Power distribution and management method based on outdoor distribution box and distribution box

Abstract

The invention relates to the technical field of power distribution management, in particular to a power distribution and management method based on an outdoor power distribution box and the power distribution box. The method comprises the following steps: acquiring power grid information, environment information and load information of each loop connected with a distribution box; wherein the load information comprises load types, load rated power and load working condition information, and the load types comprise an inductive load, a capacitive load and a constant current load; determining a total output power upper limit of the distribution box based on the power grid information; determining the loop power limit of each loop based on the environment information, the load type, the load rated power and the load working condition information; and determining the loop output power of each loop based on the total output power upper limit, the loop power limit and the received load power demand signal of the distribution box, and controlling a power regulation module arranged in the distribution box to output power according to the loop output power. According to the invention, power distribution equalization can be realized through adaptive adjustment.

Description

Technical Field

[0001] This application relates to the field of power distribution management technology, and in particular to a power distribution and management method and a power distribution box based on an outdoor distribution box. Background Technology

[0002] With the diversification of urban outdoor power equipment, such as charging piles, landscape lighting, and monitoring equipment, outdoor distribution boxes, as core nodes in power distribution, directly impact power supply reliability, energy efficiency, and equipment safety through the rationality of power allocation and management. Related technologies often employ a fixed power distribution mode, which presets the output power based on the circuit's rated capacity or achieves basic control through simple overload protection devices. However, this approach cannot adaptively adjust to dynamic load characteristics, grid fluctuations, and environmental conditions, leading to power distribution imbalances in complex and variable load scenarios, thus reducing the stability and economy of outdoor power supply systems. Summary of the Invention

[0003] To address the problem that existing distribution boxes are unable to adaptively adjust power distribution, leading to power imbalance, this application provides a power distribution and management method and distribution box based on an outdoor distribution box.

[0004] Firstly, this application provides a power distribution and management method based on an outdoor distribution box, employing the following technical solution: A power distribution and management method based on an outdoor distribution box, comprising: Acquire power grid information, environmental information, and load information of each circuit connected to the distribution box; wherein, the load information includes load type, load rated power, and load operating condition information, and the load type includes: inductive load, capacitive load, and constant current load; The upper limit of the total output power of the distribution box is determined based on the power grid information; The circuit power limit for each circuit is determined based on the environmental information, the load type, the rated power of the load, and the load operating condition information. Based on the total output power limit, the circuit power limit, and the distribution box determining the circuit output power of each circuit according to the received load power demand signal, the power adjustment module built into the distribution box is controlled to output power according to the circuit output power.

[0005] By adopting the above technical solutions, detailed information on the power grid, environment, and loads of each circuit is collected from multiple dimensions, enabling comprehensive perception of the power system status. The total output power limit is dynamically determined based on power grid information, adapting to changes in power grid peak and valley loads, frequency, and harmonics, ensuring stable power grid operation. Circuit power limits are set in conjunction with environmental and load type factors, providing targeted protection for different loads and improving equipment safety and lifespan. Based on the total power limit, circuit limits, and load requirements, output power is determined through priority allocation, and the regulating module is controlled, optimizing power distribution efficiency, ensuring priority power supply to critical loads, and improving the power balance of the outdoor power distribution system.

[0006] In a preferred embodiment, this application can be further configured such that: the power grid information includes the reference power limit of the power grid incoming line, power grid peak and valley information, power grid frequency, and harmonic voltage distortion rate; determining the total output power limit of the distribution box based on the power grid information includes: The first power upper limit is obtained by adjusting the reference power upper limit based on the power grid peak-valley information; Determine the frequency difference between the power grid frequency and the standard frequency range, and adjust the first power upper limit based on the frequency difference and the power limiting mechanism to obtain the second power upper limit; When the number of times the harmonic voltage distortion rate exceeds the preset distortion rate threshold within the preset time window reaches a preset number, the second power limit is adjusted based on the harmonic suppression mechanism to obtain the total output power limit of the distribution box.

[0007] By adopting the above technical solutions, the upper limit of the baseline power is adjusted based on the peak and valley information of the power grid, which can adapt to different load demands during peak and off-peak periods and improve the flexibility of power grid load regulation. The second upper limit of power is obtained by adjusting the power grid frequency difference and power limiting mechanism, which can quickly respond to frequency fluctuations and ensure the stability of the power grid frequency. The upper limit of total output power is obtained by monitoring the harmonic voltage distortion rate through a preset time window and adjusting it accordingly, which can effectively suppress the influence of harmonics, protect equipment and maintain the waveform quality of the power grid. Overall, the dynamic and precise control of the total output power of the distribution box is realized, which enhances the stability and safety of power grid operation.

[0008] In a preferred embodiment, this application can be further configured such that: the environmental information includes temperature information and humidity information; the step of determining the circuit power limit for each circuit based on the environmental information, the load type, the load rated power, and the load operating condition information includes: Based on the temperature information, the rated power of the load in the circuit containing the inductive load is adjusted to obtain the first rated power of the load; it is determined whether the first rated power of the load meets the starting requirements of the inductive load. If it does, the first rated power of the load is used as the circuit power limit of the corresponding circuit. Based on the humidity information, adjust the rated power of the load in the circuit where the capacitive load is located to obtain the second rated power of the load; obtain the grid power factor, and determine whether the second rated power of the load meets the reactive power compensation for the capacitive load based on the grid power factor. If it does, then the second rated power of the load is used as the circuit power limit of the corresponding circuit. The circuit power limit is obtained by adjusting the rated power of the circuit containing the constant current load based on a preset constant current ratio. The circuit power limit of the circuit containing the constant current load is higher than the rated power of the circuit containing the constant current load. Monitor whether there is an overload circuit in each circuit connected to the distribution box. If so, adjust the circuit power limit of the overload circuit based on the actual circuit power of the overload circuit.

