A method, system, device and medium for intelligent linkage of multi-energy combined power generation

Abstract

The present application relates to the technical field of energy management, and in particular to an intelligent linkage method, system, device and medium for multi-energy joint power generation, the method comprising: when a charging vehicle is detected, voltage fluctuation information and frequency status information are determined according to the mains parameter information, if the voltage fluctuation information and / or frequency status information do not meet the preset voltage and frequency standard, then the static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node, the photovoltaic power generation power is determined based on the photovoltaic power generation supply information, and it is determined whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information, if it is greater than or equal to, the converter power generation power of the charging pile is analyzed, a power supply adjustment instruction is generated, the power demand to be met of the load power is determined, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information. The present application improves the energy utilization rate of the charging pile.

Description

Technical Field

[0001] The present application relates to the technical field of energy management, and in particular to an intelligent linkage method, system, equipment and medium for multi-energy combined power generation. Background Art

[0002] With the popularity of electric vehicles and the development of renewable energy, load balance and energy efficiency of power systems have become important issues. The independent operation of traditional charging piles and energy storage systems limits the flexible use of energy and cannot give full play to the advantages of various energy sources. Especially during peak load periods, the burden on the power grid increases, which easily leads to an imbalance in power supply and demand. During low load periods, much electricity from renewable energy sources is wasted and not fully utilized. In addition, the single energy supply system is unable to cope with emergencies such as power outages and load surges, and lacks sufficient flexibility and resilience.

[0003] The existing photovoltaic inverter, energy storage converter, car charging pile and diesel generator system operate independently, and fail to achieve the organic combination and intelligent scheduling of multiple energy forms, resulting in low overall system efficiency. Photovoltaic power generation cannot be maximized, and the energy storage system cannot effectively store excess electricity when there is no load. The charging pile can only rely on a single power supply and cannot be dynamically adjusted according to actual conditions, thereby reducing the energy utilization rate of the charging pile. Summary of the invention

[0004] In order to solve at least one of the above technical problems, the present application provides an intelligent linkage method, system, device and medium for multi-energy joint power generation.

[0005] In the first aspect, the present application provides an intelligent linkage method for multi-energy joint power generation, which adopts the following technical solution:

[0006] When a charging vehicle is detected, the charging load information, the city power supply information, the photovoltaic power supply information, the converter supply information and the diesel power supply information are obtained. The city power supply information is the city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is the photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is the power supply parameter information of the energy storage converter to the charging pile and the internal control circuit information of the energy storage converter, and the diesel power supply information is the power generation parameter information provided by multiple groups of diesel generators to the charging pile;

[0007] Determine voltage fluctuation information and frequency status information according to the mains power parameter information, and judge whether the voltage fluctuation information and / or the frequency status information meet the preset voltage and frequency standard;

[0008] If the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standards, a static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node to control the static switch circuit corresponding to the static switch node to respond within a preset time period, and the static switch circuit is used to block the connection between the mains and the charging pile, and switch the operation module of the energy storage converter from the grid-connected mode to the off-grid mode to power the charging pile;

[0009] Determine the photovoltaic power generation power based on the photovoltaic power supply information, and judge whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information; if greater than or equal to, analyze the inverter power generation power of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter, generate a power supply adjustment instruction, and control the photovoltaic power generation system to start to supply power to the charging pile;

[0010] When it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, the power demand to be met of the load power is determined according to the photovoltaic power generation power and the converter power generation power, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information to control the multiple groups of diesel generators to power the charging piles.

[0011] In a possible implementation, the analyzing the power generation power of the converter of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter to generate a power supply adjustment instruction includes:

[0012] Determine the active power value of the current mains electricity meter according to the mains electricity parameter information;

[0013] Performing error calculation between the active power value and a preset active power setting value of the mains electricity meter to obtain an active power error value;

[0014] Substituting the active power error value into the PID control formula, the discharge power of the energy storage converter and the output power percentage of the photovoltaic power generation system are obtained;

[0015] Compare and analyze the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter according to the power to be discharged and the power to be output percentage, so as to obtain the discharge power adjustment value of the energy storage converter and the output power percentage adjustment value of the photovoltaic power generation system;

[0016] A power supply adjustment method instruction is generated according to the discharge power adjustment value and the output power percentage adjustment value.

[0017] In a possible implementation, performing error calculation between the active power value and a preset active power setting value of the mains electricity meter to obtain an active power error value includes:

[0018] According to the interception period t, respectively intercept the current time node corresponding to the active power value and the preset time node corresponding to the preset active power setting value;

[0019] Create a power waveform coordinate system, and map the current time node and the active power value and the preset time node and the preset active power setting value into the power waveform coordinate system, to obtain a first power waveform graph corresponding to the active power value and a second power waveform graph corresponding to the preset active power setting value, wherein the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values;

[0020] Collecting the first highest peak value, the first lowest peak value and the first period time corresponding to different peak value change cycles in the first power waveform diagram, and calculating the difference between the first highest peak value and the first lowest peak value to obtain the first power difference corresponding to each peak value change cycle;

[0021] Taking the first power difference as a numerator and the first period time period corresponding to the first power difference as a denominator for calculation, a first power mean corresponding to each peak change period in the first power waveform diagram is obtained;

[0022] Collect the second highest peak value, the second lowest peak value and the second period time corresponding to different peak value change cycles in the second power waveform diagram, and calculate the difference between the second highest peak value and the second lowest peak value to obtain the second power difference corresponding to each peak value change cycle;

[0023] The second power difference is used as a numerator and the second period time period corresponding to the second power difference is used as a denominator to calculate to obtain a second power mean corresponding to a peak change period in the second power waveform diagram;

[0024] A difference is calculated between the first power average value and the second power average value to obtain an active power error value.

