A power supply control system and method

Abstract

The application provides a power supply control system and method, and relates to the technical field of power consumption billing control. The system comprises: a cloud device, configured to generate corresponding hierarchical reduction control instructions according to user account balance information and a preset hierarchical arrears control strategy; an edge device, in communication connection with the cloud device and an execution device respectively; and the execution device, comprising a plurality of power distribution circuits, each of which is connected to a user power distribution node; wherein the execution device is configured to control each power distribution circuit to switch and combine working states step by step according to the hierarchical reduction control instructions, so as to perform hierarchical reduction power supply on the user power distribution node through each power distribution circuit. The user's arrears are classified by the cloud, and the edge device controls the execution device to perform hierarchical reduction power supply on the user, thereby avoiding direct power cut of the user due to arrears, improving user experience and preventing electric arc hazards caused by power cut.

Description

Technical Field

[0001] This application relates to the field of electricity billing and control technology, and in particular to a power supply control system and method. Background Technology

[0002] With the deepening of smart grid construction, prepaid / fee control systems have become an important tool for electricity marketing management. For large-capacity users with a rated current greater than 60A, the electricity meter cannot have a relay with sufficient capacity built in, so an external circuit breaker solution must be adopted.

[0003] Currently, conventional external circuit breaker solutions still employ the traditional physical disconnection method for the main circuit. Their control logic directly disconnects the main circuit upon payment arrears. However, this control logic has several serious flaws. For example, this one-size-fits-all control logic causes critical loads such as lighting, refrigerators, and internet to be immediately and simultaneously cut off upon payment arrears, making it difficult for users to pay online and resulting in a very poor user experience. More importantly, high-power disconnection can generate electric arcs at the contact points of the sectionalizing equipment, leading to contact erosion, shortened equipment lifespan, and a potential electrical fire hazard. Summary of the Invention

[0004] The main purpose of this application is to provide a power supply control system and method, which aims to solve the technical problem of how to avoid electric arcs caused by power outages triggered by users' sudden non-payment.

[0005] To achieve the above objectives, this application provides a power supply control system, the power supply control system comprising: The cloud device is used to generate corresponding tiered credit limit reduction control instructions based on the user's account balance information and the preset tiered arrears control strategy. The edge device is communicatively connected to both the cloud device and the execution device. The execution terminal device includes several power distribution loops, each of which is connected to a user power distribution node; The execution device is used to control each of the power distribution circuits to switch their combined working states step by step according to the graded derating control command, so as to provide graded derating power to the user power distribution node through each of the power distribution circuits.

[0006] Optionally, the power distribution loop includes: Power resistors are connected to the power supply circuit and the user power distribution node, respectively. The switching device is connected in parallel with the power resistor; The execution device also includes: The first controller is connected to the control terminals of the edge device and each of the switching devices, and is used to control each switching device in each of the power distribution loops to switch to the corresponding switching state according to the graded derating control command.

[0007] Optionally, the execution device further includes: An intermediate relay is connected to both the first controller and the control terminal of the power circuit. A status detection module is set between each of the power distribution loops and the user power distribution node, and is connected to the first controller, for detecting the switching status of each of the switching devices; The first controller is further configured to control the intermediate relay to cut off the power supply to the power circuit when it is determined that the switching state of each of the switching devices does not match the ideal switching state corresponding to the graded derating control command.

[0008] Optionally, the state detection module includes: A plurality of sampling resistors, the number of which is the same as the number of switching devices, wherein each sampling resistor is connected in series between a corresponding switching device and the user power distribution node; A plurality of differential amplifiers, the number of which is the same as the number of sampling resistors, wherein the first input terminal of each differential amplifier is connected to the first terminal of a corresponding sampling resistor, and the second input terminal is connected to the second terminal of a corresponding sampling resistor; the output terminal of each differential amplifier is connected to the first controller.

[0009] Optionally, the execution device further includes: A temperature acquisition module is attached to each of the power distribution circuits and connected to the first controller to acquire the real-time temperature of each of the power distribution circuits. Air-cooled modules are installed at each of the aforementioned power distribution circuits; The first controller is connected to the temperature acquisition module and the air-cooling module respectively, and is also used to control the air output power of the air-cooling module according to the real-time temperature of each power distribution circuit.

[0010] Optionally, each of the power distribution circuits is also attached to the metal casing of the actuator via a thermally conductive medium, and convection heat dissipation holes are provided at the corresponding attachment positions.

[0011] Optionally, the edge device includes: The communication module is connected to the cloud device. The metering sampling module is used to collect users' electricity consumption data; The second controller is connected to the communication module, the metering and sampling module, and the execution terminal device, respectively. The second controller is used to upload the power consumption data to the cloud device through the communication module; The cloud device is also used to determine the user's account balance information based on the electricity consumption data.

[0012] Optionally, the user power distribution node includes a power supply backup circuit node and a conventional load circuit node; The power supply circuit node is independently connected to the power supply circuit; The execution device is also used to control the power distribution circuits to switch their combined working states step by step according to the power distribution level, based on the graded derating control command, and to perform graded derating power supply to the conventional load circuit nodes.

[0013] Furthermore, to achieve the above objectives, this application also provides a power supply control method applied to the power supply control system described above, wherein the steps of the power supply control method include: The corresponding power allocation level is determined based on the user's account balance information; Based on the preset tiered arrears control strategy and the power allocation level, a corresponding tiered reduction control instruction is generated. The tiered derating control command is transmitted from the edge device to the execution device, so that the execution device can perform tiered derating power supply to the user's power distribution node based on the tiered derating control command.

[0014] Optionally, the step of determining the corresponding power allocation level based on the user's account balance information includes: Based on the account balance information, determine the duration of arrears when the user's account balance is below a preset arrears threshold; The power allocation level is determined based on a preset overdue payment level time mapping table and the overdue payment duration.

[0015] Optionally, the power supply control method further includes the following steps: The user's electricity consumption data is obtained through the edge device; Based on the electricity consumption data, the account balance information is determined.

[0016] Optionally, the power supply control method further includes the following steps: Upon detecting that the account balance information has changed to a non-arrears status, a corresponding tiered recovery control instruction is generated; The tiered recovery control command is transmitted from the edge device to the execution device, so that the execution device can perform tiered recovery of power supply to the user power distribution node based on the tiered recovery control command.

[0017] Furthermore, to achieve the above objectives, this application also provides a power supply control method applied to the power supply control system described above, wherein the steps of the power supply control method include: The edge device receives a tiered reduction control instruction sent by the cloud device. The tiered reduction control instruction is generated by the cloud device based on a preset tiered arrears control strategy and the user's account balance information. According to the graded derating control command, the combined working state of each power distribution circuit is switched step by step so as to provide graded derating power supply to the user power distribution node through each power distribution circuit.

[0018] Optionally, the power supply control method further includes the following steps: Detect whether the current combined operating state of each power distribution loop matches the ideal combined operating state corresponding to the graded derating control command; In the event of a mismatch, the control power circuit stops supplying power to each of the power distribution circuits and reports a first fault to the cloud device via the edge device.