[0009] By adopting the above technical solutions, the power of inductive loads is adjusted according to temperature and the start-up requirements are verified. This not only adapts to the impact of temperature on inductive loads but also ensures their smooth start-up, improving operational reliability. The power of capacitive loads is adjusted in conjunction with humidity and grid power factor, taking into account both the impact of the environment on the equipment and the reactive power compensation requirements, which is conducive to improving grid efficiency. Higher limits are set for constant current loads according to preset ratios to meet their requirements for current stability and ensure normal equipment operation. Monitoring and adjusting the power of overload circuits can prevent overload damage to equipment in a timely manner. Overall, precise adaptation of power limits for different types of loads is achieved.

[0010] In a preferred embodiment, this application can be further configured such that: the step of determining the circuit output power of each circuit based on the total output power limit, the circuit power limit, and the distribution box according to the received load power demand signal includes: Obtain the load function type of each loop, and determine the basic priority index of each loop based on the load function type; Obtain time information and load condition information, and dynamically adjust the basic priority index of each loop based on the time information and load condition information to obtain the current priority index of each loop; The required power of each loop is determined based on the loop power limit and the load power demand signal. The total circuit demand power is obtained by calculating the sum of the circuit demand power of each circuit connected to the distribution box, and then comparing the total output power limit with the total circuit demand power. If the total output power limit is less than the total circuit demand power, then the total output power is allocated to each circuit based on the current priority index of each circuit to obtain the circuit output power of each circuit.

[0011] By adopting the above technical solutions, the basic priority index is determined according to the load function type, clarifying the inherent importance of different loads and providing a basis for power allocation; the current priority index is obtained by dynamically adjusting time and operating conditions, making the priority adapt to real-time needs and improving the flexibility of allocation; the circuit demand power is determined based on circuit limits and load requirements, taking into account both safety and actual needs; by comparing the total demand with the total upper limit and allocating power according to the current priority, the power supply to important loads can be prioritized when there is a power shortage, thus optimizing the overall power allocation mechanism and improving the reliability and resource utilization of the power distribution system.

[0012] In a preferred embodiment, this application can be further configured such that: the step of dynamically adjusting the base priority index of each loop based on the time information and the load condition information to obtain the current priority index of each loop includes: Based on the time information and the preset time period priority mapping relationship, the basic priority of each loop is dynamically adjusted to obtain the intermediate priority index of each loop. Based on the load condition information, it is identified whether the duration of full-load or light-load operation has reached a preset duration. If so, the intermediate priority index of the corresponding circuit is adjusted to obtain the current priority index. The priority adjustment method for the circuit containing the full-load load is to increase, and the priority adjustment method for the circuit containing the light-load load is to decrease.

[0013] By adopting the above technical solution, the intermediate priority index is obtained by adjusting the time information and the preset time period mapping relationship, so that the priority can be adapted to the actual needs of different time periods, and the timeliness of power allocation is improved. The intermediate priority index is adjusted according to the duration of full load or light load operation to obtain the current priority index, so that the priority can reflect the real-time operating status of the load, enhancing the flexibility of allocation. Overall, dynamic optimization of priority is realized, ensuring that power resources are tilted to the loads that need them more, and improving the operating efficiency of the power distribution system.

[0014] In a preferred embodiment, this application can be further configured such that: the current priority index based on each loop is used to allocate the total output power to each loop to obtain the loop output power of each loop, including: The product of the current priority index and the power demand of each loop is calculated as the loop output power. The output power of each circuit is allocated sequentially from high to low according to its current priority index until the total output power allocation is completed, thus obtaining the output power of each circuit.

[0015] By adopting the above technical solution, the initial output power is determined by calculating the product of the current priority index and the circuit demand power. This combines priority with actual demand, providing a scientific basis for allocation. The total output power is allocated sequentially from high to low priority until completion, ensuring that high-priority loads receive power support first. When the total power is limited, resources can be allocated reasonably, improving the power supply targeting and efficiency of the power distribution system and ensuring the stable operation of critical loads.

[0016] In a preferred embodiment, this application can be further configured such that the method also includes: When the distribution box receives a newly connected unknown load, it collects the operating characteristics of the unknown load under different output power. The operating characteristics are compared with a preset typical characteristic library to determine the load type of the unknown load and record the rated power of the unknown load.

[0017] By adopting the above technical solution, the operating characteristics of newly connected unknown loads under different output power are collected; the operating characteristics are compared with the preset typical feature library to determine the load type and record the rated power, thereby realizing the automated identification and management of unknown loads and ensuring the safe and stable operation of newly connected loads.

[0018] Secondly, this application provides a distribution box, which adopts the following technical solution: A distribution box includes: a data acquisition module, a power regulation module, and a distribution management module; The data acquisition module is used to collect load information, power grid information, and environmental information; The power regulation module is used to output power according to a determined circuit output power. The distribution management module is used to execute the power distribution and management method based on outdoor distribution boxes as described in any of the first aspects.

[0019] In a preferred embodiment, this application can be further configured such that the allocation management module includes: One or more processors; Memory; At least one application, wherein the at least one application is stored in memory and configured to be executed by at least one processor, the at least one application being configured to: perform the power distribution and management method based on an outdoor distribution box as described in any of the first aspects.

