Simulation link-based power distribution terminal test system and method, and medium

Abstract

The invention relates to the field of power distribution monitoring, in particular to a power distribution terminal test system and method based on an analog link and a medium, and the method comprises the steps: constructing a test network through an operation device, a test device and power distribution terminal equipment; networking debugging of the test network is completed, the operation device is allowed to execute the test, and therefore it is guaranteed that all the test simulation links communicate smoothly in the test process; a testing mode is selected through an operation device, the testing mode is a manual testing mode or an automatic testing mode, the operation device sends an operation instruction to the testing device based on the selected testing mode, and the testing device completes testing of the corresponding power distribution terminal devices based on the received operation instruction; and each test device responds to the test of each power distribution terminal device connected with the test device, generates a test report and feeds back the test report to the operation device. The operation device can file and display the received test report.

Description

Technical Field

[0001] The present disclosure relates to the field of power distribution monitoring, and in particular to a power distribution terminal testing system, method, and medium based on an analog link. Background Art

[0002] With the development of smart grids and distribution automation, performance requirements for distribution terminal equipment are becoming increasingly stringent. Portable distribution testers can perform remote control, telemetry, and telesignaling testing on distribution automation terminals (such as FTUs, DTUs, and TTUs), ensuring equipment reliability and stability in various environments. These testers not only support basic remote control, telemetry, and telesignaling functions but also perform a variety of functional tests, including protection, timing, reclosing, and fault operation.

[0003] However, power distribution testers have some technical deficiencies, primarily manifested in the following aspects: Traditional power distribution testers operate on the tester's display or a networked host computer monitor. When adding data, comparing the tester's display with the terminal's LCD data requires repeated switching of viewing angles or the collaboration of two people, making operation inconvenient. Due to the immaturity of early technology and the lack of effective detection methods and tools, the practical application of power distribution automation was low, resulting in an inability to effectively handle faults and impacting power supply reliability.

[0004] Under laboratory conditions, it's impossible to accurately replicate the one-on-one manual testing between standard power distribution meters and distribution terminals, making it impossible to meet the needs of large-scale testing. Sensors are not highly accurate and lack targeted key technologies. Communication technology also has limitations in terms of real-time performance, reliability, and transmission speed. Application backend algorithms are simplistic and lack the support of big data concepts, resulting in independent and inconsistent feature parameters.

[0005] Furthermore, traditional distribution terminal testers primarily rely on manual calibration, which is labor-intensive and inefficient. While automated calibration systems have been designed and implemented, they remain inefficient overall. Existing distribution terminal testing technology also fails to comprehensively assess the terminal's fault tolerance under the influence of multiple factors, resulting in a low detection rate for quality defects and the risk of faulty equipment being connected to the grid.

[0006] These shortcomings indicate that the power distribution tester industry needs to further improve the automation and intelligence level of detection methods to optimize the overall design of devices and systems, solve the above-mentioned technical problems and improve detection efficiency and power supply reliability. Summary of the Invention

[0007] The technical problem to be solved by the present disclosure is to address the above-mentioned shortcomings and provide a distribution terminal test system, method, and medium based on an analog link to solve the problem that it is impossible to accurately reproduce the one-to-one manual detection between the distribution standard source meter and the distribution terminal under laboratory conditions and to meet the needs of large-scale testing. The present disclosure adopts the following technical solutions: In a first aspect of the present disclosure, there is provided a power distribution terminal test system based on an analog link, comprising an operating device connected to at least one test device via an analog link communication unit; An operating device, used to control the testing device to test the power distribution terminal equipment, the operating device sending a control instruction to the testing device through the analog link communication unit; A testing device, wherein the testing device is connected to at least one power distribution terminal device via a cable, and the testing device tests the power distribution terminal device based on the received control instructions and collects test data, and the testing device feeds back the test data to the operating device via the analog link communication unit.

[0008] During implementation, the operating device sends an operating instruction, which is transmitted to the test device via the analog link communication unit. The operating instruction controls the test device to output a state sequence such as voltage, current, and switch output signals to the power distribution terminal equipment. The test device collects test data from the power distribution terminal equipment and transmits it to the operating device via the analog link communication unit. The operating device, analog link communication unit, test device, cable, and power distribution terminal equipment thus form a complete test closed loop. In this disclosure, the operating device and the test device have a one-to-many relationship, and the test device and the power distribution terminal equipment have a one-to-many relationship.