[0025] In one possible implementation, the PID control formula is:

[0026] ;

[0027] Wherein, e(t) is the active power error value, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, is the error change rate, is the control variable of the discharge power of the energy storage converter.

[0028] In one possible implementation, the is the proportionality coefficient, is the integration coefficient, are the differential coefficients, including:

[0029] The With the The initial value of is set to zero, and the , until the discharge power of the energy storage converter oscillates at a constant amplitude;

[0030] Determine the current proportional gain And the oscillation period , and according to the proportional gain And the oscillation period The proportional coefficient, the integral coefficient and the differential coefficient in the PID control formula are parameterized to obtain the set integral coefficient. , differential coefficient And the proportionality factor , where the proportional coefficient after setting 0.6 , the integral coefficient after setting for , the differential coefficient for .

[0031] In a possible implementation, the generating of the static switch instruction based on the static switch node and controlling the static switch circuit corresponding to the static switch node to respond within a preset time period further includes:

[0032] If the voltage fluctuation information and / or the frequency status information meets the preset voltage and frequency standard, a static closing instruction is generated based on the switch node to control the static switch circuit corresponding to the static switch node to be closed within a preset time period.

[0033] In a possible implementation, determining the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power, generating a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and controlling the multiple groups of diesel generators to supply power to the charging pile include:

[0034] Inputting the power demand to be met and the diesel generator supply information into a preset generator motion equation to obtain the input power of the diesel generator;

[0035] Generate a diesel power generation instruction according to the input power, and control the multiple groups of diesel generators to supply power to the charging pile;

[0036] Wherein, the preset generator operation equation is: , where J is the moment of inertia, D is the damping coefficient of the diesel generator, and θ is the rotor angle of the diesel generator. is the mechanical power (input power) of the diesel generator, is the electrical power (output power) of the diesel generator.

[0037] In the second aspect, the present application provides an intelligent linkage system for multi-energy combined power generation, which adopts the following technical solutions:

[0038] An intelligent linkage system for multi-energy combined power generation, comprising:

[0039] An information acquisition module is used to acquire charging load information, city power supply information, photovoltaic power supply information, converter supply information, and diesel power supply information when a charging vehicle is detected. The city power supply information is city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is power supply parameter information provided by the energy storage converter to the charging pile and internal control circuit information of the energy storage converter, and the diesel power supply information is power generation parameter information provided by multiple groups of diesel generators to the charging pile;

[0040] An information judgment module, used to determine voltage fluctuation information and frequency status information according to the mains parameter information, and judge whether the voltage fluctuation information and / or the frequency status information meet a preset voltage and frequency standard;

[0041] A converter supply module, which is used to determine a static switch node based on the converter supply information if the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standard, and generate a static switch instruction based on the static switch node, and control the static switch circuit corresponding to the static switch node to respond within a preset time period, wherein the static switch circuit is used to block the connection between the mains and the charging pile, and switch the operation module of the energy storage converter from the grid-connected mode to the off-grid mode to power the charging pile;

[0042] A photovoltaic supply module, used to determine the photovoltaic power generation power based on the photovoltaic power supply information, and judge whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information; if greater than or equal to, the inverter power generation power of the charging pile is analyzed based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter, and a power supply adjustment instruction is generated to control the photovoltaic power generation system to be turned on to supply power to the charging pile;

[0043] The generator supply module is used to determine the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power when it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, generate a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and control the multiple groups of diesel generators to supply power to the charging piles.

[0044] In a possible implementation, when the photovoltaic supply module analyzes the inverter power generation power of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter and generates a power supply adjustment instruction, it is specifically used to:

[0045] Determine the active power value of the current mains electricity meter according to the mains electricity parameter information;

[0046] Performing error calculation between the active power value and a preset active power setting value of the mains electricity meter to obtain an active power error value;

[0047] Substituting the active power error value into the PID control formula, the discharge power of the energy storage converter and the output power percentage of the photovoltaic power generation system are obtained;

[0048] Compare and analyze the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter according to the power to be discharged and the power to be output percentage, so as to obtain the discharge power adjustment value of the energy storage converter and the output power percentage adjustment value of the photovoltaic power generation system;

[0049] A power supply adjustment method instruction is generated according to the discharge power adjustment value and the output power percentage adjustment value.

[0050] In another possible implementation, when the photovoltaic supply module performs error calculation between the active power value and the preset active power setting value of the mains electricity meter to obtain the active power error value, it is specifically used to:

[0051] According to the interception period t, respectively intercept the current time node corresponding to the active power value and the preset time node corresponding to the preset active power setting value;

[0052] Create a power waveform coordinate system, and map the current time node and the active power value and the preset time node and the preset active power setting value into the power waveform coordinate system, to obtain a first power waveform graph corresponding to the active power value and a second power waveform graph corresponding to the preset active power setting value, wherein the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values;

[0053] Collecting the first highest peak value, the first lowest peak value and the first period time corresponding to different peak value change cycles in the first power waveform diagram, and calculating the difference between the first highest peak value and the first lowest peak value to obtain the first power difference corresponding to each peak value change cycle;

[0054] Taking the first power difference as a numerator and the first period time period corresponding to the first power difference as a denominator for calculation, a first power mean corresponding to each peak change period in the first power waveform diagram is obtained;

[0055] Collect the second highest peak value, the second lowest peak value and the second period time corresponding to different peak value change cycles in the second power waveform diagram, and calculate the difference between the second highest peak value and the second lowest peak value to obtain the second power difference corresponding to each peak value change cycle;

[0056] The second power difference is used as a numerator and the second period time period corresponding to the second power difference is used as a denominator to calculate to obtain a second power mean corresponding to a peak change period in the second power waveform diagram;

[0057] A difference is calculated between the first power average value and the second power average value to obtain an active power error value.

