Multi-scene self-adaptive intelligent miniature circuit breaker protection parameter adjustment method and intelligent miniature circuit breaker

Abstract

The invention relates to a protection parameter adjustment method of a multi-scene self-adaptive intelligent miniature circuit breaker and the intelligent miniature circuit breaker. The method comprises the following steps: acquiring real-time voltage, real-time current and real-time current harmonic waves of a line, and determining an electrical load type, an electrical time period, an electrical duration and an electrical quantity according to the real-time voltage, the real-time current and the real-time current harmonic waves; obtaining the geographic position of the line, and determining a power consumption scene according to the geographic position, the power consumption load type, the power consumption time period, the power consumption duration and the power consumption quantity; and setting the protection parameters of the intelligent miniature circuit breaker on the line to correspond to the power consumption scene according to the power consumption scene. By adopting the method, the protection parameters can be adjusted according to different power consumption scenes.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to a protection parameter adjustment method of a multi-scenario adaptive intelligent miniature circuit breaker and an intelligent miniature circuit breaker. Background Art

[0002] With the development of society, the functional requirements for miniature circuit breakers are increasing, and the application scenarios are endless. In addition to traditional residential electricity use, they also include photovoltaics, energy storage, charging car charging piles, charging automatic car charging piles, dormitories, etc.

[0003] Currently, the protection parameters of traditional miniature circuit breakers are fixed when they leave the factory and cannot be adjusted on site. Although electronic miniature circuit breakers have reserved adjustable parameter functions, the parameters need to be set manually on site. In addition, the load type of the miniature circuit breaker will also change during actual use, and it cannot respond to changes in load type in a timely manner, resulting in the protection parameters of the miniature circuit breaker cannot be accurately matched, greatly reducing the protection accuracy and power reliability. Summary of the invention

[0004] Based on this, it is necessary to provide a multi-scenario adaptive protection parameter adjustment method and a smart miniature circuit breaker for the above-mentioned technical problems.

[0005] In a first aspect, the present application provides a multi-scenario adaptive protection parameter adjustment method for a smart miniature circuit breaker, comprising:

[0006] Obtain the real-time voltage, real-time current and real-time current harmonics of the line, and determine 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;

[0007] Obtain the geographical location of the line, and determine the electricity usage scenario based on the geographical location, power load type, power usage period, power usage duration, and power consumption;

[0008] According to the power usage scenario, the protection parameters of the smart miniature circuit breakers on the line are set to correspond to the power usage scenario.

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

[0010] According to the real-time voltage and real-time current, determine the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power and real-time power factor;

[0011] Extract load characteristics based on real-time voltage RMS, real-time current RMS, real-time active power, real-time reactive power, hourly power factor and real-time current harmonics;

[0012] Determine the power load type based on load characteristics.

[0013] In one embodiment, determining the type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics includes:

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

[0015] According to the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power and real-time power factor, the positive active electric energy indication and the reverse active electric energy indication are determined;

[0016] The positive active electric energy indication and the reverse active electric energy indication are recorded and stored by instantaneous freezing, minute freezing, hourly freezing, daily freezing and monthly freezing to determine the power consumption period, power consumption duration and power consumption.

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

[0018] The electric 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 type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics;

[0019] The power consumption scenario determination module is used to obtain the geographical location of the line and determine the power consumption scenario based on the geographical location, power load type, power consumption period, power consumption duration and power consumption;

[0020] The protection parameter adjustment module is used to set the protection parameters of the smart miniature circuit breakers on the line to correspond to the power usage scenarios according to the power usage scenarios.

[0021] In a third aspect, the present application further provides a controller including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method in the above embodiment when executing the computer program.

[0022] In a fourth aspect, the present application further 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 embodiment are implemented.

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

[0024] In a sixth aspect, the present application further provides a smart miniature circuit breaker, comprising:

[0025] A circuit breaker is connected in series with the line;

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

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

[0028] The controller in the above embodiment is connected to the control mechanism and the electrical parameter acquisition device respectively;

[0029] The controller has a built-in positioning module, which is used to obtain the geographic location.

