External capacitor electricity-taking primary and secondary fusion circuit breaker

Abstract

The invention belongs to the technical field of equipment design, and particularly discloses an external capacitor electricity taking primary and secondary fusion circuit breaker which comprises a circuit breaker shell and an electricity taking management system. The electricity taking operation management system is composed of an equipment application data import module, an equipment application reference confirmation module, a capacitor electricity taking design module, an information base and a capacitor management feedback terminal. When the external capacitor electricity-taking primary and secondary fusion circuit breaker is arranged, the electricity-taking management system is arranged, so that the problem of insufficient details at present is effectively solved, the energy utilization rate of capacitor electricity-taking is further guaranteed, meanwhile, the effectiveness and the stability of subsequent work are also ensured, the feasibility and the reliability of the circuit breaker industry are greatly improved, and the practicability is high. And meanwhile, capacitor electricity taking design suitability analysis is carried out according to the reference circuit parameters, and capacitor electricity taking change setting information and the proper charging and discharging rate of the capacitor are confirmed when the analysis result is that the capacitor electricity taking design suitability is not matched, so that targeted design optimization of the capacitor is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of equipment design, and in particular relates to a primary-secondary fusion circuit breaker with external capacitor power supply. Background Art

[0002] The external capacitor-powered primary and secondary integrated circuit breaker is an intelligent circuit breaker that combines the functions of primary and secondary devices. Its main feature is that it obtains the required power from the power line through an external capacitor to power the electronic control and protection system in the circuit breaker.

[0003] Prior art, such as the Chinese invention patent application with application publication number CN114724885A, discloses a sealed pole with built-in current and voltage sensors and power-taking capacitors, which is provided by setting a tubular high-voltage capacitor on the incoming line side for phase sequence voltage measurement, and setting a current sensor and two tubular high-voltage capacitors on the outgoing side. The current sensor is used for phase sequence and zero sequence current measurement, and the two tubular high-voltage capacitors are used for phase sequence voltage and zero sequence voltage measurement respectively. Two disc-shaped high-voltage capacitors are provided at the bottom of the sealed pole, which are respectively connected to the incoming line and the outgoing line, and are used for power taking on the incoming line side and the outgoing line side respectively. The sealed pole of the present invention realizes double-sided measurement and power taking, has a compact internal structure, high integration, and can provide high-power power output.

[0004] Another example of the prior art is a Chinese invention patent application with application publication number CN115274349A, which discloses a complete set of pole-mounted magnetically controlled circuit breakers with deep fusion of primary and secondary circuits, including an automation terminal device and a circuit breaker housing installed on a pole tower, wherein the circuit breaker housing is provided with three sealed poles, a synchronous shaft assembly and three magnetic control mechanisms connected to the synchronous shaft assembly are arranged inside the circuit breaker housing, the lower ends of the three sealed poles are respectively fixed in the three magnetic control mechanisms, and a separation and combination indicating device connected to the synchronous shaft assembly is arranged at the outer end of the circuit breaker housing, the automation terminal device is provided with a built-in magnetic controller, the magnetic controller is electrically connected to the three magnetic control mechanisms, a power-taking capacitor is sealed in the sealed pole, the power-taking capacitor is connected to the automation terminal device with electric wires, and then the output power of the power-taking capacitor can directly power the low-power automation terminal device, thereby avoiding the installation difficulty of installing a voltage transformer.

[0005] Regarding the above two technical solutions, it is obvious that the current design of the primary and secondary integrated circuit breaker with external capacitor power supply is mainly focused on the design of accessories and installation design, and is not focused on the specific work flow of the circuit breaker. There are still the following deficiencies: 1. Insufficient details: The energy utilization rate cannot be guaranteed, the effectiveness of subsequent work cannot be guaranteed, and the feasibility and reliability of circuit breaker operation in extreme situations or unexpected failures cannot be guaranteed.

[0006] 2. Insufficient design rationality: The circuit status is not predicted based on the specific application circuit type, so as to optimize the design. It is impossible to ensure the safety of subsequent circuits and the robustness of circuit breaker operation, and it is also impossible to further reduce the risk of damage. Summary of the invention

[0007] In view of this, in order to solve the problems raised in the above background technology, a primary and secondary fusion circuit breaker with external capacitor power supply is proposed.

[0008] The objective of the present invention can be achieved through the following technical scheme: The present invention provides a primary and secondary fusion circuit breaker with external capacitor power supply, comprising: a circuit breaker housing and a power supply management system, three sealed poles are arranged outside the circuit breaker housing, and an operating mechanism and a separation and closing position indicator are also arranged under the circuit breaker housing.

