CN-121984890-A - Intelligent testing method, system and device for special transformer terminal

CN121984890ACN 121984890 ACN121984890 ACN 121984890ACN-121984890-A

Abstract

The invention discloses an intelligent test method, a system and a device for a private transformer terminal in the technical field of power equipment test, which comprise the steps of executing self-check after test equipment is electrified and started, completing automatic switching of a power supply channel, establishing communication connection with the private transformer terminal, automatically identifying a communication protocol and communication parameters, generating a test flow according to a preset test template or a user-defined script, carrying out working condition simulation and abnormal signal injection on the input end of the private transformer terminal, synchronously collecting communication response data of the private transformer terminal and comparing the communication response data with a preset threshold value to form a closed-loop evaluation result, triggering a hierarchical diagnosis flow to position a fault cause when abnormal response is detected, generating a test report and storing the test data and the communication message, updating an abnormal feature library based on a historical test result to realize test strategy self-learning.

Inventors

LIANG JUQI
WANG YAOYUE
ZHANG GUANGCHEN
ZHONG GAN
Niu Zhaowen
HONG FEI
YU JING
CHEN JIAQI
JIANG AI

Assignees

南京能瑞自动化设备股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (10)

1. The intelligent testing method of the private transformer terminal is characterized by comprising the following steps of: Powering up and starting the test equipment and completing self-checking; establishing communication connection between the test equipment and the special transformer terminal to be tested, and identifying a communication protocol and communication parameters; generating a test flow according to the identification result; executing data interaction test and working condition simulation test on the special transformer terminal according to the test flow; Collecting response data of the special transformer terminal in the test process and analyzing and judging; and outputting and storing the test result.
2. The intelligent testing method of a private transformer terminal according to claim 1, wherein the step of powering up and completing self-checking comprises: Detecting power supply states of a power taking channel and an external power supply channel of a terminal and automatically selecting the power supply channel; And detecting states of the communication interface, the power output channel and the working condition simulation channel.
3. The intelligent testing method of a private transformer terminal according to claim 1, wherein the step of identifying communication protocols and communication parameters comprises: Transmitting a detection message in a protocol format to a special transformer terminal; Analyzing frame structure characteristics, address domain characteristics and verification modes of a return message of the special transformer terminal; and determining a target communication protocol and corresponding communication parameters based on the protocol feature library matching.
4. The intelligent testing method of a private transformer terminal according to claim 3, wherein the terminal enters a learning mode when the response characteristics of the terminal cannot be matched with the protocol characteristics library; the learning mode comprises the steps of recording an interactive message sequence between a special transformer terminal and a standard master station and generating a new protocol template.
5. The intelligent testing method of a private transformer terminal according to claim 1, wherein the step of generating a test flow includes: Calling a preset test template to generate a standard test flow, or And calling the stored custom test script to generate an automatic test flow.
6. The intelligent testing method of a private transformer terminal according to claim 1, wherein the condition simulation test comprises: Analog switching value state change through programmable digital input/output channel, or And outputting abnormal time sequence signals to simulate abnormal working conditions such as signal jitter, adhesion or pulse loss.
7. The intelligent testing method of the private transformer terminal according to claim 6, wherein the response data and the response time delay fed back by the private transformer terminal through the communication interface are synchronously collected while the working condition simulation or the fault injection is performed, and the actual response result is compared with a preset abnormal response threshold value to form a quantitative evaluation result of the terminal abnormal processing capability.
8. The intelligent test method of a private transformer terminal according to claim 1, wherein when a test result that does not satisfy an expected condition is detected, a further diagnosis test flow corresponding to the test item is automatically triggered to realize a hierarchical diagnosis based on the test result.
9. An intelligent testing system for a private transformer terminal, characterized in that the intelligent testing method for implementing the private transformer terminal according to any one of claims 1-8 comprises: The test control unit is used for executing self-checking and test flow generation, communication protocol identification, working condition simulation control and test result analysis and judgment; the power management unit is used for realizing automatic switching of multiple paths of power supply inputs and supplying power to each unit; the multi-protocol communication unit is used for carrying out multi-protocol communication interaction with the special transformer terminal; The working condition simulation and fault injection unit is used for constructing a terminal input working condition and an abnormal state; The man-machine interaction unit is used for realizing test control and result display; The data storage unit is used for storing test records and test reports; the test control unit is connected with the other units respectively.
10. The intelligent testing device for the portable private transformer terminal is characterized by comprising the intelligent testing system for the private transformer terminal, which is disclosed in claim 9, and further comprising: the device comprises a shell, and a test control module, a power management module, a multi-protocol communication interface module, a working condition simulation and fault injection module, a man-machine interaction module and a data storage module which are arranged in the shell.