[0058] In another possible implementation, the PID control formula in the photovoltaic supply module is:

[0059] ;

[0060] Wherein, e(t) is the active power error value, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, is the error change rate, is the control variable of the discharge power of the energy storage converter.

[0061] In another possible implementation, the PID control formula in the photovoltaic supply module is the proportionality coefficient, is the integration coefficient, are the differential coefficients, including:

[0062] The With the The initial value of is set to zero, and the , until the discharge power of the energy storage converter oscillates at a constant amplitude;

[0063] Determine the current proportional gain And the oscillation period , and according to the proportional gain And the oscillation period The proportional coefficient, the integral coefficient and the differential coefficient in the PID control formula are parameterized to obtain the set integral coefficient. , differential coefficient And the proportionality factor , where the proportional coefficient after setting 0.6 , the integral coefficient after setting for , the differential coefficient for .

[0064] In another possible implementation, the system further includes: a state switching module, wherein:

[0065] The state switching module is used to generate a static shutdown instruction based on the switch node when the voltage fluctuation information and / or the frequency state information meets the preset voltage and frequency standard, and control the static switch circuit corresponding to the static switch node to be closed within a preset time period.

[0066] In another possible implementation, the generator supply module determines the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power, generates a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and controls the multiple groups of diesel generators to power the charging pile, specifically for:

[0067] Inputting the power demand to be met and the diesel generator supply information into a preset generator motion equation to obtain the input power of the diesel generator;

[0068] Generate a diesel power generation instruction according to the input power, and control the multiple groups of diesel generators to supply power to the charging pile;

[0069] Wherein, the preset generator operation equation is: , where J is the moment of inertia, D is the damping coefficient of the diesel generator, and θ is the rotor angle of the diesel generator. is the mechanical power (input power) of the diesel generator, is the electrical power (output power) of the diesel generator.

[0070] In a third aspect, the present application provides an electronic device, which adopts the following technical solution:

[0071] at least one processor;

[0072] Memory;

[0073] At least one application, wherein at least one application is stored in a memory and configured to be executed by at least one processor, and at least one application is configured to: execute an intelligent linkage method for multi-energy joint power generation as described in any one of the first aspects.

[0074] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0075] A computer-readable storage medium stores a computer program, which, when executed in a computer, causes the computer to execute any intelligent linkage method for multi-energy combined power generation as described in the first aspect.

[0076] In summary, the present application includes at least one of the following beneficial technical effects:

[0077] When the charging pile is powered and a charging vehicle is detected, the charging load information, the city power supply information, the photovoltaic power supply information, the converter supply information and the diesel power supply information are obtained, wherein the city power supply information is the city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is the photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is the power supply parameter information provided by the energy storage converter to the charging pile and the internal control circuit information of the energy storage converter, the diesel power supply information is the power generation parameter information provided by multiple groups of diesel generators to the charging pile, the voltage fluctuation information and the frequency status information are determined according to the city power parameter information, and it is determined whether the voltage fluctuation information and / or the frequency status information meet the preset voltage and frequency standard, if the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standard, then the static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node, and the static switch circuit corresponding to the static switch node is controlled to respond within a preset time period, and the static switch circuit is used to block the connection between the city power and the charging pile, and The operation module of the energy storage inverter is switched from the grid-connected mode to the off-grid mode to supply power to the charging pile. The photovoltaic power generation power is determined based on the photovoltaic power generation supply information, and it is determined whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information. If it is greater than or equal to, the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter are analyzed for the inverter power generation power of the charging pile, and a power supply adjustment instruction is generated to control the photovoltaic power generation system to supply power to the charging pile. When it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the inverter power generation power of the energy storage inverter cannot meet the load power demand in the charging load information, the power demand to be met of the load power is determined according to the photovoltaic power generation power and the inverter power generation power, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information, and multiple groups of diesel generators are controlled to supply power to the charging pile. This application can not only optimize energy utilization and improve the overall efficiency of the power system, but also provide flexible and reliable power support under different load conditions, solving the growing demand for electric vehicle charging and renewable energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1 A schematic flow chart of an intelligent linkage method for multi-energy combined power generation provided in an embodiment of the present application.

[0079] Figure 2 A schematic diagram of the structure of an intelligent linkage system for multi-energy combined power generation provided in an embodiment of the present application.

[0080] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0081] The following is combined with Figure 1-3 This application is described in further detail.

[0082] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but as long as they are within the scope of the present application, they are protected by the patent law.

[0083] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0084] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0085] The embodiments of the present application are further described in detail below in conjunction with the drawings in the specification.

[0086] The embodiment of the present application provides a method for a smart linkage method of multi-energy combined power generation, which is executed by an electronic device, wherein the electronic device can be an independent physical electronic device, or an electronic device cluster or distributed system composed of multiple physical electronic devices, or a cloud electronic device that provides cloud computing services. The embodiment of the present application is not limited here, such as Figure 1 As shown, the method includes:

[0087] Step S10: When a charging vehicle is detected, the charging load information, the city power supply information, the photovoltaic power supply information, the converter supply information and the diesel power supply information are obtained.

[0088] Among them, the city power supply information is the city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power generation supply information is the photovoltaic power generation parameter information provided by the photovoltaic power generation system to the charging pile, the inverter supply information is the power supply parameter information of the energy storage inverter to the charging pile and the internal control circuit information of the energy storage inverter, and the diesel power generation supply information is the power generation parameter information provided by multiple groups of diesel generators to the charging.

