Flexible load control technical method of built-in electric energy meter based on large-current switch

Abstract

The invention relates to the technical field of power system control, and discloses a flexible load control technical method based on a high-current switch built-in electric energy meter, which comprises the following steps: monitoring current and voltage in real time, and inputting data into a fuzzy logic control system; formulating a fuzzy rule, and judging a current state through fuzzy logic control; implementing a safe load removal and reset strategy for a super-capacitance power utilization scene, and executing an overcurrent opening operation; setting a maximum load threshold value according to different power utilization environment characteristics, and formulating a load control strategy; and a multi-stage power control scheme is implemented, and a load control security authentication mechanism is established. According to the method, electricity utilization characteristic research in typical application scenes is carried out, a load flexible control technology is researched in combination with a switch built-in scheme, a multi-scene and multi-cost control strategy is made through multi-stage power control, overcurrent opening and self-adaptive closing functions, flexible control over power consumers is achieved, and the electricity utilization management level is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system control, and in particular to a flexible load control technical method for a high-current switch built-in electric energy meter. Background Art

[0002] With the improvement of the living standards of urban and rural residents, low-voltage residential users frequently exceed their capacity. For example, in residential areas without natural gas (such as old residential areas, urban villages, and multi-story buildings in towns), the power load is large when the weather changes, which is easy to exceed the user's original power meter usage limit. Long-term over-capacity power consumption and loose power meter wiring can easily cause meter failures and even fires, which are more serious problems. At present, power meters have the following problems:

[0003] At present, when the maximum current of the electricity meter exceeds 60A, an external circuit breaker is required to meet the remote closing and opening fee control function. However, the external circuit breaker is prone to misoperation and replacement. At the same time, the external circuit breaker is expensive and the installation location is limited. Some old user points cannot be installed due to the location of the meter box.

[0004] The switch external energy meter and external circuit breaker mode used in high-current power consumption scenarios has high costs, complex asset management, high requirements for on-site space, increased wiring points, increased safety hazards, and is prone to problems such as false operation, leading to an increase in customer complaints.

[0005] 2. When the energy meter is used in the scenario of over-capacity electricity consumption, it is easy to cause the meter to burn out due to abnormal contact points. For example, agricultural power lines are frequently made of aluminum. After the energy meter is connected, the copper-aluminum transition surface between the two is prone to electrochemical corrosion in the scenario of over-capacity electricity consumption, and the contact resistance is large and it is easy to heat up. In addition, thermal expansion and contraction can easily cause deformation and lift the fixing screws, resulting in loose wiring of the energy meter.

[0006] In addition, the current energy meter is prone to arcing when opening and closing the switch with high current load, which affects the performance of the device, such as the degradation of contact performance, heating and even damage. In addition, the heating of the device can easily affect the measurement accuracy of the energy meter.

[0007] 3. The existing load control strategy only has fee-controlled opening and closing of the switch, which cannot meet the flexible load control requirements under different power consumption scenarios, and cannot guarantee basic power consumption for residents or special or emergency power consumption for users, resulting in many customer complaints and poor user experience.

[0008] In view of the current frequent over-capacity electricity consumption and the many problems with the use of external circuit breakers in electricity meters under high current, it is urgent to study the implementation plan of placing high-current switches inside the electricity meter, and at the same time, it is necessary to study the technology of preventing meters from burning when using high current, and develop switch-built-in electricity meters that can operate safely and reliably under high current electricity usage scenarios, so as to overcome the technical difficulty that 80A electricity meters cannot be installed with built-in switches and operate reliably; in addition, the current load control mode is single. In order to better meet the electricity needs of users, multi-scenario load control strategies are formulated according to the electricity consumption characteristics of different users in typical application scenarios, so as to improve users' electricity experience and help build my country's new power system. Summary of the invention

[0009] In view of the above existing problems, the present invention is proposed.

[0010] Therefore, the present invention provides a flexible load control technical method for an electric energy meter with a built-in large current switch, which can carry out research on electricity consumption characteristics under typical application scenarios, and study the flexible load control technology in combination with the built-in switch solution: through multi-level power control, overcurrent disconnection, and adaptive closing functions, multi-scenario and multi-fee control strategies are formulated to achieve flexible control of power users and improve the level of electricity consumption management.

