Optical storage and charging integrated system and method applied to mixing station, electronic equipment and medium

Abstract

The embodiment of the invention provides an optical storage and charging integrated system and method applied to a mixing station, electronic equipment and a medium, and belongs to the field of energy consumption of the mixing station. The system comprises a light storage system which comprises photovoltaic power generation equipment, energy storage equipment and an anti-countercurrent control device, and the anti-countercurrent control device is used for peak protection of photovoltaic loads and suppression of power grid harmonics; and the control system is used for allocating photovoltaic power generation, energy storage charging and energy storage discharging time periods according to energy consumption data, energy consumption habits, electricity prices and charging requirements of the load equipment in the mixing station in different time periods, and controlling start and stop of the anti-reflux control device according to the energy flow condition of the power distribution main line. The scale and layout of a power generation system are determined according to the actual situation and the power utilization demand of a construction site mixing station, and energy storage equipment is selected to achieve storage and release of electric energy; and through a full-amount self-generation and self-use mode, the confinement of power consumption tension on project propulsion of the green construction site can be effectively relieved, and the green power use ratio of the green construction site is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of energy utilization in batching plants, and particularly to a photovoltaic-storage-charging integrated system, method, electronic device and medium applied to batching plants. Background Art

[0002] In the process of promoting the construction of green construction sites and realizing the low-carbon transformation of the construction industry, the clean and efficient utilization of power supply has become an urgent problem to be solved. At present, most construction site facilities such as batching plants mainly rely on the power provided by the national power grid for production operations. This traditional power supply method not only increases the dependence on fossil energy, but also faces challenges such as tight power consumption and large fluctuations in peak-valley electricity prices, thus restricting to a certain extent the smooth progress of green construction site projects.

[0003] With the rapid development of renewable energy power generation technologies, distributed power generation systems such as solar photovoltaic and wind power generation are increasingly widely applied around construction sites. However, due to limited grid acceptance capacity, imperfect dispatching mechanisms and other reasons, this green power is often difficult to be fully consumed, resulting in frequent occurrences of "light abandonment" and "wind abandonment" phenomena. At the same time, for construction sites, the traditional power purchase method also makes it difficult to directly enjoy the environmental and economic benefits brought by green power.

[0004] The peak-valley electricity price system implemented by the national power grid aims to guide users to use electricity rationally through price leverage, cut peaks and fill valleys, and improve the operation efficiency of the power grid. However, for construction site facilities such as batching plants, due to the characteristics of continuous production operations and high energy consumption, they often need to consume a large amount of electricity during peak electricity price periods, thus increasing the operating costs. In addition, the large fluctuations in peak-valley electricity prices also increase the uncertainty of the electricity consumption costs of construction sites. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a photovoltaic-storage-charging integrated system, method, electronic device and medium applied to batching plants, which are used to solve all or at least part of the technical problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the embodiments of the present invention provide a photovoltaic-storage-charging integrated system applied to batching plants, including:

[0007] A photovoltaic-storage system, the photovoltaic-storage system includes photovoltaic power generation equipment, energy storage equipment and an anti-backflow control device, wherein the anti-backflow control device is used for peak protection of photovoltaic loads and suppression of grid harmonics;

[0008] A control system, which is used to allocate photovoltaic power generation periods, energy storage charging periods and energy storage discharging periods according to the energy consumption data, energy consumption habits, electricity prices and charging demands of load equipment in different periods of the batching plant, and control the start and stop of the anti-backflow control device according to the energy flow situation of the main distribution line.

[0009] Optionally, the anti-counterflow control device includes:

[0010] A current and voltage detection module for real-time monitoring of current and voltage parameters in the power grid;

[0011] A control processing module for adjusting the working state of power electronic components inside the anti-counterflow control device according to the detected current and voltage parameters to change the power flow direction, so as to prevent the occurrence of counterflow.

