WO2023000581A1

WO2023000581A1 - Charging control method and device for uninterruptible power supply for new energy power generation system

Info

Publication number: WO2023000581A1
Application number: PCT/CN2021/135654
Authority: WO
Inventors: 胡欣; 黄詹江勇; 陈仲清
Original assignee: 科华数据股份有限公司; 漳州科华电气技术有限公司
Priority date: 2021-07-19
Filing date: 2021-12-06
Publication date: 2023-01-26
Also published as: CN113612272A; CN113612272B

Abstract

The present application is applicable to the technical field of uninterruptible power supplies, and provides a charging control method and device for an uninterruptible power supply for a new energy power generation system. The method comprises: acquiring maximum allowable power and input power of an uninterruptible power supply at current time, and charging parameters of an energy storage device in the uninterruptible power supply at the current time; subtracting the input power at the current time from the maximum allowable power at the current time to obtain surplus power at the current time; determining a charging parameter adjustment amount of the energy storage device at the current time on the basis of the surplus power at the current time and energy storage device parameters; and adjusting the charging parameters of the energy storage device at the current time on the basis of the charging parameter adjustment amount at the current time to obtain the charging parameters of the energy storage device at the next time. According to the present application, by adjusting the charging parameters in real time, the power generation power utilization rate of the new energy power generation system can be improved.

Description

Charging control method and device for uninterruptible power supply of new energy power generation system

This patent application claims priority to Chinese Patent Application No. CN202110813065.8 filed on July 19, 2021. The disclosure of the prior application is incorporated by reference in its entirety into this application.

technical field

The present application belongs to the technical field of uninterruptible power supplies, and in particular relates to a charging control method and device for uninterruptible power supplies of new energy power generation systems.

Background technique

At present, new energy power generation is an important source of electric energy. In order to improve the power supply quality of new energy power generation systems, new energy power generation systems are usually combined with UPS (Uninterruptible Power System, uninterruptible power supply). The energy storage device in the UPS system can store part of the input electric energy when the electric energy is sufficient, as an emergency use, and can also improve the quality of power supply.

However, due to the unstable power generation of the new energy power generation system, the power entering the UPS system will also change in real time. The energy also changes. How to store as much electric energy as possible while ensuring the normal operation of the load, so as to improve the utilization rate of electric energy generated by new energy sources, is still a difficult problem at present.

technical problem

The purpose of this application is to provide a charging control method and device for an uninterruptible power supply of a new energy power generation system, so as to solve the problem of low utilization rate of new energy power generation electric energy.

technical solution

The technical solution adopted by this application is: the first aspect of the embodiment of this application provides a charging control method for an uninterruptible power supply of a new energy power generation system, including:

Data acquisition step: obtain the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device in the uninterruptible power supply at the current moment; the input power is the power input to the uninterruptible power supply of the new energy power generation system;

Power calculation step: subtract the input power from the maximum allowable power at the current moment to obtain the surplus power at the current moment;

Adjustment amount calculation step: determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device;

Parameter determination step: adjust the charging parameters of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment, and obtain the charging parameters of the energy storage device at the next moment.

The second aspect of the embodiment of the present application provides a charging control device for an uninterruptible power supply of a new energy power generation system, including:

The obtaining module is used to obtain the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device inside the uninterruptible power supply at the current moment; the input power is the power input to the uninterruptible power supply of the new energy power generation system;

The power calculation module is used to subtract the input power at the current moment from the maximum allowable power at the current moment to obtain the surplus power at the current moment;

An adjustment amount calculation module, configured to determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device;

The parameter determination module is used to adjust the charging parameters of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment, so as to obtain the charging parameters of the energy storage device at the next moment.

The third aspect of the embodiments of the present application provides an uninterruptible power supply, which is used to implement the steps of the charging control method of the uninterruptible power supply of the new energy power generation system as described above.

The fourth aspect of the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it realizes the charging of the uninterruptible power supply for the new energy power generation system as described above The steps of the control method.