[0011] To solve the above technical problems, the present invention provides the following technical solutions, which are flexible load control technical methods for electric energy meters with built-in large current switches, including: real-time monitoring of current and voltage, and inputting data into a fuzzy logic control system; formulating fuzzy rules, and judging the current state through fuzzy logic control; implementing load safety removal and reset strategies for over-capacity power consumption scenarios, and performing over-current tripping operations; setting maximum load thresholds according to the characteristics of different power consumption environments, and formulating load control strategies; implementing multi-level power control schemes, and establishing a load control safety authentication mechanism.

[0012] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, the real-time monitoring of current and voltage includes real-time monitoring of the user's current and voltage data, using high-precision sensors to sample the current and voltage, setting the sampling frequency in the process of data collection, introducing a data filtering mechanism to smooth the signal, reduce noise interference, and inputting the processed data into the fuzzy logic control system for subsequent status judgment and analysis.

[0013] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, wherein: the formulation of fuzzy rules includes establishing multiple fuzzy rules for judging whether the current exceeds the set threshold value according to the current change rate, time slope and historical power consumption data;

[0014] Define the input variables current change rate ΔI and voltage change rate ΔV, set the threshold range, normalize the input value so that each input variable range is between [0,1], define the fuzzy set and give the membership function;

[0015] Based on the fuzzy results, the judgment is made according to the following formula:

[0016]

[0017] Among them, F is the judgment coefficient, which is used to judge whether the current reaches the overcurrent state, α and β are the adjustment coefficients, I current is the real-time current value, is the rate of change of current.

[0018] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, wherein: the execution of the overcurrent tripping operation includes formulating a specific overcurrent tripping execution strategy for the situation of over-capacity power consumption, and quickly responding to and removing the overload load based on real-time monitoring data;

[0019] According to the rated load of the equipment and the on-site environment, the safe load removal threshold P is preset. limit When the real-time monitored current value exceeds the set load threshold P limit When the overcurrent tripping operation is triggered, the control unit sends a tripping command to the relay to cut off the connection with the overloaded equipment, monitors the current after the cut-off in real time, and confirms that the overcurrent state has been released;

[0020] After cutting off the current, the system determines whether it can be reset according to the following formula:

[0021] P limit = k·T avg +N·σ

[0022] Among them, P limit is the safe load shedding threshold, T avg is the real-time monitoring value of the device temperature, σ is the standard deviation of the device temperature fluctuation, k and B are empirical evaluation parameters obtained through historical data optimization. If the judgment condition is met, you can prepare for reset to ensure that the device is within the safe operating temperature range.

[0023] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, wherein: the setting of the maximum load threshold includes identifying different types of users and electricity usage habits according to the differences in the on-site power usage environment, monitoring the power usage data of different areas in real time through data acquisition equipment, and collecting historical power usage records, peak power usage periods, and power usage fluctuation information;

[0024] The collected data is classified by features, the electricity consumption patterns of different user groups and regions are analyzed, and the appropriate maximum load threshold is dynamically calculated based on the electricity consumption scenarios and user behavior:

[0025] H max =Hmax=f(X)

[0026] Among them, H max is the maximum load threshold of a certain type of scenario, X is the environmental variable that affects the threshold, and the load threshold is regularly re-evaluated and adjusted based on real-time monitoring data.