[0089] For the embodiment of the present application, in the operation and management process of the charging station or charging pile, the charging vehicle represents an electric vehicle or other rechargeable device that is currently connected to the charging device for electric energy replenishment. When the system detects such a charging vehicle, in order to optimize energy distribution and ensure charging efficiency and safety, a series of information acquisition operations will be performed. Specifically, the charging load information is used to indicate the load characteristics such as charging power, current, voltage, etc. currently required by the charging vehicle, which is an important basis for determining how to allocate power. The mains supply information represents the power parameters directly supplied to the charging pile by the urban power grid through the power supply line, including but not limited to voltage, current, frequency, phase difference, and possible power supply stability indicators. These parameters are crucial for evaluating the mains supply capacity and formulating charging strategies. Photovoltaic power supply information refers to the power parameter information that converts solar energy into electrical energy through a photovoltaic power generation system (such as a solar panel array) and supplies it to the charging pile for use, including power generation, voltage, current, etc., reflecting the utilization of renewable energy. The converter supply information not only covers the power supply parameters (such as voltage, current, and power) provided by the energy storage converter (PCS) to the charging pile, but also involves the information of the converter's internal control circuit, such as working status, fault alarm, temperature monitoring, etc. This information is essential to ensure the safe and efficient operation of the energy storage system. The diesel power supply information refers to the power generation parameters provided by multiple sets of diesel generators as backup power sources to the charging pile when the city power is insufficient or fails, including but not limited to power generation, voltage stability, fuel consumption rate, etc. This information helps to evaluate the performance and efficiency of the diesel power generation system.

[0090] In the embodiment of the present application, the electronic device will first identify and confirm the existence of the charging vehicle, and then obtain the charging load information in real time through the sensors, metering equipment and communication interfaces connected to it to understand the specific charging needs of the vehicle. At the same time, the electronic device will communicate with the city power supply system, photovoltaic power generation system, energy storage inverter and diesel generator set to obtain the real-time power parameters and status information of these energy supply sources.

[0091] Step S11, determining voltage fluctuation information and frequency status information according to the mains parameter information, and judging whether the voltage fluctuation information and / or frequency status information meets a preset voltage and frequency standard.

[0092] For the embodiment of the present application, in the power system, the mains parameter information refers to the power supply parameters provided by the public power grid (also called the mains), which are essential to ensure the normal operation of the power equipment. Among them, the voltage fluctuation information indicates the amplitude and frequency of the mains voltage fluctuation around its nominal value over a period of time, which reflects the stability of the power supply. The frequency status information refers to the frequency of the alternating current supplied by the mains, usually 50Hz or 60Hz, which represents the number of times the current completes a periodic change per unit time, and is also an important indicator of power quality. The voltage fluctuation information is usually obtained by measuring the real-time value of the mains voltage and comparing it with the nominal value to calculate the fluctuation amplitude and frequency. The frequency status information is obtained directly by measuring the cycle of the mains alternating current. This information is essential for judging whether the mains quality meets the requirements and whether it will affect the connected power equipment. For example, in the charging pile charging scenario, if the mains voltage fluctuates frequently or the frequency deviates from the standard value, the charging pile may be damaged, the performance may be degraded, or the life may be shortened.

[0093] In the embodiment of the present application, a smart meter is combined with a cloud computing platform. The smart meter has a built-in voltage and frequency detection module, which can collect and process the mains power parameter information in real time. Subsequently, the smart meter uploads the processed data to the cloud computing platform through a wireless communication network. On the cloud platform, big data analysis and machine learning algorithms are used to deeply mine and analyze massive data, so as to more accurately judge the quality of the mains power.

[0094] In addition, the preset voltage and frequency standard mentioned in this application is a voltage and frequency range parameter adjusted by the staff according to the actual application conditions of the charging pile.

[0095] Step S12: If the voltage fluctuation information and / or the frequency status information does not meet the preset voltage and frequency standard, a static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node to control the static switch circuit corresponding to the static switch node to respond within a preset time period.

[0096] Among them, the static switch circuit is used to block the connection between the mains and the charging pile, and switch the operating module of the energy storage inverter from the grid-connected mode to the off-grid mode to power the charging pile.

[0097] In an embodiment of the present application, the energy storage inverter has an embedded static switching circuit. When a static switching instruction is generated, the electronic device sends the static switching instruction to the static switching circuit. After receiving the static switching instruction, the static switching circuit controls the static switch to be converted from a closed state to an open state.

[0098] Step S13, determine the photovoltaic power generation power based on the photovoltaic power supply information, and judge whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information. If it is greater than or equal to, analyze the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter on the inverter power generation power of the charging pile, generate a power supply adjustment instruction, and control the photovoltaic power generation system to power the charging pile.

[0099] Specifically, when analyzing the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter to the inverter power generation power of the charging pile and generating a power supply adjustment instruction, the active power value of the current mains meter is determined according to the mains parameter information, and the error between the active power value and the preset active power setting value of the mains meter is calculated to obtain the active power error value, and the active power error value is substituted into the PID control formula to obtain the discharge power of the energy storage inverter and the output power percentage of the photovoltaic power generation system, and the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter are compared and analyzed according to the discharge power and the output power percentage to obtain the discharge power adjustment value of the energy storage inverter and the output power percentage adjustment value of the photovoltaic power generation system, and the power supply adjustment method instruction is generated according to the discharge power adjustment value and the output power percentage adjustment value.

[0100] Specifically, when the active power value and the preset active power setting value of the mains meter are subjected to error calculation to obtain the active power error value, the current time node corresponding to the active power value and the preset time node of the preset active power setting value are respectively intercepted according to the interception period t, and then a power waveform coordinate system is created, and the current time node and the active power value as well as the preset time node and the preset active power setting value are mapped into the power waveform coordinate system to obtain a first power waveform diagram corresponding to the active power value and a second power waveform diagram corresponding to the preset active power setting value, the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values, and then the first highest peak value, the first lowest peak value and the first period time period corresponding to different peak value change periods in the first power waveform diagram are collected, and the first highest peak value is mapped to the first lowest peak value The peak values ​​are calculated by difference, and the first power difference corresponding to each peak change period is obtained. The first power difference is used as the numerator, and the first cycle time period corresponding to the first power difference is used as the denominator for calculation, and the first power mean corresponding to each peak change period in the first power waveform is obtained. The second highest peak value, the second lowest peak value and the second cycle time period corresponding to different peak change periods in the second power waveform are collected, and the difference between the second highest peak value and the second lowest peak value is calculated to obtain the second power difference corresponding to each peak change period. The second power difference is used as the numerator, and the second cycle time period corresponding to the second power difference is used as the denominator for calculation, and the second power mean corresponding to each peak change period in the second power waveform is obtained. The difference between the first power mean and the second power mean is calculated to obtain the active power error value.