[0009] The power-taking operation management system is composed of an equipment application data import module, an equipment application reference confirmation module, a capacitor power-taking design module, an information base and a capacitor management feedback terminal.

[0010] The device application data import module is used to import the expected application circuit type and initial configuration data of the circuit breaker.

[0011] The device application reference confirmation module is used to extract circuit tracking data of the expected application circuit type from the information library and predict reference circuit parameters.

[0012] The capacitor power supply design module is used to perform capacitor power supply design adaptability analysis based on reference circuit parameters. When the adaptability analysis result is incompatible, the capacitor power supply change setting information is confirmed, and the appropriate charge and discharge rate of the capacitor is confirmed.

[0013] The information library is used to store the tracking electrical data set of each application circuit type, and store the volume of each configured capacitor model corresponding to each configured capacitance capacity.

[0014] The capacitor management feedback terminal is used to feed back the capacitor power supply change setting information and the capacitor suitable charge and discharge rate to the circuit breaker design management personnel.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) When setting up an external capacitor power supply primary and secondary fusion circuit breaker, the present invention effectively solves the current problem of insufficient details by setting up a power supply management system, thereby further ensuring the energy utilization rate of capacitor power supply, while also ensuring the effectiveness of subsequent work, and can effectively prevent extreme situations or unexpected failures. The circuit breaker can operate stably, accurately and sensitively, greatly improving the feasibility and reliability of the circuit breaker industry.

[0016] (2) The present invention predicts reference circuit parameters by combining the expected application circuit type and initial configuration data of the circuit breaker, fully considering the specific application circuit and configuration information of the circuit breaker, and realizing detailed prediction of the circuit state, providing a reliable reference basis for the customized configuration of the circuit breaker capacitor, and further allowing the configuration of the circuit breaker to be flexibly adjusted to meet a variety of usage scenarios.

[0017] (3) The present invention effectively solves the current problem of insufficient stability by performing adaptability analysis of the capacitor power supply design based on reference circuit parameters and confirming the capacitor power supply change setting information and the appropriate charge and discharge rate of the capacitor when the analysis result is incompatible, and realizes targeted design optimization of the capacitor, which is convenient for ensuring the safety of subsequent circuits and the robustness of circuit breaker operation, while also reducing the risk of damage, thereby greatly improving the working performance of the circuit breaker.

[0018] (4) When confirming the capacitor power supply change setting information, the present invention performs change index analysis of the capacity design change and the redundancy design change based on reference circuit parameters such as reference current range and current fluctuation frequency, thereby realizing a refined design of the capacitor capacity and capacitor redundancy, ensuring that the capacitor can still work normally under high-frequency fluctuations, improving the overall reliability of the circuit system, reducing the risk of circuit breaker failure caused by capacitor failure, and also improving the overload protection capability of the circuit system and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. 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.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure of the power supply management system of the present invention.

[0022] Figure 3 This is a front view of the external capacitor power-taking primary and secondary fusion circuit breaker of the present invention.

[0023] Figure 4 It is a side view of the external capacitor power taking primary and secondary fusion circuit breaker of the present invention.

[0024] Figure 5 This is a top view of the external capacitor power supply primary and secondary fusion circuit breaker of the present invention.

[0025] Figure 6 This is a schematic diagram of power extraction operation management of the present invention.

[0026] Reference numerals: 1. pole, 2. circuit breaker housing, 3. operating mechanism, 4. opening and closing position indicator. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 As shown, the present invention provides a primary-secondary fusion circuit breaker with external capacitor power supply, including: a circuit breaker housing 2 and a power supply management system.

[0029] See also Figure 3 , Figure 4 and Figure 5 As shown, three sealed poles 1 are arranged outside the circuit breaker housing 2, and an operating mechanism 3 and an opening and closing position indicator 4 are also arranged under the circuit breaker housing 2.

[0030] See also Figure 2 As shown, the power extraction operation management system consists of an equipment application data import module, an equipment application reference confirmation module, a capacitor power extraction design module, an information library and a capacitor management feedback terminal. The specific process of power extraction operation management is as follows: Figure 6 shown.

[0031] In the above, the device application reference confirmation module is respectively connected to the device application data import module, the information library and the capacitor power design module, and the capacitor power design module is also respectively connected to the device application data import module, the information library and the capacitor management feedback terminal.

[0032] The device application data import module is used to import the expected application circuit type and initial configuration data of the circuit breaker.

[0033] Specifically, the expected application circuit types include outdoor, indoor and other types.

