Specifically, through Calculate the target synchronization margin influence coefficient, where, The target synchronization margin influence coefficient is... The maximum synchronization margin influence coefficient is... The minimum synchronization margin influence coefficient is given.

[0037] Step S212: Determine the product between the target synchronization margin influence coefficient and the active power threshold as the current active power threshold.

[0038] Understandably, in steps S211 to S212, firstly, by establishing a negative correlation mapping relationship between the phase synchronization margin and the target synchronization margin influence coefficient, the urgency of the system optimization needs to be quantified into an adjustment factor, thus realizing the adaptive control logic; then, by multiplying the adjustment factor by the basic threshold to obtain the current threshold, the specific criteria for judging whether the electrical state of the system is stable enough to perform optimization are dynamically set, ensuring that the energy-saving optimization action is always triggered at the safest and most appropriate time.

[0039] In other embodiments, the step of determining whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet within a preset time period and the current active power threshold includes: Step S221: Extract the active power sequence of the JP cabinet within a preset time period from the preset database.

[0040] The active power refers to the power absorbed by the JP cabinet from the power grid and actually converted into other forms of energy (such as mechanical energy and thermal energy). The active power is obtained by periodic sampling by the power measurement device on the main incoming line side and stored in the preset database in chronological order.

[0041] Step S222: Calculate the first-order absolute difference between two adjacent active power in the active power sequence in sequence to obtain the first-order absolute difference sequence corresponding to the active power sequence.

[0042] Specifically, for two adjacent active power in the active power sequence, the absolute value of the difference between the two adjacent active power is determined to be the absolute value of the first-order difference between the two adjacent active power.

[0043] Step S223: Determine whether each first-order difference absolute value in the first-order difference absolute value sequence is less than a preset first-order difference absolute value, and determine whether the current active power of the JP cabinet is less than the current active power threshold.

[0044] Understandably, the current active power is the last active power in the active power sequence.

[0045] Step S224: When all first-order absolute values ​​in the first-order difference absolute value sequence are less than a preset first-order absolute value, and the current active power of the JP cabinet is less than the current active power threshold, it is determined that the energy-saving optimization window period has been entered; when any first-order absolute value in the first-order difference absolute value sequence is not less than a preset first-order absolute value, and / or the current active power of the JP cabinet is not less than the current active power threshold, it is determined that the energy-saving optimization window period has not been entered.

[0046] Understandably, steps S221 to S224 firstly, by extracting historical active power sequences, raw data reflecting the recent load change trend of the system is obtained, providing a basis for stability analysis; then, by calculating the first-order difference absolute value sequence, the macroscopic changes in the load are transformed into a microscopic quantitative description of the degree of power change between adjacent moments, which can accurately capture the instantaneous fluctuation characteristics of the load; finally, by simultaneously requiring the power change trend to be stable and the current active power to be less than the current active power threshold, it helps to avoid performing optimization operations under unstable conditions of sudden load changes or high power, thus ensuring the safety and reliability of the control process.

[0047] Step S3: If so, perform phase compensation on each of the branches.

[0048] Specifically, after determining in step S2 that energy-saving optimization of the JP cabinet has been performed, the process of phase compensation for each of the branches is initiated.

[0049] In some embodiments, the phase compensation for each of the branches includes: Among the branches, the branch to be compensated is determined; wherein the current phase of the branch to be compensated lags behind the voltage phase; Phase compensation is performed on each of the branches to be compensated.

[0050] Specifically, for each of the branches, if the current phase corresponding to the branch is after the voltage phase, the branch is determined to be a branch to be compensated, and phase compensation is performed on the branch.

[0051] Understandably, this embodiment performs phase compensation for each branch with current phase lag, ensuring the comprehensiveness of the compensation. It can systematically eliminate all lagging current components that cause reactive power loss, maximize the overall power factor of the JP cabinet, and achieve universal energy-saving effect.

[0052] In other embodiments, the phase compensation for each of the branches includes: Among the branches, the branch to be compensated is determined; wherein the phase difference between the current phase and the voltage phase corresponding to the branch to be compensated is greater than a preset phase difference; Phase compensation is performed on each of the branches to be compensated.

[0053] Specifically, for each of the branches, if the phase difference between the current phase and the voltage phase corresponding to the branch is greater than a preset phase difference, the branch is determined to be a branch to be compensated, and phase compensation is performed on the branch.