[0009] Preferably, the analog link communication unit may use optical fiber as a transmission medium.

[0010] Preferably, the analog link communication unit may adopt the HDLC data link protocol, which can be used in heterogeneous networks to ensure the integrity and reliability of data transmission.

[0011] Preferably, the data transmission of the analog link communication unit takes a frame as a basic unit.

[0012] Preferably, when the test device sends data to the operating device, the test device acts as a sender and the operating device acts as a receiver; when the operating device sends data to the test device, the operating device acts as a sender and the test device acts as a receiver.

[0013] The sender divides the initial data to be transmitted into several code groups, adds an address field, a control field, a check field, a frame start flag field, and a frame end flag field to each code group to form a frame, and sends the frame to the receiver. The receiver receives the frame, removes the frame start flag field and frame end flag field from the received frame, and restores the initial data.

[0014] Preferably, the sender and the receiver maintain frame synchronization during data transmission to ensure correct identification of each field in the frame; In response to an error occurring in the transmission of data information in the analog link communication unit, the receiver detects the error and requests the sender to resend, thereby completing error correction and ensuring the accuracy of data transmission.

[0015] In a second aspect of the present disclosure, a method for testing a power distribution terminal system based on an analog link is provided, the method comprising: A test network is constructed by using an operating device, a test device, and a power distribution terminal device; the test network includes a plurality of test simulation links; each test simulation link is a path starting from the power distribution terminal device and ending at the operating device; Completing the networking debugging of the test network and allowing the operating device to perform the test, thereby ensuring smooth communication of all test simulation links during the test; Selecting a test mode through an operating device, wherein the test mode is a manual test mode or an automatic test mode, the operating device sends an operation instruction to the test device based on the selected test mode, and the test device completes the test of each corresponding power distribution terminal device based on the received operation instruction; In response to completing the test of each connected power distribution terminal device, each testing device generates a test report and feeds it back to the operating device. The operating device can archive and display the received test reports. During implementation, the testing device can assign unique address codes within the test network to each connected power distribution terminal device. The testing device then feeds back the assigned unique address codes to the operating device, thereby ensuring unique management of the power distribution terminal devices and the accuracy of the test results for each power distribution terminal device.

[0016] Preferably, completing the networking debugging of the test network and allowing the operating device to perform the test specifically includes: The test network starts networking debugging and detects whether the corresponding test devices and power distribution terminal equipment are successfully connected; In response to detecting that the corresponding test device and the power distribution terminal device are successfully connected, the power distribution terminal device sends a network connection request message to the corresponding test device; In response to the test device receiving the networking request information of the corresponding power distribution terminal device, the test device generates a unique address code based on the networking request information and feeds it back to the corresponding power distribution terminal device, and the power distribution terminal device corresponds to the unique address code; In response to detecting that all corresponding test devices and power distribution terminal equipment have been successfully connected, it is determined that the networking test is completed, and each test device sends a networking completion instruction to the operating device, allowing the operating device to execute the test.

[0017] Preferably, before constructing the test network by using the operating device, the testing device and the power distribution terminal equipment, the method further comprises: Building a solution library for the operating device, the solution library including test solutions corresponding to feeder terminal (FTU), station terminal (DTU) and distribution transformer terminal (TTU); A set value library is constructed for the operating device, wherein the set value library is formed by action set values ​​inputted through the operating device for testing corresponding power distribution terminal equipment.

[0018] Preferably, the solution library and the fixed value library are constructed for the operating device through manual input or data import.