[0027] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, wherein: the formulation of the load control strategy includes realizing the flexible load control function through multi-level power control, overcurrent tripping, and adaptive closing functions in different power usage scenarios, reasonably distinguishing the types of pulling and closing, and executing the strategy;

[0028] Based on the user's historical electricity consumption behavior, device type and environmental variables, multi-dimensional classification is carried out, and the current electricity consumption environment is judged in real time according to the input data. The classification includes: low-power and stable load demand is for residential scenarios; large fluctuations and peak loads are for commercial scenarios; high-power and periodic loads are for industrial scenarios;

[0029] Adjust the power supply strategy according to the classification results to form a multi-level power supply plan: Level 1 basic life: ensure continuous power supply for necessary equipment; Level 2 high power demand: high power equipment that can be powered is open during specific periods;

[0030] A threshold dynamic adjustment mechanism is established based on the historical data model. When the current exceeds the 95% percentile of the historical data, an alarm is triggered. A warning is issued at the moment overcurrent is detected, and a decision is made based on user behavior and device status whether to directly trip the circuit breaker or give the user a specific amount of time to adjust. After the load is reduced to a safe range, power supply is automatically restored through user operation confirmation and device intelligent judgment, thereby improving user experience.

[0031] As a preferred solution of the flexible load control technical method of the large current switch built-in electric energy meter described in the present invention, wherein: the establishment of a load control safety authentication mechanism includes dividing the load into four levels: emergency level, priority level, ordinary level and curtailable level according to the peak and valley time periods of the power grid and the user type;

[0032] When it is judged to be at an emergency level, real-time monitoring is carried out, and once the grid load exceeds the threshold, a reduction instruction is immediately executed;

[0033] When it is determined to be a priority, a time-of-use electricity price strategy will be implemented to guide users to use electricity reasonably while ensuring basic living needs;

[0034] When it is judged as ordinary level, a demand response mechanism is adopted to encourage users to reduce electricity consumption during peak hours of the power grid;

[0035] When it is judged to be a curtailable level, interruptible load control is implemented;

[0036] Adopting dual-channel communication mechanism, corresponding control instructions are issued according to the power grid status and user load level;

[0037] The instructions are encrypted using asymmetric encryption technology and transmitted through a secure channel. After the electric energy meter receives the instructions, it uses the private key to decrypt them. After verifying the legitimacy of the instructions, it executes the control operation. The execution results are encrypted and fed back to the control center, completing a security authentication process.

[0038] As a preferred solution of the flexible load control technology system of the large current switch built-in electric energy meter described in the present invention, it includes: a data acquisition module, a fuzzy logic control module, a load control execution module, a strategy formulation and optimization module, and a safety authentication and communication module;

[0039] The data acquisition module monitors and collects the user's current and voltage data in real time, uses high-precision sensors for sampling, and introduces a data filtering mechanism to smooth the signal, reduce noise interference, and ensure the accuracy and reliability of the data;

[0040] The fuzzy logic control module receives the processed current and voltage data, and judges and analyzes the current state according to the set fuzzy rules and membership functions to determine whether the load control operation needs to be performed;

[0041] The load control execution module implements specific load control operations, including overcurrent tripping, safe load removal, reset operations, etc., according to the judgment results of the fuzzy logic control module, to ensure the stability and safety of the power system;

[0042] The strategy formulation and optimization module dynamically sets the maximum load threshold based on real-time monitoring data and historical power consumption records, formulates a multi-level power control plan, and adjusts the power supply strategy according to the characteristics of the power consumption environment to form an optimal load control strategy;

[0043] The safety authentication and communication module establishes a load control safety authentication mechanism, issues corresponding control instructions according to the power grid status and user load level, and processes feedback of execution results.

[0044] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of a flexible load control technical method for an electric energy meter with a built-in large current switch are implemented.

[0045] A computer-readable storage medium stores a computer program thereon, characterized in that when the computer program is executed by a processor, the steps of a flexible load control technical method for an electric energy meter with a built-in large current switch are implemented.

