Method for adjusting protection parameters of intelligent miniature circuit breaker adaptable to multiple scenarios and intelligent miniature circuit breaker

Abstract

The present application relates to a method for adjusting protection parameters of an intelligent micro circuit breaker adaptable to multiple scenarios and an intelligent micro circuit breaker. The method includes: obtaining the real-time voltage, real-time current, and real-time current harmonics of a line, and determining the type of electrical load, electricity consumption period, electricity consumption duration, and electricity consumption amount according to the real-time voltage, real-time current, and real-time current harmonics; obtaining the geographical location of the line, and determining the electricity consumption scenario according to the geographical location, type of electrical load, electricity consumption period, electricity consumption duration, and electricity consumption amount; setting the protection parameters of the intelligent micro circuit breaker on the line to correspond to the electricity consumption scenario according to the electricity consumption scenario. By using this method, the protection parameters can be adjusted according to different electricity consumption scenarios.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and particularly to a method for adjusting protection parameters of a smart micro circuit breaker adaptable to multiple scenarios and a smart micro circuit breaker. Background Art

[0002] With the development of society, there are more and more functional requirements for micro circuit breakers, and the application scenarios are also emerging in an endless stream. In addition to traditional residential electricity use, they also include photovoltaic, energy storage, charging vehicle charging piles, charging automatic vehicle charging piles, dormitories, etc.

[0003] At present, the protection parameters of traditional micro circuit breakers are fixed at the time of factory and cannot be adjusted on site. Although electronic micro circuit breakers reserve the function of parameter adjustment, it is necessary to manually set the on-site parameters. Moreover, the load type of the micro circuit breaker also changes during actual use, and it cannot respond to the change of the load type in time, resulting in the protection parameters of the micro circuit breaker not being accurately matched, greatly reducing the protection accuracy and power consumption reliability. Summary of the Invention

[0004] Based on this, in view of the above technical problems, it is necessary to provide a method for adjusting protection parameters of a smart micro circuit breaker adaptable to multiple scenarios and a smart micro circuit breaker.

[0005] In a first aspect, the present application provides a method for adjusting protection parameters of a smart micro circuit breaker adaptable to multiple scenarios, including:

[0006] Obtain the real-time voltage, real-time current and real-time current harmonics of the line, and determine the type of electrical load, electricity consumption period, electricity consumption duration and electricity consumption according to the real-time voltage, real-time current and real-time current harmonics;

[0007] Obtain the geographical location of the line, and determine the electricity consumption scenario according to the geographical location, type of electrical load, electricity consumption period, electricity consumption duration and electricity consumption;

[0008] Set the protection parameters of the smart micro circuit breaker on the line corresponding to the electricity consumption scenario according to the electricity consumption scenario.

[0009] In one of the embodiments, determining the type of electrical load, electricity consumption period, electricity consumption duration and electricity consumption according to the real-time voltage, real-time current and real-time current harmonics includes:

[0010] Determine the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power and the real-time power factor according to the real-time voltage and the real-time current;

[0011] Extract the load characteristics according to the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, the real-time power factor and the real-time current harmonics;

[0012] Determine the type of electrical load according to the load characteristics.

[0013] In one embodiment, according to the real-time voltage, real-time current, and real-time current harmonics, determine the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount, including:

[0014] According to the real-time voltage and real-time current, determine the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, and the real-time power factor;

[0015] According to the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, and the real-time power factor, determine the indicated value of the forward active electric energy and the indicated value of the reverse active electric energy;

[0016] Adopt the methods of instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing to record and store the indicated value of the forward active electric energy and the indicated value of the reverse active electric energy, so as to determine the electricity consumption period, the electricity consumption duration, and the electricity consumption amount.

[0017] In a second aspect, the present application also provides a protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker, and the device includes:

[0018] An electrical parameter acquisition module, configured to acquire the real-time voltage, real-time current, and real-time current harmonics of the line, and determine the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount according to the real-time voltage, real-time current, and real-time current harmonics;

[0019] An electricity consumption scenario determination module, configured to acquire the geographical location of the line, and determine the electricity consumption scenario according to the geographical location, the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount;

[0020] A protection parameter adjustment module, configured to set the protection parameters of the intelligent miniature circuit breaker on the line corresponding to the electricity consumption scenario according to the electricity consumption scenario.