Beneficial effect

The charging control method for the uninterruptible power supply of the new energy power generation system provided by the present application includes: obtaining the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device in the uninterruptible power supply at the current moment ; The input power is the power of the new energy power generation system input to the uninterruptible power supply; the maximum allowable power at the current moment is subtracted from the input power at the current moment to obtain the surplus power at the present moment; based on the surplus power at the present moment and the energy storage The device parameters determine the charging parameter adjustment amount of the energy storage device at the current moment; adjust the charging parameter of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment, and obtain the charging parameter of the energy storage device at the next moment. charging parameters. In this application, through real-time quantitative calculation of the power generated by the new energy power generation system and the power consumption of the uninterruptible power supply, the surplus electricity that has not been charged into the uninterruptible power supply energy storage device at the current moment can be accurately obtained, thereby changing the charging parameters at the next moment and improving The power generation utilization rate of the new energy power generation system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is the implementation flowchart of the charging control method for the uninterruptible power supply of the new energy power generation system provided by the embodiment of the present application;

Fig. 2 is the structural representation of the uninterruptible power supply provided by the embodiment of the present application;

Fig. 3 is a schematic structural diagram of a charging control device for an uninterruptible power supply of a new energy power generation system provided by an embodiment of the present application.

Embodiment of this application

In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

In order to make the purpose, technical solution and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

Referring to Fig. 1, it shows the implementation flow chart of the charging control method for the uninterruptible power supply of the new energy power generation system provided by the embodiment of the present application, which is described in detail as follows:

Step 101, obtain the maximum allowable power and input power of the UPS at the current moment, and the charging parameters of the energy storage device inside the UPS at the current moment; the input power is the power input to the UPS by the new energy power generation system.

Referring to Figure 2, in this embodiment, the front end of the uninterruptible power supply is connected to the new energy power generation system for obtaining electric energy generated by the new energy power generation system; the back end is connected to the load for outputting part of the electric energy obtained by the UPS to the load ; The interior of the UPS also includes an energy storage device for storing part of the electrical energy acquired by the UPS, and outputting the stored electrical energy when necessary, wherein the energy storage device can be a battery.

The maximum allowable power of the uninterruptible power supply at the current moment indicates the maximum power that the uninterruptible power supply can obtain from the new energy power generation system, that is, the active power dispatch value of the new energy power generation system at the current moment. The maximum allowable power depends on the ability of the devices in the UPS to withstand the current. The input power of the uninterruptible power supply at the current moment represents the power actually obtained by the uninterruptible power supply from the new energy power generation system at the current moment, and is also equal to the sum of the power output to the load at the current moment and the power stored in the energy storage device.

The new energy power generation system in this embodiment may be a wind power system. Correspondingly, the front end of the uninterruptible power supply is connected to the wind power system for obtaining the electric energy generated by the wind power system. During the power generation process of the wind power system, the power input to the uninterruptible power supply is equal to the sum of the load power and the charging power. If the input power of the uninterruptible power supply is lower than the power required by the load, it will lead to inverter output protection; if the input power of the uninterruptible power supply is higher than the power required by the load, the excess electric energy needs to be stored in the internal storage of the uninterruptible power supply. In the energy device, the charging power is calculated at this time to determine the charging method that maximizes the utilization rate of electric energy, and at the same time ensures the normal operation of the load.

In step 102, the maximum allowable power at the current moment is subtracted from the input power at the current moment to obtain the surplus power at the current moment.

In this embodiment, the input power at the current moment is subtracted from the maximum allowable power at the current moment, and the surplus power obtained represents the power that the UPS can still obtain and can be used to charge the energy storage device. Storing this surplus power in an energy storage device can improve the utilization rate of electric energy. If the surplus power at the current moment is not greater than 0, it means that the new energy power generation system has no redundant electric energy for the energy storage device to store at the current moment except for the UPS load and the energy storage device.

Step 103: Determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device.