[0034] In another specific embodiment, the initial configuration data includes the configuration connection circuit current level, the carrying circuit current, the initial configuration capacitor number, the maximum allowed configuration capacitor number, the initial configuration capacitance, the configuration capacitor placement space volume, the configuration capacitor model and the initial capacitance charge and discharge rate, etc.

[0035] It should be added that the expected application circuit type and initial configuration data are extracted from the technical specification of the external capacitor power supply primary and secondary fusion circuit breaker, and the technical specification is provided by the manufacturer.

[0036] The device application reference confirmation module is used to extract circuit tracking data of the expected application circuit type from the information library and predict reference circuit parameters.

[0037] Specifically, predicting reference circuit parameters includes: S1, extracting the current level of each tracking circuit from the circuit tracking data of the expected application circuit type.

[0038] S2. Extract the current level of the configuration connection circuit from the initial configuration data, and use the tracking circuits whose current levels are consistent with the current level of the configuration connection circuit as reference circuits.

[0039] S3. Select the tracking days that need to be analyzed and record them as the tracking days of each target.

[0040] S4. Extracting the measured current value corresponding to each tracking time point on each target tracking day from the circuit tracking data.

[0041] S5. Using the tracking time point as the horizontal coordinate and the measured current value as the vertical coordinate, construct a measured current change curve of each tracking circuit on each target tracking day.

[0042] S6. Extract the number of fluctuation points from the measured current change curve, and compare the start tracking time point with the end tracking time point to obtain the total tracking time.

[0043] S7. Calculate the ratio of the number of fluctuation points to the total tracking time as the fluctuation frequency, select the maximum fluctuation frequency of each tracking circuit from the fluctuation frequencies of each tracking circuit on each target tracking day, and then calculate the average of the corresponding maximum fluctuation frequencies of each tracking circuit as the current fluctuation frequency.

[0044] S8. Extract the interval tracking duration between each fluctuation point from the measured current variation curve to confirm the current fluctuation period.

[0045] S9. Filter out the maximum and minimum values ​​from the measured current values ​​at each tracking time point to form a measured current interval. Mark the measured current interval of each tracking circuit on each target tracking day on the number axis to obtain each marked interval. The lower limit value of the first marked interval and the upper limit value of the last marked interval form a reference current interval. The current fluctuation frequency, current fluctuation period and reference current interval are used as reference circuit parameters.

[0046] What needs to be added about step S3 is that the selection of the tracking day to be analyzed is mainly based on the comprehensive confirmation of the expected application circuit type of the primary and secondary fusion circuit breaker for external capacitor power supply. For example, when the expected application circuit type of the primary and secondary fusion circuit breaker for external capacitor power supply is outdoor, it is a changeable environment, and it is necessary to select a date with a slightly longer period as the tracking period to be analyzed; when the expected application circuit type of the primary and secondary fusion circuit breaker for external capacitor power supply is indoor, the environment is relatively stable and tends to be fixed, and then a date with a slightly shorter period can be selected as the tracking period to be analyzed.

[0047] In a specific embodiment, for the convenience of analysis, when the expected application circuit type of the primary and secondary fusion circuit breaker for external capacitor power supply is outdoor, the current date is taken as the deadline, and each tracking day with an interval period of one year from the current date is taken as the tracking day that needs to be analyzed; when the expected application circuit type of the primary and secondary fusion circuit breaker for external capacitor power supply is indoor, the current date is taken as the deadline, and each tracking day with an interval period of three months from the current date is taken as the tracking day that needs to be analyzed.

[0048] Regarding the confirmation of the current fluctuation period in step S8, it includes: S8-1, calculating the standard deviation of the interval tracking time between each fluctuation point, and taking the calculation result as the fluctuation difference, recorded as .

[0049] S8-2, if , taking 0 as the fluctuation correction factor, To set the reference fluctuation difference, otherwise As the fluctuation correction factor, it is recorded as , and the fluctuation correction factor is obtained , The value is 0 or .

[0050] It should be added that, in a specific embodiment, when the reference fluctuation difference is mainly set according to the operation requirements of the specific circuit and the industry standard or recommended value of the specific application, illustratively, the circuit is used for precision measurement or control system, and a smaller standard deviation reference value can be selected, such as a fluctuation cycle mean value of less than 2%. If the circuit is used for general industrial applications, a larger standard deviation reference value can be selected, such as a fluctuation cycle mean value of 5% to 10%. Assuming that the external capacitor power supply primary and secondary fusion circuit breaker is used for precision measurement or control system, The specific value can be 0.6 seconds. The external capacitor power supply primary and secondary fusion circuit breaker is used for general industrial applications. The specific value range is 1.5 seconds to 3.0 seconds, and the specific value can be 2 seconds.