[0046] Beneficial effects of the present invention: Through high-reliability anti-false operation control technology, the risk of false operation is reduced to ensure the safety of users and equipment. The new energy meter combined with fuzzy logic judgment can more accurately identify the overcurrent state, thereby effectively protecting the electrical equipment and reducing the incidence of power system failures. The load can be flexibly adjusted according to different power consumption scenarios and user needs, and personalized power consumption strategies can be formulated to improve the user's power consumption experience. The multi-level power control strategy is adopted to reasonably limit high-power power consumption while ensuring basic living electricity consumption, and effectively realize the dynamic management of power load. By implementing a flexible control strategy to ensure power consumption, the situation where the user's emergency equipment loses power due to full power outage is avoided, thereby significantly reducing customer complaints caused by power outages. Ensure that users can still enjoy continuous power supply in various power consumption environments. Through user interaction design, users are encouraged to participate in power consumption decisions. Notifying users of information about load changes in advance helps to enhance users' trust in the power supply system, and at the same time, improves user participation and forms a benign interaction. By using load control technology based on electricity meters, it is possible to more accurately monitor and manage the electricity consumption behavior of different users, conduct real-time monitoring and management of overload and wasteful electricity consumption, promote efficient use of resources, and reduce unnecessary energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0048] Figure 1 A schematic flow chart of a flexible load control technical method for an electric energy meter with a built-in large current switch provided in one embodiment of the present invention.

[0049] Figure 2 A schematic diagram of the working modules of a flexible load control technology system for an electric energy meter with a built-in large current switch provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0051] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0053] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0054] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Example 1, reference Figure 1 , which is the first embodiment of the present invention, and provides a flexible load control technology method for a large current switch built-in electric energy meter, including:

[0057] S1: Monitor current and voltage in real time, input the data into the fuzzy logic control system, formulate fuzzy rules, and judge the current state through fuzzy logic control.

[0058] Furthermore, the user's current and voltage data are monitored in real time, and high-precision sensors are used to sample the current and voltage. During the data collection process, the sampling frequency is set, and a data filtering mechanism is introduced to smooth the signal and reduce noise interference. The processed data is input into the fuzzy logic control system for subsequent status judgment and analysis.

[0059] It should be noted that, based on the current change rate, time slope and historical power consumption data, multiple fuzzy rules are established to determine whether the current exceeds the set threshold;

[0060] Define the input variables current change rate ΔI and voltage change rate ΔV, set the threshold range, and normalize the input value so that each input variable range is between [0,1];

[0061]

[0062] Among them, ΔI norm , ΔV norm are the normalized current change and voltage change, I min ,I max is the minimum and maximum value of the current change, V min 、V max is the minimum and maximum value of voltage variation;

[0063] Define the fuzzy set and give the membership function. Set three states: "low", "medium" and "high". The membership function can be a triangular or trapezoidal function. Design the fuzzy rules according to the combination of input variables:

[0064] If ΔI norm is low and ΔV norm is low, it is marked as "normal" state.

[0065] If ΔI norm is high and ΔV norm is high, it is marked as an "overcurrent" condition.

[0066] If ΔI norm is medium and ΔV norm If it is low, it is marked as "monitoring" state.

[0067] Based on the fuzzy results, the judgment is made according to the following formula:

[0068]

[0069] Among them, F is the judgment coefficient, which is used to judge whether the current reaches the overcurrent state, α and β are the adjustment coefficients, I current is the real-time current value, is the rate of change of current.

[0070] S2: Implement load safety removal and reset strategies for over-capacity power consumption scenarios and perform over-current tripping operations.

[0071] Furthermore, in response to the situation of over-capacity power consumption, a specific over-current tripping execution strategy is formulated to quickly respond and cut off the overload based on real-time monitoring data;

[0072] According to the rated load of the equipment and the on-site environment, the safe load removal threshold P is preset. limit When the real-time monitored current value exceeds the set load threshold P limit When the overcurrent tripping operation is triggered, the control unit sends a tripping command to the relay to cut off the connection with the overloaded equipment, monitors the current after the cut-off in real time, and confirms that the overcurrent state has been released;

[0073] After cutting off the current, the system determines whether it can be reset according to the following formula:

[0074] P limit = k·T avg +N·σ

[0075] Among them, P limit is the safe load shedding threshold, T avg is the real-time monitoring value of the device temperature, σ is the standard deviation of the device temperature fluctuation, k and N are empirical evaluation parameters obtained through historical data optimization. If the judgment condition is met, you can prepare for reset to ensure that the device is within the safe operating temperature range.

[0076] S3: Set the maximum load threshold according to the characteristics of different power consumption environments and formulate a load control strategy.

