Dual-mode carrier module comprehensive performance application evaluation test system and test method thereof

Abstract

The invention discloses a dual-mode carrier module comprehensive performance application evaluation test system and a test method thereof, and a dual-mode communication simulation unit is used for accessing a to-be-tested dual-mode communication module in a shielding environment, and constructing a reconfigurable virtual communication network; the programmable interference injection unit is used for injecting configurable noise and interference signals into a specified communication link in the virtual communication network; the deepening application simulation unit is used for simulating physical topology and dynamic working conditions of a real power grid; the deepening application simulation unit at least comprises a multi-zone power supply simulation module, a working condition simulation control module and a hardware performance excitation module; and the central control and evaluation unit is used for configuring a test scene, automatically executing a combined test process, collecting and recording multi-dimensional data in a test process and carrying out association analysis and comprehensive evaluation. According to the invention, a simulation test platform with reconfigurable hardware, definable software and integrated test is constructed, and the depth and efficiency of test diagnosis are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of communication testing technology, and in particular to a comprehensive performance evaluation testing system and testing method for a dual-mode carrier module. Background Technology

[0002] With the development of smart grids and new power systems, high-speed power line carrier (HPLC) and high-speed radio frequency (HRF) dual-mode communication technology is gradually replacing single-mode communication due to its high bandwidth, high reliability, and environmental adaptability. It is becoming a key local communication method for services such as electricity information collection, distributed energy monitoring, and precise load control. Dual-mode modules not only need basic communication capabilities but also need to support advanced application functions such as high-frequency data acquisition, proactive power outage reporting, and automatic identification of transformer areas and phases, while meeting stringent hardware reliability requirements (such as low power consumption). Therefore, comprehensive performance evaluation in a near-real-world laboratory environment is crucial.

[0003] Existing dual-mode communication testing technologies primarily focus on single-dimensional performance verification, exhibiting systemic shortcomings. Firstly, in communication performance testing, existing technologies (e.g., patent applications with publication numbers CN113395086A, CN116614425A, CN117997380A, and CN120017183A) construct controllable test channels using shielded boxes, programmable attenuators, and noise injection. However, the test topology is relatively fixed, making it difficult to flexibly simulate the ever-changing network structures in the field (such as multi-level routing and hybrid networking) through "free combination of different cabinets." Secondly, in application function testing, existing technologies lack deep coupling with the real power grid environment; they cannot simulate the physical topology of "multiple transformer areas coexisting," thus making it difficult to effectively verify the "transformer area identification" and "phase identification" functions that rely on power grid phase characteristics; they also cannot simulate dynamic operating conditions such as "power outages and restorations," thus failing to accurately test the timeliness and accuracy of functions such as "active power outage reporting." Secondly, in terms of testing, existing solutions separate communication testing, hardware testing (such as power consumption), and business application testing (such as high-frequency data acquisition). For example, they cannot test "how the efficiency and latency of high-frequency data acquisition will change after applying specific communication interference," which is crucial for evaluating system robustness. Finally, the level of testing automation and intelligence is insufficient; constructing complex test scenarios and correlating and analyzing cross-domain data still heavily relies on manual labor, resulting in low efficiency and poor consistency.

[0004] Therefore, it is necessary to provide a comprehensive performance evaluation and testing system and method for dual-mode carrier modules to overcome the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to provide a comprehensive performance evaluation and testing system and method for dual-mode carrier modules, aiming to improve the problems of existing dual-mode carrier testing systems, such as limited testing functions, low efficiency, and poor consistency, and to achieve a comprehensive and highly realistic performance evaluation of dual-mode modules from hardware to protocol, from communication to application.

[0006] To achieve the above objectives, the present invention provides a comprehensive performance evaluation and testing system for a dual-mode carrier module, comprising: The dual-mode communication simulation unit is used to connect the dual-mode communication module under test in a shielded environment, and simulates the roles of concentrators, energy meters and various distribution network equipment by combining software virtualization technology with physical modules, so as to build a reconfigurable virtual communication network. A programmable interference injection unit is used to inject configurable noise and interference signals into a specified communication link in the virtual communication network; wherein the noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed based on field-acquired data; The application simulation unit is connected to the dual-mode communication simulation unit to simulate the physical topology and dynamic operating conditions of the real power grid, so as to trigger and test the target application function of the dual-mode communication module under test. The advanced application simulation unit includes at least the following: The multi-zone power supply simulation module is used to generate at least two AC power frequency power supplies with independent phase, amplitude and harmonic characteristics to accurately simulate the power supply environment of different distribution transformer zones. The operating condition simulation control module is used to control the multi-zone power supply simulation module to generate at least one electrical event among power outage, power restoration, voltage sag, three-phase imbalance, and harmonic injection. The hardware performance stimulus module is used to perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test. The central control and evaluation unit is connected to the dual-mode communication simulation unit, the programmable interference injection unit, and the in-depth application simulation unit, respectively, and is used to configure test scenarios, automatically execute combined test processes, collect and record multi-dimensional data during the test process, and perform correlation analysis and comprehensive evaluation on the multi-dimensional data.

[0007] In a preferred embodiment, the configuration test scenario includes: setting the topology of the virtual communication network in a graphical manner, controlling the interference type and intensity of the programmable interference injection unit, and setting the electrical operating condition sequence and hardware test parameters of the in-depth application simulation unit; The combined testing process includes: while applying specific communication interference, triggering changes in power grid operating conditions, and executing a high-frequency data acquisition task; The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit; The correlation analysis and comprehensive evaluation include generating a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of in-depth application functions of the dual-mode communication module under test.

