A reactive power regulation method and device for a charging pile and an electronic device

Abstract

The application discloses a reactive power regulation method of a charging pile and relates to the field of charging piles. In the method, a command is received from an external command terminal, the command comprising a target charging pile identifier and a corresponding target reactive power value; an active power value output by a working module of the target charging pile is acquired; a reactive power threshold supported by the target charging pile is calculated according to the active power value; the size relationship between the target reactive power value and the reactive power threshold is judged; if the target reactive power value is smaller than the reactive power threshold, the power factor corresponding to the working module is calculated; and the power factor is sent to the working module so that the working module generates corresponding reactive power according to the power factor. The technical scheme provided by the application can automatically generate reactive power to offset the reactive power generated by other equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging piles, in particular to a reactive power regulation method and device for a charging pile and an electronic device. BACKGROUND

[0002] In an electric vehicle charging station, there are usually multiple charging piles and other power equipment, such as lighting, monitoring systems, communication equipment, etc. These devices will cause a phase difference between current and voltage during operation, resulting in the generation of reactive power. Reactive power is a special power in the power grid system, and reactive power does not complete useful power conversion. The existence of reactive power has a great impact on the voltage of the power grid. Lack of effective reactive power compensation will cause voltage fluctuations, thereby affecting the voltage stability of the power system. Unstable voltage can cause damage to power equipment and power grid operation. At the same time, the existence of reactive power will cause distortion of the current waveform, thereby causing harmonics. Harmonics will make the current and voltage waveforms irregular, which can cause equipment oscillation and other problems.

[0003] Therefore, a reactive power regulation method and device for a charging pile and an electronic device are needed to automatically generate reactive power to offset the reactive power generated by other equipment. SUMMARY

[0004] The present application provides a reactive power regulation method and device for a charging pile and an electronic device to automatically generate reactive power to offset the reactive power generated by other equipment.

[0005] In a first aspect of the present application, a reactive power regulation method for a charging pile is provided. The method includes receiving a command sent from an external command terminal, the command including a command type and a target charging pile identifier, the command type including a generate reactive power command and an absorb reactive power command; if the command type is the generate reactive power command, parsing the command to obtain a target reactive power value corresponding to the generate reactive power command; determining a corresponding target charging pile according to the target charging pile identifier; obtaining an active power value output by a working module of the target charging pile; calculating a reactive power threshold supported by the target charging pile according to the active power value; determining the size relationship between the target reactive power value and the reactive power threshold; if the target reactive power value is less than the reactive power threshold, calculating a power factor corresponding to the working module; sending the power factor to the working module, so that the working module generates corresponding reactive power according to the power factor.

[0006] By adopting the above technical solution, the regulation and control of the reactive power of the charging pile are realized by receiving external commands and analyzing the command types. According to the indication in the command, the charging pile can generate or absorb reactive power to adapt to the demand of the power grid. When the target reactive power value is less than the reactive power threshold, the method calculates the power factor corresponding to the working module. By sending the calculated power factor to the working module, the charging pile can adjust the generation of its reactive power to optimize the power factor and reduce the harmonic interference to the power grid. By dynamically adjusting the reactive power, the charging pile can better adapt to the changes of the power grid and improve the stability and reliability of the power grid.

[0007] Optionally, after receiving the command sent from the external command terminal, the method further includes: analyzing the command and extracting the fields contained in the command, the fields including a target charging pile identifier field and a target reactive power value field; and converting the fields into corresponding data types to obtain the target charging pile corresponding to the target charging pile identifier field and the target reactive power value corresponding to the target reactive power value field.

[0008] By adopting the above technical solution, the remote control and management of the charging pile are realized by allowing the external command terminal to send commands. By analyzing the command and extracting the fields therein, the external regulation and control requirements can be quickly understood and responded to. The conversion of the fields in the command into corresponding data types ensures the accuracy of the command parameters, helps to prevent potential problems caused by incorrect input, improves the stability and reliability of the charging pile, and provides specific and accurate settings for the reactive power output through the target reactive power value field and the target reactive power value.