[0030] In one embodiment, the smart miniature circuit breaker further includes:

[0031] The communication module is connected to the controller and is used to communicate with external terminals.

[0032] In one embodiment, the smart miniature circuit breaker further includes:

[0033] Encryption chip, connected to the controller.

[0034] The above-mentioned multi-scenario adaptive protection parameter adjustment method of the intelligent miniature circuit breaker and the intelligent miniature circuit breaker have at least the following beneficial effects:

[0035] By collecting the voltage and current data of the line in real time, as well as the real-time current harmonic data, and using these data to determine the power load type, power consumption period, power consumption duration and power consumption, combined with the geographical location information of the installation location of the smart miniature circuit breaker, the specific power consumption scenario is identified; then, the protection parameters of the circuit breaker are automatically adjusted according to the different power consumption scenarios identified. For example, a higher overload threshold and instantaneous high current protection are set during daytime office hours in commercial areas, while the overload protection threshold is lowered and leakage protection is enhanced in residential areas at night. In addition, specific safety restrictions are implemented for specific scenarios such as electric bicycle charging or dormitory applications, so as to dynamically optimize the protection configuration according to different power consumption scenarios, thereby improving protection accuracy and power 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 drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0037] FIG1 is an application environment diagram of a multi-scenario adaptive protection parameter adjustment method for a smart miniature circuit breaker in one embodiment;

[0038] FIG2 is a schematic flow chart of a method for adjusting protection parameters of a multi-scenario adaptive intelligent miniature circuit breaker in one embodiment;

[0039] 3 is a flowchart of steps for determining the type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics in one embodiment;

[0040] 4 is a flow chart of a method for determining the type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics in another embodiment;

[0041] FIG5 is a schematic flow chart of a method for adjusting protection parameters of a multi-scenario adaptive intelligent miniature circuit breaker in another embodiment;

[0042] FIG6 is a schematic diagram of the structure of a smart miniature circuit breaker in one embodiment;

[0043] FIG7 is a structural block diagram of a protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker in another embodiment;

[0044] FIG. 8 is a diagram showing the internal structure of a controller in one embodiment. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with 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 multi-scenario adaptive protection parameter adjustment method of the smart miniature circuit breaker provided in the embodiment of the present application can be applied to the application environment shown in Figure 1. Wherein, the line refers to a low-voltage AC transmission line, and the power consumption scene 102 can refer to a power demand scene composed of different power consumption equipment, including ordinary household power consumption, street lamp power consumption scene, dormitory power consumption scene, electric bicycle charging scene, energy storage scene, photovoltaic power generation scene, and electric vehicle charging pile charging scene. The above scenes are only used for example, and the present application is not limited to the above power consumption scenes. The smart miniature circuit breaker 104 is installed on the branch of the line corresponding to each power consumption scene. Among them, the controller in the smart miniature circuit breaker 104 obtains the real-time voltage, real-time current and real-time current harmonics of the line, and determines the power load type, 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 scene according to the geographical location, power load type, power consumption period, power consumption duration and power consumption; according to the power consumption scene, the protection parameters of the circuit breaker on the line are set to correspond to the power consumption scene.

[0047] In an exemplary embodiment, as shown in FIG2 , a multi-scenario adaptive protection parameter adjustment method for a smart miniature circuit breaker is provided, and the method is applied to the controller of the smart miniature circuit breaker in FIG1 as an example for explanation, including the following steps S202 to S206. Among them:

[0048] S202, obtaining the 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 according to the real-time voltage, real-time current and real-time current harmonics.

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

[0050] Exemplarily, since the voltage of the line is generally stable, the acquisition of the real-time voltage of the line can be pre-set, and the acquisition of the real-time current of the line can be collected at different sampling time nodes through the built-in current transformer in the smart miniature circuit breaker, and the corresponding sampling time is recorded. After the controller obtains the real-time current of the line and the pre-set real-time voltage of the line from the current transformer, the power consumption period and power consumption duration of the power-consuming equipment connected to the line 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, and combined with the above-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, the type of power load on the current circuit can be identified by analyzing features such as power factor, and at the same time analyzing features such as current waveform based on the collected real-time current harmonics. For example, if the current waveform is detected to have obvious periodic peaks and the power factor is low, it may be identified as a motor 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 the specific power consumption scenario is further determined based on this.

