Energy flow control method and system supporting intervention of auxiliary power supply

Abstract

The present application relates to the technical field of power supply control. Provided are an energy flow control method and system supporting the intervention of an auxiliary power supply. The method comprises: determining whether a smart electric meter is connected; if the smart electric meter is connected, reading data from the smart electric meter, otherwise, using data from a load-side sensor; when a main power supply is disconnected, performing output power determination on the data from the smart electric meter or the data from the load-side sensor, so as to obtain an output power determination result; and on the basis of the output power determination result, performing energy flow control on battery charging / discharging or a direct-current energy source such as a PV panel by means of a preset energy scheduling closed loop of an auxiliary power supply. The present application can solve the problem of a user being required to independently set a specific mode when a main power supply and an auxiliary power supply are connected using the same switching auxiliary device interface, increasing the costs of usage and learning for the user, and can provide the user with multiple options for alternating-current power input and is simple and easy to use, thereby providing an important guarantee for the emergency safety of an energy system.

Description

Energy flow control method and system supporting auxiliary power supply intervention

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on March 20, 2024, with application number 202410325365.5 and application name “A method and system for energy flow control supporting auxiliary power supply intervention”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of power supply control technology, and in particular to an energy flow control method and system supporting the intervention of an auxiliary power supply. Background Art

[0003] With the proliferation of energy supply options, the demand for energy storage inverters to adapt to diverse power supply methods is also increasing. The existing grid-side / AC-side system only supports AC power access, and the control logic lacks the ability to fully prevent zero power output. It also only supports a single interface for unidirectional auxiliary power sources (generators, etc.), increasing hardware costs. While it supports both primary and auxiliary power sources using the same switching auxiliary device interface, this requires the user to independently configure specific modes, increasing the user learning curve. Therefore, an energy flow control method that supports auxiliary power supply intervention is urgently needed to address the issue of requiring the user to independently configure specific modes when both primary and auxiliary power sources are connected using the same switching auxiliary device interface, increasing the user learning curve.

[0004] Application Contents

[0005] The present application provides an energy flow control method that supports the intervention of an auxiliary power supply, aiming to solve the problem that when the main power supply and the auxiliary power supply are connected to the auxiliary device interface using the same switching function, the user needs to independently set a specific mode, which increases the user's learning cost.

[0006] In a first aspect, the present application provides an energy flow control method supporting the intervention of an auxiliary power supply, the method comprising the steps of:

[0007] Determine whether to connect to a smart meter;

[0008] If the smart meter is connected, the smart meter data is read; otherwise, the load-side sensor data is used;

[0009] When the main power supply is disconnected, output power judgment is performed on the current smart meter data or load-side sensor data to obtain an output power judgment result;

[0010] Based on the output power judgment result, the energy flow of the battery charging and discharging or the DC energy source is controlled through a preset energy scheduling closed loop of the auxiliary power supply.

[0011] Optionally, before the step of reading the smart meter data if the smart meter is connected, and otherwise using the load-side sensor data, the method further includes:

[0012] Reading the enable state of the auxiliary power supply, where the enable state of the auxiliary power supply includes an on state and an off state;

[0013] After reading the on state of the auxiliary power supply, when the main power supply is disconnected, the auxiliary power supply switching signal is sent through the automatic switching signal to switch to the auxiliary power supply.

[0014] Optionally, the step of reading the smart meter data includes:

[0015] Read the user's setting value;

[0016] Based on the user's setting value, the smart meter data is read when the main power is disconnected.

[0017] Optionally, when the main power supply is disconnected, the step of performing output power judgment on the current smart meter data or load-side sensor data to obtain an output power judgment result includes:

[0018] When the main power supply is disconnected, performing a first output power judgment on the current smart meter data or load-side sensor data to determine that the output power needs to be increased;

[0019] A second output power judgment is performed on the current smart meter data or load-side sensor data to determine that the output power needs to be reduced.

[0020] Optionally, the step of controlling the battery charging and discharging or the DC energy source energy flow through a preset auxiliary power supply energy scheduling closed loop based on the output power judgment result includes:

[0021] When the output power judgment result is to increase the output power, the energy flow of the battery charging and discharging or the DC energy source is increased through the preset energy scheduling closed loop of the auxiliary power supply, and the energy flow input of the auxiliary power supply is reduced in the steady-state regulation stage;

[0022] When the output power judgment result is to reduce the output power, the energy flow of the battery charging and discharging or the DC energy source is maintained through the preset energy scheduling closed loop of the auxiliary power supply, and the system output is cut off.

[0023] Optionally, after the step of controlling the battery charging and discharging or the DC energy source through a preset energy flow control closed loop of the auxiliary power supply based on the output power judgment result, the method further includes:

[0024] When the main power supply is restored, a signal for switching from the auxiliary power supply to the main power supply is sent through the automatic switching signal, switching from the auxiliary power supply to the main power supply side, and exiting the preset auxiliary power supply energy scheduling closed loop, restoring normal user energy scheduling configuration.

