Dynamic performance optimization control method and system for primary and secondary fusion pole-mounted circuit breaker

Abstract

The invention discloses a dynamic performance optimization control method and system for a primary and secondary fusion pole-mounted circuit breaker, and relates to the technical field of circuit breaker control, and the method comprises the steps: activating an integrated sensor to carry out the real-time monitoring of a circuit breaker, and obtaining the sensing monitoring information; evaluating and analyzing the sensing monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index; and based on the dynamic performance index, calling a predetermined optimization strategy to perform optimization control on a primary and secondary fusion column of the circuit breaker. The technical problems that in the prior art, a traditional circuit breaker lacks comprehensive real-time monitoring and intelligent control, and the equipment performance is difficult to accurately evaluate and optimize under the complex working condition are solved, and the purpose that the equipment performance is accurately evaluated and optimized through real-time multi-dimensional monitoring and dynamic performance evaluation in combination with an intelligent optimization control strategy is achieved. And the performance stability and the service life of the circuit breaker under complex working conditions are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breaker control, and in particular to a dynamic performance optimization control method and system for a primary-secondary fusion pole-mounted circuit breaker. Background Art

[0002] In traditional power distribution systems, integrated primary and secondary pole-mounted circuit breakers serve as electrical protection devices, primarily used to isolate electrical faults and prevent equipment damage. With the continuous increase in grid load and the increasing complexity of distribution systems, traditional circuit breakers often face performance degradation, overheating, and insulation aging during long-term operation, resulting in the devices being unable to operate effectively under high-load or complex operating conditions. While some circuit breakers are equipped with simple monitoring sensors in existing technologies, these devices often fail to provide comprehensive, real-time monitoring of the circuit breaker's electrical, mechanical, and insulation conditions, lacking flexible adjustment and optimization capabilities. For example, the sampling frequency and timestamps of current sensors and displacement sensors may be inconsistent (the current sampling period is 500ms, while the displacement sampling period may be 100ms), resulting in asynchrony in the time dimension of the sensed and monitored information. This asynchrony can cause phase shifts when integrating operating status data, vacuum interrupter contact displacement data, and pole insulation performance data, thereby affecting the accuracy of performance evaluation.

[0003] In addition, most existing technologies rely on manual intervention and regular inspections for equipment maintenance, which can easily overlook some potential hidden faults, leading to frequent equipment failures or prolonged downtime, affecting the stability and reliability of the power distribution system. Summary of the Invention

[0004] This application provides a dynamic performance optimization control method and system for a primary-secondary integrated pole-mounted circuit breaker, which is used to solve the technical problem in the existing technology that traditional circuit breakers lack comprehensive real-time monitoring and intelligent control, and are difficult to accurately evaluate and optimize equipment performance under complex working conditions.

[0005] In a first aspect of the present application, a method for dynamic performance optimization control of a circuit breaker on a primary-secondary fusion column is provided, the method comprising: activating an integrated sensor to perform real-time monitoring of the circuit breaker to obtain sensory monitoring information; evaluating and analyzing the sensory monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index; and based on the dynamic performance index, retrieving a predetermined optimization strategy to optimize control of the primary-secondary fusion column of the circuit breaker.

[0006] The second aspect of the present application provides a dynamic performance optimization control system for a circuit breaker on a primary and secondary fusion column, the system comprising: a real-time perception monitoring module, the real-time perception monitoring module being used to activate an integrated sensor to perform real-time monitoring of the circuit breaker to obtain perception monitoring information; a performance evaluation and analysis module, the performance evaluation and analysis module being used to evaluate and analyze the perception monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index; and an optimization control module, the optimization control module being used to call a predetermined optimization strategy based on the dynamic performance index to perform optimal control on the primary and secondary fusion columns of the circuit breaker.

[0007] One or more technical solutions provided in this application have at least the following technical effects or advantages: The dynamic performance optimization control method and system of a primary-secondary integrated pole-mounted circuit breaker provided in the present application relate to the field of circuit breaker control technology. The method and system monitor the electrical, mechanical and insulation performance data of the circuit breaker in real time through an integrated sensor, and conduct a comprehensive evaluation based on multi-dimensional sensing and monitoring information using a dynamic performance index. According to the evaluation results, a predetermined optimization strategy is called to automatically adjust the equipment's heat dissipation, insulation, mechanical control and other parameters to ensure that the circuit breaker always maintains optimal performance under different working conditions. This solves the technical problem in the prior art that traditional circuit breakers lack comprehensive real-time monitoring and intelligent control, making it difficult to accurately evaluate and optimize equipment performance under complex working conditions. The method and system achieve the technical effect of improving the performance stability and service life of the circuit breaker under complex working conditions through real-time multi-dimensional monitoring and dynamic performance evaluation combined with intelligent optimization control strategies. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 A flow chart of a method for optimizing the dynamic performance of a primary / secondary fusion column mounted circuit breaker according to an embodiment of the present application; Figure 2 Schematic diagram of the structure of a dynamic performance optimization control system for a primary-secondary fusion pole-mounted circuit breaker provided in an embodiment of the present application.

[0010] Description of the accompanying drawings: real-time perception and monitoring module 11, performance evaluation and analysis module 12, optimization and control module 13. DETAILED DESCRIPTION

[0011] This application provides a dynamic performance optimization control method and system for a primary-secondary integrated pole-mounted circuit breaker, which is used to solve the technical problem in the existing technology that traditional circuit breakers lack comprehensive real-time monitoring and intelligent control, and are difficult to accurately evaluate and optimize equipment performance under complex working conditions.

[0012] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0013] It should be noted that the terms "first", "second", etc. in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices.

[0014] Example 1, as Figure 1 As shown, the present application provides a dynamic performance optimization control method for a primary-secondary fusion pole-mounted circuit breaker, the method comprising: P10: Activate the integrated sensor to monitor the circuit breaker in real time and obtain the sensing monitoring information.

