CN111443248A - Inverter performance index test data extraction system and method - Google Patents
Inverter performance index test data extraction system and method Download PDFInfo
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- CN111443248A CN111443248A CN202010124786.3A CN202010124786A CN111443248A CN 111443248 A CN111443248 A CN 111443248A CN 202010124786 A CN202010124786 A CN 202010124786A CN 111443248 A CN111443248 A CN 111443248A
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Abstract
The invention is suitable for the technical field of inverter test, and provides an inverter performance index test data extraction system and a method, wherein the system comprises an inverter to be tested, a power analyzer, terminal equipment and a direct-current programming power supply; the terminal equipment is used for controlling the direct-current programming power supply to provide direct-current voltage for the inverter to be tested, and the power analyzer is used for collecting electric parameters of the inverter to be tested and sending the electric parameters to the terminal equipment; the terminal equipment is further used for carrying out classification analysis processing on the electrical parameters, generating classification analysis data and a test conclusion, and generating a performance index test report according to the classification analysis data and the test conclusion. According to the method and the device, the power analyzer and the direct-current programming power supply are controlled through the terminal equipment, the electric parameters of the inverter are obtained, the electric parameters are analyzed and processed, and a performance index test report of the inverter is obtained, so that the automatic test of the inverter is realized, and the performance index test efficiency of the inverter is improved.
Description
Technical Field
The invention belongs to the technical field of inverter testing, and particularly relates to an inverter performance index test data extraction system and method.
Background
An inverter is a power conditioning apparatus composed of semiconductor devices, mainly used for converting dc power into ac power, and generally includes a boost circuit and an inverter bridge circuit. The boosting circuit boosts the direct-current voltage of the solar battery to the direct-current voltage required by the output control of the inverter; the inverter bridge circuit equivalently converts the boosted direct-current voltage into alternating-current voltage with common frequency. With the access of a large amount of renewable energy power generation equipment, the technical index requirements of power grids of various countries on the equipment accessed to the power grid are more and more strict, including grid-connected current harmonic waves, injected power grid direct current components, power grid over-voltage and under-voltage protection, power grid over-frequency and under-frequency protection, island protection and the like.
At present, a method for testing and analyzing the conventional performance indexes of the inverter is generally realized by using a power tester manually, a large amount of manpower is consumed by the method, and the efficiency of testing the performance indexes of the inverter is low.
Disclosure of Invention
In view of this, embodiments of the present invention provide a system and a method for extracting inverter performance index test data, so as to solve the problem of low efficiency of inverter performance index test in the prior art.
A first aspect of an embodiment of the present invention provides an inverter performance index test data extraction system, including:
the system comprises an inverter to be tested, a power analyzer, terminal equipment and a direct-current programming power supply;
the inverter to be tested is respectively connected with the power analyzer, the terminal equipment and the direct-current programming power supply; the terminal equipment is also connected with the power analyzer and the direct-current programming power supply;
the terminal equipment is used for controlling the direct-current programming power supply to provide direct-current voltage for the inverter to be tested, and the power analyzer is used for collecting electric parameters of the inverter to be tested and sending the electric parameters to the terminal equipment;
the terminal equipment is further used for carrying out classification analysis processing on the electrical parameters, generating classification analysis data and a test conclusion, and generating a performance index test report according to the classification analysis data and the test conclusion.
A second aspect of the embodiments of the present invention provides an inverter performance index test data extraction method, which is applied to the terminal device described above, and the method includes:
s1: sending a first voltage output instruction to a direct current programming power supply, wherein the first voltage output instruction is used for indicating the direct current programming power supply to output a first direct current voltage to an inverter to be tested, and the first voltage output instruction is any voltage output instruction in a preset voltage instruction set;
s2: sending a first power output instruction to the inverter to be tested, wherein the first power output instruction is used for indicating the inverter to be tested to output a first output power; the first power output instruction is any power output instruction in a preset power instruction set;
s3: controlling a power analyzer to acquire electrical parameters of the inverter to be tested, and acquiring the electrical parameters of the inverter to be tested, acquired by the power analyzer, under the first direct-current voltage and the first output power;
s4: analyzing and processing each electrical parameter to obtain classified analysis data;
s5: generating a test conclusion according to the classified analysis data;
s6: and inputting the classified analysis data and the test conclusion into a preset general template to generate a performance index test report of the inverter to be tested.