[0009] Optionally, the power factor is sent to the working module so that the working module generates corresponding reactive power according to the power factor, specifically including: adjusting the phase difference between the current and the voltage through the working module so that the power factor corresponding to the phase difference is the target power factor.

[0010] By adopting the above technical solution, the power factor is adjusted to reach the target value by adjusting the phase difference between the current and the voltage, so as to flexibly adapt to the changes of the power system and meet different power factor requirements. By adjusting the phase difference between the current and the voltage, it helps to reduce the generation of harmonics, thereby reducing the harmonic interference to the power grid and improving the stability of the power grid.

[0011] Optionally, the reactive power threshold supported by the charging pile is calculated according to the active power value, and the specific calculation formula is as follows:

[0012] ;

[0013] wherein Q is the reactive power threshold, P max is the active power value, for the power factor range.

[0014] By adopting the technical solution, the reactive power threshold supported by the charging pile is calculated, so that the reactive power output of the charging pile is adjusted according to the current active power value. By using the power factor range to calculate the reactive power threshold, the range of the output reactive power is limited, preventing the charging pile from exceeding the range that can be handled when dynamically adjusting the reactive power.

[0015] Optionally, the power factor corresponding to the working module is calculated, and the specific calculation formula is as follows:

[0016] ;

[0017] wherein cosφ is the power factor, P dc is the direct current power of the working module, Q s is the target reactive power, and β is the efficiency conversion factor.

[0018] By adopting the technical solution, through this formula, the working module can calculate the corresponding power factor cosφ according to the direct current power P dc , the target reactive power Q s and the efficiency conversion factor β. This enables the charging pile to adjust the power factor according to the set reactive power target to adapt to the demand of the power system.

[0019] Optionally, after determining the size relationship between the target reactive power value and the reactive power threshold, the method further comprises: if the target reactive power value is greater than the reactive power threshold, displaying an error message or adjusting the target reactive power value to the reactive power threshold.

[0020] By adopting the technical solution, by taking corresponding measures when the target reactive power value is greater than the reactive power threshold, the output of the reactive power can be prevented from exceeding the predetermined range, preventing unnecessary impact on the power system. This helps to protect the charging pile and the power system from potential abnormal or incorrect settings. At the same time, the target reactive power value can be automatically adjusted to the reactive power threshold, ensuring that the output of the reactive power of the charging pile is within a controllable range.

[0021] Optionally, before calculating the reactive power threshold supported by the charging pile according to the active power value, the method further comprises: obtaining the input power and the output power of the working module of the charging pile; obtaining the efficiency of the charging pile according to the input power and the output power and taking the efficiency as the efficiency conversion factor.

[0022] By adopting the technical scheme, the actual input power and output power are obtained, so that the efficiency of the charging pile is accurately calculated, the efficiency conversion factor is obtained, the relationship between the active power and the reactive power is accurately converted, and the accuracy of calculating the reactive power threshold is improved.

[0023] In a second aspect of the present application, a reactive power regulation device of a charging pile is provided, which comprises an acquisition module, a processing module and a sending module. The acquisition module is configured to receive a command sent from an external command terminal, wherein the command comprises a target charging pile identifier and a corresponding target reactive power value. The acquisition module is further configured to acquire an active power value output by a working module of the target charging pile. The processing module is configured to calculate a reactive power threshold supported by the target charging pile according to the active power value. The processing module is further configured to judge the size relationship between the target reactive power value and the reactive power threshold. The processing module is further configured to calculate a target power factor corresponding to the working module if the target reactive power value is less than the reactive power threshold. The sending module is configured to send the target power factor to the working module, so that the working module adjusts according to the target power factor to generate a corresponding reactive power.

[0024] Optionally, after the acquisition module receives the command sent from the external command terminal, the method further comprises: the processing module analyzes and extracts the fields contained in the command, wherein the fields comprise a target charging pile identifier field and a target reactive power value field; and the processing module converts the fields into corresponding data types to obtain a target charging pile corresponding to the target charging pile identifier field and a target reactive power value corresponding to the target reactive power value field.