[0019] Optionally, the power supply control method further includes the following steps: Collect the real-time temperature of each of the power distribution circuits; When the real-time temperature is higher than the first preset temperature but lower than the second preset temperature, the air output power of the air-cooling module is controlled based on the real-time temperature so that the real-time temperature is within the preset temperature range. Alternatively, if the real-time temperature is lower than the first preset temperature, the air-cooling module may be controlled to stop working. Alternatively, if the real-time temperature is higher than the second preset temperature, the control power circuit stops supplying power to each of the power distribution circuits, and reports the second fault information to the cloud device through the edge device.

[0020] Furthermore, to achieve the above objectives, this application also provides a power supply control method applied to the power supply control system described above, wherein the steps of the power supply control method include: Detect users' electricity consumption data; In the event of a communication interruption with the cloud device, the user's current account balance information can be determined based on the electricity consumption data; Based on the account balance information, the corresponding power allocation level is determined; Based on the preset tiered arrears control strategy and the power allocation level, a corresponding tiered reduction control instruction is generated. The graded derating control command is transmitted to the execution device so that the execution device can perform graded derating power supply to the user power distribution node based on the graded derating control command.

[0021] This application provides a power supply control system and method. The power supply control system includes: a cloud device for generating corresponding tiered de-rating control instructions based on user account balance information and a preset tiered de-rating control strategy; an edge device communicatively connected to both the cloud device and the execution device; the execution device includes several power distribution loops, each connected to a user's power distribution node; wherein the execution device is used to control each power distribution loop to switch its combined operating state step by step according to the tiered de-rating control instructions, so as to provide tiered de-rating power supply to the user's power distribution node through each power distribution loop. By tiering user de-rating through the cloud and controlling the execution device through the edge device to provide tiered de-rating power to users, the system avoids directly cutting off power to users due to de-rating, improves user experience, and prevents the risk of arcing caused by power outages. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of the first embodiment of the power supply control system of this application; Figure 2 A structural schematic diagram of the second embodiment of the power supply control system of this application; Figure 3 This is a schematic diagram of the power distribution circuit in the second embodiment of the power supply control system of this application; Figure 4 This is a schematic diagram of the state detection module in the second embodiment of the power supply control system of this application; Figure 5 A flowchart illustrating the first embodiment of the power supply control method of this application; Figure 6 A flowchart illustrating a second embodiment of the first power supply control method of this application; Figure 7 A flowchart illustrating the first embodiment of the second power supply control method of this application; Figure 8 A flowchart illustrating the second embodiment of the second power supply control method of this application; Figure 9This is a flowchart illustrating the first embodiment of the third power supply control method of this application.

[0025] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0027] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0028] This application presents a power supply control system according to a first embodiment. Please refer to [link / reference]. Figure 1 The power supply control system includes: The cloud device 10 is used to generate corresponding tiered credit limit reduction control instructions based on the user's account balance information and the preset tiered arrears control strategy. Edge device 20 is communicatively connected to cloud device 10 and execution device 30, respectively; The execution terminal device 30 includes a plurality of power distribution loops 31, each of which is connected to a user power distribution node; The execution device 30 is used to control each of the power distribution circuits 31 to switch their combined working states step by step according to the graded derating control command, so as to provide graded derating power to the user power distribution node through each of the power distribution circuits 31.

[0029] It should be understood that, in this embodiment, cloud device 10 refers to a server or server cluster deployed in the cloud, which has data storage, computing and communication capabilities, and is used to execute the decision-making and instruction issuance of the fee control strategy; edge device 20 refers to an intermediate layer device deployed between the user side and the cloud, which has data acquisition, instruction conversion and local execution capabilities, and can specifically be a smart meter; execution device 30 refers to an execution device deployed on the user's power distribution side, including a graded circuit breaker, used to receive and execute the graded derating control instructions issued by cloud device 10.

[0030] It should be noted that, in this embodiment, the execution device 30 may contain multiple power distribution loops 31. The power distribution loop 31 refers to the power supply path connected between the power supply loop 40 and the user power distribution node. Each power distribution loop 31 can independently control its power supply state, which may mainly include normal power output state and power limited output state. The user power distribution node refers to the node in the user-side power distribution system, which is used to connect various electrical loads.

[0031] It is worth noting that in this embodiment, the combined working state refers to the overall state combination composed of the power transmission states of multiple power distribution circuits 31; the graded derating power supply refers to the process of gradually reducing the power transmitted to the user's power distribution node according to the preset power distribution level, rather than cutting it off all at once; the preset graded arrears control strategy refers to the pre-set control strategy that corresponds to different derating levels according to different arrears levels.

[0032] It is easy to understand that in this embodiment, the cloud device 10 can confirm the current user's arrears based on the user's account balance information, determine the arrears level corresponding to the user's current arrears based on a preset tiered arrears control strategy, map the arrears level to the corresponding power allocation level, and generate a tiered derating control instruction corresponding to the power allocation level. This instruction is relayed to the execution device 30 through the edge device 20. After receiving the tiered derating control instruction, the execution device 30 does not directly cut off all power supply to the user's power distribution node, but controls each power allocation loop 31 to gradually switch its corresponding power transmission state according to the power allocation level indicated by the tiered derating control instruction, thereby realizing the step-by-step switching of the overall combined working state of each power allocation loop 31. In the above process, since the power obtained by the user's power distribution node is constituted by the sum of the power provided by each power distribution circuit 31, by gradually switching the power transmission state of each power distribution circuit 31 and reducing the output power of that circuit, the total power provided by each power distribution circuit 31 to the user's power distribution node can be reduced step by step. Ultimately, the power supply to the user's power distribution node can be reduced in stages by gradually changing the combined operating state of each power distribution circuit 31. For example, when the user is in a state of slight arrears, only the power supply to some non-critical circuits is cut off; when the user is in a state of moderate arrears, the power supply to more circuits is cut off; and when the user is in a state of severe arrears, the power supply to all circuits is cut off.

[0033] In specific implementation, assume that the execution device 30 includes three power distribution loops 31, denoted as loop A, loop B, and loop C respectively. Initially, all three loops are in normal power output state, and the current combined working state is "fully on" (all three loops output full power, denoted as state S0). When the user begins to default on payment, the execution device 30 can perform a first-level derating, switching loop A from normal power output state to power-limited output state. At this time, the combined working state becomes "loop A limited, loop B on, loop C on" (denoted as state S1). When the user's default becomes more serious, a power distribution level change occurs, and the execution device 30 performs a second-level derating, switching loop B to power-limited output state. At this time, the combined working state becomes "loop A limited, loop B limited, loop C on" (denoted as state S2). When the user's default becomes even more serious, another power distribution level change occurs, and the execution device 30 performs a third-level derating, switching loop C to power-limited output state. At this time, the combined working state becomes "fully limited" (denoted as state S3).