[0019] Preferably, the test mode is selected by the operating device, and the test mode is a manual test mode or an automatic test mode. The operating device sends an operation instruction to the test device based on the selected test mode, and the test device completes the test of each corresponding power distribution terminal device based on the received operation instruction, specifically including: In response to the manual test mode being selected by the operating device, the operating device acquires a manually input test plan, the operating device issues an operating instruction to the testing device based on the manually input test plan, and the testing device directly performs a test on the power distribution terminal 50 connected thereto based on the received operating instruction and collects the test results; In response to the selection of the automatic test mode by the operating device, the operating device sends an operating instruction to the testing device to perform the automatic test. Based on the received operating instruction to perform the automatic test, the testing device selects a test solution corresponding to the power distribution terminal device from the solution library. The testing device transmits the test solution selected from the solution library to the corresponding power distribution terminal device in a single line according to the unique address code. The power distribution terminal device performs tests one by one according to the received corresponding test solution and feeds back the test results to the testing device. The unique address code facilitates the testing device to transmit the test solution to the corresponding power distribution terminal device in a single line, avoiding situations such as erroneous transmission to an inappropriate power distribution terminal device, thereby achieving independent testing of each power distribution terminal device and facilitating personalized testing of a single power distribution terminal device.

[0020] Preferably, the manually input test scheme may include actions such as AC experimental test, state sequence test, switch output test, remote control signal test, remote signal test and test result collection as selected on demand.

[0021] Preferably, the test schemes selected from the scheme library may include telemetry test, telesignaling test, remote control test and protection test.

[0022] Preferably, after each of the testing devices generates a test report and feeds it back to the operating device in response to completing the test on each of the power distribution terminal devices connected thereto, the method further includes: The operating device generates a point table corresponding to the test report based on the test report, and summarizes the point table into a point table library; the point table library is used to organize the test process of the distribution terminal test system.

[0023] Preferably, after each of the testing devices generates a test report and feeds it back to the operating device in response to completing the test on each of the power distribution terminal devices connected thereto, the method further includes: The operating device updates a report library corresponding to the test report based on the test report, and then visually displays the report library through a display screen of the operating device.

[0024] Preferably, after each of the testing devices generates a test report and feeds it back to the operating device in response to completing the test on each of the power distribution terminal devices connected thereto, the method further includes: continuing the joint debugging test.

[0025] Preferably, during the joint debugging test, the testing device sends a test signal for simulating operation to the corresponding power distribution terminal equipment based on the constant value library.

[0026] Preferably, the testing device can extract the corresponding action constants of each distribution terminal device from the constant value library as parameter theoretical values, and the testing device sends a test signal for simulating operation to the corresponding distribution terminal device based on the parameter theoretical values, thereby performing joint debugging tests on the networked testing device and distribution terminal equipment.

[0027] Joint commissioning testing refers to the coordinated testing of distribution automation terminals, including feeder terminals (FTUs), distribution units (DTUs), and distribution transformer terminals (TTUs). Distribution automation terminals also fall under the category of distribution terminal equipment. During joint commissioning testing, the theoretical values ​​of various parameters of the distribution terminal equipment are compared with the test results collected by the test equipment based on simulation operations. A test report based on the comparison results is generated and fed back to the operating device.

[0028] Preferably, the test network includes: a single test simulation link formed during the test of a single power distribution terminal device under test, or a test simulation link formed by temporary networking during the test of several power distribution terminal devices.

[0029] In a third aspect of the present disclosure, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, it controls a distribution terminal test system based on an analog link to implement a method for a distribution terminal test system based on an analog link.

[0030] Beneficial Effects of the Present Disclosure: This disclosure proposes a distribution terminal testing system, method, and medium based on an analog link. This system can cover fully automated testing of distribution terminal equipment (such as feeder terminals (FTUs), distribution terminals (DTUs), and distribution transformer terminals (TTUs)), encompassing functional testing, performance testing, communication protocol testing, and joint debugging. It also integrates powerful database functions such as a point table library, a constant value library, a solution library, and a report library.

[0031] The power distribution terminal testing system provided by this disclosure features a simple structure, with the operating and testing devices being two separate devices, offering the portability of separate equipment testing. During use, the testing device is placed near the power distribution terminal and connected to the distribution terminal via a cable. The operating and testing devices can communicate over long distances via an analog link communication module, enabling remote control and testing.