[0021] In a third aspect, the present application also provides a controller, including a memory and a processor, where the memory stores a computer program, and when the processor executes the computer program, the steps of the method in the above embodiments are implemented.

[0022] In a fourth aspect, the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method in the above embodiments are implemented.

[0023] In a fifth aspect, the present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps of the method in the above embodiments are implemented.

[0024] In a sixth aspect, the present application further provides an intelligent miniature circuit breaker, including:

[0025] A circuit breaker switch, connected in series to the circuit;

[0026] A control mechanism, connected to the circuit breaker switch, and the control mechanism is used to control the on / off of the circuit breaker switch;

[0027] An electrical parameter acquisition device, used to acquire the real-time voltage and real-time current of the circuit;

[0028] A controller as in the above-mentioned embodiments, connected to the control mechanism and the electrical parameter acquisition device respectively;

[0029] Wherein, the controller is built-in with a positioning module, and the positioning module is used to obtain the geographical location.

[0030] In one of the embodiments, the intelligent miniature circuit breaker further includes:

[0031] A communication module, connected to the controller, and used for communicating with an external terminal.

[0032] In one of the embodiments, the intelligent miniature circuit breaker further includes:

[0033] An encryption chip, connected to the controller.

[0034] The above-mentioned method for adjusting the protection parameters of the intelligent miniature circuit breaker adaptable to multiple scenarios and the intelligent miniature circuit breaker have at least the following beneficial effects:

[0035] By collecting the voltage and current data of the circuit in real time, as well as the real-time current harmonic data, and using these data to determine the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount, and then combining with the geographical location information of the installation location of the intelligent miniature circuit breaker, the specific electricity consumption scenario is identified; Subsequently, according to the identified different electricity consumption scenarios, the protection parameters of the circuit breaker are automatically adjusted. For example, a higher overload threshold and instantaneous large current protection are set during the daytime office hours in the business district, while the overload protection threshold is reduced and the leakage protection is enhanced at night in the residential area. In addition, specific safety restriction measures are implemented for specific scenarios such as electric bicycle charging or dormitory applications, so as to realize dynamic optimization of the protection configuration according to different electricity consumption scenarios, improve the protection accuracy and electricity consumption reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application or related technologies. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0037] Figure 1 It is an application environment diagram of the protection parameter adjustment method for a multi-scenario adaptive intelligent miniature circuit breaker in an embodiment;

[0038] Figure 2 It is a schematic flowchart of the protection parameter adjustment method for a multi-scenario adaptive intelligent miniature circuit breaker in an embodiment;

[0039] Figure 3 It is a schematic flowchart of the steps for determining the type of electrical load, electricity consumption period, electricity consumption duration, and electricity consumption based on real-time voltage, real-time current, and real-time current harmonics in an embodiment;

[0040] Figure 4 It is a schematic flowchart of the method for determining the type of electrical load, electricity consumption period, electricity consumption duration, and electricity consumption based on real-time voltage, real-time current, and real-time current harmonics in another embodiment;

[0041] Figure 5 It is a schematic flowchart of the protection parameter adjustment method for a multi-scenario adaptive intelligent miniature circuit breaker in another embodiment;

[0042] Figure 6 It is a schematic structural diagram of an intelligent miniature circuit breaker in an embodiment;

[0043] Figure 7 It is a structural block diagram of the protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker in another embodiment;

[0044] Figure 8 It is an internal structural diagram of the controller in an embodiment. Detailed implementation manners

[0045] In order to make the purpose, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0046] The protection parameter adjustment method for a multi-scenario adaptive intelligent miniature circuit breaker provided by the embodiments of the present application can be applied to, for example, Figure 1In the application environment shown. Among them, the line refers to a low-voltage AC transmission line, and the power consumption scenario 102 can refer to a power consumption demand scenario composed of different electrical devices, including ordinary residential household power consumption, street lamp power consumption scenario, dormitory power consumption scenario, electric bicycle charging scenario, energy storage scenario, photovoltaic power generation scenario, and electric vehicle charging pile charging scenario, etc. The above scenarios are only for illustrative purposes, and this application is not limited to the above power consumption scenarios. The intelligent miniature circuit breaker 104 is installed on the branch of the line corresponding to each power consumption scenario. Among them, the controller in the intelligent miniature circuit breaker 104 obtains the real-time voltage, real-time current, and real-time current harmonics of the line, and determines the type of electrical load, power consumption period, power consumption duration, and power consumption according to the real-time voltage, real-time current, and real-time current harmonics; and obtains the geographical location of the line, and determines the power consumption scenario according to the geographical location, type of electrical load, power consumption period, power consumption duration, and power consumption; according to the power consumption scenario, set the protection parameters of the circuit breaker on the line to correspond to the power consumption scenario.