[0008] In a preferred embodiment, the combined testing process includes a high-frequency data acquisition performance testing process, as follows: Set the preset frequency data acquisition task cycle, start delay, and data type to be acquired; Perform the data acquisition task in a stable communication environment, and record the success rate of data reading, data integrity, and the actual latency of each acquisition. The programmable interference injection unit applies a preset interference signal to the channel. Repeatedly perform the same high-frequency acquisition task in an interference environment; By comparing and analyzing the service data before and after the application of the interference signal, the degree of reliability degradation of service functions in complex communication environments is quantitatively assessed.

[0009] In a preferred embodiment, the central control and evaluation unit includes a data comparison and correlation analysis module, which is used to: timestamp-align and automatically compare the results of the preset frequency data acquisition obtained from the test, the data reported by the in-depth application function, and the module power consumption data with the expected data that should theoretically be generated according to the test scenario configuration; and establish a correlation model between communication channel quality indicators, power grid event sequences, module hardware status, and business application performance indicators in order to analyze the root cause of performance bottlenecks.

[0010] In a preferred embodiment, the programmable interference injection unit includes: A multi-channel signal source is used to generate standard HPLC / HRF communication signals and various preset interference signal waveforms; A high-isolation directional coupler network is used to couple the communication signal and interference signal into a designated HPLC channel or HRF channel with high forward and backward isolation. A programmable attenuation matrix, connected after the coupler network, is used to precisely and programmatically control the attenuation of the injected signal strength to simulate path loss at different distances.

[0011] In a preferred embodiment, the hardware performance stimulus module also serves as a topology and phase recognition stimulus module, which works in conjunction with the multi-station power supply simulation module to test the automatic station identification and phase recognition functions by executing the following process: Near the zero-crossing point of the power frequency power supplies with different phase characteristics output by the multi-zone power supply simulation module, a specific carrier characteristic signal is modulated and transmitted. The central control and evaluation unit sends a topology detection command to the dual-mode communication module under test in the virtual communication network. Each of the dual-mode communication modules under test listens to and analyzes the carrier characteristic signal. Only the module connected to the same phase power line can correctly capture the characteristic signal. The dual-mode communication module under test that has captured the characteristic signal reports the data according to the preset parent-child hierarchical relationship based on the instructions. The central control and evaluation unit automatically analyzes and verifies the accuracy of the station area attribution and phase identification based on the reported results.

[0012] In a preferred embodiment, the dual-mode communication simulation unit is implemented by multiple physically isolated shielded test cabinets. Each shielded test cabinet has an independent power supply, communication interface and signal conditioning circuit built in, which is used to accommodate one or more dual-mode communication modules or virtual role devices under test. The shielded test cabinets are flexibly connected to external programmable attenuation links and interference injection links through a backplane bus, which allows any cabinet to be freely set as a central node, routing node or leaf node in the network through software configuration, and dynamically constructs chain, star, tree or hybrid network topologies.

[0013] This invention also provides a method for evaluating the comprehensive performance of a dual-mode carrier module, which is based on a dual-mode carrier module comprehensive performance evaluation system. The dual-mode carrier module comprehensive performance evaluation system includes a dual-mode communication simulation unit, a programmable interference injection unit, an in-depth application simulation unit, and a central control and evaluation unit. The method includes the following steps: S10. Constructing a virtual test network: In a shielded environment, the dual-mode communication module under test is connected to the dual-mode communication simulation unit, and the dual-mode communication simulation unit is configured through software to simulate the roles of concentrator, energy meter and distribution network equipment, so as to construct a virtual communication network that can be flexibly reconfigured. S20. Injecting programmable interference: Through the programmable interference injection unit, configurable noise and interference signals are injected into a specified communication link in the virtual communication network. The noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed based on field-acquired data. S30. Simulate power grid operating conditions and provide test stimuli: Perform at least one of the following operations through the advanced application simulation unit: S31. Simulate power supply environment of multiple distribution transformer areas: Generate at least two AC power frequency power supplies with independent phase, amplitude and harmonic characteristics to simulate the power supply environment of different distribution transformer areas; S32, Simulate dynamic electrical events: Control the AC power frequency power supply to generate at least one of the following electrical events: power outage, power restoration, voltage sag, and three-phase imbalance; S33. Perform hardware performance testing: Perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test; S40. Perform integrated testing and data acquisition: Through the central control and evaluation unit, configure test scenarios, automatically execute combined test processes, and collect and record multi-dimensional data during the test process; S50. Conduct a comprehensive evaluation: Based on the collected multi-dimensional data, the central control and evaluation unit performs correlation analysis and comprehensive evaluation to generate a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of the in-depth application functions of the dual-mode communication module under test.

[0014] In a preferred embodiment, step S40 specifically includes: S41. Configure the test scenario according to the preset test cases. The configuration includes setting the topology of the virtual communication network, setting the interference parameters of the programmable interference injection unit, and arranging the working condition sequence of the in-depth application simulation unit. S42. The dual-mode communication simulation unit, programmable interference injection unit, and in-depth application simulation unit are automatically driven to work together to execute the combined test process; S43. Synchronously collect and record multi-dimensional data during the test process. The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit.

