Hybrid power distribution intelligent power saving system based on electromagnetic balance

Abstract

The invention relates to the technical field of power distribution, and relates to a hybrid power distribution intelligent power saving system based on electromagnetic balance. A dynamic load demand is generated through multi-source fusion of environment illumination data and people flow distribution data, and precise power supply and distribution regulation and control of an illumination link are realized; through a priority switching mechanism of the multi-power-supply cooperative access module, power supply combinations of commercial power, renewable energy sources and energy storage devices are matched in real time, and a hybrid power distribution power adaptation network is constructed; through real-time comparison of voltage, frequency and phase parameters and electromagnetic balance state scoring analysis, the problem of electromagnetic unbalance in a multi-power-supply cooperative state is judged; dynamic compensation is carried out through the harmonic frequency of the inductance-capacitance resonance circuit, and closed-loop adjustment and abnormal energy dissipation of electromagnetic balance are achieved. According to the scheme, the technical bottleneck of a traditional system in multi-power-supply dynamic switching and electromagnetic interference suppression is broken through, and a systematic solution is provided for energy efficiency optimization and stable operation of a distributed lighting scene.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution, and relates to a hybrid distribution intelligent power-saving system based on electromagnetic balance. Background Art

[0002] With the intelligent development of urban infrastructure, the lighting hybrid distribution system faces the dual challenges of improving energy efficiency and stability. The traditional distribution system has problems such as large power consumption and lagging load response. Especially in the scenario of multi-source collaborative power supply, electromagnetic interference and power imbalance seriously affect the system stability. In recent years, the energy-saving technology based on electromagnetic balance has gradually become a research direction to solve such problems.

[0003] In the prior art, such as a hybrid power and lighting distribution intelligent power-saving system based on electromagnetic balance with the Chinese patent publication number CN113690886A, its core solution is: at the power supply input end, the power load and the lighting load are separately connected and supplied with power respectively; an adjustable output voltage is set in the lighting load system, and through an electromagnetic balance intelligent power-saving device, the output voltage of the lighting load is dynamically adjusted according to the output current of the power load, that is, when the power load current is small, the lighting voltage is lowered to achieve energy saving. This solution reduces the energy consumption of the lighting system to a certain extent through the linkage adjustment of the power load and the lighting load, and provides a new idea for hybrid distribution energy saving.

[0004] However, the prior art has the following problems: 1. The existing solution only relies on the power load current as the adjustment basis, does not integrate real-time data such as ambient light and population distribution, and cannot accurately perceive the actual needs of the lighting area, resulting in a low matching degree between power distribution and actual needs, making it difficult to achieve power supply on demand, and thus the energy-saving effect is limited.

[0005] 2. The prior art only performs voltage regulation for a single mains power supply, does not involve the collaborative access and intelligent distribution of multiple types of power sources such as solar energy, wind energy, and storage batteries, cannot give priority to using renewable energy, and is prone to problems such as voltage fluctuations and frequency out-of-step during power source switching, resulting in poor system stability and failing to fully exert the energy-saving potential of hybrid distribution.

[0006] 3. The existing solution only achieves energy saving by adjusting the lighting voltage, and does not comprehensively balance the frequency and phase parameters during multi-source hybrid power distribution. When there is harmonic interference or phase mismatch in the power source, it is easy to cause an increase in reactive power and an aggravation of equipment losses, and cannot fundamentally solve the problem of electromagnetic energy imbalance. Summary of the Invention

[0007] The present invention aims to solve the above problems in the prior art, and proposes a hybrid distribution intelligent power-saving system based on electromagnetic balance, which realizes the efficient utilization of electric energy and the improvement of system stability through dynamic monitoring, intelligent analysis and real-time compensation.

[0008] The technical solution adopted by the present invention to solve its technical problems is as follows: A hybrid distribution intelligent power-saving system based on electromagnetic balance, which includes a lighting area dynamic monitoring module, a multi-power collaborative access module, an electromagnetic balance analysis module, an electromagnetic compensation adjustment module, and a lighting database.

