Intelligent control system for photovoltaic street lamp

Abstract

The invention discloses an intelligent control system for a photovoltaic street lamp, and relates to the technical field of photovoltaic street lamp control. The system comprises a plurality of photovoltaic street lamps and an intelligent scheduling module, each photovoltaic street lamp comprises an acquisition module, an execution module, a power generation module, an energy storage module and a lighting module, the power generation module converts light energy in the daytime into electric energy and stores the electric energy in the energy storage module, and the energy storage module transmits the stored electric energy to the lighting module at night. The power generation module is used for generating electric energy, the energy storage module is used for storing the electric energy, the illumination module is used for converting the electric energy into light energy to illuminate a road, and the acquisition module is used for acquiring generated power information of the power generation module, residual electric quantity information of the energy storage module and load power consumption information of the illumination module. The energy storage gap between the photovoltaic street lamps can be continuously optimized, so that the illumination gap caused by the lack of electric energy of individual photovoltaic street lamps is avoided, and the road illumination quality is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic street lamp control, and in particular to an intelligent control system for photovoltaic street lamps. Background Art

[0002] Photovoltaic street lights are street lights that use solar energy for lighting. They combine photovoltaic technology and lighting technology; photovoltaic technology is a technology that uses semiconductor materials to convert solar energy into electrical energy. In photovoltaic street lights, photovoltaic panels are usually used to absorb solar energy and convert it into direct current, storing electrical energy during the day for lighting at night. In terms of lighting technology, photovoltaic street lights usually use LED lamps as light sources. LEDs have the characteristics of excellent lighting effects and energy saving. Combined with photovoltaic power generation, a self-sufficient lighting system can be achieved.

[0003] The lighting effect of photovoltaic street lamps is mainly affected by photovoltaic panels and energy storage devices. Due to the different distribution locations of photovoltaic street lamps, photovoltaic panels will be affected by many factors such as light intensity, obstructions, and light angles, which indirectly leads to different photovoltaic street lamps having different power generation during the day. Some street lamps with too low photovoltaic power generation cannot store enough electricity to meet the lighting needs at night. Therefore, designing an intelligent control system to realize power scheduling between street lamps to ensure lighting needs is a technical problem that technical personnel in this field need to solve. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an intelligent control system for photovoltaic street lamps, which solves the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent control system for photovoltaic street lamps, including n photovoltaic street lamps and an intelligent scheduling module, wherein the photovoltaic street lamps include a collection module, an execution module, a power generation module, an energy storage module and a lighting module; The power generation module converts light energy during the daytime into electrical energy and stores it in the energy storage module. The energy storage module transmits the stored electrical energy to the lighting module at night, and the lighting module converts the electrical energy into light energy to illuminate the road. The acquisition module acquires the power generation information of the power generation module, the remaining power information of the energy storage module and the load power consumption information of the lighting module, and uploads the acquired power generation information, load power consumption information and remaining power information to the intelligent scheduling module; The intelligent scheduling module analyzes the current data information and sends the scheduling strategy to the execution module. The execution module performs scheduling control on the energy storage module and the lighting module respectively according to the scheduling strategy. The execution result after the scheduling control of the execution module is collected again by the acquisition module and fed back to the intelligent scheduling module. Among them, the intelligent scheduling module divides the time interval of daytime power generation of the power generation module into two stages, and the two stages of the power generation module are respectively the first stage power generation analysis and the second stage power generation analysis. The intelligent scheduling module is divided into two scheduling strategies according to the time of daytime power generation of the energy storage module, and the two scheduling strategies of the energy storage module are respectively the first-level energy storage scheduling strategy and the second-level energy storage scheduling strategy. The intelligent scheduling module is also divided into two scheduling strategies according to the time of night lighting of the energy storage module, and the two scheduling strategies of the energy storage module are respectively the third-level energy storage scheduling strategy and the fourth-level energy storage scheduling strategy. The intelligent scheduling module is divided into two scheduling strategies according to the time of night lighting of the lighting module, and the two scheduling strategies of the lighting module are respectively the first-level lighting scheduling strategy and the second-level lighting scheduling strategy; The intelligent scheduling module divides all photovoltaic street lights into two categories: single photovoltaic street lights and multiple photovoltaic street lights. When the number of photovoltaic street lights is greater than or equal to two, it is a multiple photovoltaic street light. The intelligent scheduling module classifies several photovoltaic street lights to facilitate the execution module to execute the scheduling strategy; The first-level energy storage scheduling strategy of the second-stage power generation analysis is carried out simultaneously, the third-level energy storage scheduling strategy and the first-level lighting scheduling strategy are carried out simultaneously, and the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy are carried out simultaneously.