[0015] The dual-mode carrier module comprehensive performance application evaluation test system and its test method provided by this invention construct a simulation test platform that is hardware reconfigurable, software definable, and integrates testing, and has the following technical effects: (1) By freely combining cabinets, any field network topology can be quickly constructed. At the same time, for the first time, the collaborative simulation and testing of the three major elements of "communication interference", "power grid conditions" and "service traffic" has been realized, which can reproduce extremely complex scenarios such as "load control in a noisy channel during voltage sag", and the comprehensiveness of the test is unparalleled; (2) Through the “multi-area power supply simulation module” and “feature signal modulation” technology, a verifiable test benchmark based on real physical differences is provided for area identification and phase identification, which solves the problem of “inaccurate measurement” in the past for such functions; that is, the test of functions such as power outage reporting has also been upgraded from simple protocol verification to real event response test with timing accuracy. (3) Compared with the existing technology, it has increased the ability to test hardware indicators such as power consumption of the module under test, and can perform high-frequency acquisition tests under interference, directly and quantitatively analyze the impact of communication environment degradation on upper-layer service indicators (such as acquisition success rate and data delay), and realize end-to-end evaluation from "channel performance" to "service experience". (4) The integrated automated testing process avoids manual equipment switching and repeated environment setup. The correlation analysis function of the central control unit can automatically locate the root cause of the problem (for example, determine whether the meter reading failure is caused by channel interference or by abnormal power consumption of the module under low voltage), which greatly improves the depth and efficiency of test diagnosis. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 System block diagram of the dual-mode carrier module comprehensive performance application evaluation and testing system provided by the present invention; Figure 2 The HRF communication channel deployment topology diagram is provided in the dual-mode carrier module comprehensive performance application evaluation and testing system of this invention. Figure 3 The HPIC communication channel deployment topology diagram is shown in the comprehensive performance evaluation and testing system for dual-mode carrier modules provided by this invention. Figure 4 The flowchart shows the application evaluation test method for the comprehensive performance of the dual-mode carrier module provided by this invention.

[0018] 100. Dual-mode communication analog unit; 101. Shielded enclosure; 102. Module interface panel; 103. Local control and signal conditioning board; 104. Backplane bus; 200. Programmable interference injection unit; 201. Multi-channel signal source; 202. High-isolation directional coupler network; 203. Programmable attenuation matrix; 204. Combiner / splitter; 205. Control logic module; 300. In-depth application simulation unit; 301. Multi-zone power supply simulation module; 302. Operating condition simulation control module; 303. Hardware performance excitation module; 400. Central control and evaluation unit; 401. Data comparison and correlation analysis module. Detailed Implementation

[0019] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described in this specification are merely for explaining the invention and are not intended to limit the invention.

[0020] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0021] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0022] In embodiments of the present invention, a comprehensive performance evaluation and testing system for dual-mode carrier modules is provided. This system can test the performance of various single / three-phase meters, carrier meters, and virtual meters under different operating conditions. It can also be expanded to include other types of devices requiring connection, such as smart switches, simulated charging piles, and photovoltaic systems. Therefore, it not only supports traditional power supply CCOs (Central Coordinators), single-phase STAs (Single Phase Stations), and three-phase STAs, but is also compatible with distribution network equipment HPLC+HRF dual-mode modules, such as the central node module on the SCU (System Control Unit), the positive insertion and test insertion modules on the measurement switch, and IoT modules. The system includes HPLC+HRF communication dual-mode dual-channel, employing an integrated control bus and signal bus approach for signal control and measurement to meet different needs.

[0023] like Figures 1-3 As shown, the dual-mode carrier module comprehensive performance application evaluation and testing system includes: a dual-mode communication simulation unit 100, a programmable interference injection unit 200, an in-depth application simulation unit 300, and a central control and evaluation unit 400. These units are interconnected via control bus, data bus, and RF / carrier signal links, forming a collaborative and organic whole.

[0024] The dual-mode communication simulation unit 100 is used to connect the dual-mode communication module under test in a shielded environment. Through a combination of software virtualization technology and physical modules, it simulates the roles of concentrators, energy meters, and various distribution network devices to construct a reconfigurable virtual communication network. Therefore, the dual-mode communication simulation unit 100 is the physical foundation for building a virtual test network. Its core lies in simulating various communication nodes in the field with high fidelity through a combination of hardware modularization and software virtualization.

[0025] The dual-mode communication simulation unit 100 is implemented by multiple physically isolated shielded test cabinets. Each shielded test cabinet has an independent power supply, communication interface and signal conditioning circuit built in, which is used to accommodate one or more dual-mode communication modules or virtual role devices under test. The shielded test cabinets are flexibly connected to external programmable attenuation links and interference injection links through a backplane bus, which allows any cabinet to be freely set as a central node, routing node or leaf node in the network through software configuration, and dynamically constructs chain, star, tree or hybrid network topologies.