[0047] In an exemplary embodiment, as Figure 2 shown, a method for adjusting the protection parameters of an intelligent miniature circuit breaker adaptable to multiple scenarios is provided. Taking the controller of the intelligent miniature circuit breaker in Figure 1 as an example for illustration, it includes the following steps S202 to step S206. Among them:

[0048] S202, obtain the real-time voltage, real-time current, and real-time current harmonics of the line, and determine the type of electrical load, power consumption period, power consumption duration, and power consumption according to the real-time voltage, real-time current, and real-time current harmonics.

[0049] Among them, as described above, the line refers to a low-voltage AC transmission line (such as 220V, 380V AC transmission lines). The type of electrical load refers to different types of electrical devices or loads connected to the line, such as lighting, air conditioners, motors, etc.; and for power generation scenarios such as photovoltaic power generation, the type of electrical load is mostly devices such as inverters.

[0050] Exemplarily, since the voltage of the circuit is generally stable, the real-time voltage of the circuit can be obtained through presetting. The real-time current of the circuit can be collected by the built-in current transformer in the intelligent miniature circuit breaker at different sampling time nodes, and the corresponding sampling time is recorded. After the controller obtains the real-time current of the circuit and the preset real-time voltage of the circuit from the current transformer, the power consumption period and power consumption duration of the electrical equipment connected to the circuit can be confirmed based on the corresponding sampling time. Further, based on the real-time current and real-time voltage, the corresponding power can be determined. Combining the determined power consumption duration, the power consumption corresponding to the power consumption duration can be determined. Based on the collected real-time voltage and real-time current, by analyzing features such as the power factor and analyzing features such as the current waveform based on the collected real-time current harmonics, the type of electrical load on the current loop can be identified. For example, if it is detected that the current waveform has obvious periodic spikes and the power factor is low, it may be identified as a motor-type load. At the same time, by continuously monitoring the current and voltage, the actual power consumption period, power consumption duration, and power consumption are calculated, and based on this, the specific power consumption scenario is further determined.

[0051] S204. Obtain the geographical location of the circuit, and determine the power consumption scenario according to the geographical location, type of electrical load, power consumption period, power consumption duration, and power consumption.

[0052] Among them, the geographical location can refer to the actual physical location where the intelligent miniature circuit breaker is installed, such as a home, office, factory, etc., which can be represented in the form of longitude and latitude coordinates, and can accurately indicate the actual physical location where the intelligent miniature circuit breaker is located.

[0053] Exemplarily, the geographical location information of the line is obtained through the Beidou positioning module integrated in the controller, and at the same time, combined with the determined power load type, power consumption period, power consumption duration, and power consumption data, to determine the current specific power consumption scenario. Specifically, the climate conditions and electricity price policies of the region can be understood based on the geographical location, and by monitoring the real-time voltage and current, the type of load currently connected can be identified. Then, the power consumption mode can be further refined according to different power consumption periods and durations in a day. Finally, by synthesizing this information, specific power consumption scenarios such as "long-term use of office equipment during the peak daytime power consumption period in the business district at this location" or "using high-power household appliances at night in the residential area" can be inferred. For example, in an office located in a commercial center, through monitoring, it is found that there is continuous high-power power consumption during the daytime working hours (from 9 am to 6 pm). By analyzing the real-time current and voltage data, it is judged that the main load is office equipment such as computers and printers. And since this geographical location belongs to the business district, it is initially determined that this is a typical office power consumption scenario. Further confirmed by the power consumption duration and power consumption amount. For example, for the usual office power consumption environment, the power consumption duration is mostly 8-10 hours, and the power consumption amount is positive (indicating that power is taken from the power grid at this time), while for power consumption scenarios such as photovoltaic power generation, the power consumption amount is negative (indicating that power is transmitted to the power grid at this time). Therefore, the actual power consumption scenario can be further confirmed by combining the power consumption duration and power consumption amount.