[0006] Furthermore, the specific process of the first stage power generation analysis is as follows: A real-time curve chart is generated based on the power generation information with the time unit being seconds as nodes, and the power generation fluctuation rate of the current power generation module is calculated according to the following formula group: in, and are the current power generation and the power generation in the previous second respectively. is the logarithmic power difference per second, is the number of each data point in the curve graph, is the average value of the data points in the curve graph, To find out the real-time curve volatility; The power generation module in each photovoltaic street lamp is affected by factors such as light intensity, light angle, obstructions and degree of damage to the photovoltaic panel. The curve fluctuation rate of each power generation module is different. In the first stage of power generation analysis, the intelligent scheduling module predicts the power generation of each photovoltaic street lamp and the time node for entering the second stage of power generation analysis according to the curve fluctuation rate of each power generation module. In the second stage of power generation analysis, the intelligent scheduling module calculates the power generation of each photovoltaic street lamp in the second stage of power generation analysis in accordance with the method steps in the first stage of power generation analysis. The first-level energy storage scheduling strategy is sent to the execution module according to the predicted power generation in the first-stage power generation analysis. When the second-stage power generation analysis starts, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module. The intelligent scheduling module sends the second-level energy storage scheduling strategy to the execution module according to the predicted power generation in the second-stage power generation analysis. Before the second-stage power generation analysis ends and the first-level lighting scheduling strategy starts, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module.

[0007] Furthermore, before the start of the second stage of power generation analysis, the acquisition module feeds back the actual power generation and predicted power generation of each power generation module to the intelligent scheduling module. The intelligent scheduling module further refines the time interval of the first stage power generation analysis according to the fed-back power generation error value to obtain a refined time interval. The time interval is 10 minutes. In each refined time interval, the power generation is multiplied by different weight coefficients to reduce the error of the power generation prediction of the intelligent scheduling module. Through continuous feedback correction, the intelligent scheduling module can better predict the power generation of each power generation module in different time periods.

[0008] Furthermore, in the first stage of power generation analysis, the intelligent scheduling module brings the power generation predicted by each power generation module and the power generation predicted by its two adjacent power generation modules into the following formula group for calculation: in, The power generation predicted by the current power generation module, The power generation predicted by the previous power generation module, The power generation predicted for the next power generation module, is the difference between the adjacent power generation modules before and after the current power generation module, is the cumulative difference between the current power generation module and the adjacent power generation modules before and after; value is less than or equal to zero and When the value is greater than zero, the corresponding current power generation module is a single photovoltaic street lamp. Value and When the values ​​are all greater than zero, the corresponding current power generation module is the starting street lamp or the ending street lamp in the multi-photovoltaic street lamps, that is, the starting street lamp or the ending street lamp is the photovoltaic street lamp at the two ends of the multi-photovoltaic street lamps. Value and When the values ​​are all less than or equal to zero, the corresponding current power generation module is the middle street light among the multiple photovoltaic street lights excluding the starting street light and the ending street light.