[0026] Specifically, the dual-mode communication simulation unit 100 consists of multiple standardized, freely combinable shielded test cabinets. Each cabinet is an independent physical node, integrating the following internal components: Shielded enclosure 101: Made of metal, ensuring electromagnetic shielding effectiveness ≥70dB, operating frequency coverage 1Hz-1GHz, effectively isolating external space interference and unexpected signal crosstalk between cabinets; Module interface panel 102: Provides various physical interfaces for connecting dual-mode communication modules under test (such as dual-mode CCO, single-phase STA, and three-phase STA modules), virtual meter modules, or other power distribution equipment simulation modules (such as smart switch simulators). Interface types include shielded aviation connectors for carrier signal coupling, SMA connectors for HRF signal connections, and RJ45 / RS-485 interfaces for power supply and low-speed data communication; Local control and signal conditioning board 103: This board integrates a microcontroller (MCU), a serial server (RS-485 to Ethernet conversion), a relay array, and power management circuitry. Its functions include: powering the dual-mode communication module under test (adjustable voltage range 154-286V, accuracy 0.2%), resetting the control module, switching module operating modes, and performing necessary impedance matching and preliminary filtering on carrier and wireless signals entering and exiting the shielded enclosure 101. Backplane bus 104: Used for data exchange between various boards within the cabinet; Network Topology Construction: The external signal interfaces (HPLC and HRF ports) of each shielded test cabinet are connected via external programmable attenuation links and interference injection links (belonging to the programmable interference injection unit 200). Users can connect the cabinet icons to form the desired network topology by dragging and dropping through the software interface of the central control and evaluation unit 400. The software then automatically configures the corresponding attenuator matrix and RF switches to physically implement the topology. For example, a three-level tree network can be constructed, containing one "concentrator" cabinet (as CCO), three "router" cabinets (as STA), and 20 "meter" cabinets (as STA). This approach achieves "software-defined networking with dynamic hardware reconfiguration," greatly improving the flexibility of the testing scenario.

[0027] The programmable interference injection unit 200 is used to inject configurable noise and interference signals into a specified communication link in the virtual communication network of the dual-mode communication simulation unit 100. The noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed from field-acquired data. In other words, the programmable interference injection unit 200 is responsible for introducing various types of interference into a controlled channel to evaluate the anti-interference capability of dual-mode communication.

[0028] In one embodiment, the programmable interference injection unit 200 includes: a multi-channel signal source 201, a high-isolation directional coupler network 202, a programmable attenuation matrix 203, a combiner / splitter 204, and a control logic module 205.

[0029] The multi-channel signal source 201 includes a high-performance signal source device for generating standard HPLC / HRF communication signals and various preset interference signal waveforms. For example, a Keysight N5172B / N5182B vector signal source can be used as an HRF interference signal source to generate precisely modulated OFDM (Orthogonal Frequency Division Multiplexing) signals or various types of noise within the 470MHz~510MHz frequency band. A dedicated HPLC signal / noise source covering the 0.3MHz~12MHz frequency band can be used to generate standard HPLC test frames, white noise, narrowband noise (such as continuous wave interference at a specific frequency), and impulse noise (transient interference such as simulated switching actions).

[0030] A high-isolation directional coupler network 202 is used to couple communication signals and interference signals into a designated HPLC or HRF channel with high forward and backward isolation. A directional coupler or a high-isolation amplifier can be used to inject the generated interference signal into the designated communication link, with a preferred reverse isolation of >60dB to ensure that the injected interference signal does not affect the signal source itself.

[0031] A programmable attenuation matrix 203 is connected after the high-isolation directional coupler network 202 to precisely and programmatically control the attenuation of the injected signal strength, simulating path loss over different distances. The programmable attenuation matrix 203 consists of multi-channel programmable attenuators (such as Weinschel models) connected in series after the coupling point. Its attenuation range is typically 0dB to 127dB, with a step accuracy of 0.1dB. Therefore, by programmatically controlling the attenuation value, path loss of the signal under different cable lengths and channel qualities can be accurately simulated.

[0032] Combiner / splitter 204 is used to combine multiple interference signals or test signals into a single channel, or to split channel signals to measurement equipment.

[0033] The control logic module 205 is used to receive instructions from the central control and evaluation unit 400 to determine the type of interference (e.g., "injecting narrowband noise with a center frequency of 5 MHz and a bandwidth of 100 kHz"), injection point (e.g., "on the HPLC link between cabinet A and cabinet B"), intensity (e.g., "signal-to-noise ratio set to 10 dB"), and duration.

[0034] Therefore, this embodiment refines the precision of the interference injection unit. The "multi-channel signal source 201" supports the synthesis of complex interference scenarios, the "high isolation directional coupler 202" ensures that the injected signal is pure and does not backflow, and the "programmable attenuation matrix 203" realizes the fine simulation of path loss.

[0035] The in-depth application simulation unit 300 is connected to the dual-mode communication simulation unit 100 to simulate the physical topology and dynamic operating conditions of a real power grid, thereby triggering and testing the target application functions of the dual-mode communication module under test. In other words, the in-depth application simulation unit 300 can simulate the physical characteristics and dynamic behavior of a real power grid, providing a realistic stimulus source for testing the in-depth application functions of the dual-mode module.

[0036] In one embodiment, the advanced application simulation unit 300 includes at least: a multi-zone power supply simulation module 301, a working condition simulation control module 302, and a hardware performance excitation module 303.

[0037] The multi-zone power supply simulation module 301 is used to generate at least two AC power frequency power supplies with independent phase, amplitude, and harmonic characteristics to accurately simulate the power supply environment of different distribution transformer substations. Specifically, the core of the multi-zone power supply simulation module 301 is one or more programmable AC power supplies (such as ITCH 7233 groups, high-power >9000VA programmable AC / DC power supplies). This power supply can output single-phase or three-phase AC power, and the voltage range (154V~286V), frequency (50Hz), and phase (0-360° adjustable) can all be independently and precisely controlled, and harmonics (such as 2nd to 31st harmonics) can be superimposed. Through user configuration, two or more independent "distribution transformer substations" can be simulated. For example, one AC power output with a phase of 0° can simulate "substation A", and another AC power output with a phase of 120° can simulate "substation B". The voltage amplitude and harmonic content of the two substations can be set differently to simulate real differences.