[0012] Optionally, the control processing module is used to adjust the working state of power electronic components inside the anti-counterflow control device according to the detected current and voltage parameters to change the power flow direction, so as to prevent the occurrence of counterflow, including:

[0013] Measuring the current and voltage output by the photovoltaic inverter and determining the photovoltaic power generation, and measuring the current and voltage supplied by the power grid to the load equipment in the batching plant to determine the load power;

[0014] Calculating the difference between the photovoltaic power generation and the load power. If the difference is greater than zero and exceeds a preset threshold, it is determined that there is a counterflow risk;

[0015] By adjusting the on and off times of the insulated gate bipolar transistor inside the inverter, controlling the output voltage and current of the inverter, or;

[0016] Changing the conduction duty cycle of the insulated gate bipolar transistor to control the output power of the photovoltaic power generation system to match or be lower than the load power, so as to prevent counterflow, or;

[0017] Adjusting the turns ratio of the transformer to change the power flow direction and magnitude.

[0018] Optionally, the control system is also used to plan the photovoltaic installation capacity of the photovoltaic power generation equipment, the energy storage capacity of the energy storage equipment, and the installation location and quantity of charging piles according to the energy consumption data, energy consumption habits, electricity price, and charging demand of the load equipment in different periods of the batching plant.

[0019] Optionally, the energy storage equipment is also used to filter unstable photovoltaic power to eliminate high-order harmonics and obtain constant-power power supply for the batching plant.

[0020] Optionally, in terms of energy storage allocation, the control system discharges at the peak electricity price during the production period within the energy consumption plan through an automatic timing and load sensing function, and emergently adjusts the power output if there is an overload situation outside the energy consumption plan.

[0021] On the other hand, the present invention also provides a control method for a photovoltaic-storage-charging integrated system applied to a batching plant, including:

[0022] Obtain the energy consumption data, energy consumption habits, electricity prices, and charging demands of the load equipment in the batching plant at different times;

[0023] According to the energy consumption data, energy consumption habits, electricity prices, and charging demands of the load equipment in the batching plant at different times, allocate the photovoltaic power generation period, energy storage charging period, and energy storage discharging period, and control the start and stop of the anti-backflow control device according to the energy flow situation of the main distribution line.

[0024] On the other hand, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the steps of the above-mentioned control method are implemented.

[0025] On the other hand, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned control method are implemented.

[0026] Through the above technical solutions, according to the actual situation and electricity demand of the construction site batching plant, determine the scale and layout of the distributed power generation system, select suitable energy storage equipment, and realize the storage and release of electric energy; further realize the collaborative optimization and efficient operation among power generation, energy storage, and power consumption. Moreover, through the full self-use mode, it can effectively alleviate the restriction of the tight power consumption on the promotion of the green construction site project, improve the proportion of green electricity used in the green construction site, and the electricity cost of the construction site is not affected by the peak-valley electricity price fluctuations.

[0027] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification, and are used to explain the embodiments of the present invention together with the following specific implementation manners, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0029] Figure 1 is a schematic structural diagram of an integrated photovoltaic energy storage and charging system applied to a batching plant provided by an embodiment of the present invention;

[0030] Figure 2 is an implementation flowchart of a control method for an integrated photovoltaic energy storage and charging system applied to a batching plant provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will describe in detail the specific implementation manners of the embodiments of the present invention with reference to the drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention.

[0032] Refer to Figure 1 As shown, it is a schematic structural diagram of an integrated photovoltaic energy storage and charging system applied to a mixing plant provided by an embodiment of the present invention, including:

[0033] A photovoltaic energy storage system 10, the photovoltaic energy storage system includes photovoltaic power generation equipment, energy storage equipment and an anti-backflow control device, wherein the anti-backflow control device is used for peak protection of photovoltaic loads and suppression of power grid harmonics.

[0034] Specifically, the anti-backflow control device includes:

[0035] A current and voltage detection module, which is used to monitor the current and voltage parameters in the power grid in real time;

[0036] A control processing module, which is used to adjust the working state of the power electronic components inside the anti-backflow control device according to the detected current and voltage parameters to change the power flow direction to prevent backflow.

[0037] In some embodiments, the energy storage device is also used to filter unstable photovoltaic power to eliminate high-order harmonics and obtain a constant power supply for the mixing plant.

[0038] In some embodiments, the control processing module is used to adjust the working state of the power electronic components inside the anti-backflow control device according to the detected current and voltage parameters to change the power flow direction to prevent backflow, including performing the following steps:

[0039] S1: Measure the current and voltage output by the photovoltaic inverter and determine the photovoltaic power generation power, and measure the current and voltage supplied by the power grid to the load equipment in the mixing plant to determine the load power.