[0009] Furthermore, in the first-level energy storage scheduling strategy implemented by the execution module, the electric energy transmission between the photovoltaic street lights is 16% of the transmission rate of the photovoltaic street light's own energy storage module, and the single photovoltaic street light and multiple photovoltaic street lights are divided into two states: peak and trough. The peak means that the power stored in the single photovoltaic street light and multiple photovoltaic street lights is greater than the power of the photovoltaic street lights on the adjacent two sides, and the trough means that the power stored in the single photovoltaic street light and multiple photovoltaic street lights is less than or equal to the power of the photovoltaic street lights on the adjacent two sides; when the single photovoltaic street light is in the peak state, the exponential function is substituted according to its own power to evaluate, and the power is transmitted to the photovoltaic street lights in the left and right directions according to the power of the result, and the exponent in the exponential function is 0.5; it should be noted that the more the number of photovoltaic street lights is separated, the less electric energy is transmitted; in addition, within the left and right power transmission coverage of the single photovoltaic street light, if there is a photovoltaic street light whose energy storage module power is higher than or equal to the single photovoltaic street light, the power transmission range stops from the photovoltaic street light with the higher power; when the single photovoltaic street light is in the trough state, the left and right adjacent The photovoltaic street light transmits 20% of its own power to the single photovoltaic street light in the middle; when the multiple photovoltaic street lights are in the peak state, electric energy is transmitted to the single photovoltaic street light or multiple photovoltaic street lights in the left and right directions according to the exponential function, and the average value of the overall power of the multiple photovoltaic street lights is substituted into the exponential function for evaluation, and electric energy is transmitted to the single photovoltaic street light or multiple photovoltaic street lights in the left and right directions according to the power of the result, and the exponent in the exponential function is 0.3; in addition, within the coverage of the left and right power transmission of multiple photovoltaic street lights, if there is a photovoltaic street light energy storage module with a power higher than or equal to the average value of the overall power of the multiple photovoltaic street lights, the power transmission range stops from the photovoltaic street light with the higher power; when the multiple photovoltaic street lights are in the trough state, electric energy is transmitted from another multi-photovoltaic street light with a higher power closest to the left and right to the multi-photovoltaic street light in the trough state, and the multi-photovoltaic street light with a higher power transmits 15% of the average value of the overall power to the multi-photovoltaic street light in the trough state; when the power transmission is not completed, if the first-level energy storage scheduling strategy ends, the execution module controls the power transmission to stop execution.

[0010] Furthermore, in the secondary energy storage scheduling strategy implemented by the execution module, the power transmission between the photovoltaic street lamps is 95% of the transmission rate of the photovoltaic street lamp's own energy storage module. The secondary energy storage scheduling strategy is consistent with the primary energy storage scheduling strategy except for the different transmission rates.

[0011] Furthermore, in the three-level energy storage scheduling strategy, the electric energy transmission between the photovoltaic street lamps is 24% of the transmission rate of the photovoltaic street lamp's own energy storage module. The three-level energy storage scheduling strategy is consistent with the first-level energy storage scheduling strategy except for the different transmission rates. In the first-level lighting scheduling strategy, the execution module controls the lighting module in each photovoltaic street lamp to illuminate at 85% of the rated power, and reserves 15% of power redundancy to improve stability. Because the lighting module of each photovoltaic street lamp is affected by temperature, internal resistance and damaged components, the actual load power consumption information is different. The intelligent scheduling module calculates the time for the energy storage module to continuously provide electric energy based on the lighting module load power consumption information provided by the acquisition module. When half of the time for the energy storage module to continuously provide electric energy has passed, the intelligent scheduling module sends the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy to the execution module, and the execution module simultaneously executes the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy.

[0012] Furthermore, in the four-level energy storage scheduling strategy, when the difference in the remaining power of the energy storage modules between adjacent photovoltaic street lamps is greater than 10% of their own power, the energy storage module with high power transmits electric energy to the adjacent energy storage module with low power, and the electric energy transmission between the photovoltaic street lamps is 8% of the transmission rate of the photovoltaic street lamp's own energy storage module, and the energy storage modules between the remaining photovoltaic street lamps no longer transmit electric energy; in the secondary lighting strategy, the lighting module and the lighting module of the adjacent photovoltaic street lamp are illuminated at 75% and 50% of the rated power, respectively, and are alternately replaced every 1 hour. When the acquisition module collects the power generation information generated by the power generation module again, the intelligent scheduling module sends the termination of the four-level energy storage scheduling strategy and the secondary lighting strategy to the execution module, the execution module controls the lighting module to stop running, and the intelligent scheduling module re-enters the first stage of power generation analysis; if the acquisition module does not collect the power generation information generated by the power generation module and the remaining power of the energy storage module is less than 20%, the execution module also controls the lighting module to stop running.

[0013] The present invention has the following beneficial effects: 1. The intelligent control system for photovoltaic street lights can classify photovoltaic street lights by executing different scheduling strategies, and can continuously optimize the energy storage gap between each photovoltaic street light, thereby avoiding lighting gaps caused by lack of electricity in individual photovoltaic street lights and ensuring the quality of road lighting.