[0015] Furthermore, step P10 in the embodiment of the present application further includes: P11: The circuit breaker is monitored in real time through the current sensor, dual voltage sensor, and temperature sensor in the integrated sensor to obtain operating status data; P12: The position of the vacuum interrupter contact of the circuit breaker is monitored in real time through the displacement sensor in the integrated sensor to obtain vacuum interrupter contact displacement data; P13: The pole insulation performance of the circuit breaker is monitored in real time through the insulation detection sensor in the integrated sensor to obtain pole insulation performance data; P14: The operating status data, the vacuum interrupter contact displacement data, and the pole insulation performance data constitute the sensing monitoring information.

[0016] It should be understood that by activating multiple types of sensor elements in the integrated sensor, the electrical, mechanical and insulation status data of the circuit breaker can be comprehensively acquired to form high-dimensional perception and monitoring information, providing data support for subsequent performance evaluation and optimized control.

[0017] First, the current sensor, dual voltage sensor, and temperature sensor configured in the integrated sensor are activated to collect real-time data on the circuit breaker's operating current, voltage status, and temperature at key locations. The current sensor uses a Hall-effect or fiber-optic current transformer, which can accurately detect dynamic changes in the circuit breaker's load and fault currents. The dual voltage sensor, located on the circuit breaker's primary side and secondary control module, utilizes a high-precision voltage sampling unit to simultaneously monitor input and output voltages, facilitating the identification of operational anomalies such as voltage sags and overvoltages. Temperature sensors are located on the circuit breaker's busbars, contact connection points, and the exterior of the arc extinguishing chamber housing, monitoring the thermal status of each component in real time to assess the equipment's thermal stability and overload risk. This data, collectively referred to as operating status data, is continuously uploaded to the edge computing module or remote master system via a field terminal at a fixed sampling period (e.g., 500ms to 1s).

[0018] Next, the displacement sensor arranged in the integrated sensor is activated to continuously monitor the position of the vacuum interrupter contact inside the circuit breaker. The displacement sensor can be of grating encoding type, Hall linear sensing type or laser reflection type, and is installed in the connecting rod structure between the mechanical operating mechanism and the moving contact of the circuit breaker to accurately collect the opening distance, displacement speed and end dwell position of the contact during the closing and opening process. This data can reflect the mechanical response state of the interrupter and the degree of contact wear in real time, which helps to identify potential faults such as operating mechanism hysteresis, excessive wear or mechanical jamming. The collected contact motion trajectory data is recorded as vacuum interrupter contact displacement data, which can be synchronously uploaded to the equipment status perception module for dynamic modeling.

[0019] Next, the insulation detection sensor configured in the integrated sensor is activated to continuously monitor the insulation performance of the circuit breaker's poles. The insulation detection sensor may include a power frequency leakage current detection device, a dielectric loss detection module, or a surface conductivity monitoring device. It is installed on the circuit breaker pole housing and the ground connection, and can capture changes in the dielectric properties of the pole under different environmental conditions (such as humidity, high temperature, and contamination). This monitoring can effectively identify the risk of insulation degradation of the pole due to aging, moisture, or contamination, providing a basis for taking early maintenance or replacement measures. The obtained insulation status parameters constitute the pole insulation performance data and participate in the calculation of the equipment performance evaluation model as a key health factor.

[0020] Finally, the operating status data, vacuum interrupter contact displacement data, and pole insulation performance data acquired in the above steps are integrated into a multi-dimensional system to form unified, structured perception and monitoring information. This perception and monitoring information features strong temporal synchronization, a wide range of data sources, and comprehensive diagnostic dimensions, covering key parameters during circuit breaker operation. This design enables high-precision, real-time monitoring of electrical performance, mechanical operation characteristics, and insulation status without changing the existing circuit breaker structure.

[0021] Furthermore, step P11 of the embodiment of the present application further includes: P11-1: The three-phase current and zero-sequence current are simultaneously measured by the current sensor; P11-2: The first voltage is monitored by the first voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the load side; P11-3: The second voltage is monitored by the second voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the power supply side; P11-4: The temperature data is monitored by the temperature sensor in the dual voltage sensor; P11-5: The three-phase current, the zero-sequence current, the first voltage, the second voltage and the temperature data constitute the operating status data.

[0022] Optionally, the specific process of obtaining operating status data through the current sensor and dual voltage sensor in the integrated sensor can be further refined to ensure the comprehensiveness and accuracy of the monitoring data, thereby providing a reliable basis for subsequent performance evaluation.

[0023] First, the built-in current sensors synchronously measure the three-phase current and zero-sequence current. The three-phase current reflects the circuit breaker's current load and identifies operational anomalies such as overload, imbalance, or sudden current changes. The zero-sequence current detects ground faults or asymmetric faults in the system, playing a key role in ensuring the accuracy of system protection. Current sampling is performed continuously at a fixed cycle to ensure the dynamic characteristics of the current signal are captured.

[0024] Subsequently, dual voltage sensors deployed in the integrated sensor collect voltage signals across the circuit breaker. The first voltage sensor, located on the load side, monitors the voltage at the circuit breaker's output terminal. This data reflects power quality, load response, and terminal voltage stability. The second voltage sensor, located on the power supply side, collects the supply voltage from the higher-level system. By comparing this voltage with the first voltage, it can analyze internal voltage drops, voltage disturbance conduction paths, and possible internal contact anomalies in real time, assisting in fault location. The simultaneous acquisition of the first and second voltages facilitates the construction of a state model of the relationship between the internal and external electrical responses of the circuit breaker.

[0025] Simultaneously, temperature data from the equipment during operation is collected using temperature sensors within the integrated sensor. These sensors are typically installed in areas of the circuit breaker where heat sources are concentrated, such as the conductive connection terminals, arc chamber housing, or insulating support joints. These sensors monitor the thermal stability of key components. This temperature data not only reveals the equipment's thermal load but also helps identify abnormal temperature rises caused by poor contact, overloaded operation, or long-term aging.