[0009] The connection method between the modules is as follows: The lighting area dynamic monitoring module is connected to the multi-power collaborative access module, the multi-power collaborative access module is connected to the electromagnetic balance analysis module, the electromagnetic balance analysis module is connected to the electromagnetic compensation adjustment module, and the lighting database is connected to the lighting area dynamic monitoring module.

[0010] The lighting area dynamic monitoring module is used to divide the target lighting area into several independently controlled lighting links, and through the Internet of Things sensors, it can collect the ambient light data and the crowd flow distribution data around each lighting link in real time, and generate the dynamic load power demand of each lighting link.

[0011] The multi-power collaborative access module is used to select the power supply combination for power supply from the power supplies accessed by the lighting links according to the dynamic load power demand, and establish the power supply connection between the power supply combination and the corresponding lighting link.

[0012] The electromagnetic balance analysis module is used to obtain the voltage, frequency, and phase parameters of each power supply in the power supply combination in real time, and compare them with the preset reference threshold values dynamically to judge the electromagnetic balance state of the power supply combination during hybrid power distribution.

[0013] The electromagnetic compensation adjustment module is used to adjust the resonance frequency of the inductance-capacitance resonance circuit according to the electromagnetic balance state, and dynamically compensate the electromagnetic field of the power supply combination.

[0014] The lighting database is used to store the set crowd flow and set personnel density of each lighting link under the reference light intensity.

[0015] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention collects the ambient light data and the crowd flow distribution data in real time through the lighting area dynamic monitoring module, generates the dynamic load power demand, and dynamically adjusts the energy supply strategy according to the actual lighting demand, realizing the precise control of the lighting load, improving the matching degree between the power distribution and the actual lighting demand, and improving the power utilization efficiency.

[0016] (2) The present invention selects the optimal power supply combination according to the dynamic load power demand through the multi-power collaborative access module, and adopts the means of multi-power priority matching and intelligent combination to realize seamless switching and smooth energy supply, improving the flexibility and adaptability of the system, and reducing the overall energy consumption and electricity cost.

[0017] (3) Through the comprehensive evaluation of voltage deviation degree, frequency deviation degree, and phase unbalance degree, the present invention determines the electromagnetic balance state by combining a weight scoring model, and adjusts the inductance-capacitance resonance frequency based on circuit theory to achieve synchronous compensation of voltage, frequency, and phase, solving the problem of poor electromagnetic stability in multi-power parallel connection, reducing the incidence of system electromagnetic imbalance, and improving the power transmission efficiency and system stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the system module connection of the present invention.

[0020] Figure 2 It is a schematic diagram of the steps for generating the dynamic load power demand of each lighting link in the present invention.

[0021] Figure 3 It is a schematic diagram of the steps for judging the selection of the power supply combination in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Now, various exemplary embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0023] The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Technologies, methods, and devices known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification.

[0024] In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0025] The present invention proposes a hybrid distribution intelligent power-saving system based on electromagnetic balance, which generates dynamic load demands through multi-source fusion of environmental light data and pedestrian flow distribution data to achieve precise power supply and distribution regulation of the lighting link; through the priority switching mechanism of the multi-power collaborative access module, it matches the power supply combinations of the mains power, renewable energy, and energy storage devices in real time to construct a power adaptation network for hybrid distribution; through real-time comparison of voltage, frequency, and phase parameters and electromagnetic balance state scoring analysis, it determines the electromagnetic imbalance problem under the condition of multi-power collaboration; through dynamic compensation of the harmonic frequency of the inductor-capacitor resonance circuit, it realizes the closed-loop regulation of electromagnetic balance and abnormal energy dissipation. This solution breaks through the technical bottlenecks of traditional systems in multi-power dynamic switching and electromagnetic interference suppression, and provides a systematic solution for energy efficiency optimization and stable operation of distributed lighting scenarios.