[0051] S8-3. Calculate the average value of the interval tracking time between each fluctuation point to obtain the average interval tracking time , and then calculate the fluctuation period , .

[0052] S8-4. Based on the fluctuation period, the current fluctuation period is confirmed in the same manner as the current fluctuation frequency.

[0053] The embodiment of the present invention combines the expected application circuit type and initial configuration data of the circuit breaker to predict the reference circuit parameters, fully considers the specific application circuit and configuration information of the circuit breaker, realizes the detailed prediction of the circuit state, and provides a reliable reference basis for the customized configuration of the circuit breaker capacitor, thereby flexibly adjusting the configuration of the circuit breaker to meet various usage scenarios.

[0054] The capacitor power supply design module is used to perform capacitor power supply design adaptability analysis based on reference circuit parameters. When the adaptability analysis result is incompatible, the capacitor power supply change setting information is confirmed, and the appropriate charge and discharge rate of the capacitor is confirmed.

[0055] Specifically, the adaptability analysis of the capacitor power supply design is carried out, including: extracting the reference current interval from the reference circuit parameters, calculating the difference between the upper limit value and the lower limit value corresponding to the reference current interval, and taking the difference as the current fluctuation amplitude, and recording it as .

[0056] Extract the load circuit current from the initial configuration data, and record the upper limit of the load circuit current and the reference current interval as and .

[0057] The current fluctuation frequency and current fluctuation period are extracted from the reference circuit parameters and recorded as and .

[0058] Calculate the conformity of capacitor power design , , , and The reference interference current fluctuation amplitude, interference current fluctuation frequency and interference current fluctuation period are set respectively.

[0059] like , take adaptation as the result of the adaptability analysis, otherwise, take incompatibility as the result of the adaptability analysis.

[0060] It should be added that , and The specific value of can be extracted from the technical specification of the corresponding capacitor described in the present invention, wherein the planned specification is provided by the manufacturer of the corresponding capacitor described in the present invention.

[0061] Further, confirm the capacitor power supply change setting information, including: D1, based on the reference current range, current fluctuation frequency and current fluctuation period, confirm the change design type, wherein the change type includes capacity design change and redundancy design change.

[0062] D2. When the design change type is a redundant design change, the number of initial configuration capacitors and the maximum number of permitted configuration capacitors are extracted from the initial configuration data and recorded as and , calculate the number of redundant capacitors, recorded as , , Indicates the round-up symbol. represents a natural constant, To set the reference capacitor compensation factor.

[0063] D3. When the design change type is a capacity design change, the initial configuration capacitance is extracted from the initial configuration data and recorded as , confirm the change in capacitance, recorded as ,Will As a change indicator for capacity design changes.

[0064] D4. When the design change type is a capacity design change and a redundancy design change, confirm the change index, and then use the design change type and the change index under the design change type as the capacitor power supply change setting information.

[0065] Regarding the confirmation of the design change type in step D1, it includes: D11, using the reference current interval as the change trend parameter A, As the evaluation index value of the change trend parameter A, it is recorded as .

[0066] D12, taking the current fluctuation frequency as the change trend parameter B, As the evaluation index value of the change trend parameter B, it is recorded as .

[0067] D13, taking the current fluctuation period as the change trend parameter C, As the evaluation index value of the change trend parameter C, it is recorded as .

[0068] D14. Traverse the evaluation index values ​​of the change trend parameter A, the change trend parameter B, and the change trend parameter C, and record the change trend parameter with an evaluation index value greater than 0 as a guiding parameter.

[0069] D15. Count the number of guidance parameters. If the number of guidance parameters is greater than 1, the capacity design change and redundancy design change are regarded as the change types.

[0070] D16. When the number of guiding parameters is 1 and it is the change trend parameter A, the capacity design change is taken as the change type. If it is the change trend parameter B, the redundancy design change is taken as the change type. If it is the change trend parameter C, the capacity design change and the redundancy design change are taken as the change types.

[0071] It should be added that the reference current range determines the energy range that the capacitor needs to store. A larger reference current range means that the capacitor needs to store more energy to cope with current changes. At the same time, the reference current range may require increasing the redundancy of the capacitor to ensure that the capacitor can work normally even under extreme current fluctuations. However, in terms of redundant design, the impact of the reference current range is relatively small. Therefore, the reference current range mainly affects the capacitor capacity design, that is, the reference current range is selected as the direct influencing change trend parameter of the capacity design change, and then when the reference current range is used as the guiding parameter, the change type is confirmed to be a capacity design change.