[0040] Specifically, the photovoltaic power generation power can be calculated according to the following formula:

[0041] P PV =V PV ×I PV ;

[0042] In the formula, P PV represents the photovoltaic power generation power, V PV represents the voltage output by the photovoltaic inverter, and I PV represents the current output by the photovoltaic inverter.

[0043] The load power can be calculated according to the following formula:

[0044] P L =V L ×I L ;

[0045] In the formula, P LRepresents the load power, V L Represents the voltage on the load device side, I L Represents the current on the load device side.

[0046] S2: Calculate the difference between the photovoltaic power generation and the load power. If the difference is greater than zero and exceeds the preset threshold, it is determined that there is a reverse current risk.

[0047] Specifically, the difference between the photovoltaic power generation and the load power can be determined according to the following formula:

[0048] ΔP = P PV - P L ;

[0049] It should be noted that the preset threshold can be set according to the actual application scenario and is not limited here.

[0050] S3: By adjusting the on and off times of the insulated gate bipolar transistor inside the inverter, control the output voltage and current of the inverter, or; change the duty cycle of the insulated gate bipolar transistor to control the output power of the photovoltaic power generation system to match or be lower than the load power to prevent reverse current, or; adjust the turns ratio of the transformer to change the power flow direction and magnitude.

[0051] Specifically, voltage adjustment: The output voltage of the photovoltaic inverter can be adjusted to limit the photovoltaic power generation. For example, reducing the output voltage can reduce the output power, thereby reducing the difference from the load power. However, this method may be limited by the grid voltage requirements. Control the photovoltaic power generation by adjusting the output current of the inverter. This is usually achieved by changing the duty cycle of the IGBT (insulated gate bipolar transistor) inside the inverter. The change in the duty cycle will directly affect the output voltage and current of the inverter, thereby controlling the output power. Control the reactive power output of the inverter by adjusting the power factor, and then affect the active power distribution in the grid.

[0052] The control system 11 is used to allocate the photovoltaic power generation period, the energy storage charging period, and the energy storage discharging period according to the energy consumption data, energy consumption habits, electricity prices, and charging requirements of the load devices in the batching plant at different times, and control the start and stop of the anti - reverse current control device according to the energy flow situation of the main distribution line.

[0053] In some embodiments, the control system is further used to plan the photovoltaic installation capacity of the photovoltaic power generation device, the energy storage capacity of the energy storage device, and the installation location and quantity of the charging piles according to the energy consumption data, energy consumption habits, electricity prices, and charging requirements of the load devices in the batching plant at different times.

[0054] Specifically, energy consumption data of each load device in the batching plant is collected in real time through devices such as smart meters and sensors, including the power consumption and peak load at different times. Analyze the historical energy consumption data to identify patterns such as peak energy consumption periods, off-peak periods, and seasonal variations of the load devices, connect to the local power grid's electricity price system, and obtain real-time electricity prices and time-of-use electricity price information. Predict the future charging load according to the charging requirements of electric vehicles or electric equipment in the batching plant. Determine the photovoltaic installed capacity according to the formula: Photovoltaic installed capacity = Daily average power consumption / (Daily average sunshine hours × Photovoltaic system efficiency). Considering the volatility and uncertainty of photovoltaic power output, the installed capacity can be appropriately increased to ensure power supply reliability. The calculation formula for the energy storage capacity of the energy storage device: Energy storage capacity of the energy storage device = (Maximum photovoltaic output - Maximum load demand) × Energy storage duration, where the maximum photovoltaic output is calculated based on the photovoltaic installed capacity and sunshine conditions, the maximum load demand is obtained by analyzing the energy consumption habits, the energy storage duration is set according to actual needs, and at the same time, factors such as the charge and discharge efficiency and cycle life of the energy storage device need to be considered for appropriate adjustment. Planning for the installation location and quantity of charging piles: Select the installation location of the charging piles according to the parking location and usage frequency of electric vehicles or electric equipment to ensure charging convenience and safety. Continuously optimize and adjust the photovoltaic installed capacity, the energy storage capacity of the energy storage device, and the installation location and quantity of charging piles according to the actual operation situation and prediction results, establish a perfect feedback mechanism, monitor the operation status and performance indicators of the system in real time, and adjust the control strategy in time to adapt to changes in the external environment.