[0034] Based on the tiered power reduction method provided in this embodiment for user arrears scenarios, refined management of user power supply is achieved. This not only achieves the purpose of urging payment of arrears (some non-essential electrical loads cannot be used due to power limits), but also ensures the user's basic power needs (the power after the limit can still ensure the normal operation of necessary electrical loads, such as lighting and communication loads), avoiding the deterioration of user experience and safety hazards caused by sudden power outages to the entire household.

[0035] This application provides a power supply control system, comprising: a cloud device for generating corresponding tiered debit control commands based on user account balance information and a preset tiered debit control strategy; and an edge device communicatively connected to both the cloud device and the execution device. The execution device includes several power distribution loops, each connected to a user's power distribution node. The execution device controls each power distribution loop to switch its combined operating state sequentially according to the tiered debit control commands, thereby providing tiered debit power to the user's power distribution node through each power distribution loop. By tiering user debit status through the cloud and controlling the execution device through the edge device to provide tiered debit power, the system avoids directly cutting off power to users due to debit, improves user experience, and prevents the risk of arcing caused by power outages.

[0036] Based on the first embodiment of the power supply control system of this application, in the second embodiment of the power supply control system of this application, the contents that are the same as or similar to those in the first embodiment of the power supply control system described above can be referred to the above description and will not be repeated hereafter. Based on this, please refer to... Figure 2 , Figure 3 as well as Figure 4 The power distribution circuit 31 includes: The power resistor RL is connected to the power circuit 40 and the user power distribution node, respectively. The switching device Q0 is connected in parallel with the power resistor RL; The execution device 30 also includes: The first controller 32 is connected to the control terminals of the edge device 20 and each of the switching devices Q0, and is used to control each switching device Q0 in each of the power distribution circuits 31 to switch to the corresponding switching state according to the graded derating control command.

[0037] It should be noted that in this embodiment, the switching device Q0 is an electronic component whose on or off state can be changed by a control signal. Common switching devices Q0 include MOSFETs, IGBTs, etc.; the power resistor RL is a resistor element that can withstand a large power and is used for current limiting and energy consumption in the circuit; the first controller 32 is a microcontroller, which can be composed of a control chip and several driver chips. Figure 2 (Not shown in the diagram), where the control chip has several I / O ports, communication interfaces, etc. Each I / O port can be connected to the control terminal of a corresponding switching device Q0 through a driver chip, and the driver chip provides driving capability for each I / O port. The control chip can respond to the graded derating control command and output the corresponding control signal through each I / O port to control each driver chip to drive at least one of the corresponding switching devices Q0 to gradually change the switching state.

[0038] As is readily understood, in this embodiment, each power distribution loop 31 is composed of a power resistor RL connected in parallel with a switching device Q0. When the switching device Q0 is in the on state, due to its extremely low on-resistance, almost all the current flows through the branch where the switching device Q0 is located, and the power resistor RL is short-circuited. At this time, the power distribution loop 31 is connected to the user's power distribution node with extremely low impedance, and the load can obtain almost the full power supply. When the switching device Q0 is in the off state, the current cannot flow through the branch where the switching device Q0 is located and is forced to flow through the branch where the parallel power resistor RL is located. At this time, the power distribution loop 31 is connected to the user's power distribution node with the resistance value of the power resistor RL, the loop impedance increases significantly, and the current flowing through the load decreases significantly, thereby reducing the power supply to the loop. According to the graded derating control command received from the edge device 20, the first controller 32 sequentially outputs the corresponding drive signal to the control terminal of each switching device Q0, gradually controlling each switching device Q0 to switch to the target switching state, thereby gradually reducing the power provided by each power distribution circuit 31 to the user power distribution node, and finally realizing graded derating power supply to the user power distribution node.

[0039] In this way, the execution device 30 can independently control the power supply of each power distribution circuit 31 by changing the switching state of the switching device Q0 without cutting off the circuit, thereby avoiding the arcing problem caused by the huge potential difference formed when the traditional mechanical contacts are disconnected.

[0040] It is worth noting that, in this embodiment, the design requires that the residual power of the load connected to the user's power distribution node does not exceed 5% of its rated power after the switching device Q0 is turned off. The relationship between the resistance value of the power resistor RL and the rated power of the load connected to the user's power distribution node is as follows: ; in, Let RL be the resistance value of the power resistor; The voltage (220V) supplied to power supply circuit 40. This is the rated power of the load.

[0041] In one scenario, if the actuator 30 (circuit breaker) has three independent outputs, connected to a high-power kitchen appliance, a heating device, and an electric water heater, each a 3kW load with a resistance of 16.1Ω, and the parallel power resistor RL has a resistance of 2.2kΩ, then after the switching device Q0 is turned off, the current in the power return module should be 0.10A, and the power corresponding to the residual load current should be 0.16W. The continuous power dissipation of the parallel power resistor RL is 22W. To avoid overheating caused by all the current flowing through the power resistor RL after the switching device Q0 is turned off, a 50W rated power resistor should be selected. Therefore, a 2.2kΩ / 25W power resistor RL can be chosen.

[0042] In another scenario, if the switching device Q0 uses a MOSFET, the drain-source breakdown voltage and drain current need to be considered during selection. If the load is designed for 3kW, the rated load current is approximately 13.6A. Based on this, to allow sufficient safety margin, a MOSFET with a continuous drain current of 30A can be selected. In this case, the peak value of the 220V AC is approximately 310V. Considering grid fluctuations (±20%) and turn-off spikes, a device with a drain-source breakdown voltage of 600V and an on-resistance not exceeding 0.1Ω can be selected. The switching device Q0 can be a 600V / 30A / 0.099Ω model using a TO-247 package.

[0043] Furthermore, in this embodiment, the execution terminal device 30 further includes: Intermediate relay 33 is connected to the control terminal of the first controller 32 and the power circuit 40, respectively; The status detection module 34 is disposed between each of the power distribution circuits 31 and the user power distribution node, and is connected to the first controller 32, for detecting the switching status of each of the switching devices Q0; The first controller 32 is further configured to control the intermediate relay 33 to cut off the power supply to the power circuit 40 when it is determined that the switching state of each of the switching devices Q0 does not match the ideal switching state corresponding to the graded derating control command.

[0044] It should be noted that, in this embodiment, the intermediate relay 33 refers to an electromagnetic relay installed inside the execution device 30. Its coil is driven by the control signal of the first controller 32, and its contacts are connected in series on the power supply line of the power circuit 40. It is used to trigger the power circuit 40 to cut off the power supply in abnormal conditions. The status detection module 34 refers to a detection circuit or detection device used to detect the actual switching status of the switching device Q0 in each power distribution circuit 31. The ideal switching status refers to the switching status that each switching device Q0 should be in under ideal conditions as required by the graded derating control command.

