Automatic test system and method for authentication standard of energy storage converter

Abstract

The invention provides an automatic test system for an authentication standard of an energy storage converter. The automatic test system comprises a hardware test platform, a central control and processing unit, a standard test case database, an automatic test engine and an intelligent analysis and report generation module. Battery and power grid working conditions are simulated through a hardware test platform, and data are collected; the central control and processing unit is used as core scheduling; storing a structured test case through a standard test case database; the use case is analyzed through an automatic test engine, a hardware platform is driven to execute a full-automatic serialization test, and test conditions can be self-adaptively and finely adjusted in the process; an intelligent analysis and report generation module is used for automatically comparing measured data with expected criteria, and a detailed test report is generated through one key; therefore, full-process automation, standardization and intellectualization of energy storage converter authentication testing are achieved, the testing efficiency, accuracy and consistency are greatly improved, and the problems that traditional manual testing is low in efficiency, errors are prone to occurring, and strict benchmarking is difficult are solved.

Description

Technical Field

[0001] This invention relates to the field of power electronics testing technology, and more particularly to an automatic testing system and method for energy storage converter certification standards. Background Technology

[0002] As a core component of energy storage systems, energy storage converters must meet a series of stringent certification standards in terms of performance, safety, and grid connection characteristics. These standards include Chinese national standards (GB / T 34120, GB / T 34133), US UL1547, and EU EN 50549. These standards cover multiple aspects such as electrical performance, safety protection, grid adaptability, and electromagnetic compatibility.

[0003] The current certification testing process for energy storage converters is essentially a highly manual, serial operation. The entire process begins with engineers manually studying standard documents and setting all test equipment parameters (such as voltage and frequency waveforms in a grid simulator, and power curves of a DC source). They then execute each test step by step, manually recording key data and judging in real time whether the device under test's response meets requirements. After testing, engineers must manually summarize and organize all test data, manually plot various waveforms and characteristic curves, and finally write test reports item by item.

[0004] This certification testing technology heavily relies on manual operation and interpretation, resulting in low overall efficiency and difficulty in ensuring consistent results. Test engineers must manually configure numerous devices, perform repetitive steps, and record massive amounts of data, making the testing cycle lengthy and labor costs high. More importantly, manual operation inevitably introduces procedural biases and subjective judgment errors, leading to poor comparability of test results from different personnel and at different times, thus weakening the authority and repeatability of certification conclusions.

[0005] Furthermore, existing methods have inherent limitations in terms of test coverage completeness and data value extraction. Faced with complex and rigorous technical standards, manual testing struggles to systematically cover all critical conditions and edge cases, posing a risk of omissions. A large amount of data generated during testing is merely used to generate static reports; the entire process is cumbersome and error-prone, while the potential product performance trends and deep insights behind the data are completely wasted. This renders the testing phase only capable of "pass / fail determination," failing to provide effective feedback for product iteration and reliability improvement.

[0006] Therefore, a new solution is needed. Summary of the Invention

[0007] This invention provides an automated testing system and method for energy storage converter certification standards.

[0008] According to one aspect of the present invention, an automatic testing system for energy storage converter certification standards is provided, comprising: The hardware testing platform includes a programmable DC power supply for simulating batteries, a power grid simulator for simulating power grids, a data acquisition unit for collecting test data, and an interface cabinet for connecting the energy storage converter under test. The central control and processing unit is communicatively connected to the hardware testing platform and is used to control the programmable DC power supply, the power grid simulator and the data acquisition unit of the hardware testing platform to work together. The standard test case database stores multiple standardized test cases generated based on the structured decomposition of at least one target certification standard; wherein each of the standardized test cases includes at least a test item identifier, test purpose, preconditions, stimulus signal parameters, test step sequence, expected result criteria, and data collection requirements; An automated testing engine is connected to the standard test case database and the central control and processing unit, respectively. It is used to parse and execute standardized test cases selected from the standard test case database, automatically generate control command sequences based on the test step sequence and excitation signal parameters of the selected standardized test cases, and send them to the central control and processing unit to control the hardware testing platform to execute multiple test items, monitor the test status in real time, and automatically trigger the data acquisition unit to record test data. The intelligent analysis and report generation module is connected to the automated testing engine and the data acquisition unit. It is used to automatically compare and analyze the measured data recorded by the data acquisition unit with the expected result criteria in the corresponding standardized test cases, and automatically generate a detailed test report containing test data, analysis and comparison results and test conclusions according to the preset report template.