[0054] S206. Set the protection parameters of the intelligent miniature circuit breaker on the line to correspond to the power consumption scenario.

[0055] Exemplarily, according to the power consumption scenario, the protection parameters are automatically adjusted. For example, when identifying the high-load office scenario during the daytime in the business district, set the intelligent miniature circuit breaker to have a higher overload threshold to meet the demand for long-term continuous operation, and enhance the instantaneous large-current protection to prevent the impact during equipment startup; while during the low-load period at night in the residential area, lower the overload protection threshold and strengthen the leakage protection function to ensure safety at night. In this way, the protection configuration of the circuit breaker can be dynamically optimized according to different power consumption scenarios. In addition, if it is judged to be the charging scenario of a residential user's electric bicycle, control the intelligent miniature circuit breaker to trip and prohibit the electric bicycle from charging indoors. If it is judged to be the charging scenario of a public electric bicycle, adjust the overload value of the intelligent miniature circuit breaker to within 1 kW for load-limiting operation to ensure the safety of electric bicycle charging. If it is judged to be the dormitory application scenario, adjust the overload value to within 5 kW for load-limiting operation to avoid using high-power electrical appliances in the dormitory, thus preventing safety accidents.

[0056] The protection parameter adjustment method of the above multi-scenario adaptive intelligent miniature circuit breaker collects the voltage and current data of the circuit in real time, as well as the real-time current harmonic data, and uses these data to determine the type of electrical load, the electricity consumption period, the electricity consumption duration and the electricity consumption amount. Then, combined with the geographical location information of the installation position of the intelligent miniature circuit breaker, the specific electricity consumption scenario is identified. Subsequently, the protection parameters of the circuit breaker are automatically adjusted according to the identified different electricity consumption scenarios. For example, a higher overload threshold and instantaneous large current protection are set during the daytime office hours in the business district, while the overload protection threshold is reduced and the leakage protection is enhanced at night in the residential area. In addition, specific safety restriction measures are implemented for specific scenarios such as electric bicycle charging or dormitory applications, so as to dynamically optimize the protection configuration according to different electricity consumption scenarios, improving the protection accuracy and electricity consumption reliability.

[0057] In an exemplary embodiment, as Figure 3 shown, determining the type of electrical load, the electricity consumption period, the electricity consumption duration and the electricity consumption amount according to the real-time voltage, real-time current and real-time current harmonics includes:

[0058] S302, determining the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power and real-time power factor according to the real-time voltage and real-time current.

[0059] Exemplarily, the voltage effective value and current effective value are obtained by calculating the square average value of the voltage and current. The active power is obtained by multiplying the voltage effective value by the current effective value and then by the power factor. The reactive power is obtained by multiplying the voltage effective value by the current effective value and then by the sine value. And the power factor is obtained by dividing the active power by the apparent power. These electrical quantity information provides data support for the further determination of the electricity consumption scenario.

[0060] S304, extracting the load characteristics according to the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power, real-time power factor and real-time current harmonics.

[0061] Exemplarily, different types of loads (such as resistive, inductive, or capacitive loads) have different power factor characteristics. Resistive loads (such as incandescent lamps) typically have a power factor close to 1; inductive loads (such as motors) typically have a lagging power factor below 1; capacitive loads (such as some compensation capacitors) may have a leading power factor. Therefore, based on the real-time power factor, preliminary extraction of load characteristics can be performed to obtain the power factor characteristics of the electrical load. Further, based on the real-time effective voltage, real-time effective current, real-time active power, and real-time reactive power, and based on the corresponding sampling time, a curve graph that changes with time corresponding to each data can be constructed, so that based on the analysis of the curve graph, the curve characteristics of the electrical load can be obtained. Taking the real-time active power as an example, based on the constructed real-time active power curve, curve characteristics such as the peak active power and the duration of the peak active power can be obtained, providing data support for the determination of the electrical load type. In addition, by combining the collected real-time current harmonic data, such as analyzing and extracting the types of real-time current harmonics, the electrical load type can be further determined.