[0025] In a second aspect, the present application also provides an energy flow control system that supports the intervention of an auxiliary power supply, and the energy flow control system that supports the intervention of an auxiliary power supply is used to execute an energy flow control method that supports the intervention of an auxiliary power supply provided in an embodiment of the present application.

[0026] On the third aspect, the present application also provides a hybrid energy storage inverter embedded computer real-time operating system, the system including: a hardware computer platform and an energy flow control system that supports the intervention of an auxiliary power supply, the hardware computer platform is provided with an energy management system, and the energy flow control system that supports the intervention of an auxiliary power supply provided in the embodiment of the present application is embedded in the hardware computer platform management system.

[0027] In a fourth aspect, the present application also provides an electronic device comprising: a memory, a processor, and a computer program stored on the memory and runnable on the processor. When the processor executes the computer program, the steps of an energy flow control method supporting auxiliary power intervention provided in an embodiment of the present application are implemented.

[0028] In a fifth aspect, 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 an energy flow control method supporting auxiliary power intervention provided in an embodiment of the application are implemented.

[0029] Beneficial effects of the present application: The present application provides an energy flow control method that supports the intervention of an auxiliary power supply. By judging whether a smart meter is connected, if a smart meter is connected, the smart meter data is read, otherwise the load-side sensor data is used, and when the main power supply is disconnected, the output power is judged on the current smart meter data or the load-side sensor data, thereby obtaining the output power judgment result, and according to the output power judgment result, the energy flow of DC energy sources such as battery charging and discharging or PV photovoltaic panels is controlled through a preset auxiliary power supply energy scheduling closed loop. This can solve the problem that when the main power supply and auxiliary power supply are connected using the same switching auxiliary device interface, the user needs to independently set a specific mode, which increases the user's learning cost. It can provide users with a variety of options for AC power input and is simple and easy to use, providing important protection for the emergency safety of the energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] FIG1 is a flow chart of an energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application;

[0032] FIG2 is a flow chart of another energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application;

[0033] FIG3 is a hardware device connection diagram of an energy flow control method supporting auxiliary power intervention provided by an embodiment of the present application;

[0034] FIG4 is a modular structure diagram of an energy flow control method supporting the intervention of an auxiliary power supply provided in an embodiment of the present application;

[0035] FIG5 is a flowchart of another energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application;

[0036] FIG6 is a schematic structural diagram of an energy flow control system supporting the intervention of an auxiliary power supply provided by an embodiment of the present application;

[0037] 7 is a schematic structural diagram of a real-time operating system for an embedded computer of a hybrid energy storage inverter provided in an embodiment of the present application;

[0038] FIG8 is a schematic structural diagram of an electronic device provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0039] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] This application determines whether a smart meter is connected. If so, it reads the smart meter data; otherwise, it uses the load-side sensor data. When the main power supply is disconnected, it performs output power judgment on the current smart meter data or the load-side sensor data to obtain the output power judgment result. Based on the output power judgment result, the energy flow of DC energy sources such as battery charging and discharging or PV photovoltaic panels is controlled through a preset auxiliary power supply energy scheduling closed loop. This can solve the problem that when the main power supply and auxiliary power supply are connected using the same switching auxiliary device interface, the user needs to independently set a specific mode, which increases the user's learning cost. It can provide users with multiple options for AC power input and is simple and easy to use, providing important protection for the emergency safety of the energy system.

[0041] Example 1

[0042] As shown in FIG1 , FIG1 is a flow chart of an energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application. The energy flow control method supporting the intervention of an auxiliary power supply includes the following steps:

[0043] 101. Determine whether to connect to a smart meter.

[0044] In an embodiment of the present application, the energy flow control method supporting the intervention of an auxiliary power supply is applied to a real-time operating system for an embedded computer in a hybrid energy storage inverter. An auxiliary power supply can be understood as a backup power source that provides power to a primary device or system. The auxiliary power supply supports bidirectional and unidirectional power supply capabilities for various energy types. The auxiliary power supply can be a generator, oil engine, diesel generator, or other type of generator.

[0045] Smart meters are electronic devices that monitor and record electricity usage in real time. They feature digital displays that show real-time power usage, remaining power, and other information. They also support remote meter reading, transmitting data via wireless communication to a remote server or local computer system. This allows users and power companies to monitor electricity usage in real time, enabling more accurate billing and more efficient energy management.

[0046] 102. If a smart meter is connected, read the smart meter data; otherwise, use the load-side sensor data.

[0047] In the embodiment of the present application, the above-mentioned smart meter data may be smart meter parameters and load status conditions.

[0048] The load-side sensor is a detection device used to measure the load current and voltage in a circuit. The load-side sensor data includes but is not limited to voltage, current, frequency and other data.

[0049] In some embodiments, AC sensor data may also be used. An AC sensor is a device that measures the load current and voltage in a circuit. AC sensor data refers to parameters such as voltage and current in the AC circuit. AC sensor data is measured by sensors to monitor the operating status of the circuit.