[0025] Optionally, the processing module sends the power factor to the working module, so that the working module generates a corresponding reactive power according to the power factor, specifically including: the processing module adjusts the phase difference between the current and the voltage through the working module, so that the power factor corresponding to the phase difference is the target power factor.

[0026] Optionally, the processing module calculates the reactive power threshold supported by the charging pile according to the active power value, and the specific calculation formula is as follows:

[0027] ;

[0028] Wherein, Q is the reactive power threshold, P max is the active power value, is the power factor range.

[0029] Optionally, the processing module calculates the power factor corresponding to the working module, and the specific calculation formula is as follows:

[0030] ;

[0031] wherein cosφ is the power factor, P dc is the DC power of the working module, Q s is the target reactive power, and β is the efficiency conversion factor.

[0032] Optionally, after the processing module determines the size relationship between the target reactive power value and the reactive power threshold value, the method further comprises: if the target reactive power value is greater than the reactive power threshold value, displaying an error message or adjusting the target reactive power value to the reactive power threshold value.

[0033] Optionally, before calculating the reactive power threshold value supported by the charging pile according to the active power value, the method further comprises: an acquisition module acquires the input power and the output power of the working module of the charging pile; and a processing module obtains the efficiency of the charging pile according to the input power and the output power and takes the efficiency as the efficiency conversion factor.

[0034] In a third aspect of the present application, an electronic device is provided, which includes a processor, a memory, a user interface and a network interface. The memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory to enable the electronic device to perform the method of any one of the above aspects.

[0035] In a fourth aspect of the present application, a computer readable storage medium is provided, which stores computer instructions. When the instructions are executed, the method steps shown above are performed.

[0036] In summary, the one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0037] 1. By receiving external commands and parsing the command type, the control of the reactive power of the charging pile is realized. According to the indication in the command, the charging pile can generate or absorb reactive power automatically to adapt to the demand of the power grid. When the target reactive power value is less than the reactive power threshold value, the method calculates the power factor corresponding to the working module. By sending the calculated power factor to the working module, the charging pile can adjust the generation of its reactive power to optimize the power factor and reduce the interference of harmonics on the power grid. By dynamically adjusting the reactive power, the charging pile can better adapt to the changes of the power grid and improve the stability and reliability of the power grid.

[0038] 2、Allow external command terminal to send commands, realize remote control and management of charging pile, understand and respond to external regulation and control requirements by analyzing commands and extracting fields, convert fields in commands into corresponding data types, ensure accuracy of command parameters, help prevent potential problems caused by incorrect input, improve stability and reliability of charging pile, provide specific and accurate settings for reactive power output through target reactive power value field and target reactive power value.

[0039] 3、By taking appropriate measures when the target reactive power value is greater than the reactive power threshold, the reactive power output can be prevented from exceeding the predetermined range, preventing unnecessary impact on the power system. This helps to protect the charging pile and the power system from potential abnormal or incorrect settings. At the same time, the target reactive power value can be automatically adjusted to the reactive power threshold, ensuring that the reactive power output by the charging pile is within a controllable range. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a flowchart of a reactive power regulation method for a charging pile provided by an embodiment of the present application.

[0041] Figure 2 is a structural diagram of a reactive power regulation device for a charging pile provided by an embodiment of the present application.

[0042] Figure 3 is a structural diagram of an electronic device provided by an embodiment of the present application.

[0043] REFERENCE SIGNS: 201, acquisition module; 202, processing module; 203, sending module; 300, electronic device; 301, processor; 302, communication bus; 303, user interface; 304, network interface; 305, memory. DETAILED DESCRIPTION

[0044] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be described clearly and completely below in conjunction with the drawings in the embodiments of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0045] In the description of the embodiments of the present application, the words "for example" or "for instance" are used to represent an example, illustration or explanation. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of words such as "for example" or "for instance" is intended to present the relevant concept in a specific manner.