[0026] Please refer to Figure 1 As shown in the figure, the present invention provides a hybrid distribution intelligent power-saving system based on electromagnetic balance, including a lighting area dynamic monitoring module, a multi-power collaborative access module, an electromagnetic balance analysis module, an electromagnetic compensation adjustment module, and a lighting database. The connection method between the modules is as follows: the lighting area dynamic monitoring module is connected to the multi-power collaborative access module, the multi-power collaborative access module is connected to the electromagnetic balance analysis module, the electromagnetic balance analysis module is connected to the electromagnetic compensation adjustment module, and the lighting database is connected to the lighting area dynamic monitoring module.

[0027] The lighting area dynamic monitoring module is used to divide the target lighting area into several independently controlled lighting links, and through Internet of Things sensors, it collects the environmental light data and pedestrian flow distribution data around each lighting link in real time to generate the dynamic load power demands of each lighting link.

[0028] Furthermore, according to the functional layout of the target lighting area, the area is divided into several functional areas, each functional area is configured with an independently controlled lighting link, and each lighting link includes a group of lighting fixtures and their related control devices. For example, for a park area, its functional layout includes an entrance square, a walking path, a leisure area, a children's play area, a lake scenic area, and a parking lot, etc. Through functional zoning and independent link control, the system realizes the leap from "extensive lighting" to "fine energy efficiency management", taking into account economy, reliability, and user experience.

[0029] As Figure 2As shown in the figure, the steps for generating the dynamic load power demand of each lighting link are as follows: S1. Extract the number of people and population density in the coverage area of each lighting lamp from the pedestrian flow distribution data around each lighting link, perform light compensation analysis on them, and obtain the pedestrian flow compensation coefficient. By analyzing the pedestrian flow compensation coefficient, the reference light intensity is corrected, so that the lighting system can provide a matching light intensity according to the actual pedestrian flow situation, avoid the situation of too strong or too weak light, reasonably allocate lighting resources, and make the utilization of lighting system resources more targeted.

[0030] Among them, the number of people is counted by using devices such as infrared sensors and cameras installed around the lighting link to count the number of people entering the coverage area of each lighting lamp per unit time, so as to obtain the number of people in this area. For example, under a certain lighting link in a park area, the number of customers passing by per hour is the value of the number of people in this area.

[0031] The population density estimates the area of the coverage area of each lighting lamp according to the image information collected by the camera or the sensor layout in the area, and combines the counted number of people to calculate the number of people per unit area, that is, the population density.

[0032] The way to obtain the pedestrian flow compensation coefficient is as follows: perform deviation ratio analysis on the number of people and population density in the coverage area of each lighting lamp and the set number of people and set population density of the corresponding lighting link in the lighting database under the reference light intensity, and calculate the average value of the deviation ratio analysis results to obtain the pedestrian flow compensation coefficient.

[0033] Furthermore, the pedestrian flow deviation ratio is expressed as the ratio of the number of people in the coverage area of each lighting lamp to the set number of people, and the population density deviation ratio is expressed as the ratio of the population density in the coverage area of each lighting lamp to the set population density.

[0034] S2. Extract the light intensity and light uniformity in the coverage area of each lighting lamp from the ambient light data around each lighting link, perform data fusion analysis on them and the pedestrian flow compensation coefficient, and generate an ambient light compensation coefficient. By analyzing the ambient light compensation coefficient, the actual ambient light conditions and the lighting requirements of the pedestrian flow can be comprehensively considered, and more accurate control of the lighting system can be realized.

[0035] Among them, the light intensity uses a light sensor to obtain the light intensity at different positions in the coverage area of each lighting lamp in real time, and takes its average value as the light intensity in the coverage area of each lighting lamp; the light uniformity is evaluated by calculating the difference degree of the light intensity at different positions in the coverage area of each lighting lamp. For example, statistical methods such as standard deviation are used, and the smaller the value, the better the light uniformity.

[0036] The method for analyzing the environmental supplementary lighting coefficient is as follows: The reference light intensity of the corresponding lighting link is corrected according to the pedestrian flow compensation coefficient, and the deviation degree analysis is performed on the corrected light intensity and the light intensity in the coverage area of each lighting lamp to obtain the light intensity deviation degree in the coverage area of each lighting lamp. The corrected light intensity is the product of the pedestrian flow compensation coefficient and the reference light intensity of the corresponding lighting link.