[0101] In the embodiment of the present application, the PID control formula is:

[0102] ;

[0103] Where, e(t) is the active power error value, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, is the error change rate, is the control variable of the discharge power of the energy storage converter.

[0104] When determining the proportional coefficient, integral coefficient, and differential coefficient, and The initial value is set to zero and adjusted according to the preset growth ratio , until the discharge power of the energy storage converter oscillates at a constant amplitude, determine the current proportional gain And the oscillation period , and according to the proportional gain And the oscillation period Set the proportional coefficient, integral coefficient and differential coefficient in the PID control formula to obtain the integral coefficient after setting , differential coefficient And the proportionality factor , where the proportional coefficient after setting 0.6 , the integral coefficient after setting for , differential coefficient for .

[0105] For the embodiment of the present application, adjust the proportional coefficient Can reduce steady-state error and adjust the integral coefficient Can eliminate steady-state errors and adjust differential coefficients It can reduce the error change rate and improve the system response speed. By dynamically adjusting the output power of the energy storage converter and photovoltaic inverter, the power generated by photovoltaic power generation can be eliminated to the maximum extent, and the overall efficiency of the system can be improved. At the same time, the PID control algorithm and coefficient tuning method are used to achieve precise power control to ensure stable and efficient operation of the system. Electronic equipment can quickly respond to changes in the power system by monitoring the status of the mains, battery and photovoltaic power in real time to avoid the risk of power grid collapse.

[0106] Step S14: When it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, the power demand to be met of the load power is determined according to the photovoltaic power generation power and the converter power generation power, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information, and a plurality of diesel generators are controlled to supply power to the charging piles.

[0107] Specifically, when the power demand to be met of the load power is determined according to the photovoltaic power generation power and the converter power generation power, a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information, and multiple groups of diesel generators are controlled to power the charging piles, the power demand to be met and the diesel power generation supply information are input into the preset generator motion equation to obtain the input power of the diesel generator, and the diesel power generation instruction is generated according to the input power to control the multiple groups of diesel generators to power the charging piles.

[0108] Among them, the preset generator operation equation is: , where J is the moment of inertia, D is the damping coefficient of the diesel generator, and θ is the rotor angle of the diesel generator. is the mechanical power (input power) of the diesel generator, is the electrical power (output power) of the diesel generator.

[0109] In an embodiment of the present application, when the charging pile is powered and a charging vehicle is detected, charging load information, city power supply information, photovoltaic power supply information, converter supply information, and diesel power supply information are obtained, wherein the city power supply information is city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is power supply parameter information provided by the energy storage converter to the charging pile and internal control circuit information of the energy storage converter, and the diesel power supply information is power generation parameter information provided by multiple groups of diesel generators to the charging pile. The voltage fluctuation information and the frequency status information are determined according to the city power parameter information, and it is determined whether the voltage fluctuation information and / or the frequency status information meet the preset voltage and frequency standard. If the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standard, the static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node to control the static switch circuit corresponding to the static switch node to respond within a preset time period. The static switch circuit is used to block the city power and the charging pile. , and switches the operation module of the energy storage inverter from the grid-connected mode to the off-grid mode to supply power to the charging pile. The photovoltaic power generation power is determined based on the photovoltaic power generation supply information, and it is determined whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information. If it is greater than or equal to, the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter are analyzed for the inverter power generation power of the charging pile, and a power supply adjustment instruction is generated to control the photovoltaic power generation system to supply power to the charging pile. When it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the inverter power generation power of the energy storage inverter cannot meet the load power demand in the charging load information, the power demand to be met of the load power is determined according to the photovoltaic power generation power and the inverter power generation power, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information, and multiple groups of diesel generators are controlled to supply power to the charging pile. The present application can not only optimize energy utilization and improve the overall efficiency of the power system, but also provide flexible and reliable power support under different load conditions, solving the growing demand for electric vehicle charging and renewable energy consumption.

[0110] A possible implementation method of an embodiment of the present application is to generate a static switch instruction based on a static switch node, and control the static switch circuit corresponding to the static switch node to respond within a preset time period, and then also include: if the voltage fluctuation information and / or the frequency status information meets the preset voltage and frequency standard, then generate a static shutdown instruction based on the switch node, and control the static switch circuit corresponding to the static switch node to be closed within a preset time period.

[0111] For the embodiment of the present application, when the mains power returns to normal and runs stably for a period of time, the static switch circuit is reconnected to the mains power input, and the energy storage converter switches from the off-grid mode back to the grid-connected mode. The entire recovery process is also completed within milliseconds, ensuring the continuity of power supply to the load end.