[0009] In the automatic testing system for energy storage converter certification standards provided by this invention, the programmable DC power supply is used to provide adjustable DC voltage and current according to the excitation signal parameters of the test case; the power grid simulator is used to simulate the voltage, frequency, waveform distortion and fault conditions of the power grid according to the excitation signal parameters of the test case.

[0010] In the automatic testing system for energy storage converter certification standards provided by this invention, the test items include one or more of the following: basic performance test, protection function test, and power quality test.

[0011] In the automatic testing system for energy storage converter certification standards provided by this invention, the automated testing engine is also used to monitor the output conditions of the hardware testing platform in real time during the test execution process, and when it detects that the output conditions deviate from the preset requirements of the currently executed standardized test cases, it automatically generates adjustment instructions and fine-tunes the parameters of the hardware testing platform through the central control and processing unit so that the test conditions meet the standard requirements.

[0012] In the automatic testing system for energy storage converter certification standards provided by this invention, the automatic comparison analysis performed by the intelligent analysis and report generation module includes: extracting feature data corresponding to the expected result criteria from the measured data, comparing the feature data with the criterion threshold or range, and automatically determining whether a single test result is passed or failed.

[0013] According to another aspect of the present invention, an automatic testing method for energy storage converter certification standards based on the system described above is also provided, comprising the following steps: Step S1: Connect the energy storage converter under test to the interface cabinet and receive the user's input instruction for selecting the certification standard or test item; Step S2: According to the selection instruction, load one or more corresponding standardized test cases from the standard test case database, and parse them by the automated test engine; Step S3: Automatically generate a control command sequence based on the test step sequence and excitation signal parameters of the selected standardized test cases and send it to the central control and processing unit to control the hardware test platform to execute multiple test items; for each test item, automatically configure the parameters of the programmable DC power supply and the power grid simulator to apply excitation, control the operation of the tested energy storage converter, and simultaneously start the data acquisition unit to record data; Step S4: After a single test or a series of tests is completed, the feature data in the actual test data is automatically extracted and compared with the expected result criteria in the corresponding standardized test cases to automatically determine the pass status of each test item. Step S5: Based on the measured data of all test items, the analysis and comparison results and the judgment conclusions, automatically generate a complete certification test report according to the preset template.

[0014] The testing method provided by the present invention further includes: real-time monitoring of the output conditions of the hardware testing platform, and when the output conditions are detected to deviate from the preset requirements of the currently executed standardized test cases, automatically generating adjustment instructions and fine-tuning the parameters of the hardware testing platform through the central control and processing unit so that the test conditions meet the standard requirements.

[0015] In the testing method provided by this invention, the test items include one or more of the following: basic performance test, protection function test, and power quality test.

[0016] In the testing method provided by this invention, in step S5, if all test items are determined to pass, the report generation module automatically summarizes the test data, generates test conclusions, and attaches the original data to form an certification test report; if any test item is determined to fail, the report generation module records the detailed information of the failed item.

[0017] In the testing method provided by the present invention, in step S4, feature data corresponding to the expected result criteria are extracted from the actual test data, and the feature data is compared with the criterion threshold or range to determine whether a single test result is passed or failed.