In this embodiment, the parameters of the energy storage device are used to reflect the charging properties of the energy storage device. The parameters of the energy storage device may include the charging efficiency, maximum withstand current, and maximum withstand voltage of the energy storage device; charging status and charging rate. In order to store surplus power in the energy storage device as quickly and safely as possible, it is necessary to determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device.

Step 104: Adjust the charging parameters of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment to obtain the charging parameters of the energy storage device at the next moment.

In this embodiment, since the power generation of the new energy power generation system at each moment may be different, in order to ensure the utilization rate of electric energy at each moment, it is necessary to calculate the charging parameter adjustment amount at each moment in real time, and adjust the energy storage device real-time adjustment of charging parameters. If the charging parameter adjustment amount at the current moment is not greater than 0, the charging parameter will not be adjusted at the next moment.

Optionally, the charging parameters include charging power; the energy storage device parameters include charging efficiency.

Determining the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device includes:

Based on the surplus power and charging efficiency at the current moment, the first adjustment amount calculation formula is used to calculate the charging power adjustment amount of the energy storage device at the current moment. The first adjustment amount calculation formula is:

Among them, Charge_Cur_Add 1 represents the charging power adjustment amount of the energy storage device at the current moment, P represents the surplus power at the current moment, and η represents the charging efficiency.

In this embodiment, the charging efficiency represents the conversion efficiency of the energy storage device to charging electric energy, and the surplus power is multiplied by the charging efficiency, and the result obtained represents the surplus power actually stored in the energy storage device at the current moment, that is, the energy storage device charging power adjustment.

Optionally, the charging parameters include charging current; the parameters of the energy storage device include charging efficiency;

Obtain the charging voltage of the energy storage device at the current moment;

The charging current adjustment amount of the energy storage device at the current moment is calculated based on the second adjustment amount calculation formula, and the second adjustment amount calculation formula is:

Among them, Charge_Cur_Add 2 represents the charging current adjustment amount of the energy storage device at the current moment, P represents the surplus power at the current moment, η represents the charging efficiency, and U_Bat represents the charging voltage of the energy storage device at the current moment.

In this embodiment, after the charging power adjustment amount of the energy storage device is determined, the charging current adjustment amount of the energy storage device may be further determined. Specifically, the charging current adjustment amount of the energy storage device at the charging voltage at the current moment is calculated based on the charging power adjustment amount of the energy storage device and the charging voltage of the energy storage device at the current moment. Then, under the condition that the charging voltage remains unchanged, the charging current can be adjusted to realize the adjustment of the corresponding charging power.

Optionally, the above step 101 includes:

Obtain the three-phase input voltage of the uninterruptible power supply at the current moment;

Extract the active component of the three-phase input voltage of the uninterruptible power supply at the current moment to obtain the active input voltage of the uninterruptible power supply at the current moment;

Calculate the maximum allowable power of the uninterruptible power supply at the current moment based on the active input voltage of the uninterruptible power supply at the current moment and the first power calculation formula, and the first power calculation formula is:

Among them, Input_Power_Max represents the maximum allowable power of the UPS at the current moment, U1 represents the active input voltage of the UPS at the current moment, and I1 _represents the maximum allowable current _of the UPS.

In this embodiment, the maximum allowable power of the UPS at the current moment is the maximum allowable active power, and the maximum allowable power is determined based on the active input voltage of the UPS at the current moment and the maximum allowable current of the UPS. The maximum allowable current of the UPS is related to the internal components of the UPS and is an inherent parameter.

Optionally, obtaining the input power of the uninterruptible power supply at the current moment includes:

Obtain the three-phase input current and three-phase input voltage of the uninterruptible power supply at the current moment;

The active component of the three-phase input current and the active component of the three-phase input voltage of the uninterruptible power supply at the current moment are respectively extracted to obtain the active component of the input current and the active component of the input voltage of the uninterruptible power supply at the current moment;

Based on the input current active component and input voltage active component of the uninterruptible power supply at the current moment, the input power of the uninterruptible power supply at the current moment is calculated using the second power calculation formula, and the second power calculation formula is:

Among them, Input_Power_Curr represents the input power of the UPS at the current moment, U2 represents the active component of the input voltage, and I2 _represents _the active component of the input current.