[0054] Understandably, this embodiment's selective compensation strategy, which only compensates for branches where the current phase lags behind the voltage phase by a phase difference greater than a preset phase difference, focuses on the branches that most severely drag down the system's power factor. This avoids excessive intervention in branches with slight lag, enabling the resolution of core contradictions with more economical and efficient compensation resource investment, and improving the input-output ratio of the optimization process.

[0055] In some other embodiments, the phase compensation for each of the branches to be compensated includes: For each of the branches to be compensated, the capacitive reactive power corresponding to the branch to be compensated is calculated based on the current apparent power of the branch to be compensated and the phase difference corresponding to the branch to be compensated, and the reactive power compensation device in the JP cabinet is controlled to switch the capacitive reactive power to the distribution bus where the branch to be compensated is located.

[0056] The reactive power compensation device refers to an electrical device installed inside the JP cabinet to generate or absorb reactive power to adjust the system power factor, such as a grouped switching capacitor bank or a static var generator; the distribution bus refers to the conductive copper bus inside the JP cabinet used to collect and distribute electrical energy and connect each distribution branch to the main incoming line. Depending on the electrical connection relationship, there may be a multi-level structure such as the main bus and branch bus. Here, it specifically refers to the bus that is directly electrically connected to the branch to be compensated and is the closest to it.

[0057] Specifically, for each of the aforementioned branches to be compensated, the real-time apparent power of that branch is read. The phase difference calculated in step S121 ,according to The theoretically required capacitive reactive power to compensate the branch to a purely resistive state (target phase difference of 0) is calculated. After the calculation is completed, a switching command is generated to drive the corresponding capacity capacitor bank switch in the reactive power compensation device to close. The control command specifies that this portion of capacitive reactive power is injected into the specific distribution bus where the branch to be compensated is located, rather than the main incoming bus of the JP cabinet. For example, if the branch to be compensated is connected to a branch bus, the control command is switched on the capacitor bank connected to that branch bus. This targeted injection method minimizes the flow path of the compensation current, enabling the most direct and effective cancellation of the lagging reactive current generated by the branch, while minimizing electrical interference to other non-target branches within the same JP cabinet, achieving refined local phase synchronization and global energy efficiency improvement.

[0058] Step S4: If not, maintain the current operating state of the JP cabinet and return to the step of obtaining the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch in real time, so as to determine whether to enter the optimization window period in the next round.

[0059] Specifically, when step S2 determines that energy-saving optimization is not required, no switching or adjustment commands will be issued to the reactive power compensation device. All switching equipment in the JP cabinet will remain in its original state, and the loads of each branch will continue to operate according to their inherent characteristics. Simultaneously, the judgment logic will be immediately reset, and step S1 will be executed again, initiating a new round of voltage and current phase synchronization acquisition, phase synchronization margin calculation, dynamic determination of the current active power threshold, and a dual judgment process for system stability. This design enables the entire control method to form a continuously operating, adaptive closed-loop monitoring and decision-making cycle, ensuring that the system can continuously evaluate its own state and is ready to quickly and accurately execute optimization actions when the next energy-saving optimization opportunity arrives.

[0060] The method provided in this embodiment firstly acquires the voltage phase at the main incoming line and the current phase of each distribution branch in real time, and generates a phase synchronization margin between the JP cabinet and each branch based on the voltage phase and the current phase. This dynamically evaluates the phase coordination health status of the loads of each branch within the JP cabinet, providing a basis for energy-saving decisions that goes beyond traditional fixed thresholds and is deeply correlated with the real-time operating conditions of the system. Secondly, it determines the current active power threshold based on the phase synchronization margin and a preset active power threshold, and judges whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet within a preset time period and the current active power threshold. This accurately identifies the time when the system load is stable and suitable for adjusting electrical parameters, solving the problem of insufficient safety and reliability caused by reckless operation during load fluctuations in existing technologies. Finally, by performing phase compensation on each branch at the corresponding energy-saving optimization time, the power factor of the JP cabinet is improved and line losses are reduced while ensuring the safety of the optimization operation, achieving stable, reliable and adaptive energy-saving optimization control.