[0051] S204, obtaining the geographical location of the line, and determining the power usage scenario according to the geographical location, power load type, power usage period, power usage duration and power consumption.

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

[0053] For example, the geographical location information of the line is obtained through the Beidou positioning module integrated in the controller, and the determined power load type, power consumption period, power consumption duration and power consumption data are combined to determine the current specific power consumption scenario. Specifically, the climate conditions and electricity price policies of the area can be understood based on the geographical location, and the type of load currently connected can be identified by monitoring the real-time voltage and current. The power consumption pattern is then further refined according to the different power consumption periods and durations of the day. Finally, the combination of this information can infer specific power consumption scenarios such as "the location is in a commercial area during the peak daytime power consumption period, and office equipment is used for a long time" or "high-power household appliances are used in residential areas at night." For example, in an office located in a commercial center, monitoring revealed that there was continuous high-power consumption during the daytime working hours (9 a.m. to 6 p.m.). Combined with real-time current and voltage data analysis, it was determined that the main loads were office equipment such as computers and printers. Since the location was in a business district, it was initially determined to be a typical office power consumption scenario. Further confirmation was made through power consumption duration and power consumption. For example, for a normal office power consumption environment, the power consumption duration was mostly 8-10 hours, and the power consumption was positive (indicating that power was taken from the power grid at this time), while for power consumption scenarios such as photovoltaic power generation, the power consumption was negative (indicating that power was transmitted to the power grid at this time). Therefore, the actual power consumption scenario can be further confirmed by combining power consumption duration and power consumption.

[0054] S206: According to the power usage scenario, the protection parameters of the smart miniature circuit breaker on the line are set to correspond to the power usage scenario.

[0055] Exemplarily, according to the power usage scenario, the protection parameters are automatically adjusted. For example, when a high-load office scenario in a commercial area during the day is identified, the smart miniature circuit breaker is set to have a higher overload threshold to adapt to the needs of long-term continuous work, and the instantaneous high current protection is enhanced to prevent the impact when the equipment starts; and during the low-load period in the residential area at night, the overload protection threshold is lowered and the leakage protection function is strengthened to ensure safety at night. In this way, the protection configuration of the circuit breaker can be dynamically optimized according to different power usage scenarios. In addition, if it is judged that it is a residential user's electric bicycle charging scenario, the smart miniature circuit breaker is controlled to open the gate, and the electric bicycle is prohibited from charging at home. If it is judged to be a public electric bicycle charging scenario, the overload value of the smart miniature circuit breaker is adjusted to within 1kW for load-limited operation to ensure the safety of electric bicycle charging. If it is judged to be a dormitory application scenario, the overload value is adjusted to within 5kW for load-limited operation to avoid the use of high-power electrical appliances in the dormitory, which may cause safety accidents.

[0056] The above-mentioned multi-scenario adaptive protection parameter adjustment method of the intelligent miniature circuit breaker collects the voltage and current data of the line and the real-time current harmonic data in real time, and uses these data to determine the power load type, power consumption period, power consumption duration and power consumption, and then combines the geographical location information of the installation location of the intelligent miniature circuit breaker to identify the specific power consumption scenario; then, the protection parameters of the circuit breaker are automatically adjusted according to the different identified power consumption scenarios, such as setting a higher overload threshold and instantaneous high current protection during daytime office hours in commercial areas, and lowering the overload protection threshold and enhancing leakage protection at night in residential areas. In addition, specific safety restrictions are implemented for specific scenarios such as electric bicycle charging or dormitory applications, so as to realize dynamic optimization of protection configuration according to different power consumption scenarios, thereby improving protection accuracy and power reliability.

[0057] In an exemplary embodiment, as shown in FIG3 , determining the type of power load, power consumption period, power consumption duration, and power consumption according to the real-time voltage, real-time current, and real-time current harmonics includes:

[0058] S302, determining 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 according to the real-time voltage and the real-time current.