[0026] Finally, the collected three-phase current, zero-sequence current, first voltage, second voltage, and temperature data are organized into structured operating status data, which serves as a key component in building circuit breaker perception and monitoring information. This operating status data set features high sampling granularity, comprehensive parameter coverage, and strong dynamic correlation. It not only supports subsequent dynamic performance index calculations but also provides a solid data foundation for predictive maintenance, fault pre-diagnosis, and intelligent control strategies for circuit breakers.

[0027] Furthermore, before the three-phase current, the zero-sequence current, the first voltage, the second voltage, and the temperature data are combined to form the operating status data, the embodiment of the present application further includes step P11-5a, and step P11-5a further includes: P11-51a: Calculate the shell-to-ground voltage based on the first voltage and the second voltage; P11-52a: When the shell-to-ground voltage is not within a predetermined threshold, issue a safety abnormality signal.

[0028] Specifically, in order to improve the online monitoring capability of the pole-mounted circuit breaker's operational safety, before the three-phase current, zero-sequence current, first voltage, second voltage, and temperature data are aggregated to form the operational status data, steps for grounding status determination and fault warning can be further introduced to achieve real-time assessment of the grounding status of the circuit breaker housing and abnormality detection.

[0029] Specifically, first, the circuit breaker case-to-ground voltage is calculated using the difference relationship between the electrical reference points using the two collected voltage data, the first voltage and the second voltage. Specifically, the case-to-ground voltage can be calculated by measuring the voltage difference between the load side and the power side, and combining it with the equipment body-to-ground potential difference model to deduce the actual potential offset between the circuit breaker case and the ground. This calculation process can be automatically completed in the equipment-side edge processing unit or remote monitoring system based on a preset algorithm, without the need for additional ground voltage sensors. The case-to-ground voltage is an important parameter for evaluating the insulation performance and grounding safety of circuit breakers. Under normal circumstances, the case-to-ground voltage should be kept within a safe range, and its value can reflect the integrity of the circuit breaker insulation system and the reliability of the grounding system.

[0030] Next, when the calculated shell-to-ground voltage is not within the predetermined threshold range, that is, its value is higher or lower than the set upper or lower limit, it indicates that the circuit breaker casing has abnormal operating conditions such as poor grounding, insulation damage, or induced charge accumulation. At this time, the system will immediately generate a safety abnormality signal. This abnormal signal can be reported to the main station in real time through the communication module, or the on-site alarm device can be linked to issue an audible and visual alarm to prompt the operation and maintenance personnel to intervene. This type of mechanism can issue an effective early warning before the equipment causes more serious insulation accidents or personal electric shock risks. Among them, the predetermined threshold is a voltage range pre-set according to the circuit breaker's design standards and safe operation requirements. When the shell-to-ground voltage exceeds this range, it may indicate that the circuit breaker's insulation system is faulty or there is an abnormality in the grounding system.

[0031] By adding steps, not only can the operating status data of the circuit breaker be fully monitored, but also real-time evaluation and early warning of key safety parameters can be performed, further enhancing the reliability and safety of the circuit breaker operating status monitoring system.

[0032] Furthermore, after the operating status data, the vacuum interrupter contact displacement data, and the pole insulation performance data form the sensing monitoring information, the embodiment of the present application further includes step P14a, which further includes: P14-1a: Obtain the opening and closing operation record of the circuit breaker; P14-2a: Retrieve the predetermined opening and closing operation index to analyze the opening and closing operation record to obtain opening and closing operation data; P14-3a: Add the opening and closing operation data to the perception monitoring information; wherein, the predetermined opening and closing operation index includes at least opening and closing speed, synchronicity and rebound amplitude.

[0033] In one possible embodiment of the present application, to further enhance the comprehensive monitoring and evaluation of the pole-mounted circuit breaker status, step P14a is introduced to supplement the relevant data of the circuit breaker opening and closing operations to ensure that the perception monitoring information not only covers the electrical, mechanical, and insulation performance data of the equipment, but also includes data on the equipment's operational performance, thereby providing a more comprehensive evaluation of the circuit breaker's dynamic performance.

[0034] First, the circuit breaker's opening and closing operation log is acquired. This log details each opening or closing operation, including the time of operation, operation type (e.g., opening or closing), duration, and the specific time of contact actuation. This log can be collected and stored in real time using the circuit breaker's operation recording module or a remote control system, with high time accuracy and reliability.

[0035] Next, the predefined opening and closing operation indicators are retrieved and the acquired opening and closing operation records are analyzed. These predefined opening and closing operation indicators include at least opening and closing speed, synchronicity, and rebound amplitude. Opening and closing speed refers to the speed at which the circuit breaker contacts move from opening to closing or from closing to opening. Excessively fast opening speeds can cause mechanical shock, while excessively slow speeds can affect the circuit breaker's breaking capacity. Closing speed directly affects the circuit breaker's closing performance and synchronicity. Synchronicity refers to the degree to which the three-phase contacts make simultaneous contact during the circuit breaker closing operation. Good synchronicity can reduce current surges during closing and improve power system stability. Bounce amplitude refers to the extent to which the circuit breaker contacts rebound during closing due to mechanical shock and other factors. Excessive rebound amplitude can cause contact damage or poor contact. By retrieving these predefined indicators and analyzing the opening and closing operation records, opening and closing operation data can be obtained. This data can quantify the circuit breaker's performance during opening and closing operations, providing an important basis for subsequent performance evaluation.

[0036] Finally, the analyzed opening and closing operation data is added to the perception monitoring information. This already includes operating status data, vacuum interrupter contact displacement data, and pole insulation performance data. The addition of opening and closing operation data further enriches the perception monitoring information. This allows the perception monitoring information to reflect not only the static operating state of the circuit breaker but also its performance during dynamic operation. This data will serve as an important input to the subsequent performance evaluation mechanism, providing more comprehensive data support for the calculation of dynamic performance indices and the invocation of optimization strategies, thereby achieving precise optimization control of the primary and secondary integrated pole-mounted circuit breaker.

[0037] P20: Evaluate and analyze the sensing monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index. The performance evaluation mechanism includes a breaking capacity evaluation plan, an insulation performance evaluation plan, and a mechanical characteristics evaluation plan.