[0038] The operating condition simulation control module 302 is used to control the multi-zone power supply simulation module 301 to generate at least one electrical event among power outage, power restoration, voltage sag, three-phase imbalance, and harmonic injection. Specifically, the operating condition simulation control module 302 consists of a series of programmable contactors / solid-state relays and load banks, and is controlled by the central control and evaluation unit 400. The operating conditions that can be simulated include: momentary power outage (disconnecting a certain output), power restoration (closing), voltage sag / surge (rapidly adjusting the power supply output voltage), three-phase imbalance (adjusting the amplitude of each phase of the three-phase power supply), load switching (simulating the start and stop of high-power appliances through the load bank), etc.

[0039] The hardware performance stimulus module 303 is used to perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test. It can perform constant current, constant voltage, and constant power discharge, simulate the power consumption of the module under test under different working states, and record the dynamic power consumption curve to evaluate its energy consumption performance.

[0040] Furthermore, in one embodiment, the hardware performance stimulus module 303 also serves as a topology and phase recognition stimulus module, which works in conjunction with the multi-station power supply simulation module 301 to test the automatic station identification and phase recognition functions by executing the following process: Near the zero-crossing point of the power frequency power supply with different phase characteristics output by the multi-zone power supply simulation module 301, a specific carrier characteristic signal is modulated and transmitted; the central control and evaluation unit 400 issues a topology detection command to the dual-mode communication module under test in the virtual communication network; each dual-mode communication module under test listens to and parses the carrier characteristic signal, and only the module connected to the same phase power line can correctly capture the characteristic signal; the dual-mode communication module under test that captures the characteristic signal traverses and reports according to the preset parent-child hierarchical relationship according to the command; the central control and evaluation unit 400 automatically analyzes and verifies the accuracy of the zone affiliation and phase identification based on the reported results.

[0041] It should be noted that the hardware performance excitation module 303 can acquire the zero-crossing signal of the power frequency voltage and, within a very short time window before and after the zero-crossing point, control a signal generator through a high-speed switch to couple a specific, low-amplitude HPLC characteristic symbol (such as a special OFDM symbol) to the power frequency power line, forming a signal crosstalk environment for the simulated transformer area. Because this characteristic signal is strictly phase-locked at the power frequency zero-crossing point, only communication modules connected to the same phase power line can stably capture this signal within their HPLC receiving window. Power lines of different phases have different zero-crossing times, and the modulated characteristic signals are also staggered in time, thus forming a physical basis for phase differentiation.

[0042] This embodiment discloses how to convert the physical phase information of the power grid into logical topology information that can be recognized by the communication module. Therefore, this embodiment is not only a test function, but also clarifies an innovative test methodology, making the test results physically authentic and irreplaceable.

[0043] The central control and evaluation unit 400 is connected to the dual-mode communication simulation unit 100, the programmable interference injection unit 200, and the in-depth application simulation unit 300, respectively. It is used to configure test scenarios, automate the execution of combined test processes, collect and record multi-dimensional data during the test process, and perform correlation analysis and comprehensive evaluation of the multi-dimensional data. The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit 300, such as: spectrum analyzer / signal source readings, network packet capture data, measurement values ​​returned by virtual meters, electrical parameters of power supply output, and power consumption data recorded by electronic loads. All data is timestamped with high precision.

[0044] Specifically, configuring the test scenario includes: setting the topology of the virtual communication network of the dual-mode communication simulation unit 100 in a graphical manner, controlling the interference type and intensity of the programmable interference injection unit 200, and setting the electrical operating condition sequence and hardware test parameters of the in-depth application simulation unit 300.

[0045] The combined test procedure includes: simultaneously applying specific communication interference, triggering changes in power grid operating conditions, and executing a high-frequency data acquisition task. The combined test procedure specifically includes a high-frequency data acquisition performance test procedure, as follows: Set the preset frequency data acquisition task cycle (e.g., 15 minutes), start delay, and data type (voltage, current, active power, etc.); execute the acquisition task in a stable communication environment, and record the reading success rate, data integrity, and actual acquisition delay for each acquisition; apply a preset interference signal to the channel through the programmable interference injection unit 200; repeat the same high-frequency acquisition task in the interference environment; compare and analyze the service data before and after applying the interference signal, and quantitatively evaluate the degree of reliability degradation of service functions in complex communication environments.

[0046] For example, control command sequences can be automatically generated based on configured test cases. For instance, when executing a "power outage reporting" test, a power outage is simulated through the programmable contactor of the operating condition simulation control module 302; at the same time, high-speed data acquisition is started to monitor the communication channel; the power outage event reporting message sent by the dual-mode communication module under test is captured; and the time difference from the occurrence of the power outage event to the correct reception of the message (i.e., the reporting delay) is recorded.

[0047] Correlation analysis and comprehensive evaluation include generating a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of in-depth application functions of the dual-mode communication module under test.

[0048] Specifically, the central control and evaluation unit 400 includes a data comparison and correlation analysis module 401, which is used to: timestamp-align and automatically compare the results of data collection at a preset frequency (such as high frequency) obtained from the test, the data reported by the in-depth application function, and the module power consumption data with the expected data that should theoretically be generated according to the test scenario configuration; and establish a correlation model between communication channel quality indicators, power grid event sequences, module hardware status, and business application performance indicators in order to analyze the root cause of performance bottlenecks.