[0050] Furthermore, the user's setting values ​​are read, and based on the user's setting values, and when the main power is disconnected, the parameters and load status conditions of the smart meter are read. If the smart meter is not connected, the parameters and load status conditions of the load side sensor and the parameters and load status conditions of the AC side sensor are read.

[0051] The above user settings include generator function switch on, connected generator power, generator mode setting, meter status, etc.

[0052] 103. When the main power supply is disconnected, the output power is judged based on the current smart meter data or the load-side sensor data to obtain an output power judgment result.

[0053] In the embodiment of the present application, the above-mentioned main power supply can be understood as the main power supply that provides power support for the entire device or system, including but not limited to the AC side, AC side, grid side, etc.

[0054] The above output power determination can be understood as a process of determining the output power of the system based on the data from the smart meter.

[0055] The above output power judgment result includes increasing the output power and decreasing the output power.

[0056] It should be noted that after the main power supply is disconnected and switched to the auxiliary power supply, the smart meter or load-side sensor parameters and load status conditions are read to determine whether it is necessary to increase or decrease the output power of DC energy sources such as battery charging and discharging or PV photovoltaic panels.

[0057] 104. Based on the output power judgment result, the energy flow of the battery charging and discharging or DC energy source is controlled through the preset energy scheduling closed loop of the auxiliary power supply.

[0058] In an embodiment of the present application, the above-mentioned preset energy scheduling closed loop of the auxiliary power supply can assist the power supply bidirectional dual-threaded power energy flow scheduling control closed loop. The auxiliary power supply bidirectional dual-threaded power energy flow scheduling control closed loop can be understood as a bidirectional dual-threaded closed-loop energy flow control method. Through the bidirectional dual-threaded closed-loop energy flow control, it can always maintain stable power scheduling, always establish a complete data flow, and provide stable, safe and reliable one-way auxiliary power access for the equipment. The above-mentioned auxiliary power supply bidirectional dual-threaded power energy flow scheduling control closed loop can monitor and adjust the distribution of energy in real time to ensure the stable operation of the system.

[0059] The above-mentioned bidirectional means that the inverter obtains multi-terminal data communication on the bus and returns control values; the above-mentioned dual-thread means that the inverter uses battery charging and discharging energy and inverter output energy to synchronously control the power energy flow of the system when controlling the energy flow power.

[0060] The above-mentioned DC energy source is a PV photovoltaic panel or the like.

[0061] The above energy flow control can be understood as adjusting the distribution and utilization of energy to maintain the stability and balance of the system.

[0062] In one possible embodiment, when the output power judgment result is to increase the output power, the energy flow of the battery charging and discharging or DC energy sources such as PV photovoltaic panels is increased through the preset auxiliary power supply energy scheduling closed loop, so as to maximize the charging and discharging power of the inverter and the battery, and adjust the inverter output energy in the steady-state regulation stage to reduce the auxiliary power supply energy flow input and no energy will be output to the auxiliary power supply node, thereby preventing impact on the auxiliary power supply equipment that only has unidirectional energy output capability, resulting in irreversible damage.

[0063] The above steady-state regulation stage can be understood as the system remaining in a stable state.

[0064] In another possible embodiment, when the output power judgment result is to reduce the output power, the energy flow of the battery charging and discharging or DC energy sources such as PV photovoltaic panels is maintained through the preset auxiliary power supply energy scheduling closed loop, and the inverter output energy responds to cut off the output in milliseconds to avoid instantaneous energy overflow to the auxiliary power supply node. The dual-thread control cooperates with each other and complements each other, and does not use a single control data as the only energy scheduling flow reference value, so it has good steady-state regulation capability and extremely high transient protection capability.

[0065] It should be noted that when this application uses a smart meter, zero power output is achieved according to the meter power scheduling; when using AC side sensor data and load side sensor data, all sensor data can be used to calculate the energy flow circulating within the system to prevent power from being output to the outside of the system.

[0066] In an embodiment of the present application, after the main power supply loses its power supply capability, the present application can send a switching auxiliary power supply signal through an automatic switching signal, switch to the auxiliary power supply mode, and control the energy flow of DC energy sources such as battery charging and discharging or PV photovoltaic panels through a preset auxiliary power supply energy scheduling closed loop. When the main power supply resumes its power supply capability, the automatic switching device switches from the auxiliary power supply side to the main power supply side, turns off the auxiliary power supply, and exits the power supply bidirectional dual-thread power energy scheduling control closed loop, restoring the original user setting mode.

[0067] In this embodiment, the present application can utilize the existing AC power interface to provide the main power supply and auxiliary power supply as system AC energy to users through an automatic switching device without increasing hardware costs. The closed-loop energy flow control loop of the auxiliary power supply can make the energy flow stable, safe and reliable. The power output of the entire inverter and the battery charging and discharging power both follow the energy flow closed loop under the auxiliary power supply, precisely controlling energy overflow and reducing the risk of damage caused by the auxiliary power supply being a unidirectional power supply, so as to solve the problem that the inverter equipment does not have auxiliary power access when leaving the factory, provide a safe and reliable solution, and optimize product performance.