[0061] Please see Figure 2 , Figure 2 An energy-saving optimization control system 100 for a JP cabinet is provided in this application embodiment. The energy-saving optimization control system 100 for the JP cabinet includes a generation module 110, a judgment module 120, a first execution module 130, and a second execution module 140. The generation module 110 is used to acquire the voltage phase at the main incoming line and the current phase of each distribution branch in real time, and generate a phase synchronization margin between the JP cabinet and each branch based on the voltage phase and the current phase. The judgment module 120 is used to determine the current active power threshold based on the phase synchronization margin and a preset active power threshold, and determine whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet in a preset time period and the current active power threshold. The first execution module 130 is used to perform phase compensation on each branch when energy-saving optimization is performed on the JP cabinet; the second execution module 140 is used to maintain the current operating state of the JP cabinet when energy-saving optimization is not performed on the JP cabinet, and return to the step of real-time acquisition of the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch, so as to determine whether to enter the optimization window period in the next round.

[0062] In some implementations, the energy-saving optimization control system 200 of the JP cabinet can be applied to terminal equipment.

[0063] It should be noted that those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the JP cabinet energy-saving optimization control system 200 described above can be referred to the corresponding process in the aforementioned JP cabinet energy-saving optimization control method embodiment, and will not be repeated here.

[0064] Please see Figure 3 , Figure 3 This is a schematic block diagram of the structure of a terminal device provided in an embodiment of the present invention.

[0065] like Figure 3 As shown, the terminal device 300 includes a processor 301 and a memory 302, which are connected via a bus 303, such as an I2C (Inter-integrated Circuit) bus.

[0066] Specifically, processor 301 provides computing and control capabilities to support the operation of the entire terminal device. Processor 301 can be a Central Processing Unit (CPU), but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0067] Specifically, the memory 302 can be a Flash chip, a read-only memory (ROM) disk, an optical disk, a USB flash drive, or a portable hard drive, etc.

[0068] Those skilled in the art will understand that Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the embodiments of the present invention, and does not constitute a limitation on the terminal device to which the embodiments of the present invention are applied. A specific server may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0069] The processor is used to run a computer program stored in a memory, and when executing the computer program, implements any of the energy-saving optimization control methods for the JP cabinet provided in the embodiments of the present invention.

[0070] In one embodiment, the processor is configured to run a computer program stored in memory, and when executing the computer program, perform the following steps: The voltage phase at the main incoming line and the current phase of each distribution branch are acquired in real time, and the phase synchronization margin between the JP cabinet and each branch is generated based on the voltage phase and each current phase. The current active power threshold is determined based on the phase synchronization margin and the preset active power threshold, and it is determined whether to optimize the JP cabinet for energy saving based on the active power of the JP cabinet within a preset time period and the current active power threshold. If so, perform phase compensation on each of the aforementioned branches; If not, maintain the current operating status of the JP cabinet and return to the step of obtaining the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch in real time, so as to determine whether to enter the optimization window period in the next round.

[0071] It should be noted that those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the terminal equipment described above can be referred to the corresponding process in the aforementioned embodiment of the energy-saving optimization control method for the JP cabinet, and will not be repeated here.

[0072] This invention also provides a computer storage medium for computer-readable storage, wherein the storage medium stores one or more programs that can be executed by one or more processors to implement the steps of any of the JP cabinet energy-saving optimization control methods provided in the specification of this invention.

[0073] The storage medium can be an internal storage unit of the terminal device described in the foregoing embodiments, such as the hard drive or memory of the terminal device. Alternatively, the storage medium can be an external storage device of the terminal device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card equipped on the terminal device.

[0074] Those skilled in the art will understand that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware embodiments, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0075] It should be understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. It should be noted that, herein, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0076] The sequence numbers of the above embodiments of the present invention are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. The above descriptions are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An energy-saving optimization control method for a JP cabinet, characterized in that, include: The voltage phase at the main incoming line and the current phase of each distribution branch are acquired in real time, and the phase synchronization margin between the JP cabinet and each branch is generated based on the voltage phase and each current phase. The current active power threshold is determined based on the phase synchronization margin and the preset active power threshold, and it is determined whether to optimize the JP cabinet for energy saving based on the active power of the JP cabinet within a preset time period and the current active power threshold. If so, perform phase compensation on each of the aforementioned branches; If not, maintain the current operating status of the JP cabinet and return to the step of obtaining the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch in real time, so as to determine whether to enter the optimization window period in the next round.