[0032] The operating device and the testing device are respectively equipped with analog link transceiver circuits corresponding to the analog link communication units. The operating device sends operating instructions to the testing device to control the state sequence of the testing device's output voltage and current, switch output signals, etc. The testing device collects terminal data of the distribution terminal equipment and feeds it back to the operating device to form a test closed loop.

[0033] The test device can be equipped with a power management module to manage charging and discharging. The module provides functions such as power level indication, remote start and shutdown, and low power consumption. It also provides battery protection, including overload protection, overvoltage protection, and undervoltage protection. If any abnormality is detected, such as excessive temperature, the power management module will immediately disconnect the battery from the charging or power-consuming device and issue an alarm. This not only prevents overcharging or over-discharging of the battery, but also enables timely identification and replacement of problematic batteries, ensuring the efficient and reliable operation of the entire battery pack.

[0034] The power distribution terminal testing system provided by this disclosure can freely switch between automatic and manual testing. When automatic testing is selected, an instruction is sent to the test device through the operating device. The test device selects a test plan (including telemetry testing, telesignaling testing, remote control testing, and protection testing) corresponding to the power distribution terminal equipment from the plan library and sends it to the power distribution terminal equipment through a single line. During the test, the power distribution terminal equipment performs tests one by one according to the test plan instructions and returns the test results to the test device to form a test report.

[0035] The present disclosure also features a joint debugging function. After testing a single power distribution terminal device, a joint debugging test can be selected to perform joint debugging of three devices. During the joint debugging process, the test device extracts the operating values ​​of each device from a fixed value library as the theoretical parameter values, simulates system operation, and sends test signals to perform joint debugging of the networked power distribution terminal devices. The test device compares the theoretical values ​​of the power distribution terminal device with the values ​​collected during the simulated operation and generates a test report based on the comparison results.

[0036] Compared with the prior art, the present disclosure has the following advantages: (A) Remote control: The test device can be placed close to the power distribution terminal equipment. The test device can be equipped with interfaces such as banana sockets and aviation sockets, which can quickly connect to standard power distribution terminal equipment and is also compatible with non-standard power distribution terminal equipment. The operating device can be set in the control room for remote control testing.

[0037] (B) Compatibility: It not only meets the requirements of standard FTU and DTU interval testing, but can also be used to test conventional automation terminals.

[0038] (C) Easy to operate: The aviation plug-in interface can be used for easy plugging and unplugging, avoiding incorrect wiring.

[0039] (D) Automation: Automated testing can be performed with one click, and a report is generated upon completion of the test. This standardizes the testing process and reduces operator errors.

[0040] (E) Portability: A lightweight aluminum shell can be used to further reduce the product size and weight, making it easier to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure.

[0042] Figure 1 This is a structural diagram of a power distribution terminal testing system based on an analog link in Example 1 of the present disclosure.

[0043] Figure 2 This is a schematic diagram of a power distribution terminal test system and power distribution terminal equipment networking based on an analog link in Example 1 of the present disclosure.

[0044] Figure 3 This is a flow chart of a power distribution terminal testing method based on a simulated link in embodiment 2 of the present disclosure. Figure 1 .

[0045] Figure 4 This is a flow chart of a power distribution terminal testing method based on a simulated link in embodiment 2 of the present disclosure. Figure 2Among them, S5, S6, and S7 are all optional and there is no necessary order between them. DETAILED DESCRIPTION

[0046] The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0047] The following detailed descriptions are all exemplary descriptions and are intended to provide further detailed descriptions of the present disclosure. Unless otherwise specified, all technical terms used in the present disclosure have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure.

[0048] Example 1: like Figure 1 、 Figure 2 As shown, the present disclosure provides a power distribution terminal test system based on an analog link, comprising an operating device 10, wherein the operating device 10 is connected to at least one test device 30 via an analog link communication unit 20; An operating device 10 is used to control the testing device 30 to test the power distribution terminal equipment 50, and the operating device 10 sends a control instruction to the testing device 30 through the analog link communication unit 20; The testing device 30 is connected to at least one power distribution terminal device 50 via a cable 40. The testing device 30 tests the power distribution terminal device 50 based on the received control instructions and collects test data. The testing device 30 feeds back the test data to the operating device 10 via the analog link communication unit 20.