[0112] The following is an introduction to an intelligent linkage system for multi-energy combined power generation provided in an embodiment of the present application. The intelligent linkage system for multi-energy combined power generation described below and the intelligent linkage method for multi-energy combined power generation described above can be referred to each other. Please refer to Figure 2 , Figure 2 : is a structural diagram of an intelligent linkage system 20 for multi-energy combined power generation provided in an embodiment of the present application, including:

[0113] The information acquisition module 21 is used to acquire charging load information, city power supply information, photovoltaic power supply information, converter supply information and diesel power supply information when a charging vehicle is detected. The city power supply information is the city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is the photovoltaic power generation parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is the power supply parameter information of the energy storage converter to the charging pile and the internal control circuit information of the energy storage converter, and the diesel power supply information is the power generation parameter information provided by multiple groups of diesel generators to the charging pile;

[0114] An information determination module 22 is used to determine voltage fluctuation information and frequency status information according to the mains parameter information, and to determine whether the voltage fluctuation information and / or frequency status information meets a preset voltage and frequency standard;

[0115] The converter supply module 23 is used to determine the static switch node based on the converter supply information if the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standards, and generate a static switch instruction based on the static switch node, and control the static switch circuit corresponding to the static switch node to respond within a preset time period. The static switch circuit is used to block the connection between the mains and the charging pile, and switch the operation module of the energy storage converter from the grid-connected mode to the off-grid mode to power the charging pile;

[0116] The photovoltaic supply module 24 is used to determine the photovoltaic power generation power based on the photovoltaic power supply information, and to determine whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information. If it is greater than or equal to, the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter are analyzed for the inverter power generation power of the charging pile, and a power supply adjustment instruction is generated to control the photovoltaic power generation system to supply power to the charging pile.

[0117] The generator supply module 25 is used to determine the power demand to be met of the load power according to the photovoltaic power generation power and the converter power when it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, and generate a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, so as to control multiple groups of diesel generators to supply power to the charging piles.

[0118] In one possible implementation of the embodiment of the present application, the photovoltaic supply module 24 analyzes the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter to the inverter power generation power of the charging pile, and generates a power supply adjustment instruction, specifically for:

[0119] Determine the active power value of the current mains electricity meter according to the mains electricity parameter information;

[0120] The active power value is calculated to obtain an active power error value by comparing the active power value with the preset active power setting value of the mains electricity meter;

[0121] Substitute the active power error value into the PID control formula to obtain the discharge power of the energy storage converter and the output power percentage of the photovoltaic power generation system;

[0122] According to the discharge power and output power percentage, the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter are compared and analyzed to obtain the discharge power adjustment value of the energy storage converter and the output power percentage adjustment value of the photovoltaic power generation system;

[0123] A power supply adjustment method instruction is generated according to the discharge power adjustment value and the output power percentage adjustment value.

[0124] In another possible implementation of the embodiment of the present application, the photovoltaic supply module 24 performs error calculation between the active power value and the preset active power setting value of the mains meter to obtain the active power error value, specifically for:

[0125] According to the interception period t, respectively intercept the current time node corresponding to the active power value and the preset time node corresponding to the preset active power setting value;

[0126] Create a power waveform coordinate system, and map the current time node and the active power value as well as the preset time node and the preset active power setting value into the power waveform coordinate system, to obtain a first power waveform graph corresponding to the active power value and a second power waveform graph corresponding to the preset active power setting value, wherein the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values;

[0127] Collect the first highest peak value, the first lowest peak value and the first period time corresponding to different peak value change cycles in the first power waveform diagram, and calculate the difference between the first highest peak value and the first lowest peak value to obtain the first power difference corresponding to each peak value change cycle;

[0128] The first power difference is used as a numerator and the first cycle time period corresponding to the first power difference is used as a denominator to calculate to obtain a first power mean corresponding to each peak change cycle in the first power waveform diagram;

[0129] Collect the second highest peak value, the second lowest peak value and the second period time corresponding to different peak value change cycles in the second power waveform diagram, and calculate the difference between the second highest peak value and the second lowest peak value to obtain the second power difference corresponding to each peak value change cycle;

[0130] The second power difference is used as a numerator and the second period time period corresponding to the second power difference is used as a denominator to calculate to obtain a second power mean corresponding to a peak change period in the second power waveform diagram;

[0131] The difference between the first power average value and the second power average value is calculated to obtain an active power error value.

[0132] In another possible implementation of the embodiment of the present application, the PID control formula in the photovoltaic supply module 24 is:

[0133] ;

[0134] Where, e(t) is the active power error value, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, is the error change rate, is the control variable of the discharge power of the energy storage converter.

[0135] Another possible implementation method of the present application embodiment is that the PID control formula in the photovoltaic supply module 24 is the proportionality coefficient, is the integration coefficient, are the differential coefficients, including:

[0136] Will and The initial value is set to zero and adjusted according to the preset growth ratio , until the discharge power of the energy storage converter oscillates at a constant amplitude, determine the current proportional gain And the oscillation period , and according to the proportional gain And the oscillation period Set the proportional coefficient, integral coefficient and differential coefficient in the PID control formula to obtain the integral coefficient after setting , differential coefficient And the proportionality factor , where the proportional coefficient after setting 0.6 , the integral coefficient after setting for , differential coefficient for .

[0137] In another possible implementation of the embodiment of the present application, the system 20 further includes: a state switching module, wherein:

[0138] The state switching module is used to generate a static closing instruction based on the switch node when the voltage fluctuation information and / or the frequency state information meets the preset voltage and frequency standard, and control the static switch circuit corresponding to the static switch node to be closed within a preset time period.

[0139] In another possible implementation of the embodiment of the present application, the generator supply module 25 determines the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power, generates a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and controls multiple groups of diesel generators to supply power to the charging pile, specifically for:

[0140] Input the power demand to be met and the diesel generator supply information into the preset generator motion equation to obtain the input power of the diesel generator;

[0141] Generate diesel power generation instructions based on input power and control multiple sets of diesel generators to supply power to charging piles;

[0142] Among them, the preset generator operation equation is: , where J is the moment of inertia, D is the damping coefficient of the diesel generator, and θ is the rotor angle of the diesel generator. is the mechanical power (input power) of the diesel generator, is the electrical power (output power) of the diesel generator.