[0068] In an embodiment of the present application, a method is used to determine whether a smart meter is connected; if so, the smart meter data is read; otherwise, the load-side sensor data is used; when the main power supply is disconnected, the output power is determined based on the current smart meter data or the load-side sensor data to obtain an output power determination result; and based on the output power determination result, the energy flow of the battery charge / discharge or the DC energy source is controlled through a preset energy scheduling closed loop of the auxiliary power supply. By determining whether a smart meter is connected, reading the smart meter data if the smart meter is connected, otherwise, the load-side sensor data is used, and when the main power supply is disconnected, the output power is determined based on the current smart meter data or the load-side sensor data to obtain an output power determination result, and based on the output power determination result, the energy flow of the battery charge / discharge or the DC energy source such as the PV photovoltaic panel is controlled through a preset energy scheduling closed loop of the auxiliary power supply, this method can solve the problem of requiring the user to independently set a specific mode when the main power supply and the auxiliary power supply are connected through the same switching auxiliary device interface, which increases the user's learning cost. This method can provide users with multiple options for AC power input and is simple and easy to use, providing important protection for energy system emergency safety.

[0069] Optionally, before the step of reading the smart meter data if a smart meter is connected, or using the load side sensor data otherwise, the enable status of the auxiliary power supply can also be read; when the auxiliary power supply is turned on, when the main power supply is disconnected, a switching auxiliary power supply signal is sent through an automatic switching signal to switch to the auxiliary power supply.

[0070] In the embodiment of the present application, the enabling state of the auxiliary power supply includes an on state and an off state.

[0071] The auxiliary power supply can be enabled in two states: an on state and an off state. The on state indicates that the auxiliary power supply has been connected to the system via the connector and is ready to provide power to the system. The off state indicates that the auxiliary power supply has stopped functioning.

[0072] The above-mentioned automatic switching signal is sent by the AC side multi-terminal switching device. The AC side multi-terminal power supply switching device is a device with automatic switching and outputting corresponding level signals. When the main power supply is disconnected, the device will output a level signal to inform the link device that "the main power supply is disconnected" and switch to the auxiliary power supply in the hardware circuit, which can provide the inverter with switchable AC input capability.

[0073] It should be noted that the purpose of reading the enabling state of the auxiliary power supply is to understand whether the auxiliary power supply is currently in a normal working state.

[0074] Furthermore, when it is read that the enabling state of the auxiliary power supply is on, when the main power supply has no power output, a switching signal will be sent through the automatic switching device to switch to the auxiliary power supply.

[0075] Optionally, in the step of reading the smart meter data, a user setting value may be read; based on the user setting value, the smart meter data is read when the main power supply is disconnected.

[0076] In the embodiment of the present application, the above-mentioned user setting values ​​include the generator function switch being turned on, the connected generator power, the generator mode setting, the meter status, etc.

[0077] The above-mentioned smart meter data includes smart meter parameters and load status conditions, etc.

[0078] It should be noted that the user's setting values ​​are read first. When the main power is disconnected, the system switches to the auxiliary power supply and then reads the smart meter parameters and load status.

[0079] Optionally, in the step of performing an output power judgment on the current smart meter data or load-side sensor data to obtain an output power judgment result when the main power supply is disconnected, a first output power judgment can be performed on the current smart meter data or load-side sensor data to determine that the output power needs to be increased; and a second output power judgment can be performed on the current smart meter data or load-side sensor data to determine that the output power needs to be reduced.

[0080] In an embodiment of the present application, when the main power supply is disconnected, it is necessary to determine through a first output power judgment based on the current smart meter or load-side sensor parameters and load status operating conditions, and determine whether the output power of a DC energy source such as battery charging and discharging or a PV photovoltaic panel needs to be increased; when the main power supply is disconnected, it is necessary to determine through a second output power judgment based on the current smart meter or load-side sensor parameters and load status operating conditions, and determine whether the output power of a DC energy source such as battery charging and discharging or a PV photovoltaic panel needs to be reduced.

[0081] It should be noted that after the main power supply is disconnected and switched to the auxiliary power supply, the smart meter parameters or load-side sensors and load status conditions are read to determine whether it is necessary to increase or decrease the output power of DC energy sources such as battery charging and discharging or PV photovoltaic panels.

[0082] Optionally, in the step of controlling the energy flow of the battery charging and discharging or the DC energy source through the energy flow scheduling closed loop of the preset auxiliary power supply based on the output power judgment result, when the output power judgment result is to increase the output power, the energy flow of the battery charging and discharging or the DC energy source can be increased through the energy scheduling closed loop of the preset auxiliary power supply, and the energy flow input of the auxiliary power supply can be reduced in the steady-state regulation stage; when the output power judgment result is to reduce the output power, the energy flow of the battery charging and discharging or the DC energy source can be maintained through the energy scheduling closed loop of the preset auxiliary power supply, and the system output can be cut off.