[0045] It is easy to understand that in this embodiment, the status detection module 34 can detect the actual switching status of the switching device Q0 in each power distribution loop 31 in real time and feed the detection results back to the first controller 32. The first controller 32 compares the detected actual switching status with the ideal switching status required by the graded derating control command. If the actual switching status is consistent with the ideal switching status, it means that the execution device 30 has correctly executed the graded derating control command, and the system can continue to operate normally. If the actual switching status is inconsistent with the ideal switching status, it means that there may be a fault in the switching device Q0 (e.g., MOSFET short-circuit failure or open-circuit failure). At this time, the first controller 32 will control the intermediate relay 33 to operate and cut off the power supply to the power circuit 40 to prevent safety accidents caused by abnormal power supply due to the fault in the switching device Q0 (e.g., the circuit that should be cut off is not cut off and continues to supply power to the user's power distribution node, thereby causing a fire). At the same time, the first controller 32 can also report the corresponding fault information to the cloud device 10 through the edge device 20, informing the staff at the cloud device 10 that there is a fault in the switching device Q0, so that the maintenance personnel can handle it in time.

[0046] Furthermore, in this embodiment, the state detection module 34 includes: Several sampling resistors Rc, the number of which is the same as the number of switching devices Q0, and each sampling resistor Rc is connected in series between a corresponding switching device Q0 and the user power distribution node; A plurality of differential amplifiers Ua, the number of which is the same as the number of sampling resistors Rc, wherein the first input terminal of each differential amplifier Ua is connected to the first terminal of a corresponding sampling resistor Rc, and the second input terminal is connected to the second terminal of a corresponding sampling resistor Rc; the output terminal of each differential amplifier Ua is connected to the first controller 32.

[0047] It should be noted that, in this embodiment, the sampling resistor Rc refers to a precision resistor element connected in series in a corresponding power distribution circuit 31 for detecting the current of that power circuit. Its resistance value is typically in the milliohm range to ensure that the voltage drop across it is small during normal operation and does not affect the normal operation of the circuit. The differential amplifier Ua refers to an amplifier used to amplify the weak voltage formed between the two ends of the sampling resistor Rc, and its output signal is acquired by the analog-to-digital converter of the first controller 32. The first input terminal and the second input terminal refer to the positive input terminal and the inverting input terminal of the differential amplifier Ua, respectively.

[0048] As is readily understood, in this embodiment, each power distribution loop 31 is connected in series with a sampling resistor Rc to detect the magnitude of the current in that power distribution loop 31. Since the on and off states of the switching device Q0 directly affect the magnitude of the current flowing through the power distribution loop 31, the voltage across the sampling resistor Rc is used to represent the current flowing through the power distribution loop 31, thereby indirectly determining the actual switching state of the switching device Q0.

[0049] Specifically, when the switching device Q0 is on, the impedance of the power distribution circuit 31 is very small, resulting in a large current and a relatively high voltage drop across the series sampling resistor Rc. When the switching device Q0 is off, the impedance of the power distribution circuit 31 increases (current flows through the power resistor RL), the current decreases significantly, and the voltage drop across the series sampling resistor Rc decreases significantly. The differential amplifier Ua amplifies the weak voltage signal (voltage drop) across the sampling resistor Rc and outputs it to the analog-to-digital converter input pin of the first controller 32. The first controller 32 can obtain the magnitude of the current formed in the power distribution circuit 31 by reading the sampled value from the analog-to-digital converter input pin, thereby indirectly determining the actual switching state of the switching device Q0. This detection method is direct, accurate, and unaffected by changes in the user-side load.

[0050] Specifically, such as Figure 4As shown, the differential amplifier Ua can be composed of a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a first operational amplifier, and a feedback resistor. Specifically, the positive input terminal of the first operational amplifier is connected to the first terminal of the first resistor and the first terminal of the second resistor; the inverting input terminal of the first operational amplifier is connected to the first terminal of the third resistor and the first terminal of the feedback resistor; the output terminal of the first operational amplifier is connected to the first terminal of the fourth resistor and the second terminal of the feedback resistor; the second terminal of the first resistor is connected to the first terminal of the sampling resistor; the second terminal of the second resistor is grounded; the second terminal of the third resistor is connected to the second terminal of the sampling resistor; the second terminal of the fourth resistor is connected to the first controller and the first terminal of the first capacitor; and the second terminal of the first capacitor is grounded.

[0051] Furthermore, in this embodiment, the execution terminal device 30 further includes: Temperature acquisition module 35 is attached to each of the power distribution circuits 31 and connected to the first controller 32, and is used to acquire the real-time temperature of each of the power distribution circuits 31. Air-cooled module 36 is disposed at each of the power distribution circuits 31; The first controller 32 is connected to the temperature acquisition module 35 and the air-cooling module 36 respectively, and is also used to control the air output power of the air-cooling module 36 according to the real-time temperature of each power distribution circuit 31.

[0052] It should be noted that, in this embodiment, the temperature acquisition module 35 refers to the temperature sensor and its associated circuitry used to acquire the temperature of each power distribution loop 31, specifically a thermistor mounted on the surface of the power resistor RL of each power distribution loop 31; the air-cooling module 36 refers to a device used for forced air cooling of the power distribution loop 31, specifically a miniature axial fan. The output air power refers to the power of the airflow output by the air-cooling module 36, which is related to the fan speed. The output air power can be controlled by adjusting the fan's power supply voltage or the duty cycle of the pulse width modulation signal provided by the first controller 32.

[0053] As is readily understood, in this embodiment, the temperature acquisition module 35 is attached to the surface of the power resistor RL of each power distribution circuit 31, acquiring the temperature of the power resistor RL in real time and transmitting the temperature signal to the first controller 32. Based on the acquired real-time temperature, the first controller 32 sends a control signal to the air-cooling module 36 according to a preset temperature control strategy to adjust its airflow power. For example, when the temperature is low, the airflow power of the air-cooling module 36 can be reduced or it can be stopped to save energy and reduce noise; when the temperature rises to a certain level, the airflow power of the air-cooling module 36 is increased to enhance heat dissipation; when the temperature exceeds a safety threshold, a protection action is triggered (e.g., power cut-off). Through the temperature control method provided above, it can be ensured that the power resistor RL always operates within a safe temperature range, guaranteeing both the safe operation of the equipment and the optimized management of heat dissipation energy consumption.

[0054] In specific implementation, when the real-time temperature of each power distribution circuit 31 is below 60℃, the first controller 32 can control the fan to stop running; when the real-time temperature of each power distribution circuit 31 is between 60℃ and 85℃, the first controller 32 can control the fan to run at a low speed with a duty cycle of 30%-50%; when the real-time temperature of each power distribution circuit 31 is between 85℃ and 110℃, the fan runs at full speed with a duty cycle of 100%, and the first controller 32 simultaneously sends a high-temperature alarm to the cloud device 10 through the edge device 20; when the real-time temperature of the power distribution circuit 31 is not lower than 110℃, the first controller 32 can trigger the intermediate relay 33 to indirectly trigger the hardware protection trip.

[0055] Furthermore, in this embodiment, each of the power distribution circuits 31 is also attached to the metal casing of the execution device 30 via a thermally conductive medium, and convection heat dissipation holes are provided at the corresponding attachment positions.