[0062] S306. Determine the electrical load type according to the load characteristics.

[0063] Exemplarily, based on the combination of the above-extracted power factor characteristics, curve characteristics, and types of real-time current harmonics of the electrical load, the specific electrical load type can be determined. For example, when it is monitored that the real-time power factor is close to 1 and the reactive power is close to zero, combined with the characteristics that the real-time active power curve shows smoothness and no obvious fluctuations, it can be initially judged as a resistive load (such as an incandescent lamp); if the real-time power factor is below 1 and shows a lagging phase difference, and at the same time the real-time active power curve shows periodic current peaks (such as when the refrigerator compressor starts), it can be judged as an inductive load (such as a refrigerator or an air conditioner).

[0064] In this embodiment, by calculating the real-time effective voltage, real-time effective current, real-time active power, real-time reactive power, and real-time power factor, combining the curve graphs of these electrical quantities changing with time, and the analysis of real-time current harmonics, the load type can be determined efficiently, the recognition accuracy of the power management system for different types of loads is improved, the adaptive protection ability of the intelligent miniature circuit breaker is enhanced, and thus the reliability and safety of the entire power system are improved.

[0065] In an exemplary embodiment, as Figure 4 shown, according to the real-time voltage, real-time current, and real-time current harmonics, determining the electrical load type, electricity consumption period, electricity consumption duration, and electricity consumption amount includes:

[0066] S402. Determine the real-time effective voltage, real-time effective current, real-time active power, real-time reactive power, and real-time power factor according to the real-time voltage and real-time current.

[0067] Among them, the determination methods of the real-time effective voltage, real-time effective current, real-time active power, real-time reactive power, and real-time power factor in this embodiment can refer to the descriptions in the above embodiments and will not be elaborated here.

[0068] S404. Determine the forward active energy indication value and the reverse active energy indication value according to the real-time effective voltage, real-time effective current, real-time active power, real-time reactive power, and real-time power factor.

[0069] S406. Record and store the forward active energy indication value and the reverse active energy indication value by means of instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing to determine the power consumption period, power consumption duration, and power consumption amount.

[0070] Exemplarily, the direction of power consumption (forward or reverse) at any time point can be determined through the monitored and calculated real-time active power. When the active power is positive, it indicates that electric energy flows from the power grid into the user side, and at this time, the forward active energy indication value is recorded; when the active power is negative, it indicates that electric energy flows reversely from the user side into the power grid (such as the case where a photovoltaic power generation system supplies power to the power grid), and at this time, the reverse active energy indication value is recorded. Then, these energy indication values are recorded and stored by means of instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing. Instantaneous freezing can capture the energy indication value at a certain moment; minute freezing records the energy indication value per minute; hourly freezing records the energy indication value at each hour; daily freezing records the energy indication value at specific time points every day; monthly freezing records the energy indication value at specific time points every month. Through the above methods, the power consumption situation in different time periods can be accurately recorded and analyzed, so as to determine the power consumption period (such as peak period and valley period), power consumption duration (i.e., the duration of power consumption within a specific period), and power consumption amount (i.e., the cumulative consumed electric energy within a specific period).

[0071] In this embodiment, by monitoring and recording the forward active energy indication value and the reverse active energy indication value in real time and storing these data by means of instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing, the power consumption period, power consumption duration, and power consumption amount can be accurately grasped, providing data support for the identification of power consumption scenarios.

[0072] To describe the implementation process of the entire control method of this application in more detail, the following takes Figure 5 as an example for illustration. As Figure 5As shown, in the initial stage, a general operating scenario is adopted to initialize and put into operation the intelligent miniature circuit breaker. The real-time voltage and real-time current of the line are obtained, and based on the real-time voltage, real-time current, and real-time current harmonics, the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount are determined (that is, the data of the line sampling points are recorded in real time, and the load type is analyzed by periodically analyzing the real-time recorded data). The geographical location of the line is obtained, and based on the geographical location, the type of electrical load, the electricity consumption period, the electricity consumption duration, and the electricity consumption amount, the electricity consumption scenario is determined. According to the electricity consumption scenario, the protection parameters of the intelligent miniature circuit breaker on the line are set to correspond to the electricity consumption scenario (that is, different parameter management is set for different application scenarios, the parameter model of the corresponding scenario is used for operation, and the change of the scenario is monitored in real time).