[0037] The formula for analyzing the light intensity deviation degree is: , where is the light intensity deviation degree, which is used to quantify the deviation degree between the actual light intensity in the coverage area of the lighting lamp and the corrected light intensity. is the corrected light intensity. is the light intensity in the coverage area of the lighting lamp.

[0038] The difference between the light uniformity in the coverage area of each lighting lamp and the set required light uniformity is calculated, and the weighted analysis is performed on the normalized result of the difference and the light intensity deviation degree to obtain the environmental supplementary lighting coefficient. The weight factor of the light uniformity difference reflects the importance of the deviation of the light uniformity from the set requirement, and the weight factor is the normalized light uniformity difference divided by the sum of the normalized light uniformity difference and the light intensity deviation degree; the weight factor of the light intensity deviation degree reflects the importance of the deviation of the light intensity from the corrected intensity, and the weight factor is the difference between 1 and the weight factor of the light uniformity difference.

[0039] The normalized light uniformity difference can be obtained by calculating through the Z-score normalization formula. The Z-score normalization formula is prior art and will not be elaborated here.

[0040] S3. Combine the initial power in the coverage area of the lighting lamp, and perform coupling analysis on the environmental supplementary lighting coefficient and the pedestrian flow compensation coefficient in the coverage area of each lighting lamp to generate the dynamic load power demand of each lighting link.

[0041] The formula for the dynamic load power in the coverage area of each lighting lamp is , where is the dynamic load power demand. is the initial power in the coverage area of the lighting lamp, which is the power of the corresponding lighting link in the coverage area of the lighting lamp under the reference light intensity. is the environmental supplementary lighting coefficient, which reflects the adjustment degree of the environmental light deviation on the power. is the pedestrian flow compensation coefficient, which reflects the influence of the pedestrian flow data on the power. The formula first adjusts the initial power through to reflect the primary correction of the environmental supplementary lighting on the dynamic load power; then through , and then through Perform a secondary adjustment on the dynamically loaded power after the first correction, incorporate the pedestrian flow compensation factor, and finally obtain the dynamically loaded power demand. Then, accumulate the dynamically loaded power of the coverage areas of the lighting lamps in each lighting link to obtain the dynamically loaded power demand of each lighting link.

[0042] The present invention can collect ambient light data and pedestrian flow distribution data in real time through the lighting area dynamic monitoring module, generate the dynamically loaded power demand, and dynamically adjust the energy supply strategy according to the actual lighting demand, realizing precise control of the lighting load, improving the matching degree between power distribution and the actual lighting demand, and improving the electric energy utilization efficiency.

[0043] The multi-power collaborative access module is used to select a power supply combination from the power supplies accessed by the lighting link according to the dynamically loaded power demand, and establish a power supply connection between the power supply combination and the corresponding lighting link.

[0044] The specific content of the multi-power collaborative access module is as follows: screen the load demand levels according to the dynamically loaded power demands of each lighting link, screen the power supply groups adapted to the load demand levels from the power supplies accessed by each lighting link, record them as the adapted power supply groups, match the priorities of all the power supplies in the adapted power supply groups according to the power supply type priority setting rule, and select the power supply combination by combining the priority and the dynamically loaded power demand.

[0045] The load demand level screening method is to match the dynamically loaded power demands of each lighting link with the power ranges corresponding to each load demand level to obtain the load demand levels of each lighting link. It can accurately match the power supply combinations for the lighting links with different load demands, and avoid problems such as energy waste or insufficient power supply caused by the mismatch between the power supply and the load.

[0046] The power supply types include but are not limited to: energy storage power supply, renewable energy, and commercial power. The power supply type priority setting rule can be set such that the energy storage power supply has the highest priority, the renewable energy has the second highest priority, and the commercial power has the lowest priority.