[0083] In an embodiment of the present application, the above-mentioned preset auxiliary power supply energy scheduling closed loop can be understood as an auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop. The auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop can be understood as a bidirectional dual-thread closed-loop energy flow control method. Through the bidirectional dual-thread closed-loop energy flow control, it can always maintain stable power scheduling, always establish a complete data flow, and provide stable, safe and reliable one-way auxiliary power access for the equipment. The above-mentioned auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop can monitor and adjust the distribution of energy in real time to ensure the stable operation of the system.

[0084] The above-mentioned bidirectional means that the inverter obtains multi-terminal data communication on the bus and returns control values; the above-mentioned dual-thread means that the inverter uses battery charging and discharging energy and inverter output energy to synchronously control the power energy flow of the system when controlling the energy flow power.

[0085] The above-mentioned DC energy source is a PV photovoltaic panel or the like.

[0086] The above system refers to a hybrid energy storage inverter.

[0087] It should be noted that when the output power judgment result is to increase the output power, the energy flow of DC energy sources such as battery charging and discharging or PV photovoltaic panels is increased through the preset auxiliary power supply energy scheduling closed loop, so as to maximize the charging and discharging power of the inverter and battery, and adjust the inverter output energy in the steady-state regulation stage to reduce the auxiliary power supply energy flow input and no energy will be output to the auxiliary power supply node, so as to prevent impact on auxiliary power supply equipment that only has unidirectional energy output capability, resulting in irreversible damage.

[0088] The above steady-state regulation stage can be understood as the system remaining in a stable state.

[0089] In another possible embodiment, when the output power judgment result is to reduce the output power, the energy flow of the battery charging and discharging or DC energy sources such as PV photovoltaic panels is maintained through the preset auxiliary power supply energy scheduling closed loop, and the inverter output energy responds to cut off the output in milliseconds to avoid instantaneous energy overflow to the auxiliary power supply node. The dual-thread control cooperates with each other and complements each other, and does not use a single control data as the only energy scheduling flow reference value, so it has good steady-state regulation capability and extremely high transient protection capability.

[0090] Optionally, after the step of controlling the energy flow of the battery charging and discharging or the DC energy source through the energy flow scheduling closed loop of the preset auxiliary power supply based on the output power judgment result, when the main power supply is restored, a signal is sent to switch from the auxiliary power supply to the main power supply through an automatic switching signal, and the switch is made from the auxiliary power supply side to the main power supply side, and the preset auxiliary power supply energy scheduling control closed loop is exited to restore normal user energy scheduling configuration.

[0091] In an embodiment of the present application, when the main power supply is restored, the system switches from the auxiliary power supply side to the main power supply side through an automatic switching signal. At this time, the auxiliary power supply is turned off, that is, the auxiliary power supply is no longer used for energy scheduling, and the preset auxiliary power supply energy scheduling control closed loop is exited, and the normal user energy scheduling configuration is restored.

[0092] In the embodiment of the present application, the present application maintains stable power scheduling and establishes a complete data flow through bidirectional dual-threaded closed-loop energy flow control, providing the equipment with stable, safe and reliable one-way auxiliary power access, solving the problem that the inverter equipment does not have auxiliary power access when leaving the factory, providing a safe and reliable solution, and optimizing product performance.

[0093] Example 2

[0094] In this embodiment, FIG2 is a flowchart of another energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application. Specifically, the method includes the following steps:

[0095] 200. Start.

[0096] 201. Is smart meter connected?

[0097] If a smart meter is connected, the process proceeds to step 202 ; otherwise, the process proceeds to step 203 using the AC side sensor data and the load side sensor data.

[0098] The above-mentioned smart meter is an electronic device that can monitor and record electricity usage in real time.

[0099] 202. Use smart meter data.

[0100] Among them, the smart meter data includes the parameters of the smart meter and the load status and working conditions.

[0101] 203. Use sensor data (AC side and load side).

[0102] The AC-side sensor data may be understood as parameters such as voltage and current in the AC circuit; the load-side sensor data includes but is not limited to voltage, current, frequency, and other data.

[0103] 204. Is the current on the AV side input?

[0104] If yes, go to step 206; otherwise, go to step 205.

[0105] 205. Is the current on the AC side output?

[0106] If yes, proceed to step 206 ; otherwise, proceed to step 208 .

[0107] 206. Add DC side PV and BAT side power output energy scheduling.

[0108] 207. Reduce DC PV and BAT side power output energy scheduling.

[0109] 208. Has the main power supply been restored?

[0110] If yes, proceed to step 210 ; otherwise, proceed to step 209 .

[0111] 209. Auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop①.

[0112] Among them, the auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop is a control system. Through bidirectional dual-thread power energy flow scheduling control, it always maintains stable power scheduling and always establishes a complete data flow, providing stable, safe and reliable one-way auxiliary power access for the equipment.

[0113] 210. End.