[0020] In summary, this application includes the following beneficial technical effects: This application achieves comprehensive perception of the power system status by collecting detailed information on the power grid, environment, and loads of each circuit from multiple dimensions; it dynamically determines the upper limit of total output power based on power grid information, adapting to changes in power grid peak and valley, frequency, and harmonics, ensuring stable operation of the power grid; it sets circuit power limits by combining environmental and load type factors, which can protect different loads in a targeted manner, improving equipment safety and lifespan; based on the upper limit of total power, circuit limits, and load demand, it determines the output power through priority allocation and controls the regulation module, optimizing power allocation efficiency, ensuring priority power supply to critical loads, and improving the power balance of the outdoor power distribution system. Attached Figure Description

[0021] Figure 1 This is a schematic flowchart illustrating a power distribution and management method based on an outdoor distribution box, as provided in an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a distribution box provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of an allocation management module provided in an embodiment of this application. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 To be continued Figure 3 This application will be described in further detail.

[0023] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0026] It should be noted that, in the optional embodiments of this application, the data related to object information, when applied to specific products or technologies, requires the permission or consent of the object. Furthermore, the collection, use, and processing of this data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. In other words, if the embodiments of this application involve data related to an object, it must be obtained with the object's authorization and consent, the authorization and consent of relevant departments, and in accordance with the relevant laws, regulations, and standards of the country and region. If the embodiments involve personal information, the acquisition of all personal information requires the individual's consent. If sensitive information is involved, the separate consent of the information subject is required. The embodiments also need to be implemented with the object's authorization and consent.

[0027] This application provides a power distribution and management method based on an outdoor distribution box, such as... Figure 1 As shown, the method provided in this embodiment is executed by an allocation management module, which can be a server or a terminal device. The server can be an independent physical server, a server cluster or distributed system composed of multiple physical servers, or a cloud server providing cloud computing services. The terminal device can be a smartphone, tablet, laptop, desktop computer, etc., but is not limited to these. The terminal device and the server can be directly or indirectly connected via wired or wireless communication. This embodiment does not impose any limitations on this connection. The method includes steps S101-S104, wherein: S101. Obtain power grid information, environmental information, and load information of each circuit connected to the distribution box; wherein, the load information includes load type, load rated power, and load operating condition information, and the load type includes: inductive load, capacitive load, and constant current load.

[0028] Specifically, the power grid information includes the baseline power limit of the incoming power line, peak and valley information, power grid frequency, and harmonic voltage distortion rate. A power monitoring terminal is deployed on the incoming power line side of the distribution box. This terminal collects real-time voltage, current, and frequency of the power grid through three-phase voltage / current sensors and calculates the harmonic voltage distortion rate using a built-in harmonic analysis unit. The harmonic voltage distortion rate represents the percentage of the effective value of harmonic components in the power grid voltage to the effective value of the fundamental frequency, reflecting the degree of distortion in the power grid waveform. An excessively high distortion rate can affect equipment lifespan. The terminal connects to the power sector's smart grid system to obtain the peak and valley time periods (e.g., peak hours 8:00-22:00, valley hours 22:00-8:00 the next day) and the baseline power limit (determined by the rated capacity of the incoming power line).

[0029] Environmental information includes temperature and humidity information. Temperature and humidity sensors are installed outside the distribution box to collect temperature and humidity information in real time.

[0030] For load information, each circuit connects one or several loads of the same type. An intelligent sensing unit is installed at the incoming terminal of each circuit in the distribution box. This unit includes a current transformer, a voltage sensor, and a load characteristic analysis chip. The current transformer collects the circuit current in real time, and the voltage sensor collects voltage data synchronously. The two are combined to calculate the circuit power. The load characteristic analysis chip distinguishes the load type by detecting the phase difference between the current and voltage (inductive load current lags the voltage by within 90°, capacitive load current leads the voltage by within 90°, and constant current load current waveform is stable with a fixed phase deviation). The rated power of the load can be determined by retrieving the load's factory parameters, or by recording the maximum active power during stable load operation. If there are multiple loads in a circuit, the rated power of the circuit represents the sum of the rated power of all loads in the circuit. The load condition information for each circuit is determined by the ratio of the current circuit's output power to the current circuit's rated load power. This ratio is compared with the preset ranges for each operating condition (overload, full load, light load), and the successfully matched condition is used as the load condition information for the corresponding circuit.

[0031] Inductive loads: Loads containing internal inductors (such as motors and transformers) exhibit current changes that lag behind voltage changes, resulting in inrush current during startup. Capacitive loads: Loads containing internal capacitors (such as capacitor banks and reactive power compensation devices) exhibit current changes that lead voltage changes, improving the power factor of the power grid. Constant current loads: Loads with a constant output current (such as LED streetlights and precision instruments) show minimal power fluctuations with voltage.

[0032] S102. Determine the upper limit of the total output power of the distribution box based on the power grid information.

[0033] Specifically, the upper limit of the total output power is obtained by adjusting the upper limit of the reference power in sequence based on the peak and valley information of the power grid, the power grid frequency, and the harmonic voltage distortion rate.

[0034] S103. Determine the circuit power limit for each circuit based on environmental information, load type, load rated power, and load operating condition information.

[0035] Specifically, the circuit power limit is the maximum allowable output power set for each circuit, which is the threshold to ensure the safe operation of the load. Different types of loads have different power tolerance characteristics, including: inductive loads are greatly affected by temperature (rising temperature will lead to increased winding resistance), requiring dynamic power limiting; the reactive power compensation function of capacitive loads is related to humidity and grid power factor, requiring targeted adjustments; constant current loads require reserved power redundancy to maintain current stability; and overload adjustment prevents equipment from being damaged due to continuous over-power operation.