[0056] It should be noted that, in this embodiment, the thermally conductive medium refers to the thermally conductive material filled between the power distribution circuit 31 (specifically the power resistor RL) and the metal casing of the execution device 30, used to conduct the heat generated by the power resistor RL to the metal casing; the metal casing refers to the casing of the execution device 30, which is made of a metal material with good thermal conductivity (such as aluminum alloy); the convection heat dissipation hole refers to the through hole opened on the metal casing, used to form an air convection channel to assist in heat dissipation.

[0057] As is readily understood, in this embodiment, the power resistors RL in each power distribution circuit 31 are tightly attached to the metal casing of the actuator 30 via a thermally conductive medium (e.g., thermal grease). The heat generated by the power resistors RL during operation is first conducted to the metal casing via the thermally conductive medium, and then dissipated by the metal casing through convection and radiation with the surrounding air. Simultaneously, convection ventilation holes are provided on the metal casing corresponding to the attachment positions of the power resistors RL, further enhancing the heat dissipation effect through natural air convection.

[0058] Based on the aforementioned passive heat dissipation structure, no additional energy is required, offering advantages such as high reliability, no noise, and no extra energy consumption. Through the synergistic effect of the thermally conductive medium, the metal casing, and the convection ventilation holes, a first-level passive heat dissipation protection is formed, effectively controlling the temperature of the power resistor RL within a safe range under normal operating conditions.

[0059] Furthermore, in this embodiment, the edge device 20 includes: Communication module 21 is communicatively connected to the cloud device 10; The metering sampling module 22 is used to collect users' electricity consumption data; The second controller 23 is connected to the communication module 21, the metering and sampling module 22 and the execution terminal device 30 respectively; The second controller 23 is used to upload the power consumption data to the cloud device 10 through the communication module 21; The cloud device 10 is also used to determine the user's account balance information based on the electricity consumption data.

[0060] It should be noted that, in this embodiment, the communication module 21 refers to the module set inside the edge device 20 for data communication with the cloud device 10, and can specifically adopt communication methods such as 4G, 5G, power line carrier, RS485, etc.; the metering sampling module 22 refers to the module used to collect user electricity consumption data, and is used to collect electricity consumption data such as voltage, current, and power on the user's incoming line side in real time; the second controller 23 refers to the microcontroller set inside the edge device 20, and is used to perform functions such as data acquisition, instruction conversion, and local fee control logic judgment; electricity consumption data refers to data related to user electricity consumption, including voltage, current, power, power factor, and cumulative electricity consumption.

[0061] It is easy to understand that in this embodiment, the edge device 20 (smart meter) can collect the user's electricity consumption data in real time through its metering sampling module 22. After the second controller 23 obtains this electricity consumption data, it can upload the electricity consumption data to the cloud device 10 through the communication module 21, so that the cloud device 10 can perform billing processing and account balance management based on the user's electricity consumption data.

[0062] It is worth noting that, in this embodiment, the edge device 20 may also be equipped with a storage module (not shown in the figure) connected to the second controller 23. This storage module stores the aforementioned electricity consumption data, the preset tiered arrears control strategy designed at the cloud device 10, and the preset electricity pricing strategy (e.g., tiered pricing, peak-valley pricing, etc.) for the second controller 23 to access. In this case, the second controller 23 can directly determine the user's account balance information based on the locally stored electricity consumption data and electricity pricing strategy, and autonomously generate corresponding tiered reduction control instructions based on this account balance information and the preset tiered arrears control strategy. As an example, if an interruption is detected between the communication module 21 and the cloud device 10, the second controller 23 can autonomously generate tiered reduction control instructions based on the above method and send them to the execution device 30 to directly execute tiered reduction power supply to the user's power distribution node. After communication between the communication module 21 and the cloud device 10 is restored, the account balance information generated during the communication interruption is uploaded to the cloud device 10 for updating.

[0063] Furthermore, in this embodiment, the user power distribution node includes a power supply backup circuit node and a conventional load circuit node; The power supply circuit node is independently connected to the power supply circuit 40; The execution device 30 is also used to control each of the power distribution circuits 31 to switch the combined working state step by step according to the power distribution level, based on the graded derating control command, and to perform graded derating power supply to the conventional load circuit nodes.

[0064] It should be noted that, in this embodiment, the power supply backup circuit node refers to the power distribution node that connects critical loads (such as lighting circuits, cooling equipment circuits, and communication network equipment circuits). This node maintains power supply in any arrears state and does not participate in the tiered derating control. The regular load circuit node refers to the power distribution node that connects regular loads (such as high-power kitchen appliances, heating equipment, electric water heaters, etc.). This node participates in the tiered derating control.

[0065] As is readily understood, in this embodiment, the user power distribution node is divided into a power supply backup circuit node and a regular load circuit node. The power supply backup circuit node is independently connected to the power supply circuit 40, without passing through the graded power regulation unit of the execution device 30. Therefore, regardless of the user's arrears status, the loads connected to the power supply backup circuit node (e.g., lighting, refrigerators, network equipment) always receive power to ensure the user's basic living needs. The regular load circuit node, on the other hand, is connected to the power supply circuit 40 through various power distribution circuits 31 of the execution device 30. When a user incurs arrears, the execution device 30, according to the graded derating control command, switches the combined operating states of each power distribution circuit 31 step by step according to the power distribution level, thereby providing graded derating power to the regular load circuit node.

[0066] Based on the above differentiated power supply strategy, the basic power needs of users (lighting, cooling, heating, communication, etc.) are guaranteed, while power supply is restricted for users in arrears (restricting the use of high-power appliances), thus achieving a good balance between ensuring user experience and achieving cost control goals.

[0067] Furthermore, this application also proposes a first power supply control method, applied to the power supply control system described above, such as... Figure 5 As shown, in a first embodiment of the first power supply control method, the steps of the power supply control method include: Step S10A: Determine the corresponding power allocation level based on the user's account balance information; Step S20A: Based on the preset tiered arrears control strategy and the power allocation level, generate a corresponding tiered throttling control instruction. Step S30A: The graded derating control command is transmitted to the execution device through the edge device, so that the execution device performs graded derating power supply to the user distribution node based on the graded derating control command.

[0068] It should be understood that, in this embodiment, the executing entity can be the power supply control system provided in the above embodiments, specifically the cloud device in the power supply control system.

[0069] In this embodiment, it is easy to understand that the user's current arrears can first be determined based on the user's account balance information, and then the arrears can be mapped to the corresponding power allocation level. Subsequently, based on a preset tiered arrears control strategy, a tiered derating control command corresponding to the power allocation level can be generated. Finally, an edge device can be used as a communication relay station to transmit the generated tiered derating control command to the execution device, so that the execution device can gradually switch the corresponding power transmission state of each of the several power allocation loops set inside the tiered interval control command controller, thereby realizing the gradual reduction of the power supplied to the user's power distribution node by each power allocation loop, and completing the tiered derating power supply to the user's power distribution node.