[0046] In the description of the embodiments of this application, the term "multiple" means two or more. For example, multiple systems means two or more systems, and multiple screen terminals means two or more screen terminals. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0047] Electric vehicle charging stations typically house multiple charging piles and other electrical equipment, such as lighting, monitoring systems, and communication equipment. The reactive power generated during their operation can cause the following problems: Voltage imbalances may occur in the power grid due to the reactive power generated by these devices. Voltage fluctuations can negatively impact the voltage stability of the power system, especially when charging stations require large amounts of electricity. The presence of reactive power can cause distortion in the current waveform, potentially leading to harmonic components in the current. These harmonics may exceed the grid's specified limits, causing irregular current and voltage waveforms, which can adversely affect the grid and equipment. The reactive power generated by electrical equipment affects the power factor of the power grid. The power factor in a power system is the ratio of active power to apparent power, and a low power factor can reduce grid efficiency, increase the grid load, and affect the transmission and distribution of electrical energy. This application provides a method, device, and electronic equipment for reactive power regulation of charging piles to actively generate reactive power to offset the reactive power generated by other equipment, referencing... Figure 1 , Figure 1 This is a flowchart illustrating a reactive power regulation method for a charging pile according to an embodiment of this application. The method is applied to a charging pile and includes steps S101 to S105, as follows:

[0048] Step S101: Receive a command sent from an external command terminal. The command includes the target charging pile identifier and the corresponding target reactive power value.

[0049] In the above steps, a communication interface is integrated into the charging pile. The DCB mainboard in the charging pile communicates with an external command terminal via the LAN port. The format of the reactive power outgoing command sent from the external command terminal is defined, including the command type, target charging pile identifier, and target reactive power value. The corresponding communication protocol is implemented in the charging pile's control system to ensure that commands from the command terminal can be parsed and the necessary information extracted.

[0050] After step S201, the method further comprises: parsing the command and extracting fields contained in the command, the fields including a target charging pile identifier field and a target reactive power value field; and converting the fields into corresponding data types to obtain a target charging pile corresponding to the target charging pile identifier field and a target reactive power value corresponding to the target reactive power value field.

[0051] Specifically, the charging pile receives an external command and parses the command, the external command being in a text character structure format. In the parsing process, the entire command is parsed into various fields, and a target charging pile identifier field and a target reactive power value field are extracted. The extracted fields are converted into corresponding data types. For the target charging pile identifier, it is converted into a string, and then the target charging pile corresponding to the target charging pile identifier is determined according to the string. For the target reactive power value field, it is converted into a floating-point number. Converting the identifier field into a string can accommodate various identifiers, including numbers, letters, symbols, etc., improving the flexibility of the charging pile identifier. The string as a general data type can adapt to the identifier representation in various situations. The reactive power value is usually a real number value, and the use of a floating-point number can retain the decimal part, improve the accuracy, and better represent the actual power value.

[0052] Step S102: Obtain the active power value output by the working module of the target charging pile.

[0053] In the above steps, the charging pile measures the waveforms of current and voltage through current and voltage sensors connected to the power line. The calculation of active power (P) usually uses the power calculation formula P=VIcos(θ), where V is the voltage, I is the current, and θ is the phase difference between voltage and current. At the same time, the charging pile is equipped with a real-time monitoring system that can obtain and update the active power value in real time. The real-time monitoring system is responsible for controlling the sampling frequency, calculating the power, and providing real-time power information.

[0054] Step S103: Calculate the reactive power threshold supported by the target charging pile according to the active power value.

[0055] In the above steps, the reactive power threshold supported by the charging pile is calculated according to the active power value, and the specific calculation formula is as follows:

[0056] ;

[0057] where Q is the reactive power threshold, P max is the active power value, and α is the power factor range.

[0058] Specifically, the calculated reactive power threshold Q is set as the working threshold of the charging pile. This threshold represents the maximum reactive power supported by the charging pile under the current active power and power factor range. The power factor of the charging pile is the ratio between the active power and the apparent power. The power factor is usually in the range of -1 to 1. A positive number indicates that the active power is dominant, and a negative number indicates that the reactive power is dominant. The active power is the product of current and voltage, representing the actual power generated by the electrical energy. In the context of the present solution, the active power is the actual electric power consumed during the charging process. In the above formula, P max / α takes into account the adjustment of the power factor range to the active power.

[0059] Step S104: Determine the size relationship between the target reactive power value and the reactive power threshold; if the target reactive power value is less than the reactive power threshold, calculate the target power factor corresponding to the working module.