[0018] The automated testing system method for energy storage converter certification standards of the present invention has the following beneficial effects: In this invention, a hardware testing platform simulates battery and grid operating conditions and collects data; a central control and processing unit serves as the core scheduling unit; a standard test case database stores structured test cases; an automated testing engine parses the test cases and drives the hardware platform to execute fully automated serialized tests, during which test conditions can be adaptively fine-tuned; and an intelligent analysis and report generation module automatically compares the measured data with expected criteria and generates a detailed test report with one click. Therefore, this invention achieves full-process automation, standardization, and intelligence in energy storage converter certification testing, significantly improving testing efficiency, accuracy, and consistency, and solving the problems of low efficiency, error-proneness, and difficulty in rigorous benchmarking in traditional manual testing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 The diagram shown is a schematic of the automatic testing system for energy storage converter certification standards provided by this invention. Figure 2 The diagram shows an automatic testing method for energy storage converter certification standards provided by this invention. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Typical embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Figure 1 The diagram shown is a schematic of the automatic testing system for energy storage converter certification standards provided by this invention. Figure 1 As shown, the automatic testing system for energy storage converter certification standards provided by this invention includes a hardware testing platform 100, a central control and processing unit 200, a standard test case database 300, an automated testing engine 400, and an intelligent analysis and report generation module 500. The hardware testing platform 100 simulates battery and grid operating conditions and collects data; the central control and processing unit 200 is communicatively connected to the hardware testing platform and serves as the core scheduler; the standard test case database 300 stores structured test cases; the automated testing engine 400 is connected to both the standard test case database and the central control and processing unit, and is used to parse test cases and drive the hardware platform to execute fully automated serialized tests, adaptively fine-tuning test conditions during the process; the intelligent analysis and report generation module 500 is connected to both the automated testing engine and the hardware testing platform, and is used to automatically compare measured data with expected criteria and generate detailed test reports with one click. Therefore, this invention achieves full-process automation, standardization, and intelligence in energy storage converter certification testing, significantly improving testing efficiency, accuracy, and consistency, and solving the problems of low efficiency, error-proneness, and difficulty in rigorous benchmarking in traditional manual testing.

[0023] Specifically, in one embodiment of the present invention, the hardware testing platform 100 constitutes the physical basis for testing, including a programmable DC power supply, a power grid simulator, a data acquisition unit integrating multiple measurement devices, and an interface cabinet. The programmable DC power supply is used to simulate a battery and provide adjustable DC voltage and current to the energy storage converter under test according to the excitation signal parameters in the standardized test cases. The power grid simulator is used to simulate the power grid and simulate various power grid conditions, including normal operating conditions, voltage and frequency variations, waveform distortion, and power grid faults, according to the excitation signal parameters in the standardized test cases. The data acquisition unit is used to collect electrical data from the energy storage converter under test and the hardware testing platform during the testing process. The interface cabinet provides standardized electrical and communication interfaces for connecting and integrating the programmable DC power supply, the power grid simulator, the data acquisition unit, and the energy storage converter under test.

[0024] In this invention, the programmable DC power supply can dynamically adjust its output voltage and current values ​​according to the instructions of the automated test engine during the test to simulate different charging and discharging states of the battery. The grid simulator can accurately simulate various grid disturbances and fault events specified in the standards, including voltage sags, voltage dips, frequency shifts, harmonic injections, and grid interruptions. The data acquisition unit integrates a power analyzer, oscilloscope, and / or data logger to simultaneously acquire multiple power quality parameters, including voltage, current, power, harmonics, and flicker. Thus, the hardware test platform, through the organic combination of the programmable DC power supply and the grid simulator, can flexibly and accurately simulate various charging and discharging states of the battery, as well as normal, abnormal, and even fault conditions of the power grid, providing a comprehensive and standard-compliant test environment for the energy storage converter under test. Its integrated data acquisition unit ensures high-frequency, synchronous, and high-precision measurement of key electrical parameters, while the standardized interface cabinet greatly simplifies the system connection and configuration process. Overall, the platform not only lays a solid physical foundation for the reliable execution of automated test sequences, but also effectively overcomes the drawbacks of traditional manual testing, such as low efficiency, poor consistency, and imprecise condition control, thereby significantly improving the reliability, repeatability, and overall efficiency of certification testing.

[0025] Specifically, in one embodiment of the present invention, the central control and processing unit 200 is used to control the programmable DC power supply, the power grid simulator, and the data acquisition unit of the hardware test platform to work together. Through a unified instruction interface and protocol conversion, the central control and processing unit integrates the dispersed programmable power supply, power grid simulator, data acquisition device, and converter under test into a highly coordinated organic whole, thereby enabling it to automatically and without interruption execute a complete test sequence, including multi-device parameter configuration, timing control, excitation application, and data acquisition, according to standard test cases.