[0070] Based on this information, the user's current power allocation level is determined. For example, when the user's account balance is sufficient, the power allocation level is normal; when the user's account balance is below a preset threshold, different derating levels apply depending on the duration of the arrears. Then, the cloud device generates a corresponding derating control instruction based on the preset tiered arrears control strategy and the determined power allocation level. This instruction contains specific action information that the execution device needs to perform, such as which power allocation circuits need to be shut down and in what order. Finally, the cloud device transmits the derating control instruction to the execution device through the edge device, which then executes the derating power supply operation.

[0071] Based on the above methods, cloud-based devices enable centralized and automated cost control management for a massive number of users.

[0072] The power supply control method provided in this application, employing the power supply control system described in the above embodiments, can solve the technical problem of how to avoid electric arcs caused by power outages triggered by sudden user non-payment. Compared with the prior art, the beneficial effects of the power supply control method provided in this application are the same as those of the power supply control system described in the above embodiments, and other technical features in the power supply control method are the same as those disclosed in the above embodiments, and will not be repeated here.

[0073] Based on the first embodiment of the first power supply control method of this application, in the second embodiment of the first power supply control method of this application, the content that is the same as or similar to the first embodiment of the first power supply control method described above can be referred to the above description and will not be repeated hereafter. On this basis, as Figure 6 As shown, the step of determining the corresponding power allocation level based on the user's account balance information includes: Step S11A: Based on the account balance information, determine the duration of the user's account balance being lower than the preset overdue payment threshold; Step S12A: Determine the power allocation level based on the preset arrears level time mapping table and the arrears duration.

[0074] It should be noted that, in this embodiment, the preset arrears judgment threshold refers to the balance threshold used to determine whether a user is in arrears, which can usually be set to 0 yuan; the arrears duration refers to the duration for which the user's account balance is lower than the preset arrears judgment threshold; the preset arrears level time mapping table refers to a pre-configured mapping table used to map the arrears duration to the power allocation level.

[0075] In this embodiment, the user's account balance is first compared with a preset arrears threshold (e.g., 0 yuan). If the account balance is lower than the preset arrears threshold, the user is determined to be in arrears, and a timer is started to record the duration of the arrears. Subsequently, based on a preset arrears level time mapping table, the power allocation level corresponding to the arrears duration is looked up. For example, an arrears duration of less than 1 day corresponds to the first level of power allocation, an arrears duration of 1-3 days corresponds to the second level of power allocation, and an arrears duration of 3-7 days corresponds to the third level of power allocation.

[0076] The above-mentioned tiered strategy based on the duration of arrears can provide users with a certain buffer time, avoiding the situation where the power is immediately and completely cut off due to a short-term arrears.

[0077] Furthermore, in this embodiment, the power supply control method further includes the following steps: Step S01A: Obtain the user's electricity consumption data through the edge device; Step S02A: Determine the account balance information based on the electricity consumption data.

[0078] It is easy to understand that in this embodiment, the user's electricity consumption data uploaded by the edge device can be obtained. Then, the user's electricity bill can be calculated according to the preset electricity pricing strategy (such as tiered pricing, peak-valley pricing, etc.), and the corresponding fee can be deducted from the user's historical account balance to determine the updated account balance information.

[0079] Based on the above methods, cloud devices can grasp the user's account balance status in real time and accurately, providing a data foundation for subsequent expense control decisions.

[0080] Furthermore, in this embodiment, the power supply control method further includes the following steps: Step S41A: If the account balance information is detected to have changed to a non-arrears status, a corresponding tiered recovery control instruction is generated. Step S42A: The hierarchical recovery control command is transmitted to the execution device through the edge device, so that the execution device can perform hierarchical recovery of power supply to the user power distribution node based on the hierarchical recovery control command.

[0081] It should be noted that in this embodiment, the non-arrears state refers to the state where the user's account balance is not lower than the preset arrears judgment threshold; the graded recovery control instruction refers to the instruction used to control the execution terminal device to restore the power supply of each power distribution circuit step by step; graded power supply restoration refers to changing the combined working state of each power distribution circuit step by step in the reverse order of graded reduction, so as to gradually increase the total power provided to the user's power distribution node.

[0082] It is easy to understand that in this embodiment, even after determining that a user is in arrears, the user's account balance information can still be monitored in real time. When the user's account balance changes from an arrears state to a non-arrears state (i.e., the user has completed payment), the cloud device can generate a corresponding tiered recovery control command. Subsequently, the tiered recovery control command can be transmitted to the execution device through the edge device, so that the execution device restores the power-limited output state of each power distribution circuit to the normal power output state step by step in the reverse order of tiered throttling, thereby achieving tiered power restoration.

[0083] In practice, if the power derating is performed by turning off the first power distribution circuit, the second power distribution circuit, and the third power distribution circuit in sequence, then the power restoration will be performed by restoring the third power distribution circuit, the second power distribution circuit, and the first power distribution circuit in sequence.

[0084] It is worth noting that in this embodiment, after the aforementioned step-by-step restoration, the switching status of each switching device in each power distribution circuit is also detected. Only when all switching devices are detected to be in a closed state will it be determined that the step-by-step restoration of power supply to the user's power distribution node has been completed. Otherwise, the fault reporting process will still be triggered to notify the operator to check the fault and manually restore power supply.

[0085] It is worth noting that in this embodiment, whether it is performing graded derating power supply to user power distribution nodes or graded restoration of power supply to power distribution nodes, an interval is required between the two switching processes of changing the switching state of each switching device (the overall combined operating state of each power distribution circuit). This ensures that after each switching of the switching state of one switching device or one power distribution circuit, the reserved interval must be waited before switching the switching state of the next switching device or the operating state of the next power distribution circuit. This guarantees the stability of the operating state of each power distribution circuit.

[0086] Based on the above-mentioned step-by-step recovery method, the current surge caused by the simultaneous restoration of power supply to all power distribution circuits can be avoided, ensuring the safe and stable operation of the power grid and user equipment.

[0087] Furthermore, this application also proposes a second power supply control method, applied to the power supply control system described above, such as... Figure 7 As shown, in the first embodiment of the second power supply control method, the steps of the power supply control method include: Step S10B: Receive a tiered reduction control instruction sent by the cloud device through the edge device. The tiered reduction control instruction is generated by the cloud device based on a preset tiered arrears control strategy and the user's account balance information. Step S20B: According to the graded derating control command, the combined working state of each power distribution circuit is switched step by step to provide graded derating power supply to the user power distribution node through each power distribution circuit.

[0088] It should be understood that, in this embodiment, the executing entity can be the power supply control system provided in the above embodiments, specifically the execution terminal device in the power supply control system.

[0089] As is readily understood, in this embodiment, the edge device can receive tiered derating control commands sent by the cloud device. These commands contain the power derating level and corresponding execution actions determined by the cloud device based on the user's account balance information and a preset tiered arrears control strategy. After parsing the tiered derating control commands, the corresponding control signals can be output to the execution device according to the command content. Subsequently, the overall combined operating state of each power distribution circuit can be switched step-by-step according to a preset sequence and time interval, progressively reducing the power output of each power distribution circuit to the user's power distribution node, thus completing the tiered derating power supply to the user's power distribution node.