[0060] Before step S104, the method further includes: obtaining the input power and output power of the working module of the charging pile; obtaining the efficiency of the charging pile according to the input power and output power and taking the efficiency as an efficiency conversion factor.

[0061] Specifically, through the current and voltage sensors of the charging pile, real-time data of the input power and output power of the working module are obtained, the current and voltage are measured through the sensors, and the values of the input power and output power of the charging pile are obtained using the power calculation formula. The ratio of the output power to the input power is taken as the efficiency of the charging pile, i.e., the efficiency conversion factor.

[0062] In step S104, the size relationship between the target reactive power value and the reactive power threshold is compared to determine whether the target reactive power value is less than the reactive power threshold. The power factor corresponding to the working module is calculated, and the specific calculation formula is as follows:

[0063] ;

[0064] Wherein, cosφ is the power factor, P dc is the direct current power of the working module, Q s is the target reactive power value, and β is the efficiency conversion factor.

[0065] Specifically, the size relationship between the target reactive power value and the reactive power threshold is compared to determine whether the target reactive power value is less than the reactive power threshold. If the target reactive power value is less than the reactive power threshold, it means that the target reactive power value is less than the maximum reactive power value that the charging pile can generate. At this time, the corresponding power factor when the working module generates a reactive power of the target reactive power value is calculated. The calculation formula of the power factor is shown in step S104, and the numerator part P dc / β represents the direct current power P dcAfter the efficiency conversion factor adjustment, the phase relationship between current and voltage is adjusted according to some actual losses in the power system, so that the calculation is more in line with the actual scene. The denominator part is the total power of the charging pile. The efficiency conversion factor β in the formula is used to consider the efficiency of the working module. This is because in the actual energy conversion process, there is always a certain energy loss, and these losses need to be included in the power factor calculation to more accurately reflect the actual situation.

[0066] After step S104, the method further comprises: if the target reactive power value is greater than the reactive power threshold, displaying error information or adjusting the target reactive power value to the reactive power threshold.

[0067] Specifically, if the target reactive power value is greater than the reactive power threshold, error information is displayed to remind the operator or system administrator. At the same time, the target reactive power value can be adjusted to the reactive power threshold to ensure that the generated reactive power is within the range of the maximum reactive power that the charging pile can generate.

[0068] Step S105: Send the target power factor to the working module so that the working module adjusts according to the target power factor to generate corresponding reactive power.

[0069] In the above steps, the power factor is sent to the working module so that the working module generates corresponding reactive power according to the power factor, specifically including: adjusting the phase difference between current and voltage through the working module, so that the phase difference corresponds to the target power factor.

[0070] Specifically, the target power factor obtained is sent to the working module through a communication protocol. After the working module receives the target power factor, the power factor is adjusted by controlling the phase difference between current and voltage. The adjustment of the phase difference is realized by controlling the frequency and phase difference of current and voltage. To ensure that the actual power factor of the working module is close to the target power factor.

[0071] Reference Figure 2This application also provides a reactive power regulation device for a charging pile, the device comprising: an acquisition module 201, a processing module 202, and a sending module 203; the acquisition module 201 is used to receive a command sent from an external command terminal, the command including a target charging pile identifier and a corresponding target reactive power value; the acquisition module 201 is also used to acquire the active power value output by the working module of the target charging pile; the processing module 202 is used to calculate the reactive power threshold supported by the target charging pile based on the active power value; the processing module 202 is also used to determine the relationship between the target reactive power value and the reactive power threshold; the processing module 202 is also used to calculate the target power factor corresponding to the working module if the target reactive power value is less than the reactive power threshold; the sending module 203 is used to send the target power factor to the working module so that the working module can adjust according to the target power factor to generate the corresponding reactive power.

[0072] In one possible implementation, after the acquisition module 201 receives the command sent from the external command terminal, the method further includes: the processing module 202 parses the command and extracts the fields contained in the command, including the target charging pile identifier field and the target reactive power value field; the processing module 202 converts the fields into the corresponding data types to obtain the target charging pile corresponding to the target charging pile identifier field and the target reactive power value corresponding to the target reactive power value field.