[0047] As Figure 3 shown, the selection of the power supply combination by combining the priority and the dynamically loaded power demand specifically includes: screening the power supply with the highest priority from the priorities of all the power supplies in the adapted power supply group, comparing its rated output power with the dynamically loaded power demand. If the output power of the highest priority power supply is greater than or equal to the dynamically loaded power demand, it indicates that the highest priority power supply meets the dynamically loaded power demand, and the highest priority power supply is used as the power supply combination. Otherwise, the power supplies are combined in increasing order of priority until the combined power supplies meet the dynamically loaded power demand, and the combined power supplies are used as the power supply combination.

[0048] Through the multi - power collaborative access module, the present invention selects the optimal power supply combination according to the dynamic load power demand, and adopts the means of multi - power priority matching and intelligent combination to achieve seamless switching and smooth energy supply, improve the flexibility and adaptability of the system, and reduce the overall energy consumption and electricity cost.

[0049] The electromagnetic balance analysis module is used to obtain the voltage, frequency and phase parameters of each power supply in the power supply combination in real time, and compare them with the preset reference threshold values dynamically to judge the electromagnetic balance state of the power supply combination during hybrid power distribution.

[0050] The specific content of the electromagnetic balance analysis module is as follows: analyze the deviation degree between the voltage, frequency and phase parameters of each power supply in the power supply combination and the preset reference threshold values to obtain the voltage deviation degree, frequency deviation degree and phase unbalance degree. Substitute the voltage deviation degree, frequency deviation degree and phase unbalance degree into the set weight scoring model to output the electromagnetic balance state score. Compare the electromagnetic balance state scores of each power supply in the power supply combination with the set balance state score threshold to obtain the electromagnetic balance state of each power supply. Determine the electromagnetic balance state of the power supply combination during hybrid power distribution according to the electromagnetic balance state of each power supply. The purpose is to timely detect possible abnormal power supply parameters during the power supply process, ensure the stable operation of the power supply combination during hybrid power distribution, and avoid affecting the normal operation of electrical equipment such as lighting systems due to excessive power supply parameter fluctuations.

[0051] The judgment method for the electromagnetic balance state of each power supply is as follows: if the electromagnetic balance state score of the power supply is greater than or equal to the set balance state score threshold, the electromagnetic balance state of the power supply is in a balanced state; otherwise, the electromagnetic balance state of the power supply is in an unbalanced state.

[0052] The analysis formula for the voltage deviation degree is , where is the voltage deviation degree, is the real - time voltage of the power supply, is the preset reference voltage threshold, which is used as a reference standard for measuring voltage deviation. For example, the common single - phase voltage is 220V. Among them, ensures that the deviation value is positive. The larger the deviation value, the greater the power supply deviation degree. Divide by to convert the deviation into a relative value, which is convenient for horizontal comparison between systems with different voltage levels.

[0053] The analysis formula for the frequency deviation degree is , where is the frequency deviation degree, is the real - time frequency of the power supply, is the preset reference frequency threshold, such as the grid standard frequency , is a preset allowable frequency deviation value, that is, the allowable frequency fluctuation range of the system, such as . Among them calculate the deviation amount exceeding the allowable range. If the actual deviation is within the allowable range, such as , then is negative or zero, indicating that no compensation is required; if it exceeds the allowable range, such as , then is positive, indicating that frequency compensation needs to be started, to avoid negative value interference in judgment.

[0054] The analysis formula for the phase unbalance degree is , where is the phase unbalance degree, are the phase angles of the A, B, and C phases of the power supply respectively, is the preset reference phase threshold, usually set to . Among them, the phase difference between any two phases in the three-phase system should be close to 120°, and the maximum value is taken to reflect the most serious imbalance situation. Through calculate the relative deviation and multiply by 100% to quantify the imbalance degree.

[0055] Set the weight scoring model as , where is the electromagnetic balance state score, is the total score of the electromagnetic balance state, are the weights of the voltage deviation degree, frequency deviation degree, and phase unbalance degree respectively. The setting of the weights is obtained based on historical data analysis. The proportions of voltage, frequency, and phase imbalance in the system fault records of the statistical target lighting area are counted, and the initial weights are set according to the proportions.