[0049] During implementation, the operating device 10 sends an operating instruction, which is transmitted to the test device 30 via the simulated link communication unit 20. The operating instruction controls the test device 30 to output a state sequence such as voltage, current, and switching output signals to the power distribution terminal equipment 50. The test device 30 collects test data from the power distribution terminal equipment 50 and transmits it to the operating device 10 via the simulated link communication unit 20. The operating device 10, simulated link communication unit 20, test device 30, cable 40, and power distribution terminal equipment 50 thus form a complete test closed loop.

[0050] In a specific implementation, the analog link communication unit 20 may use optical fiber as a transmission medium.

[0051] In a specific embodiment, the analog link communication unit 20 may adopt the HDLC data link protocol, which can be used in heterogeneous networks to ensure the integrity and reliability of data transmission.

[0052] In a specific implementation manner, the data transmission of the analog link communication unit 20 takes a frame as a basic unit.

[0053] In a specific embodiment, when the test device 30 sends data to the operating device 10, the test device 30 acts as a sender and the operating device 10 acts as a receiver; when the operating device 10 sends data to the test device 30, the operating device 10 acts as a sender and the test device 30 acts as a receiver.

[0054] The sender divides the initial data to be transmitted into several code groups, adds an address field, a control field, a check field, a frame start flag field, and a frame end flag field to each code group to form a frame, and sends the frame to the receiver. The receiver receives the frame, removes the frame start flag field and frame end flag field from the received frame, and restores the initial data.

[0055] In a specific embodiment, the sender and the receiver maintain frame synchronization during data transmission to ensure correct identification of each field in the frame; In response to an error occurring in the transmission of data information in the analog link communication unit 20, the receiver detects the error and requests the sender to resend, thereby completing error correction and ensuring the accuracy of data transmission.

[0056] In a specific embodiment, the operating device 10 includes a display module 11, an operating module 12, an indication module 13, and a first transceiver module 14. The display module 11 can provide the user with a function for viewing operations and data related to the power distribution terminal test system. The operating module 12 can cooperate with various modules to control the test work of the test device 30, etc. The indication module 13 can provide the user with instructional operations such as execution input and selection, thereby controlling the test execution. The first transceiver module 14 can serve as a medium for connecting the operating device 10 with the analog link communication unit 20.

[0057] In one specific embodiment, the test device 30 includes a power management module 31, a control module 32, a test module 33, and a second transceiver module 34. The power management module 31 can provide power, voltage, current, and other management functions for the test device 30. The control module 32 can control the testing of the power distribution terminal device 50 according to the operating instructions of the operating device 10. The test module 33 can directly test the power distribution terminal device 50 under the control of the control module 32. The second transceiver module 34 can serve as a medium for connecting the test device 30 with the analog link communication unit 20.

[0058] In a specific implementation, the second transceiver module 34 and the first transceiver module 14 are connected via the analog link communication unit 20 .

[0059] In a specific implementation, the test module 33 and the power distribution terminal device 50 are connected via the cable 40 .

[0060] In a specific implementation, the second transceiver module 34 and the first transceiver module 14 are preferably analog link transceiver circuits corresponding to the analog link communication unit 20 .

[0061] In a specific implementation, the test module 33 may include an equipment monitoring board, an analog output board, a switch input and output board, a simulated circuit breaker, and a simulated terminal.

[0062] In a specific embodiment, the device monitoring board is used to monitor the power switch status, power status, etc. of the power management module 31.

[0063] In one specific embodiment, the analog output board includes a voltage amplifier circuit and a current amplifier circuit, which are used to output analog test signals to the power distribution terminal equipment 50. The analog test signals include 4 0-220V / 30VA voltages and 4 0-10A / 60VA signals.

[0064] In a specific implementation, the switch input and output board is used for switch signal acquisition and switch signal output.

[0065] In one specific embodiment, a simulated circuit breaker is used to simulate the tripping and closing actions of a high-voltage circuit breaker to complete relay protection tripping and closing tests. This can be used to test relay protection devices or complete relay protection panels in power systems. The simulated circuit breaker uses electronic components to simulate the functions of a real pole-mounted circuit breaker, thereby capturing the output actions of the distribution terminal equipment 50 and providing feedback on the current switch status. The simulated circuit breaker also has both manual and manual opening functions, making it easier to conduct terminal opening and closing tests, as well as protective output operation tests.