[0049] The specific process of correlation analysis and comprehensive evaluation includes: Protocol consistency analysis: The captured communication packets are compared field by field with the standard protocol (such as 1376.1 / 698.45) to generate a consistency report; Performance metrics calculation: Automatically calculates metrics such as meter reading success rate, network setup time, communication rate, and anti-interference threshold; Deepening application function verification: For phase identification, module 415 issues a topology identification command and then receives the reported information from each module. By comparing the reported "phase identifier" with the physical phase actually set in the deep application simulation unit 300, the recognition accuracy is automatically judged; for power outage reporting, the correctness and timeliness of the reported event are verified. Correlation analysis: Establish multi-dimensional data correlations. For example, analyze "how the delay of high-frequency acquisition tasks changes under impulse noise interference of a specific intensity" and "how the static power consumption of the module increases during concurrent communication services" to pinpoint the root cause of performance bottlenecks (whether it is a channel problem, a protocol problem, or a module hardware capability problem). Report generation: Automatically generates structured test reports, including test configuration, raw data, analysis results, and conclusions.

[0050] The following will use an exemplary specific embodiment to further illustrate the workflow of the above-mentioned units working together: (1) Scenario configuration: In the software interface, the testers configured shielded cabinets 101 (numbers 1, 2, and 3) to connect to the STA modules of the U, V, and W phases in area A. Test sequence arrangement: Phase identification was performed first, followed by high-frequency acquisition with a period of 15 minutes. At the beginning of the third acquisition period, a narrowband interference with a center frequency of 7 MHz was injected into the HPLC channel.

[0051] (2) System initialization: The central control and evaluation unit 400 automatically completes the following according to the configuration: outputting three phase voltages with a phase difference of 120° to the corresponding cabinet from the programmable AC power supply; constructing the preset network topology through the programmable attenuation matrix 203; and powering on and initializing all dual-mode communication modules under test.

[0052] (3) Perform phase identification test: The central control and evaluation unit 400 issues a topology identification command. At the same time, the characteristic signal modulation circuit modulates different characteristic signals at the zero-crossing points of the U, V, and W three-phase power supplies. The STA modules in each cabinet listen to and analyze the characteristic signals, and report the "phase identifier" they have identified in order to the next level. Then the analysis module compares the reported results with the preset phase to verify the correctness.

[0053] (4) Perform high-frequency acquisition and interference test: After phase identification is completed, the central control and evaluation unit 400 starts the high-frequency acquisition task and begins timing. In the first two cycles (30 minutes), the system stably acquires data in an interference-free environment and records the baseline performance. At the 31st minute, the execution command signal source generates narrowband interference and injects it into the relevant links through the coupling network.

[0054] (5) Data Acquisition and Analysis: During and after the interference injection, the system continuously performs data acquisition tasks. The data acquisition module synchronously records acquisition commands, response messages, interference signal parameters, and timestamps. After the test, the analysis module calculates the acquisition success rate, average communication delay, and other indicators before, during, and after interference, generates comparison charts and analysis conclusions, and judges the anti-interference service performance of the module.

[0055] This invention also provides a method for evaluating the overall performance of a dual-mode carrier module, implemented based on the aforementioned system for evaluating the overall performance of a dual-mode carrier module. The specific implementation principle of this method can be found in the relevant content of the aforementioned system for evaluating the overall performance of a dual-mode carrier module, and will not be repeated below.

[0056] Specifically, in combination Figure 4 As shown, the method includes the following steps S10-S50.

[0057] S10. Construct a virtual test network: In a shielded environment, connect the dual-mode communication module under test to the dual-mode communication simulation unit 100, and configure it through software to make the dual-mode communication simulation unit 100 simulate the roles of concentrator, energy meter and distribution network equipment, so as to construct a virtual communication network that can be flexibly reconfigured. S20. Inject programmable interference: Through the programmable interference injection unit 200, configurable noise and interference signals are injected into a specified communication link in the virtual communication network. The noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed based on field-acquired data. S30. Simulate power grid operating conditions and provide test stimuli: Perform at least one of the following operations by deepening the application simulation unit 300: S31. Simulate power supply environment of multiple distribution transformer areas: Generate at least two AC power frequency power supplies with independent phase, amplitude and harmonic characteristics to simulate the power supply environment of different distribution transformer areas; S32. Simulate dynamic electrical events: Control the AC power frequency power supply to generate at least one of the following electrical events: power outage, power restoration, voltage sag, and three-phase imbalance; S33. Perform hardware performance testing: Perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test; S40, Integrated Testing and Data Acquisition: Through the central control and evaluation unit 400, test scenarios are configured, combined test processes are automatically executed, and multi-dimensional data is collected and recorded during the test process; S50. Conduct a comprehensive evaluation: Based on the collected multi-dimensional data, the central control and evaluation unit 400 performs correlation analysis and comprehensive evaluation to generate a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of in-depth application functions of the dual-mode communication module under test.

[0058] Furthermore, in one embodiment, step S40 specifically includes: S41. Configure the test scenario according to the preset test cases. The configuration includes setting the topology of the virtual communication network, setting the interference parameters of the programmable interference injection unit, and arranging the working condition sequence of the in-depth application simulation unit. S42. The dual-mode communication simulation unit, programmable interference injection unit, and in-depth application simulation unit are automatically driven to work together to execute the combined test process; S43. Synchronously collect and record multi-dimensional data during the test process. The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit.