[0038] Furthermore, step P20 in this embodiment of the present application further includes: P21: Obtain the predetermined maximum short-circuit current of the circuit breaker; P22: Coordinately evaluate the predetermined maximum short-circuit current, the three-phase current, and the zero-sequence current according to the breaking capacity evaluation plan to obtain an initial breaking capacity index; P23: Calibrate the initial breaking capacity index in combination with the temperature data to obtain a breaking capacity index; P24: Coordinately evaluate the first voltage, the second voltage, and the pole insulation performance data according to the insulation performance evaluation plan to obtain an insulation performance index; P25: Coordinately evaluate the vacuum interrupter contact displacement data and the opening and closing operation data according to the mechanical property evaluation plan to obtain a mechanical performance index; P26: Perform a weighted calculation of the coefficient of variation on the breaking capacity index, the insulation performance index, and the mechanical performance index to obtain the dynamic performance index.

[0039] It should be understood that the dynamic performance index is derived by comprehensively evaluating and analyzing the sensory monitoring information according to the performance evaluation mechanism. This performance evaluation mechanism covers the breaking capacity evaluation plan, the insulation performance evaluation plan, and the mechanical characteristics evaluation plan to ensure that the performance of the circuit breaker is quantitatively evaluated from multiple key dimensions.

[0040] First, determine the circuit breaker's maximum short-circuit current. This is the theoretical maximum short-circuit current value determined based on the circuit breaker's design specifications and installation environment. This parameter provides a basic reference for evaluating the breaking capacity and is typically provided by the circuit breaker manufacturer or calculated based on actual load and grid characteristics.

[0041] Next, based on the interrupting capacity assessment plan, a coordinated evaluation is performed between the predetermined maximum short-circuit current and the three-phase and zero-sequence currents from the sensory monitoring information. This evaluation process compares the difference between the predetermined maximum short-circuit current and the real-time current state to determine whether the current load is likely to exceed the circuit breaker's interrupting capacity. This process generates an initial interrupting capacity index, which reflects the adequacy of the circuit breaker's current interrupting capacity and can be assessed by comparing the required interrupting capacity with the actual load.

[0042] The initial breaking capacity index is then calibrated, taking temperature data into account. Temperature changes directly affect the electrical and mechanical performance of the circuit breaker, particularly heat accumulation caused by overload or prolonged operation. Therefore, temperature fluctuations can affect breaking capacity. Excessively high temperatures can lead to increased contact wear or reduced arc extinguishing performance. The breaking capacity index must be appropriately adjusted based on the temperature data. For example, a temperature influence coefficient can be calculated based on actual temperature and a reasonable temperature threshold. The initial breaking capacity index is then calibrated using this temperature influence coefficient to obtain an accurate breaking capacity index.

[0043] Next, based on the insulation performance assessment plan, the first and second voltages are collaboratively evaluated alongside the pole insulation performance data. Insulation performance is fundamental to the safe operation of a circuit breaker. By evaluating voltage and insulation performance data, the circuit breaker's insulation performance can be quantified. For example, the insulation status of a circuit breaker under different voltage conditions can be assessed, focusing on any decline in insulation performance. This results in an insulation performance index, which reflects the circuit breaker's insulation reliability and potential risks.

[0044] Subsequently, according to the mechanical characteristics assessment plan, a collaborative evaluation of the vacuum interrupter contact displacement data and opening and closing operation data was conducted. Mechanical characteristics directly affect the operational performance and reliability of the circuit breaker. By evaluating contact displacement and opening and closing operation data, the circuit breaker's mechanical performance can be quantified. This assessment focuses on the operational reliability of the circuit breaker's mechanical components, such as contact position, opening speed, and synchronization. The mechanical structure is checked for abnormalities such as sticking, wear, or rebound, and the mechanical performance index is derived, which reflects the mechanical response capability and reliability of the circuit breaker.

[0045] Finally, the previously derived breaking capacity index, insulation performance index, and mechanical performance index are weighted by the coefficient of variation. This combined performance indicator yields the final dynamic performance index. This weighted calculation considers the variability and weighting of each performance indicator, forming a quantitative indicator that comprehensively assesses the current performance status of the circuit breaker. The weighted coefficient of variation calculation effectively measures the stability and reliability of device performance, ultimately yielding a dynamic performance index that comprehensively reflects the overall operational health of the circuit breaker. This dynamic performance index provides data support for subsequent optimization and control, helping to predict equipment maintenance cycles and potential failure risks.

[0046] Furthermore, after performing weighted calculation of the coefficient of variation on the breaking capacity index, the insulation performance index, and the mechanical performance index to obtain the dynamic performance index, the embodiment of the present application further includes step P26a, which further includes: P26-1a: Obtain the historical operation record of the circuit breaker, wherein the historical operation record includes a first maintenance inspection record; P26-2a: Analyze the first maintenance inspection record to obtain a first performance loss coefficient, and add them to obtain a historical loss coefficient; P26-3a: Obtain the historical operation time according to the historical operation record, and obtain a performance correction factor in conjunction with the historical loss coefficient; P26-4a: Correct and adjust the dynamic performance index based on the performance correction factor.

[0047] Optionally, the calculation process of the dynamic performance index can be further expanded and dynamically corrected in combination with historical operation records to more accurately reflect the actual performance changes of the circuit breaker in different working cycles, ensuring that the evaluation is more in line with the long-term operation of the equipment.

[0048] Specifically, the first step is to obtain the circuit breaker's historical operating records. These records contain long-term operational data, particularly the first maintenance inspection records, which document the initial and periodic inspections of the circuit breaker. These records detail the inspection results, performance status, repair items, and replaced parts during each inspection. These records are a key data source for evaluating the equipment's long-term operational performance, providing information on past failures, maintenance status, and performance trends.

[0049] Next, the first maintenance inspection records are analyzed. Through in-depth analysis of the data within these inspection records, the first performance loss coefficient is derived. This coefficient quantifies the performance loss caused by factors such as failures, wear, and aging during the equipment's historical operation. By statistically analyzing and calculating performance degradation observed during these inspections (such as contact wear and arc chamber degradation), a basis for revising subsequent evaluation models is provided. All performance loss coefficients are summed to form the historical loss coefficient, which reflects the cumulative effect of the overall performance degradation of the circuit breaker due to historical factors.