[0014] 2. The intelligent control system for photovoltaic street lamps can reduce the energy loss during the energy transmission process by changing the current of energy transmission. The implementation of lighting strategies can minimize the energy loss of the lighting module, increase the energy reserve of the energy storage module, and prevent insufficient power generation of the power generation module in the future.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is a system block diagram of an intelligent control system for photovoltaic street lamps according to the present invention; Figure 2 This is a system block diagram of the intelligent scheduling module and photovoltaic street lamps of the present invention; Figure 3 It is a flow chart of the scheduling strategy of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-3 , the present invention provides a technical solution: an intelligent control system for photovoltaic street lamps, including a number n of photovoltaic street lamps and an intelligent scheduling module, the photovoltaic street lamps including a collection module, an execution module, a power generation module, an energy storage module and a lighting module; The power generation module converts the light energy during the day into electrical energy and stores it in the energy storage module. The energy storage module transmits the stored electrical energy to the lighting module at night, and the lighting module converts the electrical energy into light energy to illuminate the road. The acquisition module collects the power generation information of the power generation module, the remaining power information of the energy storage module and the load power consumption information of the lighting module, and uploads the collected power generation information, load power consumption information and remaining power information to the intelligent scheduling module; The intelligent scheduling module analyzes the current data information and sends the scheduling strategy to the execution module. The execution module performs scheduling control on the energy storage module and the lighting module respectively according to the scheduling strategy. The execution result after the scheduling control of the execution module is collected again by the acquisition module and fed back to the intelligent scheduling module. Among them, the intelligent scheduling module divides the time interval of the power generation module during the day into two stages. The two stages of the power generation module are the first stage power generation analysis and the second stage power generation analysis. The intelligent scheduling module is divided into two scheduling strategies according to the time of the energy storage module generating electricity during the day. The two scheduling strategies of the energy storage module are the first-level energy storage scheduling strategy and the second-level energy storage scheduling strategy. The intelligent scheduling module is also divided into two scheduling strategies according to the time of the energy storage module lighting at night. The two scheduling strategies of the energy storage module are the third-level energy storage scheduling strategy and the fourth-level energy storage scheduling strategy. The intelligent scheduling module is divided into two scheduling strategies according to the time of the lighting module lighting at night. The two scheduling strategies of the lighting module are the first-level lighting scheduling strategy and the second-level lighting scheduling strategy. By implementing different scheduling strategies, the energy storage gap between each photovoltaic street lamp can be continuously optimized, thereby avoiding lighting gaps caused by lack of electricity in individual photovoltaic street lamps and ensuring the quality of road lighting.

[0020] The intelligent scheduling module divides all photovoltaic street lights into two categories: single photovoltaic street lights and multiple photovoltaic street lights. When the number of photovoltaic street lights is greater than or equal to two, it is a multiple photovoltaic street light. The intelligent scheduling module classifies several photovoltaic street lights to facilitate the execution module to execute the scheduling strategy; By classifying photovoltaic street lights, the intelligent dispatching module can further refine the target group of power dispatching, and further reduce the energy storage gap of each photovoltaic street light; In the second stage of power generation analysis, the first-level energy storage scheduling strategy is carried out simultaneously, the third-level energy storage scheduling strategy and the first-level lighting scheduling strategy are carried out simultaneously, and the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy are carried out simultaneously.

[0021] Among them, the specific process of the first stage power generation analysis is: A real-time curve chart is generated based on the power generation information with the time unit of seconds as the node, and the power generation fluctuation rate of the current power generation module is calculated according to the following formula group: in, and are the current power generation and the power generation in the previous second respectively. is the logarithmic power difference per second, is the number of each data point in the curve graph, is the average value of the data points in the curve graph, To find out the real-time curve volatility; The power generation module in each photovoltaic street lamp is affected by factors such as light intensity, light angle, obstructions and degree of damage to the photovoltaic panel. The curve fluctuation rate of each power generation module is different. In the first stage of power generation analysis, the intelligent scheduling module predicts the power generation of each photovoltaic street lamp and the time node for entering the second stage of power generation analysis based on the curve fluctuation rate of each power generation module. In the second stage of power generation analysis, the intelligent scheduling module calculates the power generation of each photovoltaic street lamp in the second stage of power generation analysis in accordance with the method steps in the first stage of power generation analysis. The first-level energy storage scheduling strategy is sent to the execution module according to the predicted power generation in the first-stage power generation analysis. At the beginning of the second-stage power generation analysis, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module. The intelligent scheduling module sends the second-level energy storage scheduling strategy to the execution module according to the predicted power generation in the second-stage power generation analysis. Before the end of the second-stage power generation analysis and the beginning of the first-level lighting scheduling strategy, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module.