[0073] In an exemplary embodiment, as Figure 6 shown, the present application also provides an intelligent miniature circuit breaker, including: a circuit breaker switch, a control mechanism, an electrical parameter acquisition device, and a controller. Among them, the circuit breaker switch is connected in series on the line; the control mechanism is connected to the circuit breaker switch, and the control mechanism is used to control the on and off of the disconnecting switch; the electrical parameter acquisition device is used to acquire the real-time voltage and real-time current of the line; the controller is respectively connected to the control mechanism and the electrical parameter acquisition device. Among them, the controller is built with a positioning module, and the positioning module is used to obtain the geographical location. The controller is used to execute the steps of the protection parameter adjustment method of the multi-scenario adaptive intelligent miniature circuit breaker in the above embodiment, and the specific implementation manner can refer to the description in the above embodiment, which will not be elaborated here. Among them, the electrical parameter acquisition device includes a current transformer, which is used to convert the primary current into a secondary current; the circuit breaker switch refers to a switch that has the functions of closing and opening, can connect, carry, and disconnect the current under normal circuit conditions, and can also connect, carry for a certain time, and disconnect the current under specified abnormal circuit conditions.

[0074] It should be noted that the controller can run functions such as electrical quantity sampling, scenario recognition, dual-mode communication management, power management, Beidou positioning, load recognition, metering, storage management, parameter management, 4G communication management, human-machine interface, protection logic, information security, and communication protocols. Among them, electrical quantity sampling refers to the high-speed acquisition of the real-time voltage and real-time current of the line, saving the data into the real-time data space, and simultaneously calculating electrical quantity information such as the effective value of real-time voltage, the effective value of real-time current, real-time active power, real-time reactive power, and real-time power factor. Metering refers to calculating based on the real-time voltage and real-time current data in the real-time data space to obtain the indication values of forward active electric energy and reverse active electric energy, and performing instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing of the electric energy to achieve freezing and management. Dual-mode communication management refers to processing data such as the collected real-time voltage and real-time current and uploading them to the upstream terminal. Power management refers to recording in situations such as power-on, power-off, power failure, and abnormality, and performing hierarchical management and storage of data with different important levels. Load recognition refers to calculating based on the real-time voltage and real-time current data in the real-time data space, judging the type of electrical load on the loop, and storing it. Scenario recognition refers to storing and analyzing the recognized electrical load types, analyzing in combination with geographical location, electrical load type, power consumption period, power consumption duration, and power consumption amount, and recognizing the current power consumption scenario of the intelligent miniature circuit breaker. The protection parameters will be adaptively issued through parameter management, that is, reading and writing the parameters of the device, and reissuing the protection parameters according to the scenario recognition results. Storage management mainly refers to managing the reading and writing of the memory and performing hierarchical management according to the different important levels of the protection parameters. The human-machine interface is mainly for facilitating on-site data observation and maintenance. Protection logic refers to performing protection control according to the issued protection parameters to achieve the protection logic. Information security is mainly used to control information to achieve encrypted transmission to ensure information security. The communication protocols among them are mainly used to achieve multi-protocol communication, such as protocols like DL / T 645—2007, DL / T 698.45—2017, MODBUS, MQTT, etc., so as to adapt to various application scenarios.

[0075] The above intelligent miniature circuit breaker analyzes geographical location, type of electrical load, electricity usage period, electricity usage duration, and electricity consumption to identify electricity usage scenarios. Different sets of scenario parameters are set according to different electricity usage scenarios, and different scenario parameters are used to set operating parameters and protection parameters under different electricity usage scenarios, so that the intelligent miniature circuit breaker can achieve accurate operation monitoring, protection, and control for the corresponding scenarios. In addition, the intelligent miniature circuit breaker of the present application can be used in both electric bicycle charging scenarios and dormitory electricity usage scenarios. If it is determined to be a residential user's electric bicycle charging scenario, the circuit breaker is controlled to trip to prohibit the electric bicycle from charging indoors. If it is determined to be a public electric bicycle charging scenario, the overload value is adjusted to within 1 kW for load-limiting operation to ensure the safety of electric bicycle charging. If it is determined to be a dormitory electricity usage scenario, the overload value is adjusted to within 5 kW for load-limiting operation to avoid using high-power electrical appliances in the dormitory, thus preventing safety accidents from occurring.