Description

Intelligent testing method, system and device for special transformer terminal Technical Field The invention relates to an intelligent testing method, system and device for a special transformer terminal, and belongs to the technical field of power equipment testing. Background The private transformer terminal is key equipment for collecting, monitoring and load management of private transformer user electric energy information, and has complex functions and various communication protocols (such as DL/T645, Q/GDW10376.1, DL/T698.45 protocol and the like). Currently, field commissioning, periodic maintenance or troubleshooting thereof is generally dependent on the following manner: 1. The device has strong dependence, a notebook computer, various converters and test software must be carried, wiring is complex, environmental adaptability is poor, and efficiency is low. 2. The function is single, and the hand-held device in the market can only measure basic parameters, and can not simulate the master station to carry out protocol communication test. 3. And the active test cannot be performed, namely the fault injection and abnormal working condition simulation capability is lacked, and the response performance of the terminal in an abnormal state cannot be verified. 4. The protocol compatibility is poor, and the special testing device usually only supports a single communication protocol and cannot adapt to the diversified communication requirements of different manufacturers and different types of terminals. The prior art lacks a portable testing device which has high integration level, is simple and convenient to operate, can be separated from a computer and a main station system to independently operate, and performs integrated test aiming at the characteristics of multiple protocols, multiple functions and multiple working conditions of a special transformer terminal. In addition, the existing test mode severely depends on manual experience, lacks intelligent test flow management, fault self-diagnosis and root cause analysis capability, and has test efficiency and depth to be improved. Disclosure of Invention The invention provides an intelligent testing method, system and device for a special transformer terminal, which solve the problems of complex and low efficiency, poor protocol compatibility, dependence on manpower in a testing process and lack of intelligent diagnosis and deep closed loop verification capability of the existing testing equipment. In a first aspect, an intelligent testing method for a private transformer terminal is provided, including: Powering up and starting the test equipment and completing self-checking; establishing communication connection between the test equipment and the special transformer terminal to be tested, and identifying a communication protocol and communication parameters; generating a test flow according to the identification result; executing data interaction test and working condition simulation test on the special transformer terminal according to the test flow; Collecting response data of the special transformer terminal in the test process and analyzing and judging; and outputting and storing the test result. Further, the step of powering up, starting and completing self-checking includes: Detecting power supply states of a power taking channel and an external power supply channel of a terminal and automatically selecting the power supply channel; And detecting states of the communication interface, the power output channel and the working condition simulation channel. Further, the step of identifying the communication protocol and the communication parameter includes: Transmitting a detection message in a protocol format to a special transformer terminal; Analyzing frame structure characteristics, address domain characteristics and verification modes of a return message of the special transformer terminal; and determining a target communication protocol and corresponding communication parameters based on the protocol feature library matching. Further, when the response characteristics of the terminal cannot be matched with the protocol characteristic library, entering a learning mode; the learning mode comprises the steps of recording an interactive message sequence between a special transformer terminal and a standard master station and generating a new protocol template. Further, the step of generating the test flow includes: Calling a preset test template to generate a standard test flow, or And calling the stored custom test script to generate an automatic test flow. Further, the condition simulation test includes: Analog switching value state change through programmable digital input/output channel, or And outputting abnormal time sequence signals to simulate abnormal working conditions such as signal jitter, adhesion or pulse loss. Further, when the working condition simulation or fault injection is executed, response data and response time delay fed