[0056] It should be noted that the judgment rule for the electromagnetic balance state of the power supply combination during hybrid power distribution is: if the electromagnetic balance states of all power supplies are in a balanced state, the electromagnetic balance state of the power supply combination during hybrid power distribution is balanced; if the electromagnetic balance state of any power supply is in an unbalanced state, the electromagnetic balance state of the power supply combination during hybrid power distribution is unbalanced.

[0057] The electromagnetic compensation adjustment module is used to adjust the resonance frequency of the inductance-capacitance resonance circuit according to the electromagnetic balance state and dynamically compensate the electromagnetic field of the power supply combination.

[0058] The specific content of the electromagnetic compensation adjustment module is as follows: when the electromagnetic balance state of the power supply combination during hybrid power distribution is unbalanced, determine the power supply that needs to be compensated in the power supply combination and its compensation parameters, such as one or more of voltage, frequency, or phase.

[0059] Further, the method for determining the compensation parameter is as follows: If the voltage deviation degree is greater than the set voltage deviation degree threshold, then the voltage is the compensation parameter.

[0060] If the frequency deviation degree is greater than the set frequency deviation degree threshold, then the frequency is the compensation parameter.

[0061] If the phase unbalance degree is greater than the set phase unbalance degree threshold, then the phase is the compensation parameter.

[0062] The setting methods of the voltage deviation degree threshold, the frequency deviation degree threshold, and the phase unbalance degree threshold are as follows: According to the power industry standards, such as the allowable deviation specifications for voltage and frequency and the electrical characteristics of lighting equipment, such as the rated voltage range, the frequency adaptation range, and the phase balance requirements, etc., determine the maximum allowable deviation of each parameter during the normal operation of the equipment through experimental tests. For example, set the voltage deviation degree threshold with reference to the allowable deviation of the grid voltage of ±5%; set the frequency deviation degree threshold according to the standard of the grid frequency in China of 50Hz ± 0.5Hz; set the phase unbalance degree threshold according to the ideal difference of 120° of the three-phase electricity phase, combined with the tolerance ability of the equipment. For example, if it exceeds 10%, it is regarded as unbalanced.

[0063] By adjusting the resonance frequency of the inductance-capacitance resonance circuit of the demand compensation power supply, dynamically compensate the electromagnetic field of the power supply combination.

[0064] After adjusting the resonance frequency, once again monitor the electromagnetic balance state of the power supply combination through the electromagnetic balance analysis module. If the electromagnetic balance state has not reached balance, repeat the above steps and continue the compensation adjustment until the electromagnetic balance state reaches balance.

[0065] It should be noted that the specific adjustment method for adjusting the resonance frequency of the inductance-capacitance resonance circuit of the demand compensation power supply is as follows: Analyze the difference between the compensation parameter corresponding to the power supply to be compensated and its corresponding preset reference threshold to obtain the compensation parameter difference corresponding to the power supply to be compensated.

[0066] According to the relevant formulas in circuit theory, analyze the relationship between the compensation parameter and the inductance and capacitance. According to the compensation parameter difference and the relationship between the compensation parameter and the inductance and capacitance, calculate the value of the inductance or capacitance to be adjusted, and obtain the resonance frequency of the resonance circuit to be changed according to the resonance frequency calculation formula.

[0067] Further, according to the relevant formulas in circuit theory, analyze the relationship between the compensation parameter and the inductance and capacitance. For example: The relationship between voltage and inductance: In an AC circuit, the voltage across the inductance is related to the inductance value and the rate of change of current. The formula is , where is the voltage across the inductance, is the inductance value, is the rate of change of current.

[0068] Relationship between voltage and capacitance: The voltage across a capacitor is related to the charge quantity and capacitance value. The formula is , where is the voltage across the capacitor, Q is the charge quantity, and C is the capacitance value.

[0069] Relationship between phase and inductance, capacitance: In an AC circuit, inductance and capacitance affect the phase characteristics of the circuit. Inductance causes the current to lag behind the voltage, while capacitance causes the current to lead the voltage. The formula is , where is the inductive reactance, , is the capacitive reactance, , is the resistance.