[0114] In the embodiment of the present application, the present application can utilize the existing AC power interface to provide the main power supply and auxiliary power supply as system AC energy to users through an automatic switching device without increasing hardware costs. The closed-loop energy flow control loop of the auxiliary power supply can make the energy flow stable and safe and reliable. The power output of the entire inverter and the battery charging and discharging power both follow the energy flow closed loop under the auxiliary power supply, precisely controlling energy overflow and reducing the risk of damage caused by the auxiliary power supply being a unidirectional power supply. This solves the problem that the inverter equipment does not have auxiliary power access when it leaves the factory, provides a safe and reliable solution, and optimizes product performance.

[0115] Example 3

[0116] In this embodiment, Figure 3 illustrates various circuit connection methods for a user-friendly hardware platform supporting the energy flow control method of auxiliary power intervention, as provided in this embodiment. Specifically, this includes PV photovoltaic DC, battery-side DC, energy storage hybrid inverter, smart meter, AC-side multi-terminal power switching device, power-consuming equipment / loads, mains / main power supply, auxiliary power supply / generator, and two or more auxiliary power supplies. With the terminal device inverter as the core, the data capabilities of all link devices are utilized.

[0117] The PV photovoltaic DC cable has the ability to output energy unidirectionally to the inverter. The battery-side DC has the ability to input and output energy bidirectionally to the inverter. The main power source connected to the AC multi-terminal power supply switching device has the ability to input and output energy bidirectionally to the inverter. The auxiliary power source can be a power supply device that only outputs energy unidirectionally to the inverter or a power supply device with bidirectional capabilities.

[0118] Specifically, the smart meter can be connected to the inside or outside of the AC side multi-terminal power supply switching device. When the meter is damaged or connected to the outside ②, this application will temporarily call the inverter grid side port data. After the auxiliary power supply is restored, try to call the smart meter data connected to the ① or ② side (① or ② side can be selected or not connected, instead of having to be connected at all). If there is no valid data to use, the inverter grid side port data will continue to be called to ensure the data link capability of the energy flow.

[0119] It should be noted that ① indicates a cable connection with multiple connection methods / positions, and ② indicates the side close to the power supply rather than the side close to the inverter port.

[0120] The aforementioned inverter grid-side port data includes but is not limited to voltage, current, power, and frequency. Electrical equipment / loads can be connected to the inverter grid-side port. Side ① is connected to the inverter's EPS load port; energy dispatch will synchronize the load port data with the inverter grid-side port or smart meter data. Side ② is directly connected to the AC power supply; energy dispatch and control will utilize the inverter grid-side port or smart meter data. Connecting to either side ① or ② provides timely energy response.

[0121] In the embodiment of the present application, with the inverter as the core, the grid-side port is connected to the main power supply and the auxiliary power supply through the AC-side multi-terminal switching device. Regardless of whether the connection method is inside or outside the AC-side multi-terminal power supply switching device, and regardless of whether the auxiliary power supply is connected inside or outside the smart meter, the present application can identify it, which greatly reduces the safety hazards caused by incorrect wiring, reduces the difficulty of construction and installation, and improves the user's requirements for flexible and convenient installation.

[0122] Example 4

[0123] In this embodiment, Figure 4 is a modular structure diagram of an energy flow control method supporting auxiliary power intervention provided by an embodiment of the present application. This includes: smart meter monitoring, DC side monitoring, AC side monitoring, load side monitoring, multi-terminal switching monitoring, the energy flow control method supporting auxiliary power intervention provided by this application, and control instructions.

[0124] Among them, the raw data sampling module is used to read the auxiliary power supply enable status, read the power output status of the main power supply, and identify and monitor the real-time status of the auxiliary power supply and the main power supply.

[0125] The energy processing module is used to execute an energy flow control method supporting the intervention of an auxiliary power supply provided in this application.

[0126] The logic control module is used to call an energy flow control method supporting auxiliary power intervention provided in this application to implement energy flow control for auxiliary power intervention.

[0127] In this embodiment, the smart meter, DC side, load side, AC side, and multi-terminal switching all have data exchange capabilities. When the user does not have an external AC side automatic switching device, the auxiliary power supply bidirectional dual-thread power energy scheduling control closed loop can still be used to ensure that the unidirectional power supply equipment is reasonably protected in the energy ring connected to the inverter and is not affected by impact.

[0128] Example 5

[0129] In this embodiment, FIG5 is a flow chart of another energy flow control method supporting the intervention of an auxiliary power supply provided by an embodiment of the present application, which specifically includes the following steps:

[0130] Logical step 1: Read the auxiliary power function on status and auxiliary power / generator status.

[0131] Logical step 2: Determine the working conditions of the smart meter and load.

[0132] Logical step 3: Based on the power consumption mode, start the generator closed-loop link energy scheduling auxiliary power supply bidirectional dual-thread power energy flow scheduling control closed loop①.

[0133] Among them, the generator can be understood as one of the auxiliary power sources.

[0134] Logical step 4: Decide whether to maintain the control loop based on the restoration of the main power (grid) and load fluctuations.

[0135] Among them, the main power supply has not resumed normal power supply. According to the output power of the smart meter parameters and load status conditions, the energy flow of battery charging and discharging is controlled through the auxiliary power supply bidirectional dual-thread power energy scheduling control closed loop.