[0076] In an exemplary embodiment, the intelligent miniature circuit breaker further includes a communication module. The communication module is connected to the controller and is used for communicating with an external terminal. Among them, the communication module includes a dual-mode module, a 4G module, and a Bluetooth module to achieve terminal interaction in different communication forms.

[0077] In an exemplary embodiment, the intelligent miniature circuit breaker further includes an encryption chip. The encryption chip is connected to the controller and supports encryption algorithms for security authentication to ensure communication security.

[0078] In an exemplary embodiment, the intelligent miniature circuit breaker further includes a power supply module for converting external three-phase alternating current 3*AC220V or single-phase alternating current AC220V into power supplies that each module can work with, such as DC12V, DC5V, DC3.3V, and DC1.8V DC power supplies.

[0079] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps does not have a strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0080] Based on the same inventive concept, an embodiment of the present application further provides a protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker for implementing the protection parameter adjustment method of the multi-scenario adaptive intelligent miniature circuit breaker involved above. The solution provided by this device to solve the problem is similar to the solution described in the above method. Therefore, the specific limitations in one or more embodiments of the protection parameter adjustment device for the multi-scenario adaptive intelligent miniature circuit breaker provided below can refer to the limitations on the protection parameter adjustment method of the multi-scenario adaptive intelligent miniature circuit breaker in the above text, and will not be repeated here.

[0081] In an exemplary embodiment, as Figure 7 shown, a protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker is provided, including: an electrical parameter acquisition module 702, a power consumption scenario determination module 704, and a protection parameter adjustment module 706, where:

[0082] The electrical parameter acquisition module 702 is configured to acquire the real-time voltage, real-time current, and real-time current harmonics of the line, and determine the type of electrical load, power consumption period, power consumption duration, and power consumption amount according to the real-time voltage, real-time current, and real-time current harmonics.

[0083] The power consumption scenario determination module 704 is configured to acquire the geographical location of the line, and determine the power consumption scenario according to the geographical location, type of electrical load, power consumption period, power consumption duration, and power consumption amount.

[0084] The protection parameter adjustment module 706 is configured to set the protection parameters of the intelligent miniature circuit breaker on the line corresponding to the power consumption scenario according to the power consumption scenario.

[0085] In an exemplary embodiment, the above electrical parameter acquisition module 702 includes:

[0086] An electrical parameter determination unit for determining the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, and the real-time power factor according to the real-time voltage and the real-time current.

[0087] A load characteristic extraction unit for extracting load characteristics according to the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, the real-time power factor, and the real-time current harmonics.

[0088] An electrical load type determination unit for determining the type of electrical load according to the load characteristics.

[0089] In an exemplary embodiment, the above electrical parameter acquisition module 702 further includes:

[0090] The electrical parameter determination unit determines the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, and the real-time power factor according to the real-time voltage and the real-time current.

[0091] The electric energy indication determination unit is used to determine the forward active electric energy indication and the reverse active electric energy indication according to the effective value of the real-time voltage, the effective value of the real-time current, the real-time active power, the real-time reactive power, and the real-time power factor.

[0092] The electricity quantity determination unit is used to record and store the forward active electric energy indication and the reverse active electric energy indication in the ways of instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing, so as to determine the power consumption period, the power consumption duration, and the power consumption quantity.

[0093] Each module in the protection parameter adjustment device of the above-mentioned multi-scenario adaptive intelligent miniature circuit breaker can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so as to facilitate the processor to call and execute the operations corresponding to each of the above modules.

[0094] In an exemplary embodiment, a computer device is provided. The computer device can be a controller, and its internal structure diagram can be as Figure 8 shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store real-time voltage and real-time current data. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes a method for adjusting the protection parameters of a multi-scenario adaptive intelligent miniature circuit breaker.

[0095] Those skilled in the art can understand that Figure 8 the structure shown in

[0096] In an exemplary embodiment, a controller is provided, which includes a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the steps in the above method embodiments are implemented.