[0059] In summary, the dual-mode carrier module comprehensive performance application evaluation and testing system and its testing method provided by this invention construct a simulation testing platform that is hardware reconfigurable, software definable, and integrated in testing. Its core lies in "three-layer simulation and integrated control": Network topology simulation layer (dual-mode communication simulation unit 100): Standardized shielded test cabinets are used as the basic physical units. Each cabinet is equivalent to a network node, and its role (concentrator, meter, etc.) is configured by software. It is flexibly interconnected with external programmable links through the backplane bus, realizing "software definition and hardware reconfiguration" of the network topology, and perfectly supporting free networking.

[0060] The power grid environment simulation layer (Deep Application Simulation Unit 200) not only provides multiple independently adjustable power frequency power supplies to simulate multiple transformer substations, but also modulates characteristic signals on the power supplies to provide a physical basis for "phase recognition" testing. Simultaneously, the integrated programmable electronic load can directly perform charge / discharge and power consumption tests on the communication module, incorporating hardware performance into the evaluation system.

[0061] Communication Environment Simulation Layer (Programmable Interference Injection Unit 300): Provides precise and controllable interference injection capabilities, and can simulate various channel degradation scenarios from steady-state noise to transient pulses.

[0062] The integrated control and evaluation core (central control and evaluation unit 400) unifies the scheduling of the above three layers. Users can use it to set test scenarios (e.g., constructing a three-level tree network, injecting narrowband noise into the second-level link, simulating a power outage in area A, and performing high-frequency data acquisition every 15 minutes). The system automatically executes this complex scenario and simultaneously collects multi-dimensional data such as communication error rate, data acquisition success rate, power outage reporting delay, and module power consumption, and finally performs correlation analysis.

[0063] Therefore, the present invention has the following technical effects: (1) By freely combining cabinets, any field network topology can be quickly constructed. At the same time, for the first time, the collaborative simulation and testing of the three major elements of "communication interference", "power grid conditions" and "service traffic" has been realized, which can reproduce extremely complex scenarios such as "load control in a noisy channel during voltage sag", and the comprehensiveness of the test is unparalleled; (2) Through the "multi-area power supply simulation module" and "feature signal modulation" technology, a verifiable test benchmark based on real physical differences is provided for area identification and phase identification, solving the previous problem of "inaccurate measurement" for such functions. The testing of functions such as power outage reporting has also been upgraded from simple protocol verification to real event response testing with timing accuracy; (3) Compared with the existing technology, it has increased the ability to test hardware indicators such as power consumption of the module under test, and can perform high-frequency acquisition tests under interference, directly and quantitatively analyze the impact of communication environment degradation on upper-layer service indicators (such as acquisition success rate and data delay), and realize end-to-end evaluation from "channel performance" to "service experience". (4) The integrated automated testing process avoids manual equipment switching and repeated environment setup. The correlation analysis function of the central control unit can automatically locate the root cause of the problem (for example, determine whether the meter reading failure is caused by channel interference or abnormal power consumption of the module under low voltage), which greatly improves the depth and efficiency of test diagnosis.

[0064] The present invention is not limited to the description in the specification and embodiments, and thus other advantages and modifications can be readily realized by those skilled in the art. Therefore, the present invention is not limited to the specific details, representative devices and illustrated examples shown and described herein without departing from the spirit and scope of the general concept as defined by the claims and their equivalents.

Claims

1. A comprehensive performance evaluation and testing system for a dual-mode carrier module, characterized in that, include: The dual-mode communication simulation unit is used to connect the dual-mode communication module under test in a shielded environment, and simulates the roles of concentrators, energy meters and various distribution network equipment by combining software virtualization technology with physical modules, so as to build a reconfigurable virtual communication network. A programmable interference injection unit is used to inject configurable noise and interference signals into a specified communication link in the virtual communication network; wherein the noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed based on field-acquired data; The application simulation unit is connected to the dual-mode communication simulation unit to simulate the physical topology and dynamic operating conditions of the real power grid, so as to trigger and test the target application function of the dual-mode communication module under test. The advanced application simulation unit includes at least the following: The multi-zone power supply simulation module is used to generate at least two AC power frequency power supplies with independent phase, amplitude and harmonic characteristics to accurately simulate the power supply environment of different distribution transformer zones. The operating condition simulation control module is used to control the multi-zone power supply simulation module to generate at least one electrical event among power outage, power restoration, voltage sag, three-phase imbalance, and harmonic injection. The hardware performance stimulus module is used to perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test. The central control and evaluation unit is connected to the dual-mode communication simulation unit, the programmable interference injection unit, and the in-depth application simulation unit, respectively, and is used to configure test scenarios, automatically execute combined test processes, collect and record multi-dimensional data during the test process, and perform correlation analysis and comprehensive evaluation on the multi-dimensional data.

2. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in claim 1, characterized in that, The configuration test scenario includes: setting the topology of the virtual communication network in a graphical manner, controlling the interference type and intensity of the programmable interference injection unit, and setting the electrical operating condition sequence and hardware test parameters of the in-depth application simulation unit. The combined testing process includes: while applying specific communication interference, triggering changes in power grid operating conditions, and executing a high-frequency data acquisition task; The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit; The correlation analysis and comprehensive evaluation include generating a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of in-depth application functions of the dual-mode communication module under test.

3. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in claim 1, characterized in that, The combined testing process includes a high-frequency data acquisition performance testing process, as detailed below: Set the preset frequency data acquisition task cycle, start delay, and data type to be acquired; Perform the data acquisition task in a stable communication environment, and record the success rate of data reading, data integrity, and the actual latency of each acquisition. The programmable interference injection unit applies a preset interference signal to the channel. Repeatedly perform the same high-frequency acquisition task in an interference environment; By comparing and analyzing the service data before and after the application of the interference signal, the degree of reliability degradation of service functions in complex communication environments is quantitatively assessed.

4. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in claim 3, characterized in that, The central control and evaluation unit includes a data comparison and correlation analysis module, which is used to: align and automatically compare the results of the preset frequency data acquisition, the data reported by the in-depth application function, and the module power consumption data obtained from the test with the expected data that should theoretically be generated according to the test scenario configuration; and establish a correlation model between communication channel quality indicators, power grid event sequences, module hardware status, and business application performance indicators in order to analyze the root cause of performance bottlenecks.

5. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in claim 1, characterized in that, The programmable interference injection unit includes: A multi-channel signal source is used to generate standard HPLC / HRF communication signals and various preset interference signal waveforms; A high-isolation directional coupler network is used to couple the communication signal and interference signal into a designated HPLC channel or HRF channel with high forward and backward isolation. A programmable attenuation matrix, connected after the coupler network, is used to precisely and programmatically control the attenuation of the injected signal strength to simulate path loss at different distances.

6. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in claim 1, characterized in that, The hardware performance stimulus module also serves as a topology and phase recognition stimulus module, which works in conjunction with the multi-station power supply simulation module to test the automatic station recognition and phase recognition functions by executing the following process: Near the zero-crossing point of the power frequency power supplies with different phase characteristics output by the multi-zone power supply simulation module, a specific carrier characteristic signal is modulated and transmitted. The central control and evaluation unit sends a topology detection command to the dual-mode communication module under test in the virtual communication network. Each of the dual-mode communication modules under test listens to and analyzes the carrier characteristic signal. Only the module connected to the same phase power line can correctly capture the characteristic signal. The dual-mode communication module under test that has captured the characteristic signal reports the data according to the preset parent-child hierarchical relationship based on the instructions. The central control and evaluation unit automatically analyzes and verifies the accuracy of the station area attribution and phase identification based on the reported results.

7. The dual-mode carrier module comprehensive performance application evaluation and testing system as described in any one of claims 1-6, characterized in that, The dual-mode communication simulation unit is implemented by multiple physically isolated shielded test cabinets. Each shielded test cabinet has an independent power supply, communication interface and signal conditioning circuit built in, which is used to accommodate one or more dual-mode communication modules or virtual role devices under test. The shielded test cabinets are flexibly connected to external programmable attenuation links and interference injection links through a backplane bus, which allows any cabinet to be freely set as a central node, routing node or leaf node in the network through software configuration, and dynamically constructs chain, star, tree or hybrid network topologies.

8. A method for evaluating the overall performance of a dual-mode carrier module, implemented based on a system for evaluating the overall performance of a dual-mode carrier module, characterized in that... The dual-mode carrier module comprehensive performance application evaluation and testing system includes a dual-mode communication simulation unit, a programmable interference injection unit, an in-depth application simulation unit, and a central control and evaluation unit. The method includes the following steps: S10. Constructing a virtual test network: In a shielded environment, the dual-mode communication module under test is connected to the dual-mode communication simulation unit, and the dual-mode communication simulation unit is configured through software to simulate the roles of concentrator, energy meter and distribution network equipment, so as to construct a virtual communication network that can be flexibly reconfigured. S20. Injecting programmable interference: Through the programmable interference injection unit, configurable noise and interference signals are injected into a specified communication link in the virtual communication network. The noise and interference signals include background noise, narrowband interference, impulse noise, and environmental interference signals reconstructed based on field-acquired data. S30. Simulate power grid operating conditions and provide test stimuli: Perform at least one of the following operations through the advanced application simulation unit: S31. Simulate power supply environment of multiple distribution transformer areas: Generate at least two AC power frequency power supplies with independent phase, amplitude and harmonic characteristics to simulate the power supply environment of different distribution transformer areas; S32, Simulate dynamic electrical events: Control the AC power frequency power supply to generate at least one of the following electrical events: power outage, power restoration, voltage sag, and three-phase imbalance; S33. Perform hardware performance testing: Perform charging, discharging, and static / dynamic power consumption tests on the dual-mode communication module under test; S40. Perform integrated testing and data acquisition: Through the central control and evaluation unit, configure test scenarios, automatically execute combined test processes, and collect and record multi-dimensional data during the test process; S50. Conduct a comprehensive evaluation: Based on the collected multi-dimensional data, the central control and evaluation unit performs correlation analysis and comprehensive evaluation to generate a comprehensive evaluation report on the interoperability performance, protocol consistency, anti-interference performance, hardware reliability, and correctness of the in-depth application functions of the dual-mode communication module under test.

9. The method for evaluating the comprehensive performance of a dual-mode carrier module as described in claim 8, characterized in that, Step S40 specifically includes: S41. Configure the test scenario according to the preset test cases. The configuration includes setting the topology of the virtual communication network, setting the interference parameters of the programmable interference injection unit, and arranging the working condition sequence of the in-depth application simulation unit. S42. The dual-mode communication simulation unit, programmable interference injection unit, and in-depth application simulation unit are automatically driven to work together to execute the combined test process; S43. Synchronously collect and record multi-dimensional data during the test process. The multi-dimensional data includes: communication link status data, service application data, module hardware power consumption data, and electrical parameters output by the in-depth application simulation unit.

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