In this embodiment, the input power of the uninterruptible power supply at the current moment is active power, and the input power is specifically determined based on the active component of the input voltage and the active component of the input current. Extracting the active components of the three-phase input current and the three-phase input voltage may include the following steps:

Carry out clark transformation and park transformation on the three-phase input current in sequence to obtain the active component I _d of the input current and the reactive component I _q of the input current;

Carry out clark transformation and park transformation on the three-phase input voltage in sequence to obtain the active component U _d of the input voltage and the reactive component U _q of the input voltage.

Optionally, before determining the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the energy storage device parameters of the uninterruptible power supply, the method further includes:

The surplus power at the current moment is subtracted from the margin for guaranteed load operation to obtain the surplus power for guaranteed load operation at the current moment.

Correspondingly, the charging parameter adjustment amount of the energy storage device at the current moment is determined based on the surplus power at the current moment and the parameters of the energy storage device, including:

The charging parameter adjustment amount of the energy storage device at the current moment is determined based on the surplus power to ensure load operation at the current moment and the parameters of the energy storage device.

In this embodiment, a margin to ensure load operation is also set, so as to ensure that the UPS can still supply power to the load normally after adjusting the charging parameters of the energy storage device. The value of the margin to ensure load operation needs to be determined according to the actual situation. Correspondingly, the adjustment amount of the charging parameter needs to be determined based on the surplus power after subtracting the margin for ensuring the load operation.

As can be seen from the above, the charging control method for the uninterruptible power supply of the new energy power generation system provided by the present application includes: obtaining the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the energy storage device in the uninterruptible power supply at the current time The charging parameters at the moment; the input power is the power of the new energy power generation system input to the uninterruptible power supply; the maximum allowable power at the moment is subtracted from the input power at the moment to obtain the surplus power at the moment; the surplus power at the moment is based on The power and the parameters of the energy storage device determine the charging parameter adjustment amount of the energy storage device at the current moment; adjust the charging parameter of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment to obtain the energy storage device The charging parameters at the next moment. In this application, through real-time quantitative calculation of the power generated by the new energy power generation system and the power consumption of the uninterruptible power supply, the surplus electricity that has not been charged into the uninterruptible power supply energy storage device at the current moment can be accurately obtained, thereby changing the charging parameters at the next moment and improving The power generation utilization rate of the new energy power generation system.

It should be understood that the sequence numbers of the steps in the above embodiments do not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present application.

The following are device embodiments of the present application, and for details that are not exhaustively described therein, reference may be made to the above-mentioned corresponding method embodiments.

Fig. 3 shows a schematic structural diagram of the charging control device for the uninterruptible power supply of the new energy power generation system provided by the embodiment of the present application. For the convenience of description, only the parts related to the embodiment of the present application are shown, and the details are as follows:

As shown in Figure 3, the charging control device 3 for the uninterruptible power supply of the new energy power generation system includes:

The obtaining module 31 is used to obtain the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device inside the uninterruptible power supply at the current moment; the input power is the power of the new energy power generation system input to the uninterruptible power supply ;

The power calculation module 32 is used to subtract the input power at the current moment from the maximum allowable power at the present moment to obtain the surplus power at the present moment;

An adjustment amount calculation module 33, configured to determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device;

The parameter determination module 34 is configured to adjust the charging parameters of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment, so as to obtain the charging parameters of the energy storage device at the next moment.