[0036] Therefore, the circuit power limit is obtained by adjusting the rated power of the circuit containing the inductive load based on temperature information. The circuit power limit is also obtained by adjusting the rated power of the circuit containing the capacitive load based on humidity information. Finally, the circuit power limit is obtained by adjusting the rated power of the circuit containing the constant current load based on a preset constant current ratio. Furthermore, the system monitors in real time whether any circuits connected to the distribution box are overloaded; if so, the circuit power limit for the overloaded circuit is adjusted based on its actual circuit power.

[0037] S104. Based on the total output power limit, the circuit power limit, and the distribution box determining the circuit output power of each circuit according to the received load power demand signal, control the power regulation module built into the distribution box to output power according to the circuit output power.

[0038] Specifically, the load function type, time information, and load condition information of each circuit are obtained. Based on the load function type, time information, and load condition information, the basic priority index of each circuit is dynamically adjusted to obtain the current priority index of each circuit. The circuit power demand of each circuit is determined based on the circuit power limit and the load power demand signal. The sum of the circuit power demand of each circuit connected to the distribution box is calculated to obtain the total circuit power demand, and the total output power limit and the total circuit power demand are compared.

[0039] If the total output power limit is less than the total circuit power requirement, the total output power is allocated to each circuit based on the current priority index of each circuit to obtain the circuit output power of each circuit. If the total output power limit is not less than the total circuit power requirement, the circuit power requirement of each circuit is used as the circuit output power of each circuit.

[0040] This embodiment achieves comprehensive perception of the power system status by collecting detailed information on the power grid, environment, and loads of each circuit from multiple dimensions; it dynamically determines the upper limit of total output power based on power grid information, adapting to changes in power grid peak and valley, frequency, and harmonics, ensuring stable power grid operation; it sets circuit power limits based on environmental and load type factors, providing targeted protection for different loads and improving equipment safety and lifespan; and it optimizes power distribution efficiency by prioritizing and controlling the regulation module based on the upper limit of total power, circuit limits, and load requirements, ensuring priority power supply to critical loads and improving the power balance of the outdoor power distribution system.

[0041] In one possible implementation of this application, the baseline power limit is the initial maximum output power calculated based on the rated electrical parameters (rated power supply and rated current) of the incoming line to the distribution box, which serves as the baseline value for power adjustment. During peak hours, the power grid faces significant supply pressure, necessitating the limitation of user-side output power to alleviate load pressure; during off-peak hours, power supply capacity is sufficient, allowing for appropriate relaxation of power restrictions to improve energy utilization. Through differentiated adjustments during peak and off-peak periods, coordination with grid dispatch is achieved, balancing power supply stability and economy.

[0042] The system acquires the current time in real time and compares it with the peak-valley time table of the power grid to determine the current time period. If it is peak time, the reference power upper limit is lowered by a first percentage, i.e., first power upper limit = reference power upper limit × (1 - first percentage). If it is valley time, the reference power upper limit is increased by a second percentage, i.e., first power upper limit = reference power upper limit × (1 + second percentage). If it is normal time, the reference power upper limit is not adjusted and is directly used as the first power upper limit. The first and second percentages can be set according to actual experience, and this embodiment does not limit them. Optionally, the first percentage is 20% and the second percentage is 10%.

[0043] The power grid frequency refers to the alternating frequency of AC power in the power grid. The standard power grid frequency is 50Hz, and its stability directly reflects the balance between power generation and consumption (too high a frequency indicates overgeneration, too low a frequency indicates undergeneration). The standard frequency range represents the frequency interval that ensures the safe operation of the power grid. Optionally, the standard frequency range is 49.5Hz-50.5Hz; exceeding this range will affect the normal operation of electrical equipment. The frequency difference is the difference between the actual power grid frequency and the boundary value of the standard frequency range. When the power grid frequency is less than the lower limit of the standard frequency range, the frequency difference is the difference between the lower limit of the standard frequency range and the power grid frequency; when the power grid frequency is greater than the upper limit of the standard frequency range, the frequency difference is the difference between the power grid frequency and the upper limit of the standard frequency range. The power limiting mechanism is a control rule that gradually reduces the output power according to the frequency difference when the power grid frequency deviates from the standard frequency range. The purpose is to stabilize the power grid frequency by reducing the electrical load.

[0044] The power limiting mechanism is activated based on the frequency difference, including: when the grid frequency is below the lower limit of the standard frequency range, the second power upper limit = the first power upper limit × (1 - frequency difference / 0.1 × third ratio); when the grid frequency is above the upper limit of the standard frequency range, the second power upper limit = the first power upper limit × (1 - frequency difference / 0.1 × fourth ratio). Grid frequency is a core indicator reflecting the supply and demand balance of the power system. When the frequency is below the standard range, it indicates insufficient power generation capacity, requiring load reduction by limiting user power; when the frequency is above the standard range, it indicates overcapacity, requiring power limiting, but with less urgency than in low-frequency situations. Precise response to grid frequency is achieved through differentiated limiting ratios (the adjustment range is larger at low frequencies, i.e., the third ratio is higher than the fourth ratio; optionally, the third ratio is 3%, and the fourth ratio is 5%). The adjusted second power upper limit is updated to the buffer in real time; if the frequency recovers to the standard range, it gradually recovers to the original first power upper limit.