[0077] Furthermore, different types of users and electricity usage habits can be identified based on the differences in the on-site electricity usage environment. Through data collection equipment, electricity usage data in different areas can be monitored in real time to collect historical electricity usage records, peak electricity usage periods, and electricity usage fluctuation information;

[0078] The collected data is classified by features, the electricity consumption patterns of different user groups and regions are analyzed, and the appropriate maximum load threshold is dynamically calculated based on the electricity consumption scenarios and user behavior:

[0079] Hmax=f(X)

[0080] Among them, H max is the maximum load threshold of a certain type of scenario, X is the environmental variable that affects the threshold, and the load threshold is regularly re-evaluated and adjusted based on real-time monitoring data.

[0081] It should be noted that in different power usage scenarios, flexible load control functions are realized through multi-level power control, overcurrent tripping, and adaptive closing functions, and the types of pulling and closing are reasonably distinguished to implement strategies;

[0082] Based on the user's historical electricity consumption behavior, device type and environmental variables, multi-dimensional classification is carried out, and the current electricity consumption environment is judged in real time according to the input data. The classification includes: low-power and stable load demand is for residential scenarios; large fluctuations and peak loads are for commercial scenarios; high-power and periodic loads are for industrial scenarios;

[0083] Adjust the power supply strategy according to the classification results to form a multi-level power supply plan: Level 1 basic life: ensure continuous power supply for necessary equipment; Level 2 high power demand: high power equipment that can be powered is open during specific periods;

[0084] A dynamic threshold adjustment mechanism is established based on the historical data model. current When the 95% percentile of historical data is exceeded current >P 95％ , the over-current alarm is triggered and the circuit breaker enters the trip warning state.

[0085] Set the grace period for opening the switch, during which the user is prompted and the user's response is evaluated. When the overcurrent alarm is triggered: if the user does not respond within 5 seconds (no manual load adjustment), the switch is opened; if the user makes adjustments and reduces the current to the threshold (less than 90% of the quantile), the following situations can be used to judge when closing the switch:

[0086] If I current <P 90％ If the user confirms, the switch will be closed automatically; if the user does not confirm and the device status is stable, the switch will be closed automatically, otherwise the restricted status will be maintained. When the current is reduced to a safe operating range, the device status and user feedback need to be evaluated. When the load is reduced to a safe range: I current <P 安全 If the user confirms closing the circuit breaker, power supply will be automatically restored; if the user does not confirm but the equipment is in normal operation and there is no risk of overload, the system can automatically close the circuit breaker after 15 seconds.

[0087] S4: Implement a multi-level power control scheme and establish a load control safety authentication mechanism.

[0088] Furthermore, the load is divided into four levels: emergency, priority, ordinary and curtailable, according to the peak and valley periods of the power grid and the types of users;

[0089] When it is judged to be at an emergency level, real-time monitoring is carried out, and once the grid load exceeds the threshold, a reduction instruction is immediately executed;

[0090] When it is determined to be a priority, a time-of-use electricity price strategy will be implemented to guide users to use electricity reasonably while ensuring basic living needs;

[0091] When it is judged as ordinary level, a demand response mechanism is adopted to encourage users to reduce electricity consumption during peak hours of the power grid;

[0092] When it is judged to be a curtailable level, interruptible load control is implemented;

[0093] Adopting dual-channel communication mechanism, corresponding control instructions are issued according to the power grid status and user load level;

[0094] The instructions are encrypted using asymmetric encryption technology and transmitted through a secure channel. After the electric energy meter receives the instructions, it uses the private key to decrypt them. After verifying the legitimacy of the instructions, it executes the control operation. The execution results are encrypted and fed back to the control center, completing a security authentication process.