[0050] Next, the historical operating hours of the circuit breaker are calculated based on historical operating records. This refers to the cumulative operating time of the circuit breaker since it was put into operation. This time period can be determined from the device's operation log or accumulated working hours. By analyzing the historical operating hours in conjunction with the historical loss coefficient, a performance correction factor is derived. The performance correction factor reflects the cumulative change in device performance over time and its degradation trend over time. This factor helps quantify the performance loss caused by the device's increased use.

[0051] Finally, the dynamic performance index is adjusted based on the performance correction factor. The dynamic performance index is a comprehensive performance indicator calculated using a weighted coefficient of variation, but it is based solely on current monitoring data. By introducing the performance correction factor, the circuit breaker's historical performance loss and aging can be taken into account, allowing for more precise corrections to the dynamic performance index. This revised dynamic performance index more comprehensively reflects the circuit breaker's actual performance, avoiding over-reliance on data from a single point in time and improving the reliability of equipment management and maintenance.

[0052] P30: Based on the dynamic performance index, a predetermined optimization strategy is called to optimize the control of the primary and secondary fusion columns of the circuit breaker.

[0053] Furthermore, step P30 in the embodiment of the present application further includes: P31: When the dynamic performance index does not meet the predetermined index limit, determine whether the breaking capacity index reaches the first index limit; P32: If not, call the dual-tower heat dissipation solution in the predetermined optimization strategy to control the heat dissipation of the circuit breaker, wherein the dual-tower heat dissipation solution includes placing semiconductor cooling plates close to the radiator to pre-cool the circuit breaker and punching holes in the connecting copper busbar to concentrate the cooling effect of the circuit breaker; P33: If reached, determine whether the insulation performance index reaches the second index limit, including: P33-1: If the condition is not met, the pole insulation solution in the predetermined optimization strategy is retrieved to perform pole insulation packaging on the circuit breaker, wherein the pole insulation solution is to cast the arc extinguishing chamber, conductive rod and integrated sensor of the circuit breaker into one body with epoxy resin; P33-2: If the condition is met, determine whether the mechanical performance index reaches the third index limit, including: P33-21: If the target is not reached, the oil buffer solution in the predetermined optimization strategy is used to perform shock absorption control on the circuit breaker, wherein the oil buffer solution refers to using an oil pressure buffer instead of a rubber pad to control the opening and closing of the circuit breaker; P33-22: If the target is reached, the dual improvement solution in the predetermined optimization strategy is used to perform performance improvement control on the circuit breaker. The dual improvement solution includes a first improvement solution and a second improvement solution, wherein the first improvement solution refers to increasing the control voltage of the circuit breaker, and the second improvement solution refers to replacing a press-fit type IGBT chip with a soldered type IGBT chip.

[0054] Specifically, based on the calculated dynamic performance index, a pre-defined optimization strategy is invoked to optimize control of the primary and secondary fusion columns of the pole-mounted circuit breaker, ensuring optimal performance and safety under varying operating conditions. This optimization process gradually determines whether each performance indicator meets predetermined limits, and then selects the appropriate control strategy.

[0055] First, when the dynamic performance index fails to meet the predetermined index limit, further evaluation is required to determine whether the breaking capacity index meets the first index limit. The first index limit is a predetermined breaking capacity threshold based on the circuit breaker's design standards and operational requirements, and is used to determine whether the circuit breaker requires heat dissipation optimization. The dynamic performance index comprehensively evaluates circuit breaker performance, while the breaking capacity index focuses on the circuit breaker's performance in terms of breaking current. If the breaking capacity index fails to meet the first index limit, it indicates that the circuit breaker may not be able to effectively break under high load or short circuit conditions, posing a safety hazard.

[0056] At this point, the dual-tower cooling solution from the pre-defined optimization strategy is invoked to control the circuit breaker's heat dissipation. This cooling solution uses active cooling technology to pre-cool the circuit breaker by placing semiconductor cooling sheets close to the radiator, thereby lowering the device temperature and improving breaking capacity. Furthermore, by drilling holes in the connecting copper busbars, the cooling effect is concentrated, further improving heat dissipation efficiency. This method effectively reduces the circuit breaker's operating temperature, thereby improving its breaking capacity and ensuring safe and stable operation in high-temperature environments.

[0057] If the breaking capacity index reaches the first index limit, it means that the breaking capacity of the circuit breaker is within the normal range. At this time, it is necessary to further determine whether the insulation performance index reaches the second index limit. The second index limit is a threshold set according to the insulation performance requirements of the circuit breaker, which is used to determine whether the circuit breaker needs insulation optimization. If the insulation performance index does not reach the second index limit, it means that there may be risks such as insulation aging, moisture or flashover. In this case, the system will call the pole insulation scheme in the predetermined optimization strategy to perform pole insulation packaging on the circuit breaker. The pole insulation scheme refers to the use of epoxy resin to cast the arc extinguishing chamber, conductive rod and integrated sensor of the circuit breaker into one. This packaging method can effectively improve the insulation performance of the circuit breaker, prevent short-circuit accidents caused by insulation aging or moisture, and ensure the safe operation of the power system.

[0058] If the insulation performance index reaches the second index limit, it means that the insulation performance of the circuit breaker is within the normal range. At this time, it is necessary to further determine whether the mechanical performance index reaches the third index limit. The third index limit is a threshold set according to the mechanical performance requirements of the circuit breaker and is used to determine whether the circuit breaker needs mechanical optimization. If the mechanical performance index does not reach the third index limit, it means that there are potential problems with the mechanical operation of the circuit breaker, such as contact wear, loose mechanical parts, or rebound. At this time, the system will call the oil buffer solution in the predetermined optimization strategy for shock absorption control. This solution controls the mechanical vibration during the opening and closing process by replacing the traditional rubber pad with an oil pressure buffer, reducing operational shock and improving mechanical performance and service life.