[0072] It should be added that the current fluctuation frequency refers to the number of current fluctuations per unit time. High-frequency current fluctuations mean that the capacitor needs to be charged and discharged more frequently, increasing the loss and thermal stress of the capacitor. Obviously, the current fluctuation frequency affects the charging and discharging rate and service life of the capacitor more, that is, the redundancy of the capacitor needs to be increased to ensure the reliability of the system. The capacitor capacity design mainly considers how much energy the capacitor needs to store to cope with changes in the reference current range. Therefore, the current fluctuation frequency mainly affects the capacitor redundancy design, that is, the current fluctuation frequency is selected as the direct influence change trend parameter of the redundant design change, and then when the current fluctuation frequency is used as the guiding parameter, the change type is confirmed to be a capacity design change.

[0073] It should also be added that the current fluctuation cycle refers to the time interval between two adjacent current fluctuations. A shorter current fluctuation cycle means that the capacitor needs to complete charging and discharging in a short time. In this case, it may be necessary to increase the capacitance to ensure that the capacitor can complete the charging and discharging process in a short time. Therefore, the current fluctuation cycle has a certain impact on the capacitor capacity design. At the same time, a shorter current fluctuation cycle may increase the loss of the capacitor, and the redundancy of the capacitor needs to be increased to ensure the reliability of the system. Therefore, the current fluctuation cycle also has a certain impact on the capacitor redundancy design. Foreseeably, the current fluctuation cycle mainly affects the charging and discharging rate of the capacitor and the service life of the capacitor, which has a certain impact on the capacitor capacity design and the capacitor redundancy design. Therefore, the current fluctuation cycle affects both the capacitor redundancy design and the capacitor capacity design. When the current fluctuation cycle is used as the guiding parameter, the change type is confirmed to be a capacity design change and a redundancy design change.

[0074] As can be understood from step D2, is the capacitor compensation factor, which is set according to the Sigmoid function. The specific value of is determined by referring to the value range of the capacitor compensation factor. When the design change type is a redundant design change, ,at this time The value range is (0.5, 1), that is The value is greater than 0.5, and in order to ensure the rationality and effectiveness of the number of capacitors configured, specifically, The value range of is (0.8, 1]. For example, for the convenience of analysis, The specific value can be 0.8.

[0075] It should be added that a high current fluctuation frequency means that the capacitor needs to be charged and discharged more frequently, increasing the loss and thermal stress of the capacitor. Therefore, the design consideration is mainly to increase the capacitor capacity to ensure that there is enough energy reserve even under high-frequency fluctuations. That is, the more the current fluctuation frequency exceeds expectations, the greater the need to change the capacitor capacity. The short current fluctuation period means that the capacitor needs to be charged and discharged in a short time, which increases the charging rate requirements of the capacitor. Therefore, the design consideration requires the capacitor to consider the charging and discharging characteristics of the capacitor to ensure that the capacitor can be charged and discharged in a short period of time. A large current range means that the capacitor needs to store more energy to cope with large current changes. The design consideration needs to calculate the required capacitor capacity based on the size of the reference current range to ensure that the capacitor can store enough energy. Therefore, the current fluctuation frequency, current fluctuation period and reference current range are selected as reference circuit parameters, and the adaptability analysis of the capacitor power supply design is carried out accordingly.

[0076] It should also be added that the current fluctuation frequency, current fluctuation period and reference current range are all important indicators that directly affect the capacitor power design. Therefore, when an important indicator exceeds the interference value or load value of the circuit breaker, it means that the adaptability of the capacitor power design is not high. Therefore, the maximum value function is selected as the capacitor power design fit calculation function, so as to achieve accurate analysis and judgment of whether the capacitor power design is adaptable or not.

[0077] Regarding the confirmation of the change of capacitor capacity in step D3, it includes: D31, extracting the volume of the configuration capacitor placement space and the configuration capacitor model from the initial configuration data, and extracting the volume of each configuration capacitor capacity corresponding to the configuration capacitor model from the information library.

[0078] D32. Compare the product of the volume of each configured capacitor capacity and the number of initially configured capacitors with the volume of the configured capacitor placement space to obtain the space occupancy ratio of each configured capacitor capacity.

[0079] D33. If the space occupancy ratio of a certain configuration capacitor capacity is less than 1, the configuration capacitor capacity is recorded as the alternative capacity, and the alternative capacity with the highest space occupancy ratio is used as the upper limit capacity, and recorded as .

[0080] D34, will and The difference is taken as the capacity increment , set the reference to change the capacitor capacity .

[0081] D35. If the difference between the reference changed capacitance and a certain alternative capacitance is less than 0, and the absolute value of the difference is the smallest, the alternative capacitance is used as the confirmed changed capacitance. .