2. The energy-saving optimization control method for the JP cabinet according to claim 1, characterized in that, The generation of phase synchronization margin between the JP cabinet and each branch based on the voltage phase and each of the current phases includes: Calculate the phase difference between the voltage phase and each of the current phases respectively; Determine the maximum phase difference among the stated phase differences, and calculate the dispersion among the stated phase differences; Calculate the weighted average between the maximum phase difference and the dispersion; wherein the weighting coefficient of the maximum phase difference is greater than the weighting coefficient of the dispersion; The phase synchronization margin is generated based on the weighted average value.

3. The energy-saving optimization control method for the JP cabinet according to claim 1, characterized in that, The process of determining the current active power threshold based on the phase synchronization margin and a preset active power threshold includes: The target synchronization margin influence coefficient is calculated based on the preset maximum synchronization margin influence coefficient, minimum synchronization margin influence coefficient, and phase synchronization margin; wherein, the phase synchronization margin is negatively correlated with the target synchronization margin influence coefficient. The product of the target synchronization margin influence coefficient and the active power threshold is determined as the current active power threshold.

4. The energy-saving optimization control method for the JP cabinet according to claim 1, characterized in that, The step of determining whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet within a preset time period and the current active power threshold includes: Extract the active power sequence of the JP cabinet within a preset time period from the preset database; The first-order absolute difference between two adjacent active power values ​​in the active power sequence is calculated sequentially to obtain the first-order absolute difference sequence corresponding to the active power sequence. Determine whether each first-order difference absolute value in the first-order difference absolute value sequence is less than a preset first-order difference absolute value, and determine whether the current active power of the JP cabinet is less than the current active power threshold. When each first-order difference absolute value in the first-order difference absolute value sequence is less than a preset first-order difference absolute value, and the current active power of the JP cabinet is less than the current active power threshold, it is determined that the energy-saving optimization window period has been entered. When any first-order difference absolute value in the first-order difference absolute value sequence is not less than a preset first-order difference absolute value, and / or the current active power of the JP cabinet is not less than the current active power threshold, it is determined that the energy-saving optimization window period will not be entered.

5. The energy-saving optimization control method for the JP cabinet according to claim 1, characterized in that, The phase compensation for each of the branches includes: Among the branches, the branch to be compensated is determined; wherein the current phase of the branch to be compensated lags behind the voltage phase; Phase compensation is performed on each of the branches to be compensated.

6. The energy-saving optimization control method for the JP cabinet according to claim 1, characterized in that, The phase compensation for each of the branches includes: Among the branches, the branch to be compensated is determined; wherein the phase difference between the current phase and the voltage phase corresponding to the branch to be compensated is greater than a preset phase difference; Phase compensation is performed on each of the branches to be compensated.

7. The energy-saving optimization control method for the JP cabinet according to any one of claims 5 or 6, characterized in that, The phase compensation for each of the branches to be compensated includes: For each of the branches to be compensated, the capacitive reactive power corresponding to the branch to be compensated is calculated based on the current apparent power of the branch to be compensated and the phase difference corresponding to the branch to be compensated, and the reactive power compensation device in the JP cabinet is controlled to switch the capacitive reactive power to the distribution bus where the branch to be compensated is located.

8. An energy-saving optimization control system for a JP cabinet, characterized in that, include: The generation module is used to acquire the voltage phase at the main incoming line and the current phase of each distribution branch in real time, and generate the phase synchronization margin between the JP cabinet and each branch based on the voltage phase and each current phase. The judgment module is used to determine the current active power threshold based on the phase synchronization margin and the preset active power threshold, and to determine whether to perform energy-saving optimization on the JP cabinet based on the active power of the JP cabinet in the preset time period and the current active power threshold. The first execution module is used to determine the phase compensation of each branch when performing energy-saving optimization on the JP cabinet; The second execution module is used to determine whether to maintain the current operating state of the JP cabinet when energy-saving optimization is not performed, and to return to the step of real-time acquisition of the voltage phase at the main incoming line of the JP cabinet and the current phase of each distribution branch, so as to determine whether to enter the optimization window period in the next round.

9. A terminal device, characterized in that, The terminal device includes a processor and a memory; The memory is used to store computer programs; The processor is used to execute the computer program and, when executing the computer program, implement the energy-saving optimization control method for the JP cabinet as described in any one of claims 1 to 7.

10. A computer storage medium for computer storage, characterized in that, The computer storage medium stores one or more programs, which can be executed by one or more processors to implement the energy-saving optimization control method for the JP cabinet according to any one of claims 1 to 7.

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