[0059] Exemplarily, the effective value of voltage and the effective value of current are obtained by calculating the square average of voltage and current, the active power is obtained by multiplying the effective value of voltage by the effective value of current and then by the power factor, the reactive power is obtained by multiplying the effective value of voltage by the effective value of current 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 provide data support for further determination of power consumption scenarios.

[0060] S304, 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.

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

[0062] S306, determining the power 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 power load, the specific type of power load can be determined. For example, when the real-time power factor is close to 1 and the reactive power is close to zero, combined with the fact that the real-time active power curve shows a stable and no obvious fluctuation, it can be preliminarily determined to be a resistive load (such as an incandescent lamp); if the real-time power factor is lower than 1 and shows a lagging phase difference, and the real-time active power curve shows a periodic current peak (such as when the refrigerator compressor is started), it can be determined to be an inductive load (such as a refrigerator or air conditioner).

[0064] In this embodiment, by calculating the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power and real-time power factor, combining the curve graphs of these electrical quantities changing over time, and the analysis of real-time current harmonics, the load type can be efficiently determined, thereby improving the recognition accuracy of the power management system for different types of loads, enhancing the adaptive protection capability of the smart miniature circuit breaker, and thus improving the reliability and safety of the entire power system.

[0065] In an exemplary embodiment, as shown in FIG4 , determining the type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics includes:

[0066] S402, determining 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 according to the real-time voltage and the real-time current.

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

[0068] S404, determining the positive 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.

[0069] S406, using instantaneous freezing, minute freezing, hourly freezing, daily freezing and monthly freezing methods, records and stores the positive active electric energy indication and the reverse active electric energy indication to determine the power consumption period, power consumption duration and power consumption.

[0070] Exemplarily, by monitoring and calculating the real-time active power, the direction of electric energy consumption (forward or reverse) at any time point can be determined. When the active power is positive, it means that electric energy flows from the power grid to the user end, and the positive active electric energy indication is recorded at this time; when the active power is negative, it means that electric energy flows from the user end to the power grid in the reverse direction (such as the case where the photovoltaic power generation system supplies power to the power grid), and the reverse active electric energy indication is recorded at this time. Then, these electric energy indications are recorded and stored by instantaneous freezing, minute freezing, hourly freezing, daily freezing, and monthly freezing. Instantaneous freezing can capture the electric energy indication at a certain moment; minute freezing records the electric energy indication every minute; hourly freezing records the electric energy indication at each hour; daily freezing records the electric energy indication at a specific time point every day; monthly freezing records the electric energy indication at a specific time point every month. Through the above method, the electricity consumption in different time periods can be accurately recorded and analyzed, so as to determine the electricity consumption period (such as peak period and off-peak period), the duration of electricity consumption (that is, the duration of electricity consumption in a specific period of time) and the amount of electricity consumed (that is, the cumulative amount of electricity consumed in a specific period of time).

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

[0072] In order to describe the implementation process of the entire control method of the present application in more detail, Figure 5 is used as an example for explanation below. As shown in Figure 5, in the initial stage, the general operation scenario is used to initialize and put into operation the smart miniature circuit breaker. Obtain the real-time voltage and real-time current of the line, and determine the power load type, power period, power duration and power consumption based on the real-time voltage, real-time current and real-time current harmonics (that is, record the line sampling point data in real time, and periodically analyze the load type of the real-time recorded data). Obtain the geographical location of the line, and determine the power consumption scenario based on the geographical location, power load type, power period, power duration and power consumption. According to the power consumption scenario, set the protection parameters of the smart miniature circuit breaker on the line to correspond to the power consumption scenario (that is, set different parameter management for different application scenarios, use the parameter model of the corresponding scenario for operation, and monitor the changes in the scenario in real time).