[0090] Based on the above, this step-by-step switching method achieves a smooth reduction in power supply to users, avoiding the unpleasant experience caused by sudden power outages.

[0091] The power supply control method provided in this application, employing the power supply control system described in the above embodiments, can solve the technical problem of how to avoid electric arcs caused by power outages triggered by sudden user non-payment. Compared with the prior art, the beneficial effects of the power supply control method provided in this application are the same as those of the power supply control system described in the above embodiments, and other technical features in the power supply control method are the same as those disclosed in the above embodiments, and will not be repeated here.

[0092] Based on the first embodiment of the second power supply control method of this application, in the second embodiment of the second power supply control method of this application, the contents that are the same as or similar to those in the first embodiment of the second power supply control method described above can be referred to the above description and will not be repeated hereafter. On this basis, as Figure 8 As shown, the power supply control method further includes the following steps: Step S31B: Detect whether the current combined operating state of each power distribution loop matches the ideal combined operating state corresponding to the graded derating control command; In step S32B, if there is a mismatch, the control power circuit stops supplying power to each of the power distribution circuits and reports the first fault information to the cloud device through the edge device.

[0093] It should be noted that, in this embodiment, the first fault phenomenon refers to fault-related information caused by damage to the switching device.

[0094] It is easy to understand that in this embodiment, after completing the graded derating control, the overall combined operating state of each power distribution circuit can be further detected and compared with the ideal combined operating state corresponding to the graded derating control command. If the two match, it indicates that the graded derating control command has been correctly executed, and the system continues to operate normally; if the two do not match, it indicates that there may be a fault in the switching device (e.g., MOSFET short-circuit failure, the circuit that should be turned off is actually still in the conducting state). At this time, the power supply circuit can be controlled to stop supplying power to each power distribution circuit to prevent abnormal power supply from causing safety accidents. At the same time, the first fault information can also be reported to the cloud device through the edge device so that the operation and maintenance personnel can understand the fault situation in time and handle it.

[0095] Furthermore, in this embodiment, the power supply control method further includes the following steps: Step S41B: Collect the real-time temperature of each power distribution circuit; Step S42B: When the real-time temperature is higher than the first preset temperature and lower than the second preset temperature, the air output power of the air-cooling module is controlled based on the real-time temperature so that the real-time temperature is within the preset temperature range. Step S43B, or, if the real-time temperature is lower than the first preset temperature, control the air-cooling module to stop working; Step S44B, or, if the real-time temperature is higher than the second preset temperature, control the power circuit to stop supplying power to each of the power distribution circuits, and report the second fault information to the cloud device through the edge device.

[0096] It should be noted that, in this embodiment, real-time temperature refers to the temperature value of the power distribution circuit collected in real time by the temperature acquisition module; the first preset temperature and the second preset temperature refer to two pre-set temperature thresholds, wherein the first preset temperature is lower than the second preset temperature, the first preset temperature is the critical temperature value at which air cooling is not required, and the second preset temperature is the critical temperature value at which air cooling is ineffective. The preset temperature range refers to the safe temperature range for the power distribution circuit to operate normally, and its boundary can be set between the first preset temperature and the second preset temperature; the second fault information refers to fault information used to describe the fault type of abnormal temperature.

[0097] It is easy to understand that in this embodiment, when the real-time temperature of each power distribution circuit is collected in real time by the temperature acquisition module, a graded temperature control strategy can be executed based on the collected real-time temperature. When the current real-time temperature is lower than the first preset temperature, it indicates that the current real-time temperature is low enough that active heat dissipation is not required. At this time, the air-cooling module can be controlled to stop working to save energy and reduce noise. When the real-time temperature is higher than the first preset temperature but lower than the second preset temperature, it indicates that the current temperature is basically within a suitable range. It is only necessary to consider whether the temperature is too high or too low relative to the median between the first and second preset temperatures. If it is too high, the air-cooling module is controlled to increase the air output power to improve heat dissipation capacity. If it is too low, the air-cooling module is controlled to reduce the air output power to save energy and reduce noise. When the real-time temperature is higher than the second preset temperature, it indicates that the heat dissipation capacity of the current air-cooling module can no longer match the heat generation capacity of the circuit, or it can be understood that there is an abnormal heat source in the current circuit. At this time, the power supply circuit can be controlled to stop supplying power to each power distribution circuit to prevent equipment damage or fire. At the same time, the edge device reports the second fault information to the cloud device so that the operation and maintenance personnel can understand the fault situation in time and handle it. As one method, the first preset temperature can be set to 60℃, and the second preset temperature can be set to 110℃.

[0098] Based on the above-mentioned graded temperature control strategy, an optimized balance between heat dissipation efficiency and energy consumption is achieved, while providing hardware-level protection in abnormal situations.

[0099] Furthermore, this application also proposes a third power supply control method, applied to the power supply control system described above, such as... Figure 9 As shown, in the first embodiment of the third power supply control method, the steps of the power supply control method include: Step S10C: Detect the user's electricity consumption data; Step S20C: In the event of a communication interruption with the cloud device, determine the user's current account balance information based on the electricity consumption data; Step S30C: Determine the corresponding power allocation level based on the account balance information; Step S40C: Based on the preset tiered arrears control strategy and the power allocation level, generate a corresponding tiered throttling control instruction. Step S50C: The graded derating control command is transmitted to the execution device so that the execution device performs graded derating power supply to the user distribution node based on the graded derating control command.

[0100] It should be understood that, in this embodiment, the executing entity can be the power supply control system provided in the above embodiments, specifically the edge device in the power supply control system.

[0101] It should be noted that, in this embodiment, communication interruption refers to a failure in the communication link between the executing entity and the cloud device, making normal data interaction impossible.

[0102] As is readily understood, in this embodiment, the metering sampling module detects the user's electricity consumption data in real time, while the executing entity continuously monitors its communication status with the cloud device. When a communication interruption with the cloud device is detected, the edge device can calculate and determine the user's current account balance information based on locally stored account balance information and the latest collected electricity consumption data. Then, based on this account balance information, the corresponding power allocation level is determined, and a corresponding tiered reduction control instruction is generated based on a locally pre-stored tiered arrears control strategy. Finally, the locally generated tiered reduction control instruction can be transmitted to the executing device, and several power allocation loops gradually switch their respective power transmission states, thereby progressively reducing the power supplied to the user's power distribution node by each power allocation loop, completing the tiered reduction power supply to the user's power distribution node.

[0103] Based on the aforementioned local independent execution mechanism, the cost control function can still operate normally even in the event of a communication interruption, thereby improving the system's reliability and robustness.

[0104] It is worth noting that in this embodiment, after communication is restored, the execution records during the communication interruption period (generated user balance information, recorded electricity consumption data, etc.) can be supplemented to the cloud device to facilitate the later verification of the accuracy of the data.