[0066] In a specific embodiment, the simulation terminal can use a power relay to simulate the opening and closing of the distribution terminal equipment 50 and the energy storage outlet, and can operate synchronously with the simulation circuit breaker, and detect the function of the pole terminal while detecting the distribution terminal equipment 50.

[0067] In a specific embodiment, the switch signal acquisition circuit can be used to detect and acquire switch signals (usually binary 0 or 1), can collect switch signals through a photoelectric coupler, can be configured with more than 8 switch acquisition interfaces, and can be used for collecting status quantities of pole-mounted circuit breakers; In one specific embodiment, the switch signal output circuit can be used to convert digital signals (e.g., 0 or 1) within the control module 32 into signals that can be recognized and responded to by external devices such as the operating device 10 and the power distribution terminal equipment 50. The switch signal output circuit can provide internal and external isolation and increase driving capability. A solid-state relay can be used as the core component of the switch signal output circuit, configured with 8 channels. This can meet the needs of collecting four state quantities at the feeder terminal (FTU): open / close position, no energy stored, and low pressure lockout, as well as seven state quantities at the station terminal (DTU).

[0068] Example 2: like Figure 3 、 Figure 4 As shown, embodiment 2 of the present disclosure provides a method for testing a power distribution terminal system based on an analog link, the method comprising: S1 constructs a test network by using the operating device 10, the test device 30 and the power distribution terminal device 50; the test network includes a plurality of test simulation links; each test simulation link is a path starting from the power distribution terminal device 50 and ending at the operating device 10; S2 completes the network debugging of the test network and allows the operating device 10 to perform the test, thereby ensuring that all test simulation links communicate smoothly during the test; S3: selecting a test mode through the operating device 10, wherein the test mode is a manual test mode or an automatic test mode. The operating device 10 sends an operation instruction to the testing device 30 based on the selected test mode, and the testing device 30 completes the test of each corresponding power distribution terminal device 50 based on the received operation instruction. S4: Each of the test devices 30 generates a test report in response to having completed testing of each of the power distribution terminal devices 50 connected thereto, and feeds it back to the operating device 10. The operating device 10 can archive and display the received test report. During implementation, the test device 30 can assign a unique address code in the test network to each of the power distribution terminal devices 50 connected thereto, and the test device 30 feeds back each of the assigned unique address codes to the operating device 10, thereby ensuring unique management of the power distribution terminal devices 50 and the accuracy of the test results of each of the power distribution terminal devices 50.

[0069] It can be understood from the accompanying drawings that each test simulation link is a path connecting the corresponding power distribution terminal device 50, the test device 30 and the operating device 10. The test simulation link is a path with the power distribution terminal device 50 as the starting point, the test device 30 as the path point and the operating device 10 as the end point. Figure 2 , it can be known that there is a feasible path from each power distribution terminal device 50 to the operating device 10, which can be used as a test simulation link.

[0070] In a specific embodiment, the step S2 completes the network debugging of the test network and allows the operating device 10 to perform the test, specifically including: S21 The test network starts networking debugging and detects whether the corresponding test device 30 and power distribution terminal equipment 50 are connected successfully; S22: In response to detecting that the corresponding test device 30 and the power distribution terminal device 50 are successfully connected, the power distribution terminal device 50 sends a network connection request message to the corresponding test device 30; S23: In response to the test device 30 receiving the network connection request information of the corresponding power distribution terminal device 50, the test device 30 generates a unique address code based on the network connection request information and feeds it back to the corresponding power distribution terminal device 50, and the power distribution terminal device 50 corresponds to the unique address code; In response to detecting that all corresponding test devices 30 and power distribution terminal equipment 50 have been successfully connected, it is determined that the networking test is completed, and each test device 30 sends a networking completion instruction to the operating device 10, allowing the operating device 10 to perform the test.