[0055] In some embodiments, in terms of energy storage allocation, the control system discharges at the peak electricity price during the production period within the energy usage plan through the automatic timing and load sensing functions, and in case of an overload situation outside the energy usage plan, emergently adjusts the power output.

[0056] Specifically, according to the peak-valley electricity price policy of the local power grid (such as the peak electricity price period), a discharge time window can be preset in the control system. For example, set the energy storage system to automatically start discharging at 10:00 - 12:00 and 18:00 - 22:00 every day (assuming it is the electricity price peak period). Install smart meters and load sensors at key nodes of the power grid to collect power load data in real time and transmit it to the control system. The control system uses big data analysis algorithms to process the collected load data and predict the load trend in the next period of time. Set an overload threshold according to historical data and the current power grid capacity. Once the actual load approaches or exceeds this threshold, the system immediately triggers the emergency response mechanism.

[0057] Within a preset time window (such as peak electricity price periods), the energy storage system automatically discharges to meet the electricity demand of enterprises in the park and reduce the electricity purchase cost. When the system detects an overload situation, it immediately activates the emergency response mechanism. If the energy storage system is in the charging state and has sufficient power, it immediately switches to the discharging mode to provide additional power support to the power grid. Through smart meters and load management systems, emergency notifications are sent to request the reduction of non-essential electricity loads, such as turning off non-production air conditioners, lighting, etc. The energy storage device is manually or automatically adjusted through a remote centralized control platform to ensure the flexibility and stability of power supply.

[0058] In some embodiments, energy consumption analysis and system construction of the photovoltaic-energy storage-charging system in an indirect off-grid environment. In scenarios such as commercial concrete mixing plants and batching plants, there are many high-power electrical equipment. Due to the influence of the production cycle, considering the annual perspective, the energy consumption load is concentrated in the production months, and there is also the practical problem of continuous energy consumption to maintain the stable operation of equipment outside the production period. The batching plant scenario is generally relatively remote, with poor power access infrastructure, and the power grid's tolerance is insufficient to support the implementation of large-scale photovoltaic projects. The off-grid power operation logic of full self-use in a small area is more suitable for the actual energy consumption demand. According to the power load operation logic of the commercial concrete mixing plant, the load tracing method is used to measure and analyze the actual energy consumption pattern and predict the scale of photovoltaic construction. At the same time, the automatic control of the energy storage charge and discharge logic is carried out. During the period when the photovoltaic power is strong, while supplying the actual power demand of the site, it charges the energy storage device. At night peak electricity prices, according to the energy consumption analysis, it discharges at the peak of energy consumption to achieve economic operation through peak-valley arbitrage.

[0059] In some embodiments, the realization of the green electricity supply method and energy storage allocation logic in a non-consumption environment: Due to the power conditions in the batching plant scenario, it does not support the consumption of large-scale photovoltaic power on the grid distribution line. At the same time, there are serious load peaks during the production switchover, which is not conducive to the stable use of photovoltaic loads. Innovatively, by means of "off-grid cutting in and energy storage buffering", a photovoltaic-energy storage-charging system can be constructed to add photovoltaic power when the grid consumption is insufficient. The unstable photovoltaic power is filtered by the energy storage, and a constant power is supplied to the batching plant for electricity consumption, eliminating the influence of high-order harmonics on the power system and improving the power factor to enhance the energy efficiency level. In terms of energy storage allocation, the load sensing technology is used, combined with energy consumption analysis. Through the automatic timing and load sensing functions, it discharges at the peak electricity price during the production period within the energy consumption plan. If there is an overload situation outside the energy consumption plan, the emergency adjustment of the power output is made to ensure the reasonable progress of safe production.