[0136] When the main power supply resumes normal power supply, the generator operation mode will be exited and normal user energy scheduling and allocation will be restored.

[0137] Logical step 5: After the generator operating condition is exited, normal user energy scheduling and configuration are restored.

[0138] Among them, when the main power supply resumes normal power supply, it switches from the auxiliary power supply side to the main power supply side, shuts down the generator, exits the auxiliary power supply bidirectional dual-thread power energy scheduling control closed loop, restores the original user setting mode, and normal energy scheduling configuration.

[0139] In this embodiment, the present application uses bidirectional dual-threaded closed-loop energy flow control to always maintain stable power scheduling and always establish a complete data flow, thereby solving problems such as poor compatibility of energy systems. The unidirectional auxiliary power supply may have unstable factors such as frequency and phase. Direct access to the system will make the system unstable and unreliable, and even cause the risk of damage to multiple devices. The present application provides stable, safe and reliable unidirectional auxiliary power supply access for the equipment, and uses a trusted energy flow scheduling mechanism to help different link devices access the closed-loop system, thereby promoting the sustainable development of energy storage link equipment.

[0140] Example 6

[0141] Based on the above-mentioned first embodiment, as shown in FIG6 , an embodiment of the present application provides a schematic structural diagram of an energy flow control system that supports the intervention of an auxiliary power supply. The energy flow control system that supports the intervention of an auxiliary power supply is used to execute the energy flow control method that supports the intervention of an auxiliary power supply provided in the embodiment of the present application. The energy flow control system that supports the intervention of an auxiliary power supply includes:

[0142] The first judgment module 601 is used to judge whether a smart meter is connected;

[0143] A first reading module 602 is configured to read the smart meter data if the smart meter adjustment is connected, and otherwise use the load-side sensor data;

[0144] The second judgment module 603 is configured to, when the main power supply is disconnected, perform output power judgment on the current smart meter data or load-side sensor data to obtain an output power judgment result;

[0145] The control module 604 is configured to control the battery charging and discharging or the DC energy source energy flow through a preset energy scheduling closed loop of the auxiliary power source based on the output power judgment result.

[0146] Optionally, the device further includes:

[0147] A second reading module is used to read the enabling state of the auxiliary power supply, where the enabling state of the auxiliary power supply includes an on state and an off state;

[0148] The first switching module is used to read the on state of the auxiliary power supply and, when the main power supply is disconnected, send an auxiliary power supply switching signal through an automatic switching signal to switch to the auxiliary power supply.

[0149] Optionally, the first reading module 602 includes:

[0150] The first reading submodule is used to read the user's setting value;

[0151] The second reading submodule is used to read the smart meter data based on the user's setting value when the main power is disconnected.

[0152] Optionally, the second determining module 603 includes:

[0153] A first judgment submodule is configured to, when the main power supply is disconnected, perform a first output power judgment on the current smart meter data or load-side sensor data to determine whether the output power needs to be increased;

[0154] The second judgment submodule is configured to perform a second output power judgment on the current smart meter data or load-side sensor data to determine that the output power needs to be reduced.

[0155] Optionally, the control module 604 includes:

[0156] A first processing submodule is configured to increase the energy flow of the battery charging and discharging or the DC energy source through a preset energy scheduling closed loop of the auxiliary power supply when the output power judgment result is to increase the output power, and reduce the energy flow input of the auxiliary power supply in the steady-state regulation stage;

[0157] The second processing submodule is used to maintain the energy flow of battery charging and discharging or DC energy source through a preset auxiliary power supply energy scheduling closed loop and cut off the system output when the output power judgment result is to reduce the output power.

[0158] Optionally, the device further includes:

[0159] The second switching module is used to send a signal to switch from the auxiliary power supply to the main power supply through the automatic switching signal when the main power supply is restored, switch from the auxiliary power supply to the main power supply side, and exit the preset auxiliary power supply energy scheduling closed loop to restore normal user energy scheduling configuration.

[0160] Example 7

[0161] Based on the sixth embodiment described above, Figure 7 is a schematic diagram of the structure of a real-time operating system for an embedded computer in a hybrid energy storage inverter, provided in an embodiment of the present application. The system includes a hardware computer platform and an energy flow control system that supports the intervention of an auxiliary power supply. The hardware computer platform is equipped with an energy management system, and the energy flow control system that supports the intervention of an auxiliary power supply, provided in the embodiment of the present application, is embedded in the hardware computer platform management system.

[0162] In this embodiment, the present application can run in a real-time operating system of an embedded computer of a hybrid energy storage inverter, with the inverter as a hardware computer platform and an energy management system (EMS) provided on the hardware platform. The energy flow control system of the present application that supports the intervention of an auxiliary power supply is embedded in the energy management system EMS.

[0163] This application achieves the energy flow control closed-loop capability of auxiliary power access through the inverter device system firmware update, without increasing any hardware costs and additional overhead, solving the problem that the inverter equipment does not have auxiliary power access when it leaves the factory, providing a safe and reliable solution, and optimizing product performance.