[0071] In a specific embodiment, before the test network is constructed by the operating device 10, the testing device 30 and the power distribution terminal equipment 50 in step S1, the method further includes: Building a solution library for the operating device 10, the solution library including test solutions corresponding to feeder terminal (FTU), station terminal (DTU) and distribution transformer terminal (TTU); A set value library is constructed for the operating device 10 , and the set value library is formed by action set values ​​inputted through the operating device 10 for testing corresponding power distribution terminal equipment 50 .

[0072] In a specific embodiment, the solution library and the fixed value library are constructed for the operating device 10 by manual input or data import.

[0073] In a specific embodiment, the S3 selects a test mode through the operating device 10, and the test mode is a manual test mode or an automatic test mode. The operating device 10 sends an operation instruction to the testing device 30 based on the selected test mode. The testing device 30 completes the test of each corresponding power distribution terminal device 50 based on the received operation instruction, specifically including: In response to the manual test mode being selected by the operating device 10, the operating device 10 obtains the manually input test plan, and issues an operation instruction to the testing device 30 based on the manually input test plan. The testing device 30 directly performs a test on the power distribution terminal 50 connected thereto based on the received operation instruction and collects the test results. In response to the selection of the automatic test mode by the operating device 10, the operating device 10 sends an operating instruction to the testing device 30 to perform the automatic test. The testing device 30 selects a test solution corresponding to the power distribution terminal device 50 from the solution library based on the received operating instruction to perform the automatic test. The testing device 30 sends the test solution selected from the solution library to the corresponding power distribution terminal device 50 via a single line according to the unique address code. The power distribution terminal device 50 performs tests one by one according to the received corresponding test solution and feeds back the test results to the testing device 30. The unique address code facilitates the testing device 30 to send the test solution to the corresponding power distribution terminal device 50 via a single line, avoiding situations such as mistakenly sending the test solution to an inappropriate power distribution terminal device 50, thereby achieving independent testing of each power distribution terminal device 50 and facilitating personalized testing of a single power distribution terminal device 50.

[0074] In a specific embodiment, in S31, the manually input test plan may include actions such as AC experimental test, state sequence test, switch output test, remote control signal test, remote signal test and test result collection as required.

[0075] In a specific implementation, in S32, the test scheme selected from the scheme library may include telemetry test, telesignaling test, remote control test and protection test.

[0076] In a specific embodiment, after each of the testing devices 30 generates a test report in response to completing the test of each of the power distribution terminal devices 50 connected thereto in S4 and feeds it back to the operating device 10, the method further includes: S5: The operating device 10 generates a point table corresponding to the test report based on the test report, and summarizes the point table into a point table library; the point table library is used to organize the test process of the distribution terminal test system.

[0077] In a specific embodiment, after each of the testing devices 30 generates a test report in response to completing the test of each of the power distribution terminal devices 50 connected thereto in S4 and feeds it back to the operating device 10, the method further includes: S6: The operating device 10 updates the report library corresponding to the test report based on the test report, and then visually displays the report library through the display screen of the operating device 10.

[0078] In a specific embodiment, after each of the test devices 30 generates a test report and feeds it back to the operating device 10 in response to completing the test of each of the power distribution terminal devices 50 connected thereto in S4, the method further includes: S7 continuing the joint debugging test.

[0079] In a specific embodiment, during the joint debugging test, the testing device 30 sends a test signal for simulating operation to the corresponding power distribution terminal equipment 50 based on the constant value library.

[0080] Joint commissioning testing refers to the coordinated testing of distribution automation terminals, including feeder terminals (FTUs), distribution terminals (DTUs), and distribution transformer terminals (TTUs). Distribution automation terminals also belong to the category of distribution terminal equipment 50.

[0081] It can be understood that joint debugging and testing of distribution automation terminals refers to the process of coordinated debugging of various intelligent terminal devices within the distribution automation system, ensuring that all devices can work together to implement functions such as data collection, monitoring, and control, thereby improving the operating efficiency and reliability of the distribution system. Distribution automation terminals include feeder terminals (FTUs), distribution terminals (DTUs), and distribution transformer terminals (TTUs), each playing a vital role in the distribution network. Joint debugging can verify that the functions and performance of these distribution terminal devices 50 meet design requirements, ensuring the safe and stable operation of the distribution network system.