[0026] Specifically, in one embodiment of the present invention, a standard test case database 300 stores multiple standardized test cases generated based on the structured decomposition of at least one target certification standard; wherein each standardized test case includes at least a test item identifier, test purpose, preconditions, stimulus signal parameters, test step sequence, expected result criteria, and data acquisition requirements. In the present invention, the standard test case database stores standardized test cases generated based on the structured decomposition of a target certification standard (such as IEEE 1547, GB / T 34120), thereby transforming the abstract, textual certification standard (such as IEEE 1547, GB / T 34120) into a structured, digital, and machine-interpretable unified test instruction set.

[0027] In this invention, by decomposing standard clauses into test cases containing elements such as "preconditions, stimulus parameters, step sequences, and expected criteria," the ambiguity, omissions, or execution order deviations that may arise from manual interpretation of standards are completely eliminated. Each system test strictly adheres to the same digital definition, ensuring complete consistency between test conditions, processes, and judgment criteria. Every parameter and action instruction in the structured test cases can be unambiguously parsed by the automated testing engine and precisely driven to execute by the hardware platform. This replaces the inefficient traditional model that relies on engineers manually reading standards, configuring equipment, and recording observations, and is the fundamental prerequisite for achieving "one-click fully automated" operation of the testing process. Simultaneously, each test result (pass / fail) is directly linked to a unique "test item identifier" and complete execution logic in the database, achieving full lifecycle digital traceability of testing activities and greatly simplifying problem reproduction, report auditing, and quality control. Furthermore, the database adopts a modular design. When adding or updating certification standards (such as adapting to new versions of GB / T or adding UL standards), only the corresponding test case library needs to be structured and imported or updated into the database, without modifying the underlying system architecture or core execution engine. This allows the system to quickly adapt to evolving certification requirements. At the same time, the accumulated test case library constitutes a valuable standardized testing knowledge asset.

[0028] Specifically, in one embodiment of the present invention, the automated testing engine 400 is used to parse and execute standardized test cases selected from the standard test case database. Based on the test step sequence and excitation signal parameters of the selected standardized test cases, it automatically generates a control command sequence and sends it to the central control and processing unit to control the hardware testing platform to execute multiple test items, monitor the test status in real time, and automatically trigger the data acquisition unit to record test data. The test items include one or more of basic performance tests, protection function tests, and power quality tests. In this embodiment, the automated testing engine is configured to execute the loaded standardized test cases one by one according to a preset test logic order. For each executed standardized test case, the automated testing engine performs the following operations through the central control and processing unit: automatically configures the parameters of the programmable DC power supply and the power grid simulator and applies excitation signals; controls the start / stop and operation mode switching of the tested energy storage converter; and synchronously starts the data acquisition unit to collect data.

[0029] In this invention, an automated testing engine automatically parses digital test plans and transforms them into precise, time-controlled sequences of equipment instructions. This achieves fully automated execution of the entire process, from test configuration and stimulus application to equipment operation and data acquisition, completely eliminating the intermittent operation and human error inherent in traditional manual testing. The engine strictly follows the step sequence defined by the test cases, reliably handling complex test scenarios with strict time dependencies, multiple state transitions, or conditional branches (e.g., performing overvoltage protection testing first, then automatically restoring conditions and executing reconnection testing after the converter trips). This capability is crucial for accurately verifying the dynamic behavior of energy storage converters in real-world grid events. By driving the hardware platform, the engine can automatically execute diverse test items covering basic performance (e.g., efficiency), protection functions (e.g., overvoltage / overcurrent), power quality (e.g., harmonics), and even environmental simulation (e.g., temperature and humidity cycling). This one-stop automated execution capability integrates and unifies testing tasks that previously required multiple engineers to complete step-by-step on different professional test benches, greatly improving the completeness and efficiency of certification testing. The automated testing engine transforms structured testing knowledge into repeatable, high-precision physical verification, ensuring high consistency, repeatability, and efficiency in the testing process.