[0045] The preset time window is used to statistically analyze the time interval during which harmonic voltage distortion exceeds the standard. It can be set to 5 minutes to avoid misjudgments caused by instantaneous interference. The preset distortion threshold is the upper limit of harmonic voltage distortion to ensure the safe operation of the equipment. It can be set to 5% according to power grid standards. The preset number indicates the allowable number of times the harmonic voltage distortion exceeds the standard within the preset time window. It can be set to 3 times. If it exceeds this, it is judged as harmonic pollution and intervention is required. The harmonic suppression mechanism means that when the harmonic voltage distortion exceeds the standard and reaches the preset conditions, the output power is reduced to reduce the impact of the harmonic source on the power grid and avoid equipment damage due to harmonic overload. Optionally, the harmonic suppression mechanism is to reduce the second power limit by a fifth percentage, which can be 10%.

[0046] This embodiment adjusts the baseline power limit based on grid peak and valley information, which can adapt to different load demands during peak and off-peak periods and improve the flexibility of grid load regulation. The second power limit is obtained by adjusting according to the grid frequency difference and power limiting mechanism, which can quickly respond to frequency fluctuations and ensure grid frequency stability. By monitoring the harmonic voltage distortion rate through a preset time window and adjusting accordingly to obtain the total output power limit, the influence of harmonics can be effectively suppressed, equipment can be protected and grid waveform quality can be maintained. Overall, dynamic and precise control of the total output power of the distribution box is realized, which enhances the stability and safety of grid operation.

[0047] One possible implementation of this application embodiment includes environmental information such as temperature and humidity information; determining the circuit power limit for each circuit based on the environmental information, load type, load rated power, and load operating condition information includes: The rated power of the load in the circuit containing the inductive load is adjusted based on temperature information to obtain the first rated power of the load; it is determined whether the first rated power of the load meets the starting requirements of the inductive load. If it does, the first rated power of the load is used as the circuit power limit of the corresponding circuit. The rated power of the load in the circuit containing the capacitive load is adjusted based on the humidity information to obtain the rated power of the second load; the power factor of the power grid is obtained, and it is determined whether the rated power of the second load meets the reactive power compensation for the capacitive load based on the power factor of the power grid. If it does, the rated power of the second load is used as the circuit power limit of the corresponding circuit. The circuit power limit is obtained by adjusting the rated power of the circuit containing the constant current load based on the preset constant current ratio. The circuit power limit of the circuit containing the constant current load is higher than the rated power of the circuit containing the constant current load. Monitor whether there are overloaded circuits in each circuit connected to the distribution box. If so, adjust the circuit power limit of the overloaded circuit based on the actual circuit power.

[0048] In this embodiment, the resistance of the inductive load increases with temperature. If the rated power is still supplied when the temperature is too high, the load will overheat, affecting its service life or even burning out the equipment. Therefore, adjusting the rated power of the inductive load based on temperature information can ensure its safe operation. At the same time, the inductive load requires a large power to start, and it must be ensured that the adjusted power meets the starting requirements; otherwise, starting failure will occur.

[0049] Determine the temperature correction factor and set a reference temperature (which can be 40℃). When the collected temperature is higher than the reference temperature, the temperature correction factor decreases by a first value, such as 0.01, for every 1℃ increase. When the temperature is lower than or equal to 40℃, the temperature correction factor is 1. For example, when the temperature is 45℃, the correction factor is 1 - (45-40) × 0.01 = 0.95. The first load rated power = load rated power × temperature correction factor. If the rated power of an inductive load is 10kW and the temperature correction factor is 0.95, then the first load rated power is 10 × 0.95 = 9.5kW. Determine if the starting requirements are met. Pre-obtain the starting power of the inductive load (e.g., the starting power of a motor is 5 times its rated power, i.e., 50kW). If the first load rated power ≥ the starting power, then use the first load rated power as the circuit power limit for the corresponding circuit. If not, use the starting power as the temporary circuit power limit. After the load starts (reaching the start-up completion time), switch back to the first load rated power.

[0050] At high humidity levels, the insulation performance of capacitive loads deteriorates. If they continue to operate at their rated power, insulation breakdown may occur, leading to short-circuit faults. Therefore, adjusting the rated power of capacitive loads based on humidity information ensures their safe operation. Simultaneously, the primary function of capacitive loads is reactive power compensation; it is essential to ensure that the adjusted power meets the grid's reactive power compensation requirements to maintain the grid's power factor within a reasonable range.

[0051] Determine the humidity correction factor and set a reference humidity (e.g., 80% RH). When the collected humidity is higher than the reference humidity, the humidity correction factor decreases by a second value (e.g., 0.005) for every 1% increase in RH. When the humidity is lower than or equal to the reference humidity, the humidity correction factor is 1. For example, when the humidity is 85% RH, the correction factor is 1 - (85 - 80) × 0.005 = 0.975. The second load rated power = load rated power × humidity correction factor. If a capacitive load has a rated power of 20 kvar (kilovar, a unit of reactive power) and a humidity correction factor of 0.975, then the second load rated power is 20 × 0.975 = 19.5 kvar. Determine whether the reactive power compensation requirement is met. The current power factor of the power grid is obtained through power grid monitoring equipment. If the current power factor is lower than the target power factor (usually 0.9), the required reactive power compensation ΔQ = P × (tanφ1 - tanφ2) is calculated, where P is the active power, φ1 is the phase angle corresponding to the current power factor, and φ2 is the phase angle corresponding to the target power factor. If the rated power of the second load is greater than or equal to ΔQ, then the rated power of the second load is used as the circuit power limit for the corresponding circuit; if not, the rated power of the second load is adjusted according to the required reactive power compensation ΔQ, i.e., the adjusted rated power of the second load = ΔQ, and this is used as the circuit power limit.