[0022] Among them, before the start of the second stage of power generation analysis, the acquisition module feeds back the actual power generation and predicted power generation of each power generation module to the intelligent scheduling module. The intelligent scheduling module further refines the time interval of the first stage power generation analysis according to the fed-back power generation error value to obtain a refined time interval with an interval of 10 minutes. In each refined time interval, the power generation is multiplied by different weight coefficients to reduce the error of the power generation prediction of the intelligent scheduling module. Through continuous feedback correction, the intelligent scheduling module can better predict the power generation of each power generation module in different time periods.

[0023] Among them, in the first stage of power generation analysis, the intelligent scheduling module puts the predicted power generation of each power generation module and the predicted power generation of its two adjacent power generation modules into the following formula group for calculation: in, The power generation predicted by the current power generation module, The power generation predicted by the previous power generation module, The power generation predicted for the next power generation module, is the difference between the adjacent power generation modules before and after the current power generation module, is the cumulative difference between the current power generation module and the adjacent power generation modules before and after; value is less than or equal to zero and , the corresponding current power generation module is a single photovoltaic street lamp. Value and When the values ​​are all greater than zero, the corresponding current power generation module is the starting street lamp or the ending street lamp in the multi-photovoltaic street lamps, that is, the starting street lamp or the ending street lamp is the photovoltaic street lamp at the two ends of the multi-photovoltaic street lamps. Value and When the values ​​are all less than or equal to zero, the corresponding current power generation module is the middle street light among the multiple photovoltaic street lights excluding the starting street light and the ending street light.

[0024] Among them, the execution module implements the first-level energy storage scheduling strategy. The power transmission between photovoltaic street lights is 16% of the transmission rate of the photovoltaic street light's own energy storage module. The energy storage module has a longer power transmission time in the first-level energy storage scheduling strategy, which can reduce the transmission current to reduce power loss. There are two states of peak and trough in single photovoltaic street lights and multiple photovoltaic street lights. The peak is when the power stored in a single photovoltaic street light and multiple photovoltaic street lights is greater than the power of the photovoltaic street lights on the adjacent two sides. The trough is when the power stored in a single photovoltaic street light and multiple photovoltaic street lights is less than or equal to the power of the photovoltaic street lights on the adjacent two sides. The power of the lamp; when a single photovoltaic street lamp is in peak state, its own power is substituted into the exponential function for evaluation, and the power is transmitted to the photovoltaic street lamps in the left and right directions according to the power of the result, and the exponent in the exponential function is 0.5; it should be noted that the more photovoltaic street lamps there are, the less power is transmitted, that is, the power decreases exponentially with the longer the distance of power transmission, so as to avoid excessive power loss during the transmission process; in addition, within the coverage of the left and right power transmission of a single photovoltaic street lamp, if there is a photovoltaic street lamp energy storage module with a power higher than or equal to that of a single photovoltaic street lamp, the power transmission The transmission range stops from the photovoltaic street lamp with high power; when the single photovoltaic street lamp is in the trough state, the photovoltaic street lamps adjacent to the left and right transmit 20% of their own power to the single photovoltaic street lamp in the middle; when multiple photovoltaic street lamps are in the peak state, power is transmitted to the single photovoltaic street lamp or multiple photovoltaic street lamps in the left and right directions according to the exponential function, and the average value of the overall power of multiple photovoltaic street lamps is substituted into the exponential function for evaluation, and power is transmitted to the single photovoltaic street lamp or multiple photovoltaic street lamps in the left and right directions according to the power obtained, and the exponent in the exponential function is 0.3; in addition, when the power transmission coverage of multiple photovoltaic street lamps is Within the range, if there is a photovoltaic street lamp energy storage module with a power higher than or equal to the average power of the whole photovoltaic street lamps, the power transmission range will stop from the photovoltaic street lamp with high power; when the multiple photovoltaic street lamps are in the trough state, power will be transmitted from another multi-photovoltaic street lamp with higher power that is closest to the left and right to the multi-photovoltaic street lamp in the trough state, and 15% of the average power of the whole power of the multi-photovoltaic street lamp with higher power will be transmitted to the multi-photovoltaic street lamp in the trough state; when the power transmission is not completed, if the first-level energy storage scheduling strategy ends, the execution module controls the power transmission to stop.