The inverter performance index test data extraction system provided by the embodiment of the invention comprises: the system comprises an inverter to be tested, a power analyzer, terminal equipment and a direct-current programming power supply; the terminal equipment is used for controlling the direct-current programming power supply to provide direct-current voltage for the inverter to be tested, and the power analyzer is used for collecting electric parameters of the inverter to be tested and sending the electric parameters to the terminal equipment; the terminal equipment is further used for carrying out classification analysis processing on the electrical parameters, generating classification analysis data and a test conclusion, and generating a performance index test report according to the classification analysis data and the test conclusion. In the embodiment, the power analyzer and the direct-current programming power supply are controlled through the terminal device to obtain the electric parameters of the inverter, and the electric parameters are analyzed and processed to obtain the performance index test report of the inverter, so that the automatic test of the inverter is realized, and the performance index test efficiency of the inverter is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an inverter performance index test data extraction system provided in an embodiment of the present invention;
fig. 2 is a schematic flowchart of a method for extracting test data of inverter performance indexes according to an embodiment of the present invention;
fig. 3 is a schematic flowchart of a method for extracting test data of inverter performance indexes according to an embodiment of the present invention;
fig. 4 is another schematic flow chart of a method for extracting test data of inverter performance indexes according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from 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 invention with unnecessary detail.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Example 1:
fig. 1 shows a schematic structural diagram of an inverter performance index test data extraction system 100 according to an embodiment of the present invention, which includes:
the inverter to be tested 140, the power analyzer 120, the terminal device 110 and the direct current programming power supply 130;
the inverter to be tested 140 is respectively connected to the power analyzer 120, the terminal device 110 and the dc programming power supply 130; the terminal device 110 is further connected to the power analyzer 120 and the dc programming power supply 130;
the terminal device 110 is configured to control the dc programming power supply 130 to provide a dc voltage to the inverter 140 to be tested, and the power analyzer 120 is configured to collect an electrical parameter of the inverter 140 to be tested and send the electrical parameter to the terminal device 110;
the terminal device 110 is further configured to perform classification analysis processing on the electrical parameters, generate classification analysis data and a test conclusion, and generate a performance index test report according to the classification analysis data and the test conclusion.
In this embodiment, the electrical parameter may comprise at least one of a voltage, a current, a power and a phase of the inverter.
In one embodiment, the system further comprises: a communication device; the terminal device 110 is connected to the power analyzer 120 and the dc programming power supply 130 through communication means.
In one embodiment, the communication device comprises a switch.
In one embodiment, the terminal device 110 is connected to the inverter under test 140 through an RS485 bus.
In this embodiment, the terminal device 110 is connected to the inverter 140 to be tested through the RS485 bus, the switch is connected to the power analyzer 120 and the dc programming power source 130 through the TCP/IP, so that the IP addresses of all the access devices are in the same network segment, the VBA algorithm is used to control the dc programming power source 130 to output the dc voltage, the inverter 140 to be tested is controlled to output the output power, the power analyzer 120 is controlled to collect the electrical parameters, the terminal device 110 extracts the electrical parameters to the EXCE L, sorts and classifies the electrical parameters to obtain the classified analysis data, the classified analysis data includes the conversion efficiency curve of the inverter to be tested, then the test conclusion is automatically generated according to the classified analysis data, the test conclusion is a comprehensive description of the performance of the inverter to be tested, and finally the WORD test report is automatically generated according to the classified analysis data and the test conclusion.
In an embodiment of the present invention, as shown in fig. 2, fig. 2 is a schematic flowchart illustrating a method for extracting inverter performance index test data provided in this embodiment, and for convenience of description, only a part related to this embodiment is shown, which includes:
s1: sending a first voltage output instruction to the dc programming power supply 130, where the first voltage output instruction is used to instruct the dc programming power supply 130 to output a first dc voltage to the inverter 140 to be tested, and the first voltage output instruction is any voltage output instruction in a preset voltage instruction set;
s2: sending a first power output instruction to the inverter to be tested 140, where the first power output instruction is used to instruct the inverter to be tested 140 to output a first output power; the first power output instruction is any power output instruction in a preset power instruction set;
s3: controlling a power analyzer 120 to acquire electrical parameters of the inverter to be tested 140, and acquiring the electrical parameters of the inverter to be tested 140 acquired by the power analyzer 120 under the first direct-current voltage and the first output power;
s4: analyzing and processing each electrical parameter to obtain classified analysis data;
s5: generating a test conclusion according to the classified analysis data;
s6: and inputting the classification analysis data and the test conclusion into a preset general template to generate a performance index test report of the inverter 140 to be tested.