[0052] Constant current loads require a stable current supply. When the mains voltage fluctuates, if the power limit is only equal to the rated power, it may lead to unstable current and affect the normal operation of the load. Setting a circuit power limit higher than the rated power can provide sufficient power margin for the constant current load when the voltage fluctuates, ensuring that its current remains constant. The preset constant current ratio is a pre-set ratio coefficient greater than 1 to ensure that the constant current load can still operate stably under conditions such as voltage fluctuations. For example, 1.1 means that the circuit power limit is 1.1 times the rated power of the load.

[0053] Adjusting power limits: For overloaded circuits, adjust their power limits to 90% of the actual circuit power (e.g., 60% of the actual power). For example, if a circuit's actual power is 12kW and the current limit is 10kW, after being identified as overloaded, the new limit is 12 × 90% = 10.8kW. After adjustment, continuously monitor the circuit's actual power. If the actual power does not exceed the new limit within a specific time period, such as 10 minutes, gradually restore it to the original circuit power limit (restored by 10% per minute). If the overload persists, further reduce the limit (by 10% of the current actual power) and issue an overload alarm signal to prompt staff to inspect the circuit.

[0054] This embodiment adjusts the power of the inductive load based on temperature and verifies startup requirements, adapting to the influence of temperature on the inductive load while ensuring its smooth startup and improving operational reliability. It also adjusts the power of the capacitive load by combining humidity and grid power factor, balancing the impact of the environment on the equipment with reactive power compensation requirements, thus improving grid efficiency. A higher limit is set for the constant current load according to a preset ratio to meet its requirements for current stability and ensure normal equipment operation. Monitoring and adjusting the overload circuit power can promptly prevent overload damage to the equipment. Overall, this embodiment achieves precise adaptation of power limits for different types of loads.

[0055] One possible implementation of this application embodiment, based on the total output power limit, the circuit power limit, and the distribution box determining the circuit output power of each circuit according to the received load power demand signal, includes: Obtain the load function type of each loop, and determine the basic priority index of each loop based on the load function type; Obtain time information and load condition information, and dynamically adjust the basic priority index of each loop based on the time information and load condition information to obtain the current priority index of each loop; The required power of each loop is determined based on the loop power limit and load power demand signal. Calculate the sum of the circuit power requirements of each circuit connected to the distribution box to obtain the total circuit power requirement, and compare it with the upper limit of the total output power and the total circuit power requirement. If the total output power limit is less than the total circuit power requirement, then the total output power is allocated to each circuit based on the current priority index of each circuit to obtain the circuit output power of each circuit.

[0056] In this embodiment, the load function type is defined based on the function and importance of the load within the power system. The basic priority index is an initial priority value assigned based on the load function type, reflecting the inherent importance of different functional loads in power allocation; a higher value indicates a higher priority. Different functional loads have varying degrees of urgency and importance in terms of power supply. Emergency loads are directly related to public safety and require priority in power supply; ordinary power loads have lower requirements for power continuity. By setting a basic priority index, this inherent difference can be reflected in power allocation, ensuring the basic power supply needs of critical loads.

[0057] Common load functions are pre-classified into five categories: emergency support (e.g., emergency lighting, fire pumps), core public services (e.g., traffic lights, hospital backup power), general public services (e.g., community streetlights, public charging stations), commercial services (e.g., shop electricity, advertising screens), and temporary power (e.g., mobile vendor power, temporary construction equipment). A fixed basic priority index is assigned to each category: 1 for emergency support, 0.8 for core public services, 0.6 for general public services, 0.4 for commercial services, and 0.2 for temporary power.

[0058] The basic priority of each circuit is dynamically adjusted based on time information and a preset time period priority mapping relationship to obtain the intermediate priority index of each circuit. Based on load condition information, it is identified whether a load is operating at full load or light load for a preset duration. If so, the intermediate priority index of the corresponding circuit is adjusted to obtain the current priority index. Specifically, the priority of the circuit containing a fully loaded load is increased, while the priority of the circuit containing a lightly loaded load is decreased. The importance of the same load may differ at different times (e.g., streetlights are more important at night), and the load's operating status also affects its power supply priority (e.g., critical equipment operating at full load requires a more stable power supply). Dynamically adjusting the priority index allows power allocation to better match actual needs and improves the rationality of power supply.

[0059] The distribution box receives power demand signals from the loads of each circuit and analyzes the power values ​​in the signals to determine the circuit's required power. By comparing the total demand (total circuit power demand) with the total supply capacity (total output power limit), it can determine whether the current power supply is sufficient. If the total circuit power demand is less than or equal to the total output power limit, all load demands can be met directly; if the total circuit power demand exceeds the total output power limit, power allocation is required to ensure that critical loads are prioritized within the power supply capacity.

[0060] This embodiment determines the basic priority index based on the load function type, clarifying the inherent importance of different loads and providing a basis for power allocation; it dynamically adjusts the current priority index based on time and operating conditions, making the priority adaptable to real-time needs and improving the flexibility of allocation; it determines the required power of the circuit based on the circuit limit and load demand, taking into account both safety and actual needs; by comparing the total demand with the total upper limit and allocating power according to the current priority, it can prioritize the power supply of important loads when power is insufficient, thus optimizing the overall power allocation mechanism and improving the reliability and resource utilization of the power distribution system.

[0061] One possible implementation of this application embodiment involves dynamically adjusting the base priority index of each loop based on time information and load condition information to obtain the current priority index of each loop, including: The basic priority of each loop is dynamically adjusted based on time information and preset time period priority mapping relationship to obtain the intermediate priority index of each loop. Based on load condition information, identify whether the load is running at full load or light load for a duration that reaches a preset duration. If so, adjust the intermediate priority index of the corresponding circuit to obtain the current priority index. The priority of the circuit containing the load running at full load is increased, and the priority of the circuit containing the load running at light load is decreased.