[0095] Embodiment 2, the second embodiment of the present invention, is different from the previous embodiment in that:

[0096] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0097] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0098] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0099] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0100] Example 3, reference Figure 2 , which is an embodiment of the present invention, provides a flexible load control technology system for a large current switch built-in electric energy meter, characterized by: comprising a data acquisition module 1, a fuzzy logic control module 2, a load control execution module 3, a strategy formulation and optimization module 4, and a security authentication and communication module 5;

[0101] Data acquisition module 1 monitors and collects the user's current and voltage data in real time, uses high-precision sensors for sampling, and introduces a data filtering mechanism to smooth the signal, reduce noise interference, and ensure the accuracy and reliability of the data;

[0102] The fuzzy logic control module 2 receives the processed current and voltage data, and judges and analyzes the current state according to the set fuzzy rules and membership functions to determine whether the load control operation needs to be performed;

[0103] The load control execution module 3 implements specific load control operations according to the judgment results of the fuzzy logic control module, including overcurrent tripping, safe load removal, reset operation, etc., to ensure the stability and safety of the power system;

[0104] Strategy formulation and optimization module 4, based on real-time monitoring data and historical power consumption records, dynamically sets the maximum load threshold, formulates a multi-level power control plan, and adjusts the power supply strategy according to the characteristics of the power consumption environment to form the optimal load control strategy;

[0105] The safety authentication and communication module 5 establishes a load control safety authentication mechanism, issues corresponding control instructions according to the power grid status and user load level, and processes the feedback of the execution results.

[0106] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A flexible load control technology method based on a large current switch built-in electric energy meter, characterized in that: include, Monitor current and voltage in real time and input data into fuzzy logic control system; Formulate fuzzy rules and judge the current state through fuzzy logic control; Implement load safety removal and reset strategies for over-capacity power consumption scenarios and perform over-current tripping operations; Set the maximum load threshold according to the characteristics of different power consumption environments and formulate load control strategies; Implement a multi-level power control scheme and establish a load control safety certification mechanism.

2. The flexible load control technology method of the electric energy meter with built-in large current switch according to claim 1 is characterized in that: The real-time monitoring of current and voltage includes real-time monitoring of the user's current and voltage data, using high-precision sensors to sample the current and voltage, setting the sampling frequency during data collection, introducing a data filtering mechanism to smooth the signal, reducing noise interference, and inputting the processed data into a fuzzy logic control system for subsequent status judgment and analysis.

3. The flexible load control technology method of the electric energy meter with built-in large current switch according to claim 2 is characterized in that: The formulating of fuzzy rules includes establishing multiple fuzzy rules for judging whether the current exceeds a set threshold value according to the current change rate, time slope and historical power consumption data; Define the input variables current change rate ΔI and voltage change rate ΔV, set the threshold range, normalize the input value so that each input variable range is between [0,1], define the fuzzy set and give the membership function; Based on the fuzzy results, the judgment is made according to the following formula: Among them, F is the judgment coefficient, which is used to judge whether the current reaches the overcurrent state, α and β are the adjustment coefficients, I current is the real-time current value, is the rate of change of current.

4. The flexible load control technology method of the electric energy meter with built-in large current switch as claimed in claim 3 is characterized by: The execution of the overcurrent tripping operation includes formulating a specific overcurrent tripping execution strategy for the overcapacity power consumption, and quickly responding and removing the overload load based on real-time monitoring data; According to the rated load of the equipment and the on-site environment, the safe load removal threshold P is preset. limit When the real-time monitored current value exceeds the set load threshold P limit When the overcurrent tripping operation is triggered, the control unit sends a tripping command to the relay to cut off the connection with the overloaded equipment, monitors the current after the cut-off in real time, and confirms that the overcurrent state has been released; After cutting off the current, the system determines whether it can be reset according to the following formula: P limit =k·T avg +N·s Among them, P limit is the safe load shedding threshold, T avg is the real-time monitoring value of the device temperature, σ is the standard deviation of the device temperature fluctuation, k and N are empirical evaluation parameters obtained through historical data optimization. If the judgment condition is met, you can prepare for reset to ensure that the device is within the safe operating temperature range.