[0060] In some embodiments, from the perspective of expanding the implementation path of "carbon control during the process" of engineering construction, a construction plan for a photovoltaic, energy storage, and charging system applicable to scenarios with relatively stable electricity consumption and difficult access to the power grid for photovoltaic power generation is studied. With the help of "PV-storage-direct-soft" technology and "anti-backflow" technology, the research and development of a fully self-consumed PV-storage-charging integrated system is realized. By reasonably planning the installed capacity of photovoltaic power and configuring the energy storage system, the self-consumption ratio of photovoltaic power generation is increased, the curtailment rate is reduced, 100% full self-consumption of photovoltaic power generation is achieved, and the investment return is maximized. Through the rational monitoring of photovoltaic power generation and the load of the park, the energy flow of the main distribution line is analyzed and controlled in real time. The intelligent anti-backflow control device is combined with the PV-storage system to achieve maximum protection against photovoltaic load peaks and suppression of power grid harmonics.

[0061] In some embodiments, the application scenario of the batching plant is selected, the energy consumption data of the batching plant is analyzed, the capacity of the photovoltaic device is reasonably planned, and the green power supply during the construction process is realized. By configuring energy storage facilities for peak shaving and valley filling, the self-consumption ratio of photovoltaic power is increased. At the same time, the planning of charging piles is combined with the promotion and popularization of new energy vehicles, and a reasonable charging time plan is studied to further ensure the full self-consumption of photovoltaic power generation and reduce the occurrence of curtailment. Through a comprehensive analysis of the load equipment in the batching plant scenario, and based on the actual electricity consumption requirements, the secondary utilization of areas such as the roof and idle open space in the batching plant scenario is carried out to construct an integrated fully self-consumed photovoltaic power generation facility. The difference between the load and the peak of photovoltaic power generation is analyzed synergistically, and energy storage facilities are reasonably configured to store green power when the electricity load is low. According to the requirements of the time-of-use electricity price difference of the power grid and the production requirements at night, the discharge time period is reasonably allocated to achieve 100% green power consumption.

[0062] In some embodiments, first, for the application scenario of the fully self-consumed mode, a batching plant with relatively stable electricity consumption data is selected for on-site research to understand the energy consumption data, energy consumption habits, charging needs, etc. of the station. Through data analysis, the planning of the installed capacity of photovoltaic power, the energy storage capacity, and the charging piles is initially completed, and a preliminary system model is constructed. Through expert consultation, hardware configuration, and optimization of software control strategies, an organic combination of "PV-storage-direct-soft" technology and "anti-backflow" technology is formed. For different energy consumption and electricity price situations at different times, photovoltaic power generation, energy storage charging, and energy storage discharging are reasonably allocated to maximize the utilization of photovoltaic power generation and the economic benefits of energy storage charging and discharging. Through demonstration projects, practical verification and configuration optimization are carried out. A reasonable configuration plan is formed to achieve the creation of the "fully self-generated and self-consumed, with surplus electricity not fed into the grid" mode. Then, energy consumption tests are carried out for several time periods. Through renewable energy planning methods, the economic impact of the use of equipment such as photovoltaic energy storage on the batching plant is compared to determine the most effective ratio of photovoltaic energy storage and power allocation strategy in the research area, so as to form a complete set of construction technologies and management measures for fully self-consumed PV-storage-charging.

[0063] Through the above technical solutions, according to the actual situation and power consumption requirements of the construction site batching plant, the scale and layout of the distributed power generation system are determined, and suitable energy storage devices are selected to realize the storage and release of electric energy; further, the collaborative optimization and efficient operation among power generation, energy storage, and power consumption are realized. Moreover, through the full self-use mode, it can effectively alleviate the restriction of the tight power consumption on the promotion of the green construction site project, increase the proportion of green electricity used in the green construction site, and the power consumption cost of the construction site is not affected by the peak-valley electricity price fluctuations.

[0064] Refer to Figure 2 As shown, it is the implementation flowchart of a control method for a photovoltaic energy storage charging integrated system applied to a batching plant provided by an embodiment of the present invention, including the following execution steps:

[0065] Step 200: Obtain the energy consumption data, energy consumption habits, electricity prices, and charging requirements of the load devices in the batching plant at different times.

[0066] Step 201: According to the energy consumption data, energy consumption habits, electricity prices, and charging requirements of the load devices in the batching plant at different times, allocate the photovoltaic power generation time period, energy storage charging time period, and energy storage discharge time period, and control the start and stop of the anti-counterflow control device according to the energy flow situation of the main distribution line.

[0067] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0068] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for realizing the functions specified in one Figure 1 one process or multiple processes and / or blocks Figure 1 a device for realizing the functions specified in one block or multiple blocks.