In an embodiment, after S3, fig. 3 shows a flow of still another implementation of the inverter performance index test data extraction method provided by the embodiment of the present invention, which includes:
s301: judging whether the sending of all voltage output instructions in the preset voltage instruction set is finished or not;
s302: if the sending of all the voltage output commands in the preset voltage command set is not finished, taking the second voltage output command as the updated first voltage output command, and executing the steps S1 to S3 again; the second voltage output instruction is any voltage output instruction except the first voltage output instruction in the preset voltage instruction set;
s303: if the sending of all the voltage output commands in the preset voltage command set is completed, the step S4 is executed.
In an embodiment, after S3, fig. 4 shows a flow of still another implementation of the inverter performance index test data extraction method provided by the embodiment of the present invention, which includes:
s401: judging whether the sending of all power output instructions in the preset power instruction set is finished or not;
s402: if the sending of all the power output commands in the preset power command set is not completed, taking the second power output command as the updated first power output command, and executing the steps S1 to S3 again; the second power output instruction is any power output instruction except the first power output instruction in the preset power instruction set;
s403: if the sending of all the power output commands in the preset power command set is completed, the step S4 is executed.
In this embodiment, a preset power instruction set and a preset voltage instruction set are pre-stored in the terminal device 110, and the preset power instruction set and the preset voltage instruction set may be instruction sets that are solidified in the terminal device 110 in advance, or instruction sets that are generated after a user changes at any time according to actual conditions. The preset power instruction set comprises a plurality of power output instructions, and the preset voltage instruction set comprises a plurality of voltage output instructions.
When the terminal device 110 obtains a test start instruction of a user, a voltage output instruction is selected from a preset voltage instruction set to the dc programming power supply 130, a power output instruction is selected from a preset power instruction set, and the power output instruction is sent to the inverter 140 to be tested, and the power tester collects electrical parameters of the inverter 140 to be tested under the control action of the first output power and the first dc voltage and sends the electrical parameters to the terminal device 110.
After the terminal device 110 obtains the electrical parameters of the inverter to be tested 140 under the control of the first output power and the first direct-current voltage, the electrical parameters are stored in the storage folder created in the current test.
Meanwhile, after the terminal device 110 obtains the electrical parameters under the control action of the first output power and the first direct-current voltage, it determines whether all the instructions in the preset power instruction set are sent out, and determines whether all the voltage output instructions in the preset voltage instruction set are sent out.
Specifically, the method for sequentially outputting the commands in the preset voltage command set may include two methods:
the first method comprises the following steps: after the terminal device 110 sends the first voltage output instruction to the dc programming power supply 130, the terminal device 110 marks the first voltage output instruction as issued, after the terminal device 110 obtains the electrical parameter under the action of the first voltage output instruction, it is determined whether the preset voltage instruction set includes an instruction that is not marked as "issued", if so, any one of the voltage output instructions that are not marked as "issued" is selected and issued, and if not, the control of the dc programming power supply 130 is stopped. And clears the flag for the command in the preset voltage command set after each cessation of control of the dc programming power supply 130.
And the second method comprises the following steps: the terminal device 110 sorts the voltage output commands in the preset voltage command set according to the corresponding voltage values, and preferably, the voltage output commands may be sorted in the order of the voltage values from small to large. And then acquiring the total number a of the instructions in the preset voltage instruction set, sequentially outputting voltage output instructions, subtracting 1 from the total number of the instructions after sending one voltage output instruction, and updating the total number a of the instructions. After each time the electrical parameter of a certain voltage output instruction is acquired, it is determined whether a is greater than 0, if a is greater than 0, the last a voltage output instruction in the preset instruction set is acquired and issued, and if a is equal to 0, the control of the dc programming power supply 130 is stopped.
In the present embodiment, the method of sequentially outputting power in the preset power command set is the same as the method of sequentially outputting voltage output commands in the preset voltage command set.
In an embodiment, before S1, the method for extracting inverter performance index test data according to the embodiment of the present invention further includes:
creating a storage folder according to a preset folder path, and acquiring a first storage path of the storage folder;
after S3, the method for extracting the inverter performance index test data according to the embodiment of the present invention further includes:
generating a first test data file according to the electrical parameters of the inverter 140 to be tested under the first direct-current voltage and the first output power, wherein the first test data file is a test data file corresponding to the first direct-current voltage and the first output power;
naming the first test data file according to the first direct-current voltage and the first output power, and storing the first test data file into the storage folder according to the first storage path.
In this embodiment, each time the terminal device 110 obtains a test start instruction of a user, a storage folder corresponding to the current test is created according to a preset folder path, where the storage folder may be named by creation time, or by the total number of tests plus the creation time.