5. The flexible load control technology method of the electric energy meter with built-in large current switch as claimed in claim 4 is characterized by: The setting of the maximum load threshold includes identifying different types of users and electricity usage habits according to the differences in the on-site electricity usage environment, monitoring electricity usage data in different areas in real time through data collection equipment, and collecting historical electricity usage records, peak electricity usage periods, and electricity usage fluctuation information; The collected data is classified by features, the electricity consumption patterns of different user groups and regions are analyzed, and the appropriate maximum load threshold is dynamically calculated based on the electricity consumption scenarios and user behavior: H max =f(X) Among them, H max is the maximum load threshold of a certain type of scenario, X is the environmental variable that affects the threshold, and the load threshold is regularly re-evaluated and adjusted based on real-time monitoring data.

6. The flexible load control technology method of the electric energy meter with built-in large current switch as claimed in claim 5 is characterized by: The formulation of load control strategies includes realizing flexible load control functions through multi-level power control, overcurrent tripping, and adaptive closing functions in different power usage scenarios, reasonably distinguishing the types of tripping and closing, and executing strategies; Based on the user's historical electricity consumption behavior, device type and environmental variables, multi-dimensional classification is carried out, and the current electricity consumption environment is judged in real time according to the input data. The classification includes: low-power and stable load demand is for residential scenarios; large fluctuations and peak loads are for commercial scenarios; high-power and periodic loads are for industrial scenarios; Adjust the power supply strategy according to the classification results to form a multi-level power supply plan: Level 1 basic life: ensure continuous power supply for necessary equipment; Level 2 high power demand: high power equipment that can be powered is open during specific periods; A threshold dynamic adjustment mechanism is established based on the historical data model. When the current exceeds the 95% percentile of the historical data, an alarm is triggered. A warning is issued at the moment overcurrent is detected, and a decision is made based on user behavior and device status whether to directly trip the circuit breaker or give the user a specific amount of time to adjust. After the load is reduced to a safe range, power supply is automatically restored through user operation confirmation and device intelligent judgment, thereby improving user experience.

7. The flexible load control technology method of the electric energy meter with built-in large current switch according to claim 6 is characterized in that: The establishment of a load control safety authentication mechanism includes classifying the load into four levels: emergency level, priority level, ordinary level and curtailable level according to the peak and valley time periods of the power grid and the user types; When it is judged to be at an emergency level, real-time monitoring is carried out, and once the grid load exceeds the threshold, a reduction instruction is immediately executed; When it is determined to be a priority, a time-of-use electricity price strategy will be implemented to guide users to use electricity reasonably while ensuring basic living needs; When it is judged as ordinary level, a demand response mechanism is adopted to encourage users to reduce electricity consumption during peak hours of the power grid; When it is judged to be a curtailable level, interruptible load control is implemented; Adopting dual-channel communication mechanism, corresponding control instructions are issued according to the power grid status and user load level; The instructions are encrypted using asymmetric encryption technology and transmitted through a secure channel. After the electric energy meter receives the instructions, it uses the private key to decrypt them. After verifying the legitimacy of the instructions, it executes the control operation. The execution results are encrypted and fed back to the control center, completing a security authentication process.

8. A system using the flexible load control technology method of the electric energy meter with built-in large current switch as claimed in any one of claims 1 to 7, characterized in that: It includes data acquisition module, fuzzy logic control module, load control execution module, strategy formulation and optimization module, safety authentication and communication module; The data acquisition module monitors and collects the user's current and voltage data in real time, uses high-precision sensors for sampling, and introduces a data filtering mechanism to smooth the signal, reduce noise interference, and ensure the accuracy and reliability of the data; The fuzzy logic control module receives the processed current and voltage data, and judges and analyzes the current state according to the set fuzzy rules and membership functions to determine whether the load control operation needs to be performed; The load control execution module implements specific load control operations, including overcurrent tripping, safe load removal, reset operations, etc., according to the judgment results of the fuzzy logic control module, to ensure the stability and safety of the power system; The strategy formulation and optimization module dynamically sets the maximum load threshold based on real-time monitoring data and historical power consumption records, formulates a multi-level power control plan, and adjusts the power supply strategy according to the characteristics of the power consumption environment to form an optimal load control strategy; The safety authentication and communication module establishes a load control safety authentication mechanism, issues corresponding control instructions according to the power grid status and user load level, and processes feedback of execution results.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. 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 7 are implemented.

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