[0164] This application uses bidirectional, dual-threaded closed-loop energy flow control to always maintain stable power scheduling and establish a complete data flow, thereby solving problems such as poor compatibility of energy systems. The unidirectional auxiliary power supply may have unstable factors such as frequency and phase. Direct access to the system will make the system unstable and unreliable, and may even cause the risk of damage to multiple devices. This application provides stable, safe and reliable unidirectional auxiliary power supply access for the equipment, and uses a trusted energy flow scheduling mechanism to help different link devices access the closed-loop system, promoting the sustainable development of energy storage link equipment.

[0165] Example 8

[0166] Refer to Figure 8, which is a structural diagram of an electronic device provided in an embodiment of the present application. As shown in Figure 8, it includes: a memory 802, a processor 801, and a computer program for an energy flow control method that supports auxiliary power intervention stored on the memory 802 and can be run on the processor 801.

[0167] The electronic device provided in the embodiment of the present application can implement each process of an energy flow control method supporting the intervention of an auxiliary power supply and can achieve the same beneficial effects. To avoid repetition, it will not be described here.

[0168] An embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of an energy flow control method supporting the intervention of an auxiliary power supply provided in an embodiment of the present application are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0169] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When executed, the program can include the processes in the above-described method embodiments. The computer-readable storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0170] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A method for controlling energy flow with support for intervention of an auxiliary power supply, characterized in that: The method comprises: Determine whether to connect to a smart meter; If the smart meter is connected, the smart meter data is read; otherwise, the load-side sensor data is used; When the main power supply is disconnected, output power judgment is performed on the current smart meter data or load-side sensor data to obtain an output power judgment result; Based on the output power judgment result, the energy flow of the battery charging and discharging or the DC energy source is controlled through a preset energy scheduling closed loop of the auxiliary power supply.

2. The energy flow control method supporting the intervention of an auxiliary power supply according to claim 1, characterized in that: Before the step of reading the smart meter data if the smart meter is connected, and otherwise using the load-side sensor data, the method further includes: Reading the enable state of the auxiliary power supply, where the enable state of the auxiliary power supply includes an on state and an off state; After reading the on state of the auxiliary power supply, when the main power supply is disconnected, the auxiliary power supply switching signal is sent through the automatic switching signal to switch to the auxiliary power supply.

3. The energy flow control method supporting the intervention of an auxiliary power supply according to claim 2, characterized in that: The step of reading the smart meter data includes: Read the user's setting value; Based on the user's setting value, the smart meter data is read when the main power is disconnected.

4. The energy flow control method supporting the intervention of an auxiliary power supply according to claim 3, characterized in that: When the main power supply is disconnected, the step of performing output power judgment on the current smart meter data or load-side sensor data to obtain an output power judgment result includes: When the main power supply is disconnected, performing a first output power judgment on the current smart meter data or load-side sensor data to determine that the output power needs to be increased; A second output power judgment is performed on the current smart meter data or load-side sensor data to determine that the output power needs to be reduced.

5. The energy flow control method supporting the intervention of an auxiliary power supply according to claim 4, characterized in that: The step of controlling the battery charging and discharging or the DC energy source energy flow through a preset auxiliary power supply energy scheduling closed loop based on the output power judgment result includes: When the output power judgment result is to increase the output power, the energy flow of the battery charging and discharging or the DC energy source is increased through the preset energy scheduling closed loop of the auxiliary power supply, and the energy flow input of the auxiliary power supply is reduced in the steady-state regulation stage; When the output power judgment result is to reduce the output power, the energy flow of the battery charging and discharging or the DC energy source is maintained through the preset energy scheduling closed loop of the auxiliary power supply, and the system output is cut off.

6. The energy flow control method supporting the intervention of an auxiliary power supply according to claim 5, characterized in that: After the step of controlling the battery charging and discharging or the DC energy source through a preset energy flow control closed loop of the auxiliary power supply based on the output power judgment result, the method further includes: When the main power supply is restored, a signal for switching from the auxiliary power supply to the main power supply is sent through the automatic switching signal, switching from the auxiliary power supply to the main power supply side, and exiting the preset auxiliary power supply energy scheduling closed loop, restoring normal user energy scheduling configuration.

7. An energy flow control system supporting the intervention of an auxiliary power supply, characterized in that: The energy flow control system supporting the intervention of an auxiliary power source is used to execute an energy flow control method supporting the intervention of an auxiliary power source according to any one of claims 1 to 6.

8. A real-time operating system for an embedded computer of a hybrid energy storage inverter, characterized in that: The system includes: a hardware computer platform and an energy flow control system that supports the intervention of an auxiliary power supply. The hardware computer platform is provided with an energy management system. The energy flow control system that supports the intervention of an auxiliary power supply as described in claim 7 is embedded in the hardware computer platform management system.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the energy flow control method supporting the intervention of an auxiliary power supply as claimed in any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the energy flow control method supporting the intervention of an auxiliary power supply according to any one of claims 1 to 6.

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