[0073] In one possible implementation, the processing module 202 sends the power factor to the working module so that the working module can generate the corresponding reactive power based on the power factor. Specifically, the processing module 202 adjusts the phase difference between the current and the voltage through the working module so that the power factor corresponding to the phase difference is the target power factor.

[0074] In one possible implementation, the processing module 202 calculates the reactive power threshold supported by the charging pile based on the active power value, and the specific calculation formula is as follows:

[0075] ;

[0076] Where Q is the reactive power threshold, P max This is the active power value. This refers to the power factor range.

[0077] In one possible implementation, the processing module 202 calculates the power factor corresponding to the working module, using the following specific formula:

[0078] ;

[0079] Where cosφ is the power factor, P dc Q represents the DC power of the working module. sThe target reactive power value is for a target reactive power value, and β is an efficiency conversion factor.

[0080] In a possible implementation, after the processing module 202 determines the size relationship between the target reactive power value and the reactive power threshold value, the method further includes: if the target reactive power value is greater than the reactive power threshold value, displaying error information or adjusting the target reactive power value to the reactive power threshold value.

[0081] In a possible implementation, before the reactive power threshold value supported by the charging pile is calculated according to the active power value, the method further includes: the obtaining module 201 obtains the input power and the output power of the working module of the charging pile; and the processing module 202 obtains the efficiency of the charging pile according to the input power and the output power, and takes the efficiency as the efficiency conversion factor.

[0082] It should be noted that: the apparatus provided in the above embodiments is only used as an example for dividing the above functional modules to achieve its functions, and in actual applications, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0083] The present application also provides an electronic device. Referring to Figure 3 , Figure 3 is a structural schematic diagram of an electronic device provided by an embodiment of the present application. The electronic device 300 can include: at least one processor 301, at least one network interface 304, a user interface 303, a memory 305, and at least one communication bus 302.

[0084] The communication bus 302 is used to realize the connection and communication between the components.

[0085] The user interface 303 can include a display screen (Display) and a camera (Camera), and the optional user interface 303 can further include a standard wired interface and a wireless interface.

[0086] The network interface 304 can optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

[0087] The processor 301 can include one or more processing cores. The processor 301 connects various parts within the server through various interfaces and lines, performs various functions of the server and processes data by running or executing instructions, programs, code sets or instruction sets stored in the memory 305, and calling data stored in the memory 305. Alternatively, the processor 301 can be implemented in at least one of a hardware form of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 301 can integrate a combination of one or more of a central processing unit (CPU), a graphics processing unit (GPU), and a modem. Among them, the CPU mainly processes operating systems, user interfaces, and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; and the modem is used for processing wireless communication. It can be understood that the above-mentioned modem can also not be integrated into the processor 301, but can be realized by a separate chip.

[0088] The memory 305 can include a random access memory (RAM) and a read-only memory (ROM). Optionally, the memory 305 includes a non-transitory computer-readable storage medium. The memory 305 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 305 can include a program storage area and a data storage area, wherein the program storage area can store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the above-mentioned various method embodiments, etc.; the data storage area can store data involved in the above-mentioned various method embodiments, etc. The memory 305 can also be at least one storage device located away from the aforementioned processor 301. Referring to Figure 3 The memory 305 as a computer storage medium can include an operating system, a network communication module, a user interface module, and an application program of the reactive power regulation method of the charging pile.

[0089] In Figure 3In the electronic device 300 shown, the user interface 303 is mainly used to provide an interface for the user to input, and obtain data input by the user; and the processor 301 can be used to invoke an application program stored in the memory 305 and storing a reactive power regulation method of a charging pile, which, when executed by one or more processors 301, causes the electronic device 300 to perform the method of one or more of the above-described embodiments. It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all described as a combination of a series of actions, but those skilled in the art should know that the present application is not limited to the order of the actions described, because according to the present application, certain steps can be performed in other order or at the same time. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0090] The present application also provides a computer-readable storage medium storing instructions that, when executed by one or more processors 301, cause the electronic device 300 to perform the method of one or more of the above-described embodiments.