[0097] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0098] In one embodiment, a computer program product is provided, which includes a computer program. When the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0099] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include Read-Only Memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, Resistive Random Access Memory (ReRAM), Magnetoresistive Random Access Memory (MRAM), Ferroelectric Random Access Memory (FRAM), Phase Change Memory (PCM), graphene memory, etc. Volatile memory can include Random Access Memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, Artificial Intelligence (AI) processors, etc., without limitation.

[0100] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this application.

[0101] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A multi-scenario adaptive protection parameter adjustment method for a smart miniature circuit breaker, characterized in that: include: Obtaining real-time voltage, real-time current, and real-time current harmonics of the line, and determining the type of power load, power consumption period, power consumption duration, and power consumption based on the real-time voltage, real-time current, and real-time current harmonics; Obtaining a geographical location of the line, and determining a power usage scenario based on the geographical location, the power load type, the power usage period, the power usage duration, and the power consumption; The geographical location is used to indicate the actual physical location where the smart miniature circuit breaker is installed; According to the power usage scenario, protection parameters of the smart miniature circuit breaker on the line are set to correspond to the power usage scenario.

2. The method for adjusting protection parameters of the multi-scenario adaptive intelligent miniature circuit breaker according to claim 1, characterized in that The determining of the power load type, power consumption period, power consumption duration, and power consumption according to the real-time voltage, the real-time current, and the real-time current harmonics includes: Determine a real-time voltage effective value, a real-time current effective value, a real-time active power, a real-time reactive power, and a real-time power factor according to the real-time voltage and the real-time current; Extracting load characteristics according to the real-time voltage effective value, the real-time current effective value, the real-time active power, the real-time reactive power, the real-time power factor, and the real-time current harmonics; The power load type is determined according to the load characteristics.

3. The method for adjusting the protection parameters of the multi-scenario adaptive intelligent miniature circuit breaker according to claim 1, characterized in that, The determining of the power load type, power consumption period, power consumption duration, and power consumption according to the real-time voltage, the real-time current, and the real-time current harmonics includes: Determine a real-time voltage effective value, a real-time current effective value, a real-time active power, a real-time reactive power, and a real-time power factor according to the real-time voltage and the real-time current; Determine the forward active electric energy indication and the reverse active electric energy indication according to the real-time voltage effective value, the real-time current effective value, the real-time active power, the real-time reactive power and the real-time power factor; The forward active electric energy indication and the reverse active electric energy indication are recorded and stored in the manner of instantaneous freezing, minute freezing, hourly freezing, daily freezing and monthly freezing to determine the power consumption period, the power consumption duration and the power consumption.

4. A protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker, characterized in that, The device comprises: An electrical parameter acquisition module is used to obtain the real-time voltage, real-time current and real-time current harmonics of the line, and determine the power load type, power consumption period, power consumption duration and power consumption based on the real-time voltage, real-time current and real-time current harmonics; a power usage scenario determination module, configured to obtain a geographical location of the line and determine a power usage scenario based on the geographical location, the power load type, the power usage period, the power usage duration, and the power consumption; the geographical location is used to indicate the actual physical location where the smart miniature circuit breaker is installed; The protection parameter adjustment module is used to set the protection parameters of the smart miniature circuit breaker on the line to correspond to the power usage scenario according to the power usage scenario.

5. A controller, comprising a memory and a processor, the memory storing a computer program, characterized in that, When the processor executes the computer program, the steps of the method according to any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

7. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

8. A smart miniature circuit breaker, characterized in that, include: The disconnecting switch is connected in series on the line; The control mechanism is connected to the disconnecting switch, and the control mechanism is used to control the on / off of the disconnecting switch; The electrical parameter acquisition device is used to acquire the real-time voltage and real-time current of the line; The controller according to claim 5 is respectively connected to the control mechanism and the electrical parameter acquisition device; Wherein, the controller is built with a positioning module, and the positioning module is used to obtain the geographical location.

9. The intelligent miniature circuit breaker according to claim 8, characterized in that: It further includes: The communication module is connected to the controller and is used for communicating with an external terminal.

10. The intelligent miniature circuit breaker according to claim 9, characterized in that: It further includes: The encryption chip is connected to the controller.

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