[0069] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction means that implements the functions specified in one or more of the procedures Figure 1 one or more of the procedures and / or blocks Figure 1 specified in one or more of the blocks or blocks.

[0070] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, such that a series of operational steps are performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more of the procedures Figure 1 one or more of the procedures and / or blocks Figure 1 specified in one or more of the blocks or blocks.

[0071] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and memory.

[0072] The memory may include non-permanent memory in the form of computer-readable media, random access memory (RAM) and / or non-volatile memory such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

[0073] Computer-readable media includes both permanent and non-permanent, removable and non-removable media implemented by any method or technology for storing information. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transitory media that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0074] It should also be noted that the term "comprise", "include" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, commodity or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising the element.

[0075] The above are only embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A photovoltaic storage and charging integrated system applied to a mixing station, characterized in that: include: A photovoltaic storage system, the photovoltaic storage system comprising photovoltaic power generation equipment, energy storage equipment and an anti-backflow control device, wherein the anti-backflow control device is used for peak protection of photovoltaic loads and suppression of grid harmonics; The control system is used to allocate photovoltaic power generation periods, energy storage charging periods and energy storage discharging periods according to the energy consumption data, energy consumption habits, electricity prices and charging needs of the load equipment in the mixing station at different times, and to control the start and stop of the anti-backflow control device according to the energy flow of the distribution main line.

2. The integrated photovoltaic storage and charging system for a mixing station according to claim 1 is characterized in that: The anti-backflow control device comprises: Current and voltage detection module, used to monitor the current and voltage parameters in the power grid in real time; The control processing module is used to adjust the working state of the power electronic components inside the anti-backflow control device according to the detected current and voltage parameters to change the power flow direction to prevent the backflow.

3. The integrated photovoltaic storage and charging system for a mixing station according to claim 2 is characterized in that: The control processing module is used to adjust the working state of the power electronic components inside the anti-backflow control device according to the detected current and voltage parameters to change the power flow direction to prevent the backflow situation, including: Measure the current and voltage output by the photovoltaic inverter and determine the photovoltaic power generation power; measure the current and voltage supplied by the power grid to the load equipment in the mixing plant to determine the load power; Calculate the difference between the photovoltaic power generation and the load power. If the difference is greater than zero and exceeds a preset threshold, it is determined that there is a reverse flow risk. Controlling the output voltage and current of the inverter by adjusting the on and off time of the insulated gate bipolar transistor inside the inverter, or; Changing the on-duty cycle of the insulated gate bipolar transistor to control the output power of the photovoltaic power generation system to match or be lower than the load power to prevent reverse flow, or; Adjust the transformer ratio to change the direction and size of power flow.

4. The integrated photovoltaic storage and charging system for a mixing station according to claim 1 is characterized in that: The control system is also used to plan the photovoltaic installed capacity of the photovoltaic power generation equipment, the storage capacity of the energy storage equipment, and the installation location and number of charging piles according to the energy consumption data, energy consumption habits, electricity prices and charging needs of the load equipment in the mixing station at different times.

5. The integrated photovoltaic storage and charging system for a mixing station according to claim 1 is characterized in that: The energy storage device is also used to filter unstable photovoltaic power to eliminate high-order harmonics and obtain constant power mixing station supply electricity.

6. The integrated photovoltaic storage and charging system for a mixing station according to claim 1 is characterized in that: In terms of energy storage allocation, the control system uses automatic timing and load sensing functions to discharge at the peak electricity price during the production period within the energy usage plan, and to adjust the power output in an emergency if there is an overload situation outside the energy usage plan.

7. A control method for the integrated photovoltaic storage and charging system for a mixing station as claimed in any one of claims 1 to 6, characterized in that: include: Obtain energy consumption data, energy consumption habits, electricity prices and charging requirements of load equipment in mixing plants at different times; According to the energy consumption data, energy consumption habits, electricity prices and charging needs of the load equipment in the mixing station at different times, the photovoltaic power generation period, energy storage charging period and energy storage discharging period are arranged, and the start and stop of the anti-backflow control device are controlled according to the energy flow of the distribution main line.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the control method according to claim 7 are implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the control method according to claim 7 are implemented.

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