Optionally, the charging parameters include charging power; the parameters of the energy storage device include charging efficiency;

The adjustment calculation module 33 is specifically used for:

Obtain the charging voltage of the energy storage device at the current moment;

Based on the surplus power at the current moment, the charging efficiency and the charging voltage of the energy storage device at the current moment, the second adjustment amount calculation formula is used to calculate the charging current adjustment amount of the energy storage device at the current moment, and the second adjustment amount calculation formula is:

Optionally, the acquisition module is specifically used for:

Based on the active input voltage of the uninterruptible power supply at the current moment and the maximum allowable current of the uninterruptible power supply, the maximum allowable power of the uninterruptible power supply at the current moment is calculated using the first power calculation formula, and the first power calculation formula is:

Optionally, the obtaining module 31 is specifically used for:

Optionally, the power calculation module 32 is also used for:

Before determining the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device of the uninterruptible power supply, the surplus power at the current moment is subtracted from the margin to ensure the operation of the load to obtain the guarantee at the current moment Surplus power for load operation;

Correspondingly, the adjustment amount calculation module 33 is also used for:

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used for illustration. In practical applications, the above-mentioned functions can be assigned to different functional units, Completion of modules means that the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment may be integrated into one processing unit, or each unit may exist separately physically, or two or more units may be integrated into one unit, and the above-mentioned integrated units may adopt hardware It can also be implemented in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working process of the units and modules in the above system, reference may be made to the corresponding process in the foregoing method embodiments, and details will not be repeated here.

In the above-mentioned embodiments, the descriptions of each embodiment have their own emphases, and for parts that are not detailed or recorded in a certain embodiment, refer to the relevant descriptions of other embodiments.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the embodiments provided in this application, it should be understood that the disclosed device/terminal and method may be implemented in other ways. For example, the device/terminal embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or Components may be combined or integrated into another system, or some features may be omitted, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated module/unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments in the present application can also be completed by instructing related hardware through computer programs. The computer programs can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps in the above-mentioned various method embodiments can be realized. Wherein, the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory ), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable Storage media do not include electrical carrier signals and telecommunication signals.

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims

A charging control method for an uninterruptible power supply of a new energy power generation system, characterized in that it includes:

Data acquisition step: acquire the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device inside the uninterruptible power supply at the current moment; the input power is the input power of the new energy power generation system. The power of the intermittent power supply;

Power calculation step: subtract the input power from the maximum allowable power at the current moment to obtain the surplus power at the current moment;

Calculation step of adjustment amount: based on the surplus power at the current moment and the parameters of the energy storage device, determine the adjustment amount of the charging parameter of the energy storage device at the current moment;

Parameter determination step: adjusting the charging parameters of the energy storage device at the current moment based on the adjustment amount of the charging parameters at the current moment to obtain the charging parameters of the energy storage device at the next moment.
The charging control method for an uninterruptible power supply of a new energy power generation system according to claim 1, wherein the charging parameters include charging power; the energy storage device parameters include charging efficiency;

The adjustment calculation steps include:

Based on the surplus power and charging efficiency at the current moment, a first adjustment amount calculation formula is used to calculate the charging power adjustment amount of the energy storage device at the current moment, and the first adjustment amount calculation formula is:

Wherein, Charge_Cur_Add 1 represents the charging power adjustment amount of the energy storage device at the current moment, P represents the surplus power at the current moment, and η represents the charging efficiency.
The charging control method for an uninterruptible power supply of a new energy power generation system according to claim 1, wherein the charging parameters include charging current; the energy storage device parameters include charging efficiency;

The adjustment calculation steps include:

Obtain the charging voltage of the energy storage device at the current moment;

Based on the surplus power at the current moment, the charging efficiency and the charging voltage of the energy storage device at the current moment, the second adjustment amount calculation formula is used to calculate the charging current adjustment amount of the energy storage device at the current moment, and the second adjustment amount calculation formula is for:

Wherein, Charge_Cur_Add 2 represents the charging current adjustment amount of the energy storage device at the current moment, P represents the surplus power at the current moment, η represents the charging efficiency, and U_Bat represents the charging voltage of the energy storage device at the current moment.
According to the charging control method for the uninterruptible power supply of the new energy power generation system according to any one of claims 1 to 3, it is characterized in that said obtaining the maximum allowable power of the uninterruptible power supply at the current moment comprises:

Obtain the three-phase input voltage of the uninterruptible power supply at the current moment;

Extracting the active component of the three-phase input voltage of the uninterruptible power supply at the current moment to obtain the active input voltage of the uninterruptible power supply at the current moment;

Based on the active input voltage of the uninterruptible power supply at the current moment, a first power calculation formula is used to calculate the maximum allowable power of the uninterruptible power supply at the current moment, and the first power calculation formula is:

Wherein, Input_Power_Max represents the maximum allowable power of the uninterruptible power supply at the current moment, U1 represents the active input voltage of the uninterruptible power supply at the current moment, and I1 represents the maximum allowable current of the uninterruptible power supply.
According to the charging control method for the uninterruptible power supply of the new energy power generation system according to any one of claims 1 to 3, it is characterized in that said obtaining the input power of the uninterruptible power supply at the current moment comprises:

Obtain the three-phase input current and three-phase input voltage of the uninterruptible power supply at the current moment;

extracting the active component of the three-phase input current and the active component of the three-phase input voltage of the uninterruptible power supply at the current moment, respectively, to obtain the active component of the input current and the active component of the input voltage of the uninterruptible power supply at the current moment;

Based on the input current active component and input voltage active component of the uninterruptible power supply at the current moment, the input power of the uninterruptible power supply at the current moment is calculated using a second power calculation formula, and the second power calculation formula is:

Wherein, Input_Power_Curr represents the input power of the uninterruptible power supply at the current moment, U2 represents the active component of the input voltage, and I2 represents the active component of the input current.
According to the charging control method for the uninterruptible power supply of the new energy power generation system according to any one of claims 1 to 3, it is characterized in that, before the step of calculating the adjustment amount, the method further includes:

The surplus power at the current moment is subtracted from the margin for guaranteed load operation to obtain the surplus power for guaranteed load operation at the current moment;

Correspondingly, the adjustment calculation step includes:

The charging parameter adjustment amount of the energy storage device at the current moment is determined based on the surplus power for ensuring load operation at the current moment and the parameters of the energy storage device.
A charging control device for an uninterruptible power supply of a new energy power generation system, characterized in that it includes:

The acquisition module is used to obtain the maximum allowable power and input power of the uninterruptible power supply at the current moment, and the charging parameters of the energy storage device inside the uninterruptible power supply at the current moment; the input power is the input of the new energy power generation system. The power of the uninterruptible power supply;

The power calculation module is used to subtract the input power at the current moment from the maximum allowable power at the current moment to obtain the surplus power at the current moment;

An adjustment amount calculation module, configured to determine the charging parameter adjustment amount of the energy storage device at the current moment based on the surplus power at the current moment and the parameters of the energy storage device;

The parameter determination module is configured to adjust the charging parameters of the energy storage device at the current moment based on the charging parameter adjustment amount at the current moment, so as to obtain the charging parameters of the energy storage device at the next moment.
The charging control device for an uninterruptible power supply of a new energy power generation system according to claim 7, wherein the charging parameters include charging power; the energy storage device parameters include charging efficiency;

The adjustment calculation module is specifically used for:

Based on the surplus power and charging efficiency at the current moment, a first adjustment amount calculation formula is used to calculate the charging power adjustment amount of the energy storage device at the current moment, and the first adjustment amount calculation formula is:

Wherein, Charge_Cur_Add 1 represents the charging power adjustment amount of the energy storage device at the current moment, P represents the surplus power at the current moment, and η represents the charging efficiency.
An uninterruptible power supply, characterized in that the uninterruptible power supply is used to implement the steps of the charging control method for the uninterruptible power supply of the new energy power generation system as described in any one of claims 1 to 6 above.
A computer-readable storage medium, the computer-readable storage medium is stored with a computer program, characterized in that, when the computer program is executed by a processor, it realizes the new energy as described in any one of claims 1 to 6 above. The steps of the charging control method of the uninterruptible power supply of the power generation system.