[0030] Furthermore, in one embodiment of the present invention, the automated testing engine is also used to monitor the output conditions of the hardware testing platform in real time during test execution, and when the output conditions are detected to deviate from the preset requirements of the currently executed standardized test case, automatically generate adjustment instructions and fine-tune the parameters of the hardware testing platform through the central control and processing unit to make the test conditions meet the standard requirements. In traditional testing, after the initial setup of the equipment, its output may drift slowly due to temperature drift, load effects, or power grid fluctuations, introducing systematic errors. This system forms a closed-loop feedback by real-time monitoring of key parameters (such as the amplitude and waveform of voltage and frequency) and instant comparison with the high-precision preset requirements in the test case. Once an out-of-tolerance trend is detected, the output of the power supply or simulator is automatically fine-tuned to lock the test conditions within the standard allowable tolerance range. Thus, it can actively compensate for test condition disturbances caused by changes in the laboratory environment (such as temperature), equipment aging, or sudden changes in the working state of the test device. For example, in long-term temperature rise testing, the system can automatically maintain a constant DC power supply voltage; when performing power grid disturbance testing, it can ensure that the base voltage and frequency before the fault occurs are absolutely accurate. This avoids invalid tests or misjudgments caused by the instability of the testing platform itself, greatly improving the effectiveness of the test data.

[0031] Specifically, in one embodiment of the present invention, the intelligent analysis and report generation module 500 is used to automatically compare and analyze the measured data recorded by the data acquisition unit with the expected result criteria in the corresponding standardized test cases, and automatically generate a detailed test report containing test data, analysis and comparison results, and test conclusions according to a preset report template. The automatic comparison and analysis performed by the intelligent analysis and report generation module includes: extracting feature data corresponding to the expected result criteria from the measured data, comparing the feature data with the criterion threshold or range, and automatically determining whether a single test result is passed or failed. In this embodiment, the module automatically extracts feature values ​​(such as precise trip voltage and full-load efficiency) and compares them with digitized criteria, completely eliminating subjective errors caused by manually reading charts, estimating values, and comparing with standards. Once the test is completed, the conclusion is generated immediately, ensuring the objectivity, consistency, and timeliness of the judgment. The module generates a complete formal report with one click according to the preset template. The report automatically includes raw data, feature results, judgment conclusions, and a line-by-line comparison with the standard, with a unified format, standardized content, and traceable information. All test results and reports are stored in a structured manner, forming a valuable product performance database.

[0032] This invention constructs a certification testing system integrating a hardware testing platform, a central control and processing unit, a standard test case database, a fully automated testing engine, and an intelligent analysis and reporting module. This achieves closed-loop automation of the entire testing process for energy storage converters, from configuration and execution to analysis and reporting. It significantly reduces manual testing, which previously relied on senior engineers and took weeks, to just a few days or even less, greatly improving testing efficiency. Through standardized digital test cases and automated execution, it completely eliminates human error and interpretation bias, ensuring the accuracy of test conditions and the high repeatability and traceability of results. Simultaneously, the system significantly lowers the technical threshold and labor costs for testing, enabling intermediate-level technicians to reliably complete complex certifications. Furthermore, it allows for flexible adaptation to new standards by updating the test case library, forming a valuable and reusable test knowledge asset. This provides an efficient, reliable, and authoritative one-stop solution for product development and quality certification.

[0033] Figure 2 The diagram shows a flowchart of the automatic testing method for energy storage converter certification standards provided by this invention. Figure 2 As shown, the testing method includes the following steps: Step S1: Connect the energy storage converter under test to the interface cabinet and receive the user's input instruction for selecting the certification standard or test item; Step S2: According to the selection instruction, load one or more corresponding standardized test cases from the standard test case database, and parse them by the automated test engine; Step S3: Automatically generate a control command sequence based on the test step sequence and excitation signal parameters of the selected standardized test cases and send it to the central control and processing unit to control the hardware test platform to execute multiple test items; for each test item, automatically configure the parameters of the programmable DC power supply and the power grid simulator to apply excitation, control the operation of the tested energy storage converter, and simultaneously start the data acquisition unit to record data; Specifically, in one embodiment of the present invention, the test items include one or more of the following: basic performance test, protection function test, and power quality test.