[0025] Among them, the execution module implements the secondary energy storage scheduling strategy. The power transmission between photovoltaic street lamps is 95% of the transmission rate of the photovoltaic street lamp's own energy storage module. The secondary energy storage scheduling strategy is consistent with the primary energy storage scheduling strategy except for the different transmission rates. In the secondary energy storage scheduling strategy, the energy storage module is only between the second-stage power generation analysis and the primary lighting strategy. It is on the eve of the evening lighting of the road, and the dispatchable power is limited. Therefore, it is necessary to increase the current of power transmission to complete the power scheduling as much as possible under the premise of increasing a certain amount of power loss.

[0026] Among them, in the three-level energy storage scheduling strategy, the power transmission between photovoltaic street lamps is 24% of the transmission rate of the photovoltaic street lamp's own energy storage module. The three-level energy storage scheduling strategy is consistent with the first-level energy storage scheduling strategy except for the different transmission rates. In the first-level lighting scheduling strategy, the execution module controls the lighting module in each photovoltaic street lamp to illuminate at 85% of the rated power, and reserves 15% of the power redundancy to improve stability. Because the lighting module of each photovoltaic street lamp is affected by temperature, internal resistance and damaged components, the actual load power consumption information is different. The intelligent scheduling module calculates the time for the energy storage module to continuously provide power based on the lighting module load power consumption information provided by the acquisition module. When half of the time for the energy storage module to continuously provide power has passed, the intelligent scheduling module sends the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy to the execution module, and the execution module simultaneously executes the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy; the third-level energy storage scheduling strategy and the fourth-level energy storage scheduling strategy are mainly to ensure lighting while reducing energy consumption as much as possible, improve the energy reserve of the energy storage module, and prevent the power generation module from being insufficient in the future.

[0027] Among them, in the four-level energy storage scheduling strategy, when the difference in the remaining power of the energy storage modules between adjacent photovoltaic street lights is greater than 10% of their own power, the energy storage module with high power transmits power to the adjacent energy storage module with low power, and the power transmission between photovoltaic street lights is 8% of the transmission rate of the photovoltaic street light's own energy storage module, and the energy storage modules between the remaining photovoltaic street lights no longer transmit power; in the secondary lighting strategy, the lighting module and the lighting module of the adjacent photovoltaic street light are illuminated at 75% and 50% of the rated power respectively, and are replaced alternately every 1 hour to reduce the loss of power while ensuring the quality of road lighting. When the acquisition module collects the power generation information generated by the power generation module again, the intelligent scheduling module sends the termination of the four-level energy storage scheduling strategy and the secondary lighting strategy to the execution module, the execution module controls the lighting module to stop running, and the intelligent scheduling module re-enters the first stage of power generation analysis; if the acquisition module does not collect the power generation information generated by the power generation module and the remaining power of the energy storage module is less than 20%, the execution module also controls the lighting module to stop running.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent control system for photovoltaic street lamps, comprising a plurality of photovoltaic street lamps and an intelligent scheduling module, wherein the photovoltaic street lamps comprise a collection module, an execution module, a power generation module, an energy storage module and a lighting module; The power generation module converts light energy during the daytime into electrical energy and stores it in the energy storage module. The energy storage module transmits the stored electrical energy to the lighting module at night. The lighting module converts the electrical energy into light energy to illuminate the road. The characteristics are: The acquisition module acquires the power generation information of the power generation module, the remaining power information of the energy storage module and the load power consumption information of the lighting module, and uploads the acquired power generation information, load power consumption information and remaining power information to the intelligent scheduling module; The intelligent scheduling module analyzes the current data information and sends the scheduling strategy to the execution module. The execution module performs scheduling control on the energy storage module and the lighting module respectively according to the scheduling strategy. The execution result after the scheduling control of the execution module is collected again by the acquisition module and fed back to the intelligent scheduling module. Among them, the intelligent scheduling module divides the time interval of daytime power generation of the power generation module into two stages, and the two stages of the power generation module are respectively the first stage power generation analysis and the second stage power generation analysis. The intelligent scheduling module is divided into two scheduling strategies according to the time of daytime power generation of the energy storage module, and the two scheduling strategies of the energy storage module are respectively the first-level energy storage scheduling strategy and the second-level energy storage scheduling strategy. The intelligent scheduling module is also divided into two scheduling strategies according to the time of night lighting of the energy storage module, and the two scheduling strategies of the energy storage module are respectively the third-level energy storage scheduling strategy and the fourth-level energy storage scheduling strategy. The intelligent scheduling module is divided into two scheduling strategies according to the time of night lighting of the lighting module, and the two scheduling strategies of the lighting module are respectively the first-level lighting scheduling strategy and the second-level lighting scheduling strategy; The intelligent scheduling module divides all photovoltaic street lights into two categories: single photovoltaic street lights and multiple photovoltaic street lights. When the number of photovoltaic street lights is greater than or equal to two, it is a multiple photovoltaic street light. The intelligent scheduling module classifies several photovoltaic street lights to facilitate the execution module to execute the scheduling strategy; The first-level energy storage scheduling strategy of the second-stage power generation analysis is carried out simultaneously, the third-level energy storage scheduling strategy and the first-level lighting scheduling strategy are carried out simultaneously, and the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy are carried out simultaneously.

2. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: The specific process of the first stage power generation analysis is as follows: A real-time curve chart is generated based on the power generation information with the time unit of seconds as the node, and the power generation fluctuation rate of the current power generation module is calculated according to the following formula group: in, and are the current power generation and the power generation in the previous second respectively. is the logarithmic power difference per second, is the number of each data point in the graph, is the average value of the data points in the curve graph, To find out the real-time curve volatility; The curve fluctuation rate of each power generation module is different. In the first stage power generation analysis, the intelligent scheduling module predicts the power generation of each photovoltaic street lamp and the time node for entering the second stage power generation analysis according to the curve fluctuation rate of each power generation module. In the second stage power generation analysis, the intelligent scheduling module calculates the power generation of each photovoltaic street lamp in the second stage power generation analysis in accordance with the method steps in the first stage power generation analysis. The first-level energy storage scheduling strategy is sent to the execution module according to the predicted power generation in the first-stage power generation analysis. When the second-stage power generation analysis starts, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module. The intelligent scheduling module sends the second-level energy storage scheduling strategy to the execution module according to the predicted power generation in the second-stage power generation analysis. Before the second-stage power generation analysis ends and the first-level lighting scheduling strategy starts, the execution module in each photovoltaic street lamp performs power scheduling on the energy storage module.

3. The intelligent control system for photovoltaic street lamps according to claim 2 is characterized in that: Before the start of the second stage of power generation analysis, the acquisition module feeds back the actual power generation and predicted power generation of each power generation module to the intelligent scheduling module. The intelligent scheduling module further refines the time interval of the first stage power generation analysis according to the fed-back power generation error value to obtain a refined time interval. In each refined time interval, the power generation is multiplied by different weight coefficients to reduce the error of the power generation prediction by the intelligent scheduling module. Through continuous feedback correction, the intelligent scheduling module can better predict the power generation of each power generation module in different time periods.

4. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: In the first stage of power generation analysis, the intelligent scheduling module brings the predicted power generation of each power generation module and the predicted power generation of its two adjacent power generation modules into the following formula group for calculation: in, The power generation predicted by the current power generation module, The power generation predicted by the previous power generation module, The power generation predicted for the next power generation module, is the difference between the adjacent power generation modules before and after the current power generation module, is the cumulative difference between the current power generation module and the adjacent power generation modules before and after; value is less than or equal to zero and When the value is greater than zero, the corresponding current power generation module is a single photovoltaic street lamp. Value and When the values ​​are all greater than zero, the corresponding current power generation module is the starting street light or the ending street light in the multi-photovoltaic street light. Value and When the values ​​are all less than or equal to zero, the corresponding current power generation module is the middle street light among the multiple photovoltaic street lights excluding the starting street light and the ending street light.

5. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: In the first-level energy storage scheduling strategy implemented by the execution module, the power transmission between the photovoltaic street lights is 16% of the transmission rate of the photovoltaic street light's own energy storage module. The single photovoltaic street light and multiple photovoltaic street lights are divided into two states: peak and trough. The peak means that the power stored in the single photovoltaic street light and multiple photovoltaic street lights is greater than the power of the photovoltaic street lights on the adjacent two sides, and the trough means that the power stored in the single photovoltaic street light and multiple photovoltaic street lights is less than or equal to the power of the photovoltaic street lights on the adjacent two sides. When the single photovoltaic street light is in the peak state, the exponential function is substituted according to its own power to evaluate, and the power is transmitted to the photovoltaic street lights in the left and right directions according to the power of the result. Within the left and right power transmission coverage of the single photovoltaic street light, if there is a photovoltaic street light whose energy storage module power is higher than or equal to the single photovoltaic street light, the power transmission range stops from the photovoltaic street light with the higher power. When the single photovoltaic street light is in the trough state, the photovoltaic street lights adjacent to the left and right transmit their own 20% of the electricity; when the multiple photovoltaic street lights are in the peak state, electric energy is transmitted to the single photovoltaic street light or multiple photovoltaic street lights in the left and right directions according to the exponential function, and the average value of the overall electricity of the multiple photovoltaic street lights is substituted into the exponential function for evaluation, and electric energy is transmitted to the single photovoltaic street light or multiple photovoltaic street lights in the left and right directions according to the electricity of the result; within the coverage of the left and right power transmission of multiple photovoltaic street lights, if there is a photovoltaic street light energy storage module with a power higher than or equal to the average value of the overall electricity of the multiple photovoltaic street lights, the power transmission range stops from the photovoltaic street light with the higher power; when the multiple photovoltaic street lights are in the trough state, electric energy is transmitted from another multi-photovoltaic street light with a higher power closest to the left and right to the multi-photovoltaic street light in the trough state, and the multi-photovoltaic street light with a higher power transmits 15% of the average value of the overall electricity to the multi-photovoltaic street light in the trough state; when the power transmission is not completed, if the first-level energy storage scheduling strategy ends, the execution module controls the power transmission to stop execution.

6. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: In the secondary energy storage scheduling strategy implemented by the execution module, the power transmission between the photovoltaic street lamps is 95% of the transmission rate of the photovoltaic street lamp's own energy storage module. The secondary energy storage scheduling strategy is consistent with the primary energy storage scheduling strategy except for the different transmission rates.

7. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: In the three-level energy storage scheduling strategy, the electric energy transmission between the photovoltaic street lamps is 24% of the transmission rate of the photovoltaic street lamp's own energy storage module. The three-level energy storage scheduling strategy is consistent with the first-level energy storage scheduling strategy except for the different transmission rates. In the first-level lighting scheduling strategy, the execution module controls the lighting module in each photovoltaic street lamp to illuminate at 85% of the rated power. The actual load power consumption information of the lighting module of each photovoltaic street lamp is different. The intelligent scheduling module calculates the time for the energy storage module to continuously provide electric energy based on the lighting module load power consumption information provided by the acquisition module. When half of the time for the energy storage module to continuously provide electric energy has passed, the intelligent scheduling module sends the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy to the execution module, and the execution module simultaneously executes the fourth-level energy storage scheduling strategy and the second-level lighting scheduling strategy.

8. The intelligent control system for photovoltaic street lamps according to claim 1, characterized in that: In the four-level energy storage scheduling strategy, when the difference in the remaining power of the energy storage modules between adjacent photovoltaic street lamps is greater than 10% of their own power, the energy storage module with high power transmits electric energy to the adjacent energy storage module with low power, and the electric energy transmission between the photovoltaic street lamps is 8% of the transmission rate of the photovoltaic street lamp's own energy storage module, and the energy storage modules between the remaining photovoltaic street lamps no longer transmit electric energy; in the secondary lighting strategy, the lighting module and the lighting module of the adjacent photovoltaic street lamp are illuminated at 75% and 50% of the rated power respectively, and are alternately replaced every 1 hour. When the acquisition module collects the power generation information generated by the power generation module again, the intelligent scheduling module sends the termination of the four-level energy storage scheduling strategy and the secondary lighting strategy to the execution module, the execution module controls the lighting module to stop running, and the intelligent scheduling module re-enters the first stage of power generation analysis; if the acquisition module does not collect the power generation information generated by the power generation module and the remaining power of the energy storage module is less than 20%, the execution module also controls the lighting module to stop running.

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