[0105] The power supply control method provided in this application, employing the power supply control system described in the above embodiments, can solve the technical problem of how to avoid electric arcs caused by power outages triggered by sudden user non-payment. Compared with the prior art, the beneficial effects of the power supply control method provided in this application are the same as those of the power supply control system described in the above embodiments, and other technical features in the power supply control method are the same as those disclosed in the above embodiments, and will not be repeated here.

[0106] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.

Claims

1. A power supply control system, characterized in that, The power supply control system includes: The cloud device is used to generate corresponding tiered credit limit reduction control instructions based on the user's account balance information and the preset tiered arrears control strategy. The edge device is communicatively connected to both the cloud device and the execution device. The execution terminal device includes several power distribution loops, each of which is connected to a user power distribution node; The execution device is used to control each of the power distribution circuits to switch their combined working states step by step according to the graded derating control command, so as to provide graded derating power to the user power distribution node through each of the power distribution circuits.

2. The power supply control system as described in claim 1, characterized in that, The power distribution circuit includes: Power resistors are connected to the power supply circuit and the user power distribution node, respectively. The switching device is connected in parallel with the power resistor; The execution device also includes: The first controller is connected to the control terminals of the edge device and each of the switching devices, and is used to control each switching device in each of the power distribution loops to switch to the corresponding switching state according to the graded derating control command.

3. The power supply control system as described in claim 2, characterized in that, The execution device also includes: An intermediate relay is connected to both the first controller and the control terminal of the power circuit. A status detection module is set between each of the power distribution loops and the user power distribution node, and is connected to the first controller, for detecting the switching status of each of the switching devices; The first controller is further configured to control the intermediate relay to cut off the power supply to the power circuit when it is determined that the switching state of each of the switching devices does not match the ideal switching state corresponding to the graded derating control command.

4. The power supply control system as described in claim 3, characterized in that, The status detection module includes: A plurality of sampling resistors, the number of which is the same as the number of switching devices, wherein each sampling resistor is connected in series between a corresponding switching device and the user power distribution node; A plurality of differential amplifiers, the number of which is the same as the number of sampling resistors, wherein the first input terminal of each differential amplifier is connected to the first terminal of a corresponding sampling resistor, and the second input terminal is connected to the second terminal of a corresponding sampling resistor; the output terminal of each differential amplifier is connected to the first controller.

5. The power supply control system as described in claim 2, characterized in that, The execution device also includes: A temperature acquisition module is attached to each of the power distribution circuits and connected to the first controller to acquire the real-time temperature of each of the power distribution circuits. Air-cooled modules are installed at each of the aforementioned power distribution circuits; The first controller is connected to the temperature acquisition module and the air-cooling module respectively, and is also used to control the air output power of the air-cooling module according to the real-time temperature of each power distribution circuit.

6. The power supply control system as described in claim 2, characterized in that, Each of the power distribution circuits is also attached to the metal casing of the actuator via a thermally conductive medium, and convection heat dissipation holes are provided at the corresponding attachment positions.

7. The power supply control system as described in claim 1, characterized in that, The edge device includes: The communication module is connected to the cloud device. The metering sampling module is used to collect users' electricity consumption data; The second controller is connected to the communication module, the metering and sampling module, and the execution terminal device, respectively. The second controller is used to upload the power consumption data to the cloud device through the communication module; The cloud device is also used to determine the user's account balance information based on the electricity consumption data.

8. The power supply control system as described in any one of claims 1 to 7, characterized in that, The user power distribution nodes include power supply guarantee circuit nodes and conventional load circuit nodes; The power supply circuit node is independently connected to the power supply circuit; The execution device is also used to control the power distribution circuits to switch their combined working states step by step according to the power distribution level, based on the graded derating control command, and to perform graded derating power supply to the conventional load circuit nodes.

9. A power supply control method, characterized in that, The power supply control method, applied to any one of claims 1 to 8, comprises the following steps: The corresponding power allocation level is determined based on the user's account balance information; Based on the preset tiered arrears control strategy and the power allocation level, a corresponding tiered reduction control instruction is generated. The tiered derating control command is transmitted from the edge device to the execution device, so that the execution device can perform tiered derating power supply to the user's power distribution node based on the tiered derating control command.

10. The power supply control method as described in claim 9, characterized in that, The step of determining the corresponding power allocation level based on the user's account balance information includes: Based on the account balance information, determine the duration of arrears when the user's account balance is below a preset arrears threshold; The power allocation level is determined based on a preset overdue payment level time mapping table and the overdue payment duration.

11. The power supply control method as described in claim 9, characterized in that, The steps of the power supply control method further include: The user's electricity consumption data is obtained through the edge device; Based on the electricity consumption data, the account balance information is determined.

12. The power supply control method as described in claim 9, characterized in that, The steps of the power supply control method further include: Upon detecting that the account balance information has changed to a non-arrears status, a corresponding tiered recovery control instruction is generated; The tiered recovery control command is transmitted from the edge device to the execution device, so that the execution device can perform tiered recovery of power supply to the user power distribution node based on the tiered recovery control command.

13. A power supply control method, characterized in that, The power supply control method, applied to any one of claims 1 to 8, comprises the following steps: The edge device receives a tiered reduction control instruction sent by the cloud device. The tiered reduction control instruction is generated by the cloud device based on a preset tiered arrears control strategy and the user's account balance information. According to the graded derating control command, the combined working state of each power distribution circuit is switched step by step so as to provide graded derating power supply to the user power distribution node through each power distribution circuit.

14. The power supply control method as described in claim 13, characterized in that, The steps of the power supply control method further include: Detect whether the current combined operating state of each power distribution loop matches the ideal combined operating state corresponding to the graded derating control command; In the event of a mismatch, the control power circuit stops supplying power to each of the power distribution circuits and reports a first fault to the cloud device via the edge device.

15. The power supply control method as described in claim 13, characterized in that, The steps of the power supply control method further include: Collect the real-time temperature of each of the power distribution circuits; When the real-time temperature is higher than the first preset temperature but lower than the second preset temperature, the air output power of the air-cooling module is controlled based on the real-time temperature so that the real-time temperature is within the preset temperature range. Alternatively, if the real-time temperature is lower than the first preset temperature, the air-cooling module may be controlled to stop working. Alternatively, if the real-time temperature is higher than the second preset temperature, the control power circuit stops supplying power to each of the power distribution circuits, and reports the second fault information to the cloud device through the edge device.

16. A power supply control method, characterized in that, The power supply control method, applied to any one of claims 1 to 8, comprises the following steps: Detect users' electricity consumption data; In the event of a communication interruption with the cloud device, the user's current account balance information can be determined based on the electricity consumption data; Based on the account balance information, the corresponding power allocation level is determined; Based on the preset tiered arrears control strategy and the power allocation level, a corresponding tiered reduction control instruction is generated. The graded derating control command is transmitted to the execution device so that the execution device can perform graded derating power supply to the user power distribution node based on the graded derating control command.

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