[0073] In an exemplary embodiment, as shown in FIG6 , the present application also provides a smart miniature circuit breaker, including: a circuit breaker, a control mechanism, an electrical parameter acquisition device and a controller. The circuit breaker is connected in series to the line; the control mechanism is connected to the circuit breaker, and the control mechanism is used to control the on and off of the disconnect switch; the electrical parameter acquisition device is used to collect the real-time voltage and real-time current of the line; the controller is connected to the control mechanism and the electrical parameter acquisition device, respectively. The controller has a built-in positioning module, and the positioning module is used to obtain the geographic location. The controller is used to execute the steps of the protection parameter adjustment method of the multi-scenario adaptive smart miniature circuit breaker in the above embodiment. The specific implementation method can refer to the description in the above embodiment, which will not be repeated here. The electrical parameter acquisition device includes a current transformer for converting the primary current into the secondary current; the circuit breaker refers to a switch with a closing and opening function, which can connect, carry and disconnect the current under normal circuit conditions, and can also connect, carry 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, scene recognition, dual-mode communication management, power management, Beidou positioning, load identification, metering, storage management, parameter management, 4G communication management, human-machine interface, protection logic, information security, and communication protocol. Among them, electrical quantity sampling refers to the high-speed collection of the real-time voltage and real-time current of the line, and the data is saved in the real-time data space, and the real-time voltage effective value, real-time current effective value, real-time active power, real-time reactive power, real-time power factor and other electrical quantity information are calculated. Metering refers to the calculation based on the real-time voltage and real-time current data in the real-time data space, and the positive active power indication and reverse active power indication are obtained, and the electric energy is instantly frozen, minute frozen, hourly frozen, daily frozen, and monthly frozen to achieve freezing and management. Dual-mode communication management refers to the processing of the collected real-time voltage and real-time current data and sending them to the uplink terminal. Power management refers to the recording of power-on, power-off, power-off, abnormal conditions, and the hierarchical management and storage of data of different importance levels. Load identification refers to the calculation based on the real-time voltage and real-time current data in the real-time data space, and the determination and storage of the type of power load on the circuit. Scenario identification refers to the storage and analysis of the identified power load type, and the analysis combined with the geographical location, power load type, power period, power duration, and power consumption, and the identification of the current power consumption scenario of the smart miniature circuit breaker, and the adaptive distribution of protection parameters through parameter management, that is, reading and writing the parameters of the device, and re-issuing the protection parameters according to the results of scenario identification. Storage management mainly refers to the management of the reading and writing of the storage, and hierarchical management according to the different importance levels of the protection parameters. The human-machine interface is mainly convenient for on-site observation of data and maintenance. Protection logic refers to the protection control based on the protection parameters issued to realize the protection logic. Information security is mainly used to control information to achieve encrypted transmission and ensure information security. The communication protocol is mainly used to realize multi-protocol communication, such as DL / T 645-2007, DL / T 698.45-2017, MODBUS, MQTT and other protocols, so as to adapt to various application scenarios.

[0075] The above-mentioned smart miniature circuit breaker uses geographical location, power load type, power time period, power duration, and power consumption for analysis to identify power usage scenarios. Different scene parameter groups are set according to different power usage scenarios, and different scene parameters are used to set operating parameters and set protection parameters in different power usage scenarios, so that the smart miniature circuit breaker can achieve accurate operation monitoring, protection and control for the corresponding scenarios. In addition, the smart miniature circuit breaker of this application can be used in both electric bicycle charging scenarios and dormitory power usage scenarios. If it is judged to be a residential user's electric bicycle charging scenario, the circuit breaker is controlled to open and electric bicycles are prohibited from charging at home. If it is judged to be a public electric bicycle charging scenario, the overload value is adjusted to within 1kW for load-limited operation to ensure the safety of electric bicycle charging. If it is judged to be a dormitory power usage scenario, the overload value is adjusted to within 5kW for load-limited operation to avoid the use of high-power electrical appliances in the dormitory, which may cause safety accidents.

[0076] In an exemplary embodiment, the smart miniature circuit breaker further includes a communication module. The communication module is connected to the controller and is used to communicate with an external terminal. 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 smart miniature circuit breaker further includes an encryption chip, which 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 also includes a power supply module for converting external three-phase alternating current 3*AC220V or single-phase alternating current AC220V into a power supply that can work for each module, such as: DC12V, DC5V, DC3.3V, DC1.8V DC power supply.