[0070] Resonant frequency calculation formula: In a resonant circuit, the relationship formula between the resonant frequency and inductance and capacitance is , where is the resonant frequency, L is the inductance value, and C is the capacitance value.

[0071] Through the comprehensive evaluation of voltage deviation degree, frequency deviation degree, and phase unbalance degree, combined with the weight scoring model to determine the electromagnetic balance state, and based on circuit theory to adjust the inductance-capacitance resonant frequency, the present invention realizes the synchronous compensation of voltage, frequency, and phase, solves the problem of poor electromagnetic stability in multi-power parallel connection, reduces the incidence rate of system electromagnetic imbalance, and improves the power transmission efficiency and system stability.

[0072] Illumination database, used to store the set pedestrian flow and set population density of each illumination link under the reference illumination intensity. The reference illumination intensity corresponding to each illumination link sets the minimum illumination intensity of different regions according to the "Urban Lighting Design Standard", and is evaluated by experts in related fields according to the lighting requirements of the functional area, and the set pedestrian flow and population density are determined by combining experience and professional knowledge.

[0073] The above formulas are all dimensionless and take their numerical values for calculation. The formula is obtained by collecting a large amount of data for software simulation to obtain a formula closest to the actual situation. The preset parameters in the formula are set by those skilled in the art according to the actual situation.

[0074] The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product.

[0075] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented in electronic hardware, or in a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0076] In addition, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically alone, or two or more modules can be integrated into one module.

[0077] As described above, the above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all of them should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

[0078] Finally, the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hybrid power distribution intelligent power saving system based on electromagnetic balance, characterized in that: include: The lighting area dynamic monitoring module divides the target lighting area into several independently controlled lighting links, collects the ambient light data and crowd distribution data around each lighting link through the IoT sensor, and generates the dynamic load power demand of each lighting link; The multi-power collaborative access module selects a power supply combination from the lighting link access power supply according to the dynamic load power demand, and establishes a power supply connection between the power supply combination and the corresponding lighting link; The electromagnetic balance analysis module obtains the voltage, frequency and phase parameters of each power supply in the power supply combination, and dynamically compares them with the preset reference threshold to determine the electromagnetic balance state of the power supply combination during mixed power distribution; The electromagnetic compensation adjustment module adjusts the resonant frequency of the inductor-capacitor resonant circuit according to the electromagnetic balance state, and dynamically compensates the electromagnetic field of the power supply combination.

2. According to claim 1, a hybrid power distribution intelligent power saving system based on electromagnetic balance is characterized by: The dynamic load power demand of each lighting link is generated as follows: Extract the flow of people and density of people in the area covered by each lighting lamp from the flow distribution data around each lighting link, perform illumination compensation analysis on it, and obtain the flow compensation coefficient; The light intensity and uniformity of each lighting lamp coverage area are extracted from the ambient light data around each lighting link, and the data is fused and analyzed with the crowd compensation coefficient to generate the ambient fill light coefficient. Combined with the initial power of the lighting coverage area, the ambient fill light coefficient of each lighting coverage area and the crowd compensation coefficient are coupled and analyzed to generate the dynamic load power demand of each lighting link.

3. According to claim 2, a hybrid power distribution intelligent power saving system based on electromagnetic balance is characterized in that: The flow compensation coefficient is obtained as follows: The deviation ratio analysis is performed on the pedestrian flow and personnel density in the areas covered by each lighting lamp and the set pedestrian flow and set personnel density of the corresponding lighting link under the reference light intensity in the lighting database, and the deviation ratio analysis results are averaged to obtain the pedestrian flow compensation coefficient.

4. The hybrid power distribution intelligent power saving system based on electromagnetic balance according to claim 3 is characterized by: The analysis method of the ambient fill light coefficient is as follows: The reference light intensity of the corresponding lighting link is corrected according to the crowd compensation coefficient, and the deviation between the corrected light intensity and the light intensity of the area covered by each lighting lamp is analyzed to obtain the light intensity deviation of the area covered by each lighting lamp; The difference between the illumination uniformity of the area covered by each lighting lamp and the set required illumination uniformity is calculated, and the difference is weightedly analyzed with the illumination intensity deviation to obtain the ambient fill light coefficient.