[0091] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0092] In the several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other manners. For example, the division of the units is merely a logical function division, and there can be another division manner in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, can be indirect couplings or communication connections through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0093] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. In actual implementation, some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0094] In addition, each functional unit in the embodiments of the present application can be integrated in one processing unit, or each unit can exist physically as a separate unit, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware, or in the form of a software functional unit.

[0095] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable memory. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a memory and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned memory includes: a U disk, a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0096] The above are only exemplary embodiments of the present disclosure, and cannot limit the scope of the present disclosure. That is, any equivalent changes and modifications made in accordance with the teachings of the present disclosure are still within the scope of the present disclosure. Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the specification and practicing the true principles of the present disclosure.

[0097] The present application is intended to cover any variations, uses or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not described in the present disclosure. The specification and examples are only considered as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for reactive power regulation of a charging pile, characterized in that, The method includes: Receive commands sent from an external command terminal, the commands including a target charging pile identifier and a corresponding target reactive power value; Obtain the active power value output by the working module of the target charging pile; The reactive power threshold supported by the target charging pile is calculated based on the active power value. Determine the relationship between the target reactive power value and the reactive power threshold. If the target reactive power value is less than the reactive power threshold, then the target power factor corresponding to the working module is calculated; The target power factor is sent to the working module so that the working module can adjust according to the target power factor to generate the corresponding reactive power; The step of sending the target power factor to the working module so that the working module can adjust according to the target power factor to generate the corresponding reactive power includes: The phase difference between the current and voltage is adjusted by the working module so that the power factor corresponding to the phase difference is the target power factor; The reactive power threshold supported by the target charging pile is calculated based on the active power value, and the specific calculation formula is as follows: ； Where Q is the reactive power threshold, P max This is the active power value. The power factor range; The specific formula for calculating the target power factor corresponding to the working module is as follows: ； Where cosφ is the power factor, P dc Q is the DC power of the working module. s β represents the target reactive power value, and β is the efficiency conversion factor.

2. The method according to claim 1, characterized in that, After receiving the command sent from the external command terminal, the method further includes: The command is parsed and the fields contained in the command are extracted. The fields include the target charging pile identifier field and the target reactive power value field. The fields are converted into their corresponding data types to obtain the target charging pile corresponding to the target charging pile identifier field and the target reactive power value corresponding to the target reactive power value field.

3. The method according to claim 1, characterized in that, After determining the relationship between the target reactive power value and the reactive power threshold, the method further includes: If the target reactive power value is greater than the reactive power threshold, an error message is displayed or the target reactive power value is adjusted to the reactive power threshold.

4. The method according to claim 1, characterized in that, Before calculating the reactive power threshold supported by the charging pile based on the active power value, the method further includes: Obtain the input power and output power of the charging pile's working module; The efficiency of the charging pile is obtained based on the input power and the output power, and the efficiency is used as the efficiency conversion factor.

5. A reactive power regulation device for a charging pile, characterized in that, The apparatus is used to perform the method as described in any one of claims 1-4, the apparatus comprising: an acquisition module (201), a processing module (202), and a sending module (203); The acquisition module (201) is used to receive a command sent from an external command terminal, the command including a target charging pile identifier and the corresponding target reactive power value; The acquisition module (201) is also used to acquire the active power value output by the working module of the target charging pile; The processing module (202) is used to calculate the reactive power threshold supported by the target charging pile based on the active power value; The processing module (202) is also used to determine the relationship between the target reactive power value and the reactive power threshold. The processing module (202) is further configured to calculate the target power factor corresponding to the working module if the target reactive power value is less than the reactive power threshold. The sending module (203) is used to send the target power factor to the working module so that the working module can adjust according to the target power factor to generate the corresponding reactive power.

6. An electronic device, characterized in that, The device includes a processor (301), a memory (305), a user interface (303), and a network interface (304). The memory (305) is used to store instructions. The user interface (303) and the network interface (304) are used to communicate with other devices. The processor (301) is used to execute the instructions stored in the memory (305) to cause the electronic device (300) to perform the method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed, perform the method as described in any one of claims 1-4.

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