In this embodiment, the first test data file is a test data file corresponding to the electrical parameter of the inverter under the action of the first dc voltage and the first output power. The first test data file may be named as a first dc voltage and a first output power, and a plurality of test data files corresponding to the dc voltage and the first output power are stored in the storage folder each time a complete test is performed.
In one embodiment, the specific implementation flow of S4 in fig. 2 includes:
extracting the electrical parameters of all the test data files in the storage folder to corresponding positions in an Execl table according to the electrical parameter types and the names of the test data files;
analyzing and processing the data of each position in the Execl table respectively according to the analysis calculation rule of each position in the Execl table to obtain classified analysis data;
the classification analysis data includes at least one of a conversion efficiency curve, a current harmonic value, a conversion efficiency, and a direct current component.
In this embodiment, the electrical parameter may include one or more of current, voltage, power, phase, and displacement factor. And extracting the electric parameters in all the test data files to the positions corresponding to the Execl tables according to the data types and the names of the test data files, specifically, setting a label at the position corresponding to each Execl table, and determining the positions of the electric parameters in the Execl tables according to the labels, the data types of the electric parameters and the test data files.
For example, data in a plurality of test data files with data types of current are all extracted into a table area storing current data in an Execl table, and the table area corresponding to the current data stores the current data corresponding to each dc voltage-output power. Further, the data type can be used as the abscissa of the table, and the dc voltage-output power can be used as the ordinate, so that the current data can be filled into the corresponding table. According to the principle, the electrical parameters are classified.
After the classification processing is carried out on the electrical parameters, the electrical parameters are analyzed and processed according to the calculation rules of different positions in the table, and classification analysis data are obtained.
For example, the conversion efficiency of the inverter 140 to be tested under a certain dc voltage-output power is calculated according to the output power and the conversion efficiency under the dc voltage-output power and the corresponding calculation rule, and then the efficiency curve of the inverter is drawn according to the conversion efficiency under different dc voltage-output powers, and the efficiency curve is stored to the corresponding position in the Execl table.
In one embodiment, the specific implementation flow of S5 in fig. 2 includes: and inputting the classified analysis data into a preset neural network model to generate a test conclusion.
In this embodiment, before the test, the preset neural network model may be trained through training samples, where each training sample includes classification analysis data and a corresponding actual test conclusion.
In this embodiment, the test conclusion corresponding to the classification analysis data may also be determined by pre-storing the data-conclusion mapping table in the terminal device 110 and by looking up the table.
In this embodiment, when the classification analysis data and the test conclusion are obtained, the classification analysis data and the test conclusion are inserted into a preset general template generated in advance, so as to generate a performance index test report of the inverter to be tested 140 of the current test.
In the embodiment, the power analyzer 120 and the inverter to be tested 140 are directly controlled by the VBA algorithm, and the test data file is stored, so that the trouble of manually operating each device is saved; in addition, the direct-current programming source and the inverter to be tested 140 can be controlled to output direct-current voltage and output power simultaneously, the setting parameters are adjusted automatically in the whole process, data collected by the power analyzer 120 are extracted and processed, and a test report is generated automatically, so that the test efficiency is greatly improved, more abundant test time is provided for reliability test, the problem probability appearing in the market is reduced, the complicated manual operation data processing process is omitted, and the research and development period is shortened.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Fig. 5 is a schematic diagram of the terminal device 110 according to an embodiment of the present invention. As shown in fig. 5, the terminal device 110 of this embodiment includes: a processor 50, a memory 51 and a computer program 52 stored in said memory 51 and executable on said processor 50. The processor 50, when executing the computer program 52, implements the steps in the above-described embodiments of the reactive power closed-loop control method for the single-phase grid-connected inverter, such as S1 to S6 shown in fig. 2.
The computer program 52 may be divided into one or more modules/units, which are stored in the memory 51 and executed by the processor 50 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 52 in the terminal device 110.
The terminal device 110 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal device may include, but is not limited to, a processor 50, a memory 51. Those skilled in the art will appreciate that fig. 5 is merely an example of terminal device 110 and is not intended to limit terminal device 110 and may include more or fewer components than shown, or some components may be combined, or different components, e.g., the terminal device may also include input output devices, network access devices, buses, etc.
The Processor 50 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any processor or the like.