[0034] Step S4: After a single test or a series of tests is completed, the feature data in the actual test data is automatically extracted and compared with the expected result criteria in the corresponding standardized test cases to automatically determine the pass status of each test item. Specifically, in one embodiment of the present invention, the key test parameters include the voltage and frequency output by the power grid simulator; the feature data includes at least one of overvoltage protection action value, efficiency value, and harmonic content THDi; feature data corresponding to the expected result criteria are extracted from the measured data, and the feature data are compared with the criterion threshold or range to determine whether a single test result is passed or failed.

[0035] Step S5: Based on the measured data of all test items, the analysis and comparison results and the judgment conclusions, automatically generate a complete certification test report according to the preset template.

[0036] Specifically, in one embodiment of the present invention, if all test items are determined to pass, the report generation module automatically summarizes the test data, generates test conclusions, and attaches the original data to form an certification test report; if any test item is determined to fail, the report generation module records the detailed information of the failed item.

[0037] Furthermore, in one embodiment of the present invention, the method further includes: real-time monitoring of the output conditions of the hardware testing platform, and when the output conditions are detected to deviate from the preset requirements of the currently executed standardized test cases, automatically generating adjustment instructions and fine-tuning the parameters of the hardware testing platform through the central control and processing unit to make the test conditions meet the standard requirements.

[0038] The working process of this invention will be described in detail below with reference to a specific test item, "Power Grid Overvoltage Protection Point Test (according to IEEE 1547-2018)".

[0039] 1. System Connection: Connect the AC port of the energy storage converter under test (rated voltage 480Vac) to the grid simulator, and connect the DC port to the programmable DC power supply.

[0040] 2. User selection: The user selects "IEEE1547" -> "Overvoltage protection (OV2)" in the test case tree of the software interface.

[0041] 3. Use Case Analysis: The system loads this use case, and an example of its content is as follows: Test objective: To verify that the PCS stops supplying power within a specified time when the grid voltage exceeds a set threshold.

[0042] Prerequisite: The PCS is in full-power grid-connected operation.

[0043] Excitation signal: The output voltage of the power grid simulator slowly and linearly increases from 100% of the rated value to 120%.

[0044] Data acquisition: Record AC voltage, AC current, and PCS status.

[0045] Criterion: When the voltage exceeds 110% of the rated voltage, the PCS should stop outputting current within 2.0 seconds.

[0046] 4. Automatic execution: The automated test engine first sends an instruction to make the DC power supply output the rated voltage and start the PCS. Then, it instructs the grid simulator to output 100% rated voltage (480V) to make the PCS connected to the grid and reach the rated power. Next, the engine instructs the grid simulator to slowly boost the voltage at a rate of 1% per second (481V, 482V...). The data acquisition unit synchronously records the voltage and current values with high density.

[0047] 5. Intelligent analysis and determination: After the test is completed, the intelligent analysis module scans the data to find the time point t_trip when the current drops from the rated value to close to 0. Find the grid voltage value V_trip corresponding to the t_trip moment.

[0048] Perform automatic determination: If 105% < V_trip < 115% (considering tolerance) and t_trip < 2.0s, then determine that this item "passes", otherwise "fails". The system automatically records the determination result and key data (V_trip = 112.3%, t_trip = 1.5s).

[0049] 6. Report generation: The test curves (voltage - time, current - time), key results, and determination conclusions of this project are automatically filled into the corresponding chapters of the report template.

[0050] After all selected items are executed, the user can export the complete test report in PDF or word format with one click.

[0051] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well - known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0052] Similarly, it should be understood that in order to streamline this disclosure and help understand one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be construed as reflecting the intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected by the following claims, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present invention.