[0082] Wherein, setting the reference change capacitance comprises: step 1, As the capacitance associated variable 1, denoted as .

[0083] Step 2: As the capacitance associated variable 2, denoted as .

[0084] Step 3: Calculate the reference change capacitor capacity , , Represents and proposition symbol.

[0085] It should be added that It represents the capacitance change trend factor at the current fluctuation amplitude level, and its value range is (0, 1). The capacitance change trend factor at the current value level is expressed. Can be disassembled into , which means in and When the sum of is greater than or equal to 1, 1 is used as the capacitance change trend factor, otherwise the sum of the two is used as the capacitance change trend factor, the purpose is to ensure that the final increase in capacity does not exceed the capacity increment, and the capacitance change trend factor is mainly set with reference to the deformation of the exponential function, the purpose is that when the variable is greater than 0, the calculation result can increase accordingly with the increase of the variable value, and the final value range can be mapped between 0 and 1, so as to ensure the reliability of the capacitance change calculation.

[0086] Regarding the confirmation change indicator described in step D4, it includes: D41, when the guiding parameter is the change trend parameter C, As the number of redundant configuration capacitors is increased, it is recorded as ,Will Use this as a reference to change the capacitance.

[0087] D42, according to The confirmation method is similar to the confirmation method. The guiding parameter is the change capacitance of the change trend parameter C. ,Will and As an indicator of change.

[0088] D43. When the guidance parameters are change trend parameter A and change trend parameter B, and As an indicator of change.

[0089] D44. When the guidance parameters are change trend parameter A and change trend parameter C, As the number of redundant configuration capacitors is increased, it is recorded as ,Will and As an indicator of change.

[0090] D45. When the guidance parameters are change trend parameter B and change trend parameter C, As the change in capacitance, record it as ,Will and As an indicator of change.

[0091] D46. When the guidance parameters are change trend parameter A, change trend parameter B and change trend parameter C, and As an indicator of change.

[0092] When confirming the capacitor power supply change setting information, the embodiment of the present invention performs change index analysis of capacity design change and redundancy design change based on reference circuit parameters such as reference current range and current fluctuation frequency, thereby achieving a refined design of capacitor capacity and capacitor redundancy, ensuring that the capacitor can still work normally under high-frequency fluctuations, improving the overall reliability of the circuit system, reducing the risk of circuit breaker failure caused by capacitor failure, and also improving the overload protection capability of the circuit system and reducing safety hazards.

[0093] Furthermore, determining the appropriate charge and discharge rate of the capacitor includes: extracting the initial capacitor charge and discharge rate from the initial configuration data, recorded as .

[0094] Set the capacitor charge and discharge rate change trend factor , , and then As the appropriate charge and discharge rate of the capacitor, it is recorded as .

[0095] It should be added that the capacitance charge and discharge rate change trend factor is set by referring to the combination of Sigmoid function and ReLU function. The factor that indicates the change trend of the capacitance charge and discharge rate at the current fluctuation period level, The capacitance charge and discharge rate change trend factor at the current fluctuation frequency level is expressed as the capacitance charge and discharge rate change trend factor, and the sum of the two is subtracted Because when When , minus the interference of the critical value on the setting and adjustment of the capacitor charge and discharge rate, when At this time Similarly, in order not to affect the overall setting of the suitable charge and discharge rate of the capacitor, when The capacitor charge and discharge rate change trend factor at the current fluctuation period level is assigned a value of 0, wherein the setting principle of the capacitor charge and discharge rate change trend factor at the current fluctuation frequency level is the same as that of the capacitor charge and discharge rate change trend factor at the current fluctuation period level, and will not be described again here.

[0096] It should also be added that a high current fluctuation frequency means that the capacitor needs to be charged and discharged more frequently, which directly affects the charging and discharging rate of the capacitor. At the same time, a shorter current fluctuation period means that the capacitor needs to complete the charging and discharging process in a short time, which may require the capacitor to have a higher charging and discharging rate. Therefore, the current fluctuation frequency and the current fluctuation period are both the main factors affecting the charging and discharging rate of the capacitor.

[0097] The embodiment of the present invention effectively solves the current problem of insufficient stability by performing adaptability analysis of the capacitor power supply design based on reference circuit parameters, and confirming the capacitor power supply change setting information and the appropriate charge and discharge rate of the capacitor when the analysis result is incompatible, and realizes targeted design optimization of the capacitor, which is convenient for ensuring the safety of subsequent circuits and the robustness of the circuit breaker operation, while also reducing the risk of damage, thereby greatly improving the working performance of the circuit breaker.