[0059] If the mechanical performance index reaches the third index limit, it means that the mechanical performance of the circuit breaker is in good condition, and then the last optimization step is entered, and the dual improvement scheme in the predetermined optimization strategy is called to improve the performance of the circuit breaker. The dual improvement scheme includes the first improvement scheme and the second improvement scheme, which respectively optimize the electrical control and key components of the equipment. The first improvement scheme can enhance the breaking performance and response speed of the circuit breaker by increasing the control voltage, so that it can maintain a stable operating state under different working conditions. The second improvement scheme can replace the press-fit type IGBT chip with a welded type IGBT chip. The welded type chip has stronger overload resistance and higher electrical efficiency, which can effectively improve the overall performance of the circuit breaker, so that it can still maintain efficient and stable operation under complex working conditions.

[0060] Through the above steps, the dynamic performance index of the circuit breaker can be evaluated and the corresponding optimization strategy can be called up item by item, ensuring that the circuit breaker can always maintain the optimal operating state under different operating conditions. This optimization control strategy based on the dynamic performance index not only improves the safety of the equipment, but also extends its service life and reduces the risk of sudden failure.

[0061] In some possible embodiments, activating integrated sensors to collect multi-sensor data (such as current, voltage, temperature, displacement, and insulation data) is a core step. However, in some embodiments, the synchronization problem of sensor data collection is not solved. For example, the sampling frequency and timestamp of the current sensor and the displacement sensor may be inconsistent (the current sampling period is 500ms, and the displacement sampling period may be 100ms), resulting in the perception monitoring information being out of sync in the time dimension. This asynchrony will cause phase offsets when integrating the operating status data, vacuum interrupter contact displacement data, and pole insulation performance data, thereby affecting the accuracy of the performance evaluation mechanism. Especially under high-load conditions, data delays may be amplified, making the dynamic performance index unable to truly reflect the instantaneous state of the equipment, reducing the real-time and reliability of the optimized control. Essentially, this defect stems from the lack of a unified timing coordination mechanism in the data acquisition module, which is a deficiency at the method implementation level.

[0062] Therefore, as an implementation method to address this shortcoming, this embodiment embeds a distributed time synchronization coprocessor within the real-time sensing and monitoring module. This coprocessor, as a hardware submodule, is integrated within the integrated sensor and provides a unified timestamp reference for all sensors using GPS or a high-precision clock source. Specifically, the coprocessor first dynamically calibrates the sampling period of each sensor (current, voltage, temperature, displacement, and insulation detection). For example, it uses an interpolation algorithm to align the 100ms sampling period of the displacement sensor and the 500ms period of the current sensor to the same time grid. Secondly, the coprocessor uses a data buffer queue mechanism to temporarily store and sort asynchronously arriving data, ensuring that operating status data, vacuum interrupter contact displacement data, and pole insulation performance data are time-synchronized before being incorporated into the sensing and monitoring information. Finally, the coprocessor performs real-time data fusion through an edge computing unit, eliminating phase offsets and outputting time-consistent sensing and monitoring information. This embodiment directly expands the functionality of the real-time sensing and monitoring module without changing the sensor layout. It only requires adding a coprocessor chip at the hardware level and updating the data acquisition logic at the software level.

[0063] This embodiment significantly improves data synchronization, with the following technical effects: the temporal consistency of perception and monitoring information is improved by more than 90%, ensuring that the performance evaluation mechanism is based on an accurate data source; the dynamic performance index can better reflect the true status of the equipment, and the optimized control response delay is reduced to the millisecond level; at the same time, through hardware-level time synchronization, the system's dependence on network conditions is reduced, and the robustness under complex working conditions is enhanced.

[0064] In summary, the embodiments of the present application have at least the following technical effects: This application uses integrated sensors to monitor the electrical, mechanical and insulation conditions of the circuit breaker in real time, which can comprehensively and accurately obtain the operating data of the equipment and improve the accuracy of the equipment health status assessment; based on real-time monitoring data, combined with the performance evaluation mechanism, the dynamic performance index of the circuit breaker is dynamically calculated and obtained to realize the performance evaluation and prediction of the equipment under different working conditions; according to the dynamic performance index, the predetermined optimization strategy is automatically called to optimize the circuit breaker in multiple aspects such as heat dissipation, insulation, and mechanical control to ensure that the equipment always maintains the best operating state; through intelligent optimization control and preventive adjustment, the occurrence of problems such as overload, overheating, and wear is reduced, the service life of the equipment is extended, and the failure rate is reduced; through automated equipment monitoring and control, the dependence on manual intervention is reduced, the operation and maintenance efficiency is improved, and the equipment management cost is reduced; through precise control and optimization of circuit breaker performance, the stability and safety of the distribution system are improved, the outages or accidents caused by equipment failures are reduced, and the reliable operation of the power system is guaranteed.

[0065] The technical effect of improving the performance stability and service life of circuit breakers under complex working conditions has been achieved through real-time multi-dimensional monitoring and dynamic performance evaluation combined with intelligent optimization control strategies.

[0066] The second embodiment is based on the same inventive concept as the method for optimizing the dynamic performance of the primary and secondary fusion column mounted circuit breaker in the above embodiment. Figure 2 As shown, the present application provides a dynamic performance optimization control system for a primary and secondary fusion column mounted circuit breaker. The system and method embodiments in the present application are based on the same inventive concept. The system includes: The real-time sensing and monitoring module 11 is used to activate the integrated sensor to perform real-time monitoring on the circuit breaker and obtain sensing and monitoring information.

[0067] The performance evaluation and analysis module 12 is used to evaluate and analyze the sensing monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index. The performance evaluation mechanism includes a breaking capacity evaluation plan, an insulation performance evaluation plan, and a mechanical property evaluation plan.

[0068] The optimization control module 13 is used to call a predetermined optimization strategy based on the dynamic performance index to optimize the control of the primary and secondary fusion columns of the circuit breaker.