[0053] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0054] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0055] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components according to the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0056] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. An automatic testing system for energy storage converter certification standards, characterized in that, include: The hardware testing platform includes a programmable DC power supply for simulating batteries, a power grid simulator for simulating power grids, a data acquisition unit for collecting test data, and an interface cabinet for connecting the energy storage converter under test. The central control and processing unit is communicatively connected to the hardware testing platform and is used to control the programmable DC power supply, the power grid simulator and the data acquisition unit of the hardware testing platform to work together. The standard test case database stores multiple standardized test cases generated based on the structured decomposition of at least one target certification standard; wherein each of the standardized test cases includes at least a test item identifier, test purpose, preconditions, stimulus signal parameters, test step sequence, expected result criteria, and data collection requirements; An automated testing engine is connected to the standard test case database and the central control and processing unit, respectively. It is used to parse and execute standardized test cases selected from the standard test case database, automatically generate control command sequences based on the test step sequence and excitation signal parameters of the selected standardized test cases, and send them to the central control and processing unit to control the hardware testing platform to execute multiple test items, monitor the test status in real time, and automatically trigger the data acquisition unit to record test data. The intelligent analysis and report generation module is connected to the automated testing engine and the data acquisition unit. It is used to automatically compare and analyze the measured data recorded by the data acquisition unit with the expected result criteria in the corresponding standardized test cases, and automatically generate a detailed test report containing test data, analysis and comparison results and test conclusions according to the preset report template.

2. The automatic testing system for energy storage converter certification standards according to claim 1, characterized in that, The programmable DC power supply is used to provide adjustable DC voltage and current according to the excitation signal parameters of the test case; the power grid simulator is used to simulate the voltage, frequency, waveform distortion and fault conditions of the power grid according to the excitation signal parameters of the test case.

3. The automatic testing system for energy storage converter certification standards according to claim 1, characterized in that, The test items include one or more of the following: basic performance test, protection function test, and power quality test.

4. The automatic testing system for energy storage converter certification standards according to claim 1, characterized in that, The automated testing engine is also used to monitor the output conditions of the hardware testing platform in real time during test execution, and when it detects that the output conditions deviate from the preset requirements of the currently executed standardized test cases, it automatically generates adjustment instructions and fine-tunes the parameters of the hardware testing platform through the central control and processing unit so that the test conditions meet the standard requirements.

5. The automatic testing system for energy storage converter certification standards according to claim 1, characterized in that, The automatic comparison analysis performed by the intelligent analysis and report generation module includes: extracting feature data corresponding to the expected result criteria from the actual test data, comparing the feature data with the criterion threshold or range, and automatically determining whether a single test result is passed or failed.

6. An automatic testing method for energy storage converter certification standards based on the system described in any one of claims 1 to 5, characterized in that, Includes the following steps: Step S1: Connect the energy storage converter under test to the interface cabinet and receive the user's input instruction for selecting the certification standard or test item; Step S2: According to the selection instruction, load one or more corresponding standardized test cases from the standard test case database, and parse them by the automated test engine; Step S3: Automatically generate a control command sequence based on the test step sequence and excitation signal parameters of the selected standardized test cases and send it to the central control and processing unit to control the hardware test platform to execute multiple test items; for each test item, automatically configure the parameters of the programmable DC power supply and the power grid simulator to apply excitation, control the operation of the tested energy storage converter, and simultaneously start the data acquisition unit to record data; Step S4: After a single test or a series of tests is completed, the feature data in the actual test data is automatically extracted and compared with the expected result criteria in the corresponding standardized test cases to automatically determine the pass status of each test item. Step S5: Based on the measured data of all test items, the analysis and comparison results and the judgment conclusions, automatically generate a complete certification test report according to the preset template.

7. The test method according to claim 6, characterized in that, Also includes: The output conditions of the hardware testing platform are monitored in real time. When the output conditions deviate from the preset requirements of the currently executed standardized test cases, adjustment instructions are automatically generated and the parameters of the hardware testing platform are fine-tuned through the central control and processing unit to make the test conditions meet the standard requirements.

8. The test method according to claim 6, characterized in that, The test items include one or more of the following: basic performance test, protection function test, and power quality test.

9. The test method according to claim 6, characterized in that, In step S5, if all test items are deemed to have passed, the report generation module automatically summarizes the test data, generates test conclusions, and attaches the original data to form an certification test report; if any test item is deemed to have failed, the report generation module records the detailed information of the failed item.

10. The test method according to claim 6, characterized in that, In step S4, feature data corresponding to the expected result criteria are extracted from the measured data, and the feature data is compared with the criterion threshold or range to determine whether a single test result is passed or failed.

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