[0062] In this embodiment, a preset time-period priority mapping relationship is established, with corresponding rules for different time periods and priority adjustment coefficients. For example, the adjustment coefficient for the circuit containing streetlights is 1.3 during nighttime; the adjustment coefficient for the circuit containing charging piles during weekday morning peak hours is 1.2; and the adjustment coefficient for the circuit containing traffic lights during morning and evening peak hours is 1.5, etc. The adjustment coefficient for other time periods is 1, meaning no adjustment is made. This information is stored in the local configuration file of the distribution box. The preset time-period priority mapping relationship can be flexibly set according to actual needs, and this embodiment does not impose specific limitations. The intermediate priority index = basic priority index × adjustment coefficient of the corresponding time period.

[0063] Full load operation: The load's actual power is ≥90% of its rated power, indicating an urgent demand that must be prioritized. Light load operation: The load's actual power is ≤30% of its rated power, indicating a lower demand that can be prioritized. The preset duration is a threshold value used to determine whether the load is in a stable full load or light load state. The preset duration for full load is 10 minutes, and for light load it is 30 minutes (these can be flexibly modified through platform configuration).

[0064] When the duration of full-load operation reaches a preset duration, the intermediate priority index of the circuit containing the load is increased; when the duration of light-load operation reaches a preset duration, the intermediate priority index of the circuit containing the load is decreased. The increase and decrease ranges can be preset based on practical experience; optionally, the increase range is 0.15 and the decrease range is 0.1. The current priority index is recalculated periodically. If the full-load / light-load state disappears, it reverts to the intermediate priority index, ensuring that the priority matches the operating conditions in real time.

[0065] This embodiment adjusts the intermediate priority index based on time information and a preset time period mapping relationship, so that the priority can be adapted to the actual needs of different time periods, improving the timeliness of power allocation; the intermediate priority index is adjusted according to the duration of full load or light load operation to obtain the current priority index, so that the priority can reflect the real-time operating status of the load, enhancing the flexibility of allocation, and realizing dynamic optimization of priority as a whole, ensuring that power resources are tilted to the loads that need them more, and improving the operating efficiency of the power distribution system.

[0066] One possible implementation of this application embodiment involves allocating the total output power to each circuit based on the current priority index of each circuit to obtain the circuit output power of each circuit, including: The product of the current priority index and the power demand of each loop is calculated as the loop output power. The output power of each circuit is allocated sequentially from high to low according to its current priority index until the total output power allocation is completed, thus obtaining the output power of each circuit.

[0067] This embodiment determines the initial output power by calculating the product of the current priority index and the circuit's required power, combining priority with actual demand to provide a scientific basis for allocation; the total output power is allocated sequentially from high to low priority until completion, ensuring that high-priority loads receive power support first, and that resources can be rationally allocated when total power is limited, improving the power supply targeting and efficiency of the power distribution system, and ensuring the stable operation of critical loads.

[0068] One possible implementation of this application embodiment includes: When the distribution box receives a newly connected unknown load, it collects the operating characteristics of the unknown load under different output power. The operating characteristics are compared with the preset typical characteristic library to determine the load type of the unknown load and record the rated power of the unknown load.

[0069] In this embodiment, the operating characteristics include: voltage and current phase difference (to determine inductive / capacitive characteristics), current harmonic spectrum (the harmonic content of constant current load is usually <5%, while the third harmonic is prominent in inductive load), power factor variation curve with voltage (the power factor of inductive load increases with voltage, while that of capacitive load is the opposite), and current fluctuation amplitude during stable operation (fluctuation of constant current load is <2%, while the fluctuation of inductive load is larger during the start-up phase).

[0070] This embodiment collects the operating characteristics of newly connected unknown loads under different output power levels; compares the operating characteristics with a preset typical feature library to determine the load type and records the rated power, thereby realizing the automated identification and management of unknown loads and ensuring the safe and stable operation of newly connected loads.

[0071] This application provides a power distribution box, such as... Figure 2 As shown, it includes: a data acquisition module, a power regulation module, and a distribution management module. The data acquisition module is used to collect load information, power grid information, and environmental information. The power regulation module is used to output power according to a defined circuit output power.

[0072] This application provides an allocation management module, such as... Figure 3 As shown, Figure 3 The allocation management module 300 shown includes a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, for example, via a bus 302. Optionally, the allocation management module 300 may also include a transceiver 304. It should be noted that in practical applications, the transceiver 304 is not limited to one type, and the structure of this allocation management module 300 does not constitute a limitation on the embodiments of this application.

[0073] Processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 301 may also be a combination that implements computational functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0074] Bus 302 may include a pathway for transmitting information between the aforementioned components. Bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 302 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 3 The symbol is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0075] The memory 303 may be a ROM (Read Only Memory) or other type of static storage device capable of storing static information and instructions, RAM (Random Access Memory) or other type of dynamic storage device capable of storing information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0076] The memory 303 is used to store the application code that executes the solution of this application, and its execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the content shown in the aforementioned embodiment of the power distribution and management method based on an outdoor distribution box.

[0077] Figure 3 The allocation management module shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0078] This application provides a computer-readable storage medium storing a computer program that, when run on a computer, enables the computer to execute the contents shown in the aforementioned embodiment of the power distribution and management method based on an outdoor distribution box.