5. The hybrid power distribution intelligent power saving system based on electromagnetic balance according to claim 1 is characterized by: The specific contents of the multi-power collaborative access module are as follows: The load demand level is screened according to the dynamic load power demand of each lighting link, and the power supply group adapted to the load demand level is centrally screened from the power supply accessed by each lighting link, which is recorded as the adapted power supply group. The priority of all power supplies in the adapted power supply group is matched according to the power supply type priority setting rules, and the power supply combination is selected based on the priority and dynamic load power demand.

6. The hybrid power distribution intelligent energy saving system based on electromagnetic balance according to claim 5 is characterized by: The selecting of a power supply combination in combination with the priority and the dynamic load power requirement specifically includes: The highest priority power supply is selected from the priorities of all power supplies in the adapted power supply group, and its rated output power is compared with the dynamic load power requirement. If the output power of the highest priority power supply is greater than or equal to the dynamic load power requirement, it indicates that the highest priority power supply meets the dynamic load power requirement, and the highest priority power supply is used as the power supply combination. Otherwise, the power supplies are added in sequence according to the priority until the dynamic load power requirement is met, and the combined power supplies are used as the power supply combination.

7. The hybrid power distribution intelligent energy saving system based on electromagnetic balance according to claim 1 is characterized by: The specific contents of the electromagnetic balance analysis module are as follows: The degree of deviation of the voltage, frequency and phase parameters of each power supply in the power supply combination from the preset reference threshold is analyzed to obtain the voltage deviation, frequency deviation and phase imbalance, which are then substituted into the set weight scoring model to output the electromagnetic balance state score, and the electromagnetic balance state score of each power supply in the power supply combination is compared with the set balance state score threshold to obtain the electromagnetic balance state of each power supply, and the electromagnetic balance state of the power supply combination during mixed power distribution is determined according to the electromagnetic balance state of each power supply.

8. The hybrid power distribution intelligent power saving system based on electromagnetic balance according to claim 7 is characterized by: The electromagnetic balance state determination rule of the power supply combination during mixed power distribution is: if the electromagnetic balance states of all power supplies are balanced, then the electromagnetic balance state of the power supply combination during mixed power distribution is balanced; if the electromagnetic balance state of any power supply is unbalanced, then the electromagnetic balance state of the power supply combination during mixed power distribution is unbalanced.

9. The hybrid power distribution intelligent energy saving system based on electromagnetic balance according to claim 1 is characterized by: The specific contents of the electromagnetic compensation adjustment module are as follows: When the electromagnetic balance state of the power supply combination is unbalanced during mixed power distribution, determine the power supply that needs to be compensated in the power supply combination and its compensation parameters, such as one or more of voltage, frequency or phase; Dynamically compensate the electromagnetic field of the power supply combination by adjusting the resonant frequency of the inductor-capacitor resonant circuit of the demand compensation power supply; After adjusting the resonant frequency, the electromagnetic balance state of the power supply combination is monitored again through the electromagnetic balance analysis module. If the electromagnetic balance state still does not reach a balance, repeat the above steps and continue to make compensation adjustments until the electromagnetic balance state reaches a balance.

10. The hybrid power distribution intelligent energy saving system based on electromagnetic balance according to claim 9, characterized in that: The resonant frequency of the inductor-capacitor resonant circuit of the demand compensation power supply is adjusted in the following specific adjustment method: Performing a difference analysis between the compensation parameter corresponding to the power source to be compensated and its corresponding preset reference threshold value to obtain the compensation parameter difference corresponding to the power source to be compensated; According to the relevant formulas in circuit theory, the relationship between the compensation parameters and the inductance and capacitance is analyzed, and the inductance or capacitance value that needs to be adjusted is calculated according to the compensation parameter difference and the relationship between the compensation parameters and the inductance and capacitance. The resonant frequency of the resonant circuit that needs to be changed is obtained according to the resonant frequency calculation formula.

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