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

[0080] Based on the same inventive concept, the embodiment of the present application also provides a multi-scenario adaptive intelligent miniature circuit breaker protection parameter adjustment device for implementing the multi-scenario adaptive intelligent miniature circuit breaker protection parameter adjustment method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in the embodiments of the multi-scenario adaptive intelligent miniature circuit breaker protection parameter adjustment device provided below can refer to the limitations of the multi-scenario adaptive intelligent miniature circuit breaker protection parameter adjustment method above, and will not be repeated here.

[0081] In an exemplary embodiment, as shown in FIG7 , a protection parameter adjustment device for a multi-scenario adaptive intelligent miniature circuit breaker is provided, comprising: an electrical parameter acquisition module 702 , an electrical scenario determination module 704 , and a protection parameter adjustment module 706 , wherein:

[0082] The electrical parameter acquisition module 702 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 according to the real-time voltage, real-time current and real-time current harmonics.

[0083] The power usage scenario determination module 704 is used to obtain the geographical location of the line and determine the power usage scenario according to the geographical location, power load type, power usage period, power usage duration and power consumption.

[0084] The protection parameter adjustment module 706 is used to set the protection parameters of the smart miniature circuit breakers on the line to correspond to the power usage scenarios according to the power usage scenarios.

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

[0086] The electrical parameter determination unit is used to determine 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 according to the real-time voltage and the real-time current.

[0087] The load characteristic extraction unit is used to extract the load characteristic 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.

[0088] The power load type determination unit is used to determine the power load type according to the load characteristics.

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

[0090] The electrical parameter determination unit determines 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 according to the real-time voltage and the real-time current.

[0091] The electric energy indication value determination unit is used to determine the positive active electric energy indication value and the reverse active electric energy indication value 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.

[0092] The power determination unit is used to record and store the positive active power indication and the reverse active power indication by instantaneous freezing, minute freezing, hourly freezing, daily freezing and monthly freezing to determine the power consumption period, power consumption duration and power consumption.

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

[0094] In an exemplary embodiment, a computer device is provided, which may be a controller, and its internal structure diagram may be shown in FIG8. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to 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 an external device. 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, a protection parameter adjustment method for a multi-scenario adaptive intelligent miniature circuit breaker is implemented.

[0095] Those skilled in the art will understand that the structure shown in FIG. 8 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0096] In an exemplary embodiment, a controller is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[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-mentioned method embodiments are implemented.

[0098] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0099] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and 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-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present 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), magnetic 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0100] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this application.

[0101] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

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

2. The protection parameter adjustment method of a multi-scenario adaptive intelligent miniature circuit breaker according to claim 1 is characterized in that: The determining of the type of power load, 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 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 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 protection parameter adjustment method of a multi-scenario adaptive intelligent miniature circuit breaker according to claim 1 is characterized in that: The determining of the type of power load, 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 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 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 by 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 multi-scenario adaptive protection parameter adjustment device for a smart miniature circuit breaker, characterized in that: The device comprises: An electrical parameter acquisition module, used to acquire the real-time voltage, real-time current and real-time current harmonics of the line, and determine the type of power load, power consumption period, power consumption duration and power consumption according to the real-time voltage, real-time current and real-time current harmonics; A power usage scenario determination module, used to obtain the geographical location of the line, and determine the power usage scenario according to the geographical location, the power load type, the power usage period, the power usage duration and the power consumption amount; 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, wherein the memory stores 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: A circuit breaker is connected in series with the line; A control mechanism connected to the circuit breaker, the control mechanism being used to control the on and off of the circuit breaker; An electrical parameter acquisition device, used for acquiring the real-time voltage and real-time current of the line; The controller according to claim 5, connected to the control mechanism and the electrical parameter acquisition device respectively; The controller has a built-in positioning module, and the positioning module is used to obtain the geographic location.

9. The intelligent miniature circuit breaker according to claim 8, characterized in that: Also 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: Also includes: An encryption chip is connected to the controller.

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