[0098] The information library is used to store the tracking electrical data set of each application circuit type, and store the volume of each configured capacitor model corresponding to each configured capacitance capacity.

[0099] The capacitor management feedback terminal is used to feed back the capacitor power supply change setting information and the capacitor suitable charge and discharge rate to the circuit breaker design management personnel.

[0100] When setting up an external capacitor power-drawing primary and secondary fusion circuit breaker, the embodiment of the present invention effectively solves the current problem of insufficient details by setting up a power-drawing management system, thereby further ensuring the energy utilization rate of capacitor power-drawing, while also ensuring the effectiveness of subsequent work, and can effectively prevent extreme situations or unexpected failures. The circuit breaker can operate stably, accurately and sensitively, greatly improving the feasibility and reliability of the circuit breaker industry.

[0101] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A primary and secondary fusion circuit breaker with external capacitor power supply, characterized in that: include: A circuit breaker housing (2) and a power supply management system, wherein three sealed poles (1) are arranged outside the circuit breaker housing (2), and an operating mechanism (3) and an opening and closing position indicator (4) are also arranged below the circuit breaker housing (2); The power extraction operation management system is composed of an equipment application data import module, an equipment application reference confirmation module, a capacitor power extraction design module, an information library and a capacitor management feedback terminal; The device application data import module is used to import the expected application circuit type and initial configuration data of the circuit breaker; The device application reference confirmation module is used to extract the circuit tracking data of the expected application circuit type from the information library and predict the reference circuit parameters; The capacitor power design module is used to perform a capacitor power design adaptability analysis based on reference circuit parameters. When the adaptability analysis result is unsuitable, the capacitor power change setting information is confirmed, and the appropriate charge and discharge rate of the capacitor is confirmed; The information library is used to store the tracking electrical data set of each application circuit type, and store the volume of each configured capacitor model corresponding to each configured capacitance capacity; The capacitor management feedback terminal is used to feed back the capacitor power supply change setting information and the capacitor suitable charge and discharge rate to the circuit breaker design management personnel.

2. According to claim 1, a primary and secondary fusion circuit breaker with external capacitor power supply, characterized in that: The predicted reference circuit parameters include: extracting the current level of each tracking circuit from the circuit tracking data of the expected application circuit type; Extracting the current level of the configuration connection circuit from the initial configuration data, and using each tracking circuit whose current level is consistent with the current level of the configuration connection circuit as each reference circuit; Select the tracking days that need to be analyzed and record them as the tracking days for each target; Extracting the measured current value corresponding to each tracking time point on each target tracking day from the circuit tracking data; With the tracking time point as the horizontal axis and the measured current value as the vertical axis, a measured current change curve of each tracking circuit on each target tracking day is constructed; Extracting the number of fluctuation points from the measured current change curve, and comparing the start tracking time point with the end tracking time point to obtain the total tracking time; The ratio of the number of fluctuation points to the total tracking time is calculated as the fluctuation frequency. The maximum fluctuation frequency of each tracking circuit is selected from the fluctuation frequencies of each tracking circuit on each target tracking day. Then, the average of the corresponding maximum fluctuation frequencies of each tracking circuit is calculated and used as the current fluctuation frequency. Extracting the interval tracking time between each fluctuation point from the measured current change curve to confirm the current fluctuation period; The maximum and minimum values ​​are screened out from the measured current values ​​at each tracking time point to form a measured current interval. The measured current interval of each tracking circuit on each target tracking day is marked on the number axis to obtain each marked interval. The lower limit value of the first marked interval and the upper limit value of the last marked interval form a reference current interval. The current fluctuation frequency, current fluctuation period and reference current interval are used as reference circuit parameters.

3. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 2 is characterized in that: The step of confirming the current fluctuation period includes: The standard deviation of the interval tracking time between each fluctuation point is calculated, and the calculation result is used as the fluctuation difference, recorded as ; like , taking 0 as the fluctuation correction factor, To set the reference fluctuation difference, otherwise As the fluctuation correction factor, it is recorded as , and the fluctuation correction factor is obtained , The value is 0 or ; Calculate the average interval tracking time between each fluctuation point to get the average interval tracking time , and then calculate the fluctuation period , ; Based on the fluctuation period, the current fluctuation period is determined in the same way as the current fluctuation frequency.

4. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 2 is characterized in that: The adaptability analysis of the capacitor power supply design includes: Extract the reference current interval from the reference circuit parameters, calculate the difference between the upper limit and the lower limit of the reference current interval, and use the difference as the current fluctuation amplitude, which is recorded as ; Extract the load circuit current from the initial configuration data, and record the upper limit of the load circuit current and the reference current interval as and ; The current fluctuation frequency and current fluctuation period are extracted from the reference circuit parameters and recorded as and ; Calculate the conformity of capacitor power design , , , and The reference interference current fluctuation amplitude, interference current fluctuation frequency and interference current fluctuation period are set respectively; like , take adaptation as the result of the adaptability analysis, otherwise, take incompatibility as the result of the adaptability analysis.

5. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 4 is characterized in that: The confirmation of the capacitor power supply change setting information includes: Based on the reference current range, the current fluctuation frequency and the current fluctuation period, confirm the design change type, wherein the change type includes capacity design change and redundancy design change; When the design change type is a redundant design change, the initial configuration capacitor number and the maximum allowed configuration capacitor number are extracted from the initial configuration data and are recorded as and , calculate the number of redundant capacitors, recorded as , , Indicates the round-up symbol. represents a natural constant, To set the reference capacitor compensation factor; When the design change type is a capacity design change, the initial configuration capacitance is extracted from the initial configuration data and recorded as , confirm the change in capacitance, recorded as ,Will As a change indicator for capacity design changes; When the design change type is a capacity design change and a redundancy design change, the change index is confirmed, and then the design change type and the change index under the design change type are used as capacitor power supply change setting information.

6. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 5 is characterized in that: The types of design changes to be confirmed include: The reference current interval is used as the change trend parameter A. As the evaluation index value of the change trend parameter A, it is recorded as ; The current fluctuation frequency is taken as the change trend parameter B. As the evaluation index value of the change trend parameter B, it is recorded as ; The current fluctuation period is taken as the change trend parameter C. As the evaluation index value of the change trend parameter C, it is recorded as ; Traverse the evaluation index values ​​of the change trend parameter A, the change trend parameter B, and the change trend parameter C, and record the change trend parameter with an evaluation index value greater than 0 as a guiding parameter; Count the number of guiding parameters. If the number of guiding parameters is greater than 1, consider the capacity design change and redundancy design change as the change type. When the number of guiding parameters is 1 and the change trend parameter is A, the capacity design change is taken as the change type. If it is the change trend parameter B, the redundancy design change is taken as the change type. If it is the change trend parameter C, the capacity design change and the redundancy design change are taken as the change types.

7. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 5 is characterized in that: The step of confirming the change in capacitance includes: Extracting the configuration capacitor placement space volume and the configuration capacitor model from the initial configuration data, and extracting the volume of each configuration capacitor capacity corresponding to the configuration capacitor model from the information library; The product of the volume of each configured capacitor capacity and the number of the initial configured capacitors is compared with the volume of the configured capacitor placement space to obtain the space occupancy ratio of each configured capacitor capacity; If the space occupancy ratio of a certain configuration capacitor capacity is less than 1, the configuration capacitor capacity is recorded as an alternative capacity, and the alternative capacity with the highest space occupancy ratio is used as the upper limit capacity setting ; Will and The difference is taken as the capacity increment , set the reference to change the capacitor capacity ; If the difference between the reference change capacitance and a certain alternative capacitance is less than 0, and the absolute value of the difference is the smallest, the alternative capacitance is used as the confirmed change capacitance. .

8. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 6 is characterized in that: The confirmation change indicators include: When the guidance parameter is the change trend parameter C, As the number of redundant configuration capacitors is increased, it is recorded as ,Will As a reference, change the capacitance; according to The confirmation method is similar to the confirmation method. The guiding parameter is the change capacitance of the change trend parameter C. ,Will and as an indicator of change; When the guidance parameters are change trend parameter A and change trend parameter B, and as an indicator of change; When the guidance parameters are change trend parameter A and change trend parameter C, As the number of redundant configuration capacitors is increased, it is recorded as ,Will and as an indicator of change; When the guidance parameters are change trend parameter B and change trend parameter C, As the change in capacitance, denoted as ,Will and as an indicator of change; When the guidance parameters are change trend parameter A, change trend parameter B and change trend parameter C, and As an indicator of change.

9. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 7 is characterized in that: The setting reference changes the capacitance, including: Will As the capacitance associated variable 1, denoted as ; Will As the capacitance associated variable 2, denoted as ; Calculate the capacitance according to the reference , , Represents and proposition symbol.

10. The primary and secondary fusion circuit breaker with external capacitor power supply according to claim 4, characterized in that: The determination of the suitable charge and discharge rate of the capacitor includes: The initial capacitance charge and discharge rate is extracted from the initial configuration data and is recorded as ; Set the capacitor charge and discharge rate change trend factor , , and then As the appropriate charge and discharge rate of the capacitor, it is recorded as .

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