[0143] The present application embodiment provides an electronic device, such as Figure 3 As shown, Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, Figure 3The electronic device 300 shown includes: a processor 301 and a memory 303. The processor 301 and the memory 303 are connected, such as through a bus 302. Optionally, the electronic device 300 may also include a transceiver 304. It should be noted that in actual applications, the transceiver 304 is not limited to one, and the structure of the electronic device 300 does not constitute a limitation on the embodiments of the present application.

[0144] The processor 301 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of the embodiments of the present application. The processor 301 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0145] The bus 302 may include a path to transmit information between the above components. The bus 302 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 302 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 3 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0146] The memory 303 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0147] The memory 303 is used to store application code for executing the solution of the embodiment of the present application, and the execution is controlled by the processor 301. The processor 301 is used to execute the application code stored in the memory 303 to implement the content shown in the above method embodiment.

[0148] Among them, electronic devices include but are not limited to: mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0149] A computer-readable storage medium provided in an embodiment of the present application is introduced below. The computer-readable storage medium described below and the method described above can be referenced to each other.

[0150] An embodiment of the present application provides a 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 intelligent linkage method for multi-energy combined power generation are implemented.

[0151] Since the embodiments of the computer-readable storage medium part and the embodiments of the method part correspond to each other, the embodiments of the computer-readable storage medium part refer to the description of the embodiments of the method part.

[0152] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0153] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An intelligent linkage method for multi-energy joint power generation, characterized in that: include: When a charging vehicle is detected, the charging load information, the city power supply information, the photovoltaic power supply information, the converter supply information and the diesel power supply information are obtained, wherein the city power supply information is the city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is the photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is the power supply parameter information of the energy storage converter to the charging pile and the internal control circuit information of the energy storage converter, and the diesel power supply information is the power generation parameter information provided by multiple groups of diesel generators to the charging pile; Determine voltage fluctuation information and frequency status information according to the mains power parameter information, and judge whether the voltage fluctuation information and / or the frequency status information meet the preset voltage and frequency standard; If the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standards, a static switch node is determined based on the converter supply information, and a static switch instruction is generated based on the static switch node to control the static switch circuit corresponding to the static switch node to respond within a preset time period, and the static switch circuit is used to block the connection between the mains and the charging pile, and switch the operation module of the energy storage converter from the grid-connected mode to the off-grid mode to power the charging pile; Determine the photovoltaic power generation power based on the photovoltaic power supply information, and judge whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information; if greater than or equal to, analyze the inverter power generation power of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter, generate a power supply adjustment instruction, and control the photovoltaic power generation system to start to supply power to the charging pile; The analyzing the inverter power generation power of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter to generate a power supply adjustment instruction includes: Determine the active power value of the current mains electricity meter according to the mains electricity parameter information; Performing error calculation between the active power value and a preset active power setting value of the mains electricity meter to obtain an active power error value; The active power value is subjected to error calculation with a preset active power setting value of the mains electricity meter to obtain an active power error value, including: According to the interception period t, respectively intercept the current time node corresponding to the active power value and the preset time node corresponding to the preset active power setting value; Create a power waveform coordinate system, and map the current time node and the active power value and the preset time node and the preset active power setting value into the power waveform coordinate system, to obtain a first power waveform graph corresponding to the active power value and a second power waveform graph corresponding to the preset active power setting value, wherein the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values; Collecting the first highest peak value, the first lowest peak value and the first period time corresponding to different peak value change cycles in the first power waveform diagram, and calculating the difference between the first highest peak value and the first lowest peak value to obtain the first power difference corresponding to each peak value change cycle; Taking the first power difference as a numerator and the first period time period corresponding to the first power difference as a denominator for calculation, a first power mean corresponding to each peak change period in the first power waveform diagram is obtained; Collect the second highest peak value, the second lowest peak value and the second period time corresponding to different peak value change cycles in the second power waveform diagram, and calculate the difference between the second highest peak value and the second lowest peak value to obtain the second power difference corresponding to each peak value change cycle; The second power difference is used as a numerator and the second period time period corresponding to the second power difference is used as a denominator to calculate to obtain a second power mean corresponding to a peak change period in the second power waveform diagram; Calculating the difference between the first power mean and the second power mean to obtain an active power error value; Substituting the active power error value into the PID control formula, the discharge power of the energy storage converter and the output power percentage of the photovoltaic power generation system are obtained; Compare and analyze the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter according to the power to be discharged and the power to be output percentage, so as to obtain the discharge power adjustment value of the energy storage converter and the output power percentage adjustment value of the photovoltaic power generation system; Generate a power supply adjustment method instruction according to the discharge power adjustment value and the output power percentage adjustment value; When it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, the power demand to be met of the load power is determined according to the photovoltaic power generation power and the converter power generation power, and a diesel power generation instruction is generated based on the power demand to be met and the diesel power generation supply information to control the multiple groups of diesel generators to power the charging piles.

2. The intelligent linkage method for multi-energy combined power generation according to claim 1, characterized in that: The PID control formula is: ； Wherein, e(t) is the active power error value, is the proportionality coefficient, is the integration coefficient, is the differential coefficient, is the error change rate, is the control variable of the discharge power of the energy storage converter.

3. The intelligent linkage method for multi-energy combined power generation according to claim 2, characterized in that: Said is the proportionality coefficient, is the integration coefficient, are the differential coefficients, including: The With the The initial value of is set to zero, and the , until the discharge power of the energy storage converter oscillates at a constant amplitude; Determine the current proportional gain And the oscillation period , and according to the proportional gain And the oscillation period The proportional coefficient, the integral coefficient and the differential coefficient in the PID control formula are parameterized to obtain the set integral coefficient. , differential coefficient And the proportionality factor , where the proportional coefficient after setting 0.6 , the integral coefficient after setting for , the differential coefficient for .