[0079] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0080] This application provides a computer program product, including a computer program that, when executed by a processor, implements the content shown in the aforementioned embodiment of the power distribution and management method based on an outdoor distribution box.

[0081] The above are only some embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A power distribution and management method based on an outdoor distribution box, characterized in that, include: Acquire power grid information, environmental information, and load information of each circuit connected to the distribution box; wherein, the load information includes load type, load rated power, and load operating condition information, and the load type includes: inductive load, capacitive load, and constant current load; The upper limit of the total output power of the distribution box is determined based on the power grid information; The circuit power limit for each circuit is determined based on the environmental information, the load type, the rated power of the load, and the load operating condition information. Based on the total output power limit, the circuit power limit, and the distribution box determining the circuit output power of each circuit according to the received load power demand signal, the power adjustment module built into the distribution box is controlled to output power according to the circuit output power.

2. The power distribution and management method based on an outdoor distribution box according to claim 1, characterized in that, The power grid information includes the baseline power limit of the incoming power grid, peak and valley information of the power grid, power grid frequency, and harmonic voltage distortion rate; determining the total output power limit of the distribution box based on the power grid information includes: The first power upper limit is obtained by adjusting the reference power upper limit based on the power grid peak-valley information; Determine the frequency difference between the power grid frequency and the standard frequency range, and adjust the first power upper limit based on the frequency difference and the power limiting mechanism to obtain the second power upper limit; When the number of times the harmonic voltage distortion rate exceeds the preset distortion rate threshold within the preset time window reaches a preset number, the second power limit is adjusted based on the harmonic suppression mechanism to obtain the total output power limit of the distribution box.

3. The power distribution and management method based on an outdoor distribution box according to claim 1, characterized in that, The environmental information includes temperature and humidity information; determining the circuit power limit for each circuit based on the environmental information, the load type, the rated power of the load, and the load operating condition information includes: Based on the temperature information, the rated power of the load in the circuit containing the inductive load is adjusted to obtain the first rated power of the load; it is determined whether the first rated power of the load meets the starting requirements of the inductive load. If it does, the first rated power of the load is used as the circuit power limit of the corresponding circuit. Based on the humidity information, adjust the rated power of the load in the circuit where the capacitive load is located to obtain the second rated power of the load; obtain the grid power factor, and determine whether the second rated power of the load meets the reactive power compensation for the capacitive load based on the grid power factor. If it does, then the second rated power of the load is used as the circuit power limit of the corresponding circuit. The circuit power limit is obtained by adjusting the rated power of the circuit containing the constant current load based on a preset constant current ratio. The circuit power limit of the circuit containing the constant current load is higher than the rated power of the circuit containing the constant current load. Monitor whether there is an overload circuit in each circuit connected to the distribution box. If so, adjust the circuit power limit of the overload circuit based on the actual circuit power of the overload circuit.

4. The power distribution and management method based on an outdoor distribution box according to claim 1, characterized in that, The process of determining the circuit output power of each circuit based on the total output power limit, the circuit power limit, and the distribution box according to the received load power demand signal includes: Obtain the load function type of each loop, and determine the basic priority index of each loop based on the load function type; Obtain time information and load condition information, and dynamically adjust the basic priority index of each loop based on the time information and load condition information to obtain the current priority index of each loop; The required power of each loop is determined based on the loop power limit and the load power demand signal. The total circuit demand power is obtained by calculating the sum of the circuit demand power of each circuit connected to the distribution box, and then comparing the total output power limit with the total circuit demand power. If the total output power limit is less than the total circuit demand power, then the total output power is allocated to each circuit based on the current priority index of each circuit to obtain the circuit output power of each circuit.

5. The power distribution and management method based on an outdoor distribution box according to claim 4, characterized in that, The process of dynamically adjusting the base priority index of each loop based on the time information and the load condition information to obtain the current priority index of each loop includes: Based on the time information and the preset time period priority mapping relationship, the basic priority of each loop is dynamically adjusted to obtain the intermediate priority index of each loop. Based on the load condition information, it is identified whether the duration of full-load or light-load operation has reached a preset duration. If so, the intermediate priority index of the corresponding circuit is adjusted to obtain the current priority index. The priority adjustment method for the circuit containing the full-load load is to increase, and the priority adjustment method for the circuit containing the light-load load is to decrease.

6. The power distribution and management method based on an outdoor distribution box according to claim 4, characterized in that, The current priority index based on each loop is used to allocate the total output power to each loop to obtain the loop output power of each loop, including: The product of the current priority index and the power demand of each loop is calculated as the loop output power. The output power of each circuit is allocated sequentially from high to low according to its current priority index until the total output power allocation is completed, thus obtaining the output power of each circuit.

7. The power distribution and management method based on an outdoor distribution box according to claim 1, characterized in that, The method further includes: When the distribution box receives a newly connected unknown load, it collects the operating characteristics of the unknown load under different output power. The operating characteristics are compared with a preset typical characteristic library to determine the load type of the unknown load and record the rated power of the unknown load.

8. A distribution box, characterized in that, include: Data acquisition module, power regulation module, and distribution management module; The data acquisition module is used to collect load information, power grid information, and environmental information; The power regulation module is used to output power according to a determined circuit output power. The distribution management module is used to execute the power distribution and management method based on an outdoor distribution box as described in any one of claims 1-7.

9. The distribution box according to claim 8, characterized in that, The allocation management module includes: At least one processor; Memory; At least one application, wherein the at least one application is stored in memory and configured to be executed by at least one processor, the at least one application being configured to: perform the power distribution and management method based on an outdoor distribution box as described in any one of claims 1-7.

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