The storage 51 may be an internal storage unit of the terminal device 110, such as a hard disk or a memory of the terminal device 110. The memory 51 may also be an external storage device of the terminal device 110, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 110. Further, the memory 51 may also include both an internal storage unit and an external storage device of the terminal device 110. The memory 51 is used for storing the computer program and other programs and data required by the terminal device. The memory 51 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. . Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. An inverter performance index test data extraction system, comprising: the system comprises an inverter to be tested, a power analyzer, terminal equipment and a direct-current programming power supply;
the inverter to be tested is respectively connected with the power analyzer, the terminal equipment and the direct-current programming power supply; the terminal equipment is also connected with the power analyzer and the direct-current programming power supply;
the terminal equipment is used for controlling the direct-current programming power supply to provide direct-current voltage for the inverter to be tested, and the power analyzer is used for collecting electric parameters of the inverter to be tested and sending the electric parameters to the terminal equipment;
the terminal equipment is further used for carrying out classification analysis processing on the electrical parameters, generating classification analysis data and a test conclusion, and generating a performance index test report according to the classification analysis data and the test conclusion.
2. The inverter performance parameter index test data extraction system of claim 1, the system further comprising: a communication device; and the terminal equipment is respectively connected with the power analyzer and the direct-current programming power supply through the communication device.
3. The inverter performance parameter index test data extraction system of claim 2, wherein the communication device comprises a switch.
4. The system for extracting performance parameter index test data of the inverter according to claim 1, wherein the terminal device is connected to the inverter to be tested through an RS485 bus.
5. An inverter performance index test data extraction method applied to the terminal device according to any one of claims 1 to 4, the method comprising:
s1: sending a first voltage output instruction to a direct current programming power supply, wherein the first voltage output instruction is used for indicating the direct current programming power supply to output a first direct current voltage to an inverter to be tested, and the first voltage output instruction is any voltage output instruction in a preset voltage instruction set;
s2: sending a first power output instruction to the inverter to be tested, wherein the first power output instruction is used for indicating the inverter to be tested to output a first output power; the first power output instruction is any power output instruction in a preset power instruction set;
s3: controlling a power analyzer to acquire electrical parameters of the inverter to be tested, and acquiring the electrical parameters of the inverter to be tested, acquired by the power analyzer, under the first direct-current voltage and the first output power;
s4: analyzing and processing each electrical parameter to obtain classified analysis data;
s5: generating a test conclusion according to the classified analysis data;
s6: and inputting the classified analysis data and the test conclusion into a preset general template to generate a performance index test report of the inverter to be tested.
6. The inverter performance index test data extraction method of claim 5, wherein after the S3, the method further comprises:
judging whether the sending of all voltage output instructions in the preset voltage instruction set is finished or not;
if the sending of all the voltage output commands in the preset voltage command set is not finished, taking the second voltage output command as the updated first voltage output command, and executing the steps S1 to S3 again; the second voltage output instruction is any voltage output instruction except the first voltage output instruction in the preset voltage instruction set;
if the sending of all the voltage output commands in the preset voltage command set is completed, the step S4 is executed.
7. The inverter performance index test data extraction method of claim 5, wherein after the S3, the method further comprises:
judging whether the sending of all power output instructions in the preset power instruction set is finished or not;
if the sending of all the power output commands in the preset power command set is not completed, taking the second power output command as the updated first power output command, and executing the steps S1 to S3 again; the second power output instruction is any power output instruction except the first power output instruction in the preset power instruction set;
if the sending of all the power output commands in the preset power command set is completed, the step S4 is executed.
8. The inverter performance index test data extraction method of claim 5, wherein prior to the S1, the method further comprises:
creating a storage folder according to a preset folder path, and acquiring a first storage path of the storage folder;
after the S3, the method further includes:
generating a first test data file according to the electrical parameters of the inverter to be tested under the first direct current voltage and the first output power, wherein the first test data file is a test data file corresponding to the first direct current voltage and the first output power;
naming the first test data file according to the first direct-current voltage and the first output power, and storing the first test data file into the storage folder according to the first storage path.
9. The method for extracting inverter performance index test data according to claim 8, wherein the S4 includes:
extracting the electrical parameters of all the test data files in the storage folder to corresponding positions in an Execl table according to the electrical parameter types and the names of the test data files;
analyzing and processing the data of each position in the Execl table respectively according to the analysis calculation rule of each position in the Execl table to obtain classified analysis data;
the classification analysis data includes at least one of a conversion efficiency curve, a current harmonic value, a conversion efficiency, and a direct current component.
10. The inverter performance index test data extraction method according to claim 5, wherein the S5 includes:
and inputting the classified analysis data into a preset neural network model to generate a test conclusion.
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| CN202010124786.3A CN111443248A (en) | 2020-02-27 | 2020-02-27 | Inverter performance index test data extraction system and method |
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Application publication date: 20200724 |