4. The intelligent linkage method for multi-energy combined power generation according to claim 1, characterized in that: The method further comprises: generating a static switch instruction based on the static switch node, and controlling a static switch circuit corresponding to the static switch node to respond within a preset time period; and then: If the voltage fluctuation information and / or the frequency status information meets the preset voltage and frequency standard, a static closing instruction is generated based on the switch node to control the static switch circuit corresponding to the static switch node to be closed within a preset time period.

5. The intelligent linkage method for multi-energy combined power generation according to claim 1, characterized in that: The method of determining the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power, generating a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and controlling the multiple groups of diesel generators to supply power to the charging piles includes: Inputting the power demand to be met and the diesel generator supply information into a preset generator motion equation to obtain the input power of the diesel generator; Generate a diesel power generation instruction according to the input power, and control the multiple groups of diesel generators to supply power to the charging pile; Wherein, the preset generator operation equation is: , where J is the moment of inertia, D is the damping coefficient of the diesel generator, and θ is the rotor angle of the diesel generator. is the mechanical power of the diesel generator, is the electrical power of the diesel generator.

6. An intelligent linkage system for multi-energy combined power generation, characterized in that: include: An information acquisition module, for acquiring charging load information, city power supply information, photovoltaic power supply information, converter supply information, and diesel power supply information when a charging vehicle is detected, wherein the city power supply information is city power parameter information provided by the city power supply line to the charging pile, the photovoltaic power supply information is photovoltaic power parameter information provided by the photovoltaic power generation system to the charging pile, the converter supply information is power supply parameter information provided by the energy storage converter to the charging pile and internal control circuit information of the energy storage converter, and the diesel power supply information is power generation parameter information provided by multiple groups of diesel generators to the charging pile; An information judgment module, used to determine voltage fluctuation information and frequency status information according to the mains parameter information, and judge whether the voltage fluctuation information and / or the frequency status information meet a preset voltage and frequency standard; A converter supply module, which is used to determine a static switch node based on the converter supply information if the voltage fluctuation information and / or the frequency status information do not meet the preset voltage and frequency standard, and generate a static switch instruction based on the static switch node, and control the static switch circuit corresponding to the static switch node to respond within a preset time period, wherein the static switch circuit is used to block the connection between the mains and the charging pile, and switch the operation module of the energy storage converter from the grid-connected mode to the off-grid mode to power the charging pile; A photovoltaic supply module, used to determine the photovoltaic power generation power based on the photovoltaic power supply information, and judge whether the photovoltaic power generation power is greater than or equal to the load power in the charging load information; if greater than or equal to, the inverter power generation power of the charging pile is analyzed based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter, and a power supply adjustment instruction is generated to control the photovoltaic power generation system to be turned on to supply power to the charging pile; When the photovoltaic supply module analyzes the inverter power generation power of the charging pile based on the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage inverter and generates a power supply adjustment instruction, it is specifically used to: Determine the active power value of the current mains electricity meter according to the mains electricity parameter information; Performing error calculation between the active power value and a preset active power setting value of the mains electricity meter to obtain an active power error value; When the photovoltaic supply module performs error calculation between the active power value and the preset active power setting value of the mains electricity meter to obtain the active power error value, it is specifically used to: According to the interception period t, respectively intercept the current time node corresponding to the active power value and the preset time node corresponding to the preset active power setting value; Create a power waveform coordinate system, and map the current time node and the active power value and the preset time node and the preset active power setting value into the power waveform coordinate system, to obtain a first power waveform graph corresponding to the active power value and a second power waveform graph corresponding to the preset active power setting value, wherein the X-axis of the power waveform coordinate system is different time nodes, and the Y-axis of the power waveform coordinate system is different active power values; Collecting the first highest peak value, the first lowest peak value and the first period time corresponding to different peak value change cycles in the first power waveform diagram, and calculating the difference between the first highest peak value and the first lowest peak value to obtain the first power difference corresponding to each peak value change cycle; Taking the first power difference as a numerator and the first period time period corresponding to the first power difference as a denominator for calculation, a first power mean corresponding to each peak change period in the first power waveform diagram is obtained; Collect the second highest peak value, the second lowest peak value and the second period time corresponding to different peak value change cycles in the second power waveform diagram, and calculate the difference between the second highest peak value and the second lowest peak value to obtain the second power difference corresponding to each peak value change cycle; The second power difference is used as a numerator and the second period time period corresponding to the second power difference is used as a denominator to calculate to obtain a second power mean corresponding to a peak change period in the second power waveform diagram; Calculating the difference between the first power mean and the second power mean to obtain an active power error value; Substituting the active power error value into the PID control formula, the discharge power of the energy storage converter and the output power percentage of the photovoltaic power generation system are obtained; Compare and analyze the output power percentage of the photovoltaic power generation system and the discharge power of the energy storage converter according to the power to be discharged and the power to be output percentage, so as to obtain the discharge power adjustment value of the energy storage converter and the output power percentage adjustment value of the photovoltaic power generation system; Generate a power supply adjustment method instruction according to the discharge power adjustment value and the output power percentage adjustment value; The generator supply module is used to determine the power demand to be met of the load power according to the photovoltaic power generation power and the converter power generation power when it is detected that the photovoltaic power generation power of the photovoltaic power generation system and the converter power generation power of the energy storage converter cannot meet the load power demand in the charging load information, generate a diesel power generation instruction based on the power demand to be met and the diesel power generation supply information, and control the multiple groups of diesel generators to supply power to the charging piles.

7. An electronic device, characterized in that: The electronic device includes: at least one processor; Memory; At least one application, wherein the at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute an intelligent linkage method for multi-energy combined power generation as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that: include: A computer program is stored which can be loaded by a processor and executes an intelligent linkage method for multi-energy combined power generation as described in any one of claims 1-5.

Images