[0069] Furthermore, the real-time perception monitoring module 11 is further configured to perform the following steps: The circuit breaker is monitored in real time by the current sensor, dual voltage sensor, and temperature sensor in the integrated sensor to obtain operating status data; the position of the vacuum interrupter contact of the circuit breaker is monitored in real time by the displacement sensor in the integrated sensor to obtain vacuum interrupter contact displacement data; and the pole insulation performance of the circuit breaker is monitored in real time by the insulation detection sensor in the integrated sensor to obtain pole insulation performance data; the operating status data, the vacuum interrupter contact displacement data, and the pole insulation performance data constitute the sensing monitoring information.

[0070] Furthermore, the real-time perception monitoring module 11 is further configured to perform the following steps: The three-phase current and zero-sequence current are simultaneously measured by the current sensor; the first voltage is monitored by the first voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the load side; the second voltage is monitored by the second voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the power supply side; the temperature data is monitored by the temperature sensor in the dual voltage sensor; the three-phase current, the zero-sequence current, the first voltage, the second voltage and the temperature data constitute the operating status data.

[0071] Furthermore, the real-time perception monitoring module 11 is further configured to perform the following steps: Before the three-phase current, the zero-sequence current, the first voltage, the second voltage and the temperature data form the operating status data, the shell-to-ground voltage is calculated based on the first voltage and the second voltage; when the shell-to-ground voltage is not within a predetermined threshold, a safety abnormality signal is issued.

[0072] Furthermore, the real-time perception monitoring module 11 is further configured to perform the following steps: After the operating status data, the vacuum interrupter contact displacement data, and the pole insulation performance data form the perception monitoring information, the opening and closing operation records of the circuit breaker are obtained; predetermined opening and closing operation indicators are retrieved to analyze the opening and closing operation records to obtain opening and closing operation data; the opening and closing operation data are added to the perception monitoring information; wherein the predetermined opening and closing operation indicators include at least opening and closing speed, synchronicity, and rebound amplitude.

[0073] Furthermore, the performance evaluation and analysis module 12 is further configured to perform the following steps: Obtain a predetermined maximum short-circuit current of the circuit breaker; perform a coordinated evaluation of the predetermined maximum short-circuit current, the three-phase current, and the zero-sequence current according to the breaking capacity evaluation plan to obtain an initial breaking capacity index; calibrate the initial breaking capacity index in combination with the temperature data to obtain a breaking capacity index; perform a coordinated evaluation of the first voltage, the second voltage, and the pole insulation performance data according to the insulation performance evaluation plan to obtain an insulation performance index; perform a coordinated evaluation of the vacuum interrupter contact displacement data and the opening and closing operation data according to the mechanical property evaluation plan to obtain a mechanical performance index; perform a weighted calculation of the coefficient of variation on the breaking capacity index, the insulation performance index, and the mechanical performance index to obtain the dynamic performance index.

[0074] Furthermore, the performance evaluation and analysis module 12 is further configured to perform the following steps: After performing a weighted calculation of the coefficient of variation on the breaking capacity index, the insulation performance index, and the mechanical performance index to obtain the dynamic performance index, a historical operation record of the circuit breaker is obtained, wherein the historical operation record includes a first maintenance inspection record; the first maintenance inspection record is analyzed to obtain a first performance loss coefficient, and the sum is summed to obtain a historical loss coefficient; a historical operating time is obtained based on the historical operation record, and a performance correction factor is obtained in combination with the historical loss coefficient; and the dynamic performance index is corrected and adjusted based on the performance correction factor.

[0075] Furthermore, the optimization control module 13 is further configured to perform the following steps: When the dynamic performance index does not meet the predetermined index limit, determine whether the breaking capacity index reaches the first index limit; if not, call the dual-tower heat dissipation solution in the predetermined optimization strategy to control the heat dissipation of the circuit breaker, wherein the dual-tower heat dissipation solution includes placing the semiconductor cooling plate close to the radiator to pre-cool the circuit breaker and punching holes on the connecting copper busbar to concentrate the cooling effect of the circuit breaker; if it reaches, determine whether the insulation performance index reaches the second index limit, including: if not, call the pole insulation solution in the predetermined optimization strategy The circuit breaker is subjected to pole insulation packaging, wherein the pole insulation solution refers to casting the arc extinguishing chamber, conductive rod and integrated sensor of the circuit breaker into one body with epoxy resin; if it is achieved, determining whether the mechanical performance index reaches the third index limit, including: if it is not achieved, calling the oil buffer solution in the predetermined optimization strategy to perform shock absorption control on the circuit breaker, wherein the oil buffer solution refers to using oil pressure buffer instead of rubber pad to control opening and closing; if it is achieved, calling the dual improvement solution in the predetermined optimization strategy to perform performance improvement control on the circuit breaker. The dual improvement solution includes a first improvement solution and a second improvement solution, wherein the first improvement solution refers to increasing the control voltage of the circuit breaker, and the second improvement solution refers to replacing the press-fit type IGBT chip with a welded type IGBT chip.

[0076] It should be noted that the order in which the embodiments of the present application are presented is for illustrative purposes only and does not necessarily represent the superiority or inferiority of the embodiments. Furthermore, the foregoing descriptions of specific embodiments of this specification are provided. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential sequence shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

[0078] This specification and drawings are merely illustrative of the present application and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Obviously, those skilled in the art may make various modifications and variations to this application without departing from the scope of this application. Thus, this application is intended to include such modifications and variations as fall within the scope of this application and its equivalents.

Claims

1. A dynamic performance optimization control method for a primary / secondary integrated column mounted circuit breaker, characterized in that: include: Activate the integrated sensor to monitor the circuit breaker in real time and obtain the sensing monitoring information; Evaluate and analyze the perception monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index; Based on the dynamic performance index, a predetermined optimization strategy is called to optimize the control of the primary and secondary fusion columns of the circuit breaker.

2. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 1, characterized in that: Activate the integrated sensor to monitor the circuit breaker in real time and obtain sensing monitoring information, including: The circuit breaker is monitored in real time by the current sensor, dual voltage sensor and temperature sensor in the integrated sensor to obtain operating status data; The position of the vacuum interrupter contact of the circuit breaker is monitored in real time by the displacement sensor in the integrated sensor to obtain the displacement data of the vacuum interrupter contact; The insulation performance of the pole of the circuit breaker is monitored in real time by the insulation detection sensor in the integrated sensor to obtain the pole insulation performance data; The operating status data, the vacuum interrupter contact displacement data and the pole insulation performance data constitute the perception monitoring information.

3. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 2, characterized in that: The circuit breaker is monitored in real time by the current sensor, dual voltage sensor, and temperature sensor in the integrated sensor to obtain operating status data, including: The three-phase current and the zero-sequence current are simultaneously measured by the current sensor; A first voltage is obtained by monitoring a first voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the load side; A second voltage is obtained by monitoring the second voltage sensor in the dual voltage sensor, wherein the first voltage sensor is arranged on the power supply side; The temperature data is obtained by monitoring the temperature sensor in the dual voltage sensor; The three-phase current, the zero-sequence current, the first voltage, the second voltage and the temperature data constitute the operating status data.

4. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 3, characterized in that: Before the three-phase current, the zero-sequence current, the first voltage, the second voltage, and the temperature data are combined to form the operating status data, the method further includes: Calculating a housing-to-ground voltage based on the first voltage and the second voltage; When the voltage between the housing and the ground is not at a predetermined threshold, a safety abnormality signal is issued.

5. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 3, characterized in that: After the operating status data, the vacuum interrupter contact displacement data, and the pole insulation performance data form the perception monitoring information, the method further includes: Obtaining the opening and closing operation records of the circuit breaker; Retrieving predetermined opening and closing operation indicators to analyze the opening and closing operation records to obtain opening and closing operation data; Adding the opening and closing operation data to the perception monitoring information; The predetermined opening and closing operation indicators include at least opening and closing speed, synchronicity and rebound amplitude.

6. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 5, characterized in that: in, The performance evaluation mechanism includes a breaking capacity evaluation plan, an insulation performance evaluation plan, and a mechanical characteristics evaluation plan. The perception monitoring information is evaluated and analyzed according to the performance evaluation mechanism to obtain a dynamic performance index, including: obtaining a predetermined maximum short-circuit current of the circuit breaker; performing a coordinated evaluation of the predetermined maximum short-circuit current, the three-phase current, and the zero-sequence current according to the breaking capacity evaluation plan to obtain an initial breaking capacity index; Calibrate the initial breaking capacity index in combination with the temperature data to obtain a breaking capacity index; Coordinately evaluate the first voltage, the second voltage, and the pole insulation performance data according to the insulation performance evaluation plan to obtain an insulation performance index; Coordinately evaluate the vacuum interrupter contact displacement data and the opening and closing operation data according to the mechanical property evaluation plan to obtain a mechanical property index; The breaking capacity index, the insulation performance index and the mechanical performance index are weightedly calculated by coefficient of variation to obtain the dynamic performance index.

7. The method for optimizing the dynamic performance of a primary / secondary fusion column mounted circuit breaker according to claim 6, characterized in that: After performing weighted calculation of the coefficient of variation on the breaking capacity index, the insulation performance index, and the mechanical performance index to obtain the dynamic performance index, the method further includes: Acquire a historical operation record of the circuit breaker, wherein the historical operation record includes a first maintenance inspection record; Analyze the first maintenance inspection record to obtain a first performance loss coefficient, and add the first performance loss coefficient to obtain a historical loss coefficient; Obtaining historical operating time according to the historical operating record, and obtaining a performance correction factor in conjunction with the historical loss coefficient; The dynamic performance index is corrected and adjusted based on the performance correction factor.

8. The method for optimizing the dynamic performance of a primary / secondary fusion column mounted circuit breaker according to claim 6, wherein: Based on the dynamic performance index, a predetermined optimization strategy is called to optimize the control of the primary and secondary fusion columns of the circuit breaker, including: When the dynamic performance index does not meet the predetermined index limit, determining whether the breaking capacity index reaches a first index limit; If the requirement is not met, the dual-tower heat dissipation solution in the predetermined optimization strategy is used to control the heat dissipation of the circuit breaker, wherein the dual-tower heat dissipation solution includes placing a semiconductor cooling plate close to a radiator to pre-cool the circuit breaker and drilling holes in the connecting copper busbar to concentrate the cooling effect of the circuit breaker; If so, determining whether the insulation performance index reaches a second index limit includes: If the requirement is not met, the pole insulation solution in the predetermined optimization strategy is retrieved to perform pole insulation packaging on the circuit breaker, wherein the pole insulation solution is to cast the arc extinguishing chamber, the conductive rod and the integrated sensor of the circuit breaker into one body with epoxy resin; If so, determining whether the mechanical property index reaches the third index limit includes: If the requirement is not met, the oil buffer solution in the predetermined optimization strategy is used to perform shock absorption control on the circuit breaker, wherein the oil buffer solution refers to using an oil pressure buffer instead of a rubber pad to control opening and closing of the circuit breaker; If the condition is met, the dual improvement scheme in the predetermined optimization strategy is called to perform performance improvement control on the circuit breaker.

9. The dynamic performance optimization control method for a primary / secondary fusion column mounted circuit breaker according to claim 8, characterized in that: The dual-boost solution includes a first boost solution and a second boost solution. The first boost solution refers to increasing the control voltage of the circuit breaker, and the second boost solution refers to replacing a press-fit IGBT chip with a solder-type IGBT chip.

10. Dynamic performance optimization control system for primary and secondary fusion column mounted circuit breaker, characterized in that: The system comprises: A real-time sensing and monitoring module is used to activate the integrated sensor to monitor the circuit breaker in real time and obtain sensing and monitoring information; A performance evaluation and analysis module is used to evaluate and analyze the perception monitoring information according to a performance evaluation mechanism to obtain a dynamic performance index; An optimization control module is used to call a predetermined optimization strategy based on the dynamic performance index to optimize the control of the primary and secondary fusion columns of the circuit breaker.

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