[0082] In one specific embodiment, the test device 30 can extract the corresponding action settings of each power distribution terminal device 50 from the setting library as the parameter theoretical values. Based on the parameter theoretical values, the test device 30 sends a test signal for simulated operation to the corresponding power distribution terminal device 50, thereby performing a joint debugging test on the networked test device 30 and power distribution terminal device 50. During the joint debugging test, the theoretical values ​​of each parameter of the power distribution terminal device 50 are compared with the test results collected by the test device 30 based on the simulated operation, and a test report is generated based on the comparison results and fed back to the operating device 10.

[0083] In a specific embodiment, the test network includes: a single test simulation link formed during the test of a single power distribution terminal device 50 under test, or a test simulation link formed by temporary networking during the test of several power distribution terminal devices 50.

[0084] Example 3: Embodiment 3 of the present disclosure provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the analog link-based power distribution terminal test system described in embodiment 1 is controlled to implement the method described in embodiment 2.

[0085] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules or other data). Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0086] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0087] In summary, the distribution terminal test system, method and medium based on the analog link provided by Examples 1-3 of the present disclosure can cover fully automated testing of distribution terminal equipment (such as feeder terminals (FTU), station terminals (DTU) and distribution transformer terminals (TTU)), covering functional testing, performance testing, communication protocol testing and joint debugging testing. At the same time, it can also integrate powerful database functions such as point table library, constant value library, solution library, and report library. The distribution terminal test system provided by the present disclosure has a simple structure, and the operating device and the test device are two independent devices, which have the portability of split equipment testing. When in use, the test device is placed close to the distribution terminal and connected to the distribution terminal equipment through a cable, and the operating device and the test device can transmit data over a long distance through the analog link communication module to realize the remote control operation test function.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them. Although the present disclosure has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present disclosure should be included in the scope of protection of the claims of the present disclosure.

Claims

1. A power distribution terminal test system based on an analog link, characterized in that: The invention comprises an operating device (10), wherein the operating device (10) is connected to at least one testing device (30) via an analog link communication unit (20); An operating device (10) is used to control the testing device (30) to test the power distribution terminal equipment (50), and the operating device (10) sends a control instruction to the testing device (30) through the analog link communication unit (20); A test device (30) is connected to at least one power distribution terminal device (50) via a cable (40); the test device (30) tests the power distribution terminal device (50) based on a received control instruction and collects test data; the test device (30) feeds the test data back to the operating device (10) via the analog link communication unit (20).

2. The power distribution terminal test system based on the analog link according to claim 1, characterized in that: The analog link communication unit (20) uses optical fiber as a transmission medium; The analog link communication unit (20) adopts the HDLC data link protocol.

3. The power distribution terminal test system based on analog link according to claim 1, characterized in that: The data transmission of the analog link communication unit (20) takes a frame as a basic unit.

4. The method for the power distribution terminal testing system based on the analog link according to any one of claims 1 to 3, characterized in that: The method comprises: A test network is constructed by using an operating device (10), a test device (30) and a power distribution terminal device (50); the test network includes a plurality of test simulation links; each test simulation link is a path starting from the power distribution terminal device (50) and ending at the operating device (10); completing the networking debugging of the test network and allowing the operating device (10) to perform the test; A test mode is selected through an operating device (10), the test mode being a manual test mode or an automatic test mode. The operating device (10) sends an operation instruction to the test device (30) based on the selected test mode, and the test device (30) completes the test of each corresponding power distribution terminal device (50) based on the received operation instruction. In response to having completed the test on each of the power distribution terminal devices (50) connected thereto, each of the test devices (30) generates a test report and feeds it back to the operating device (10).

5. The method according to claim 4, wherein The completion of the network debugging of the test network and the allowing of the operating device (10) to perform the test specifically include: The test network starts networking debugging and respectively detects whether the corresponding test device (30) and power distribution terminal equipment (50) are successfully connected; In response to detecting that the corresponding test device (30) and the power distribution terminal device (50) are successfully connected, the power distribution terminal device (50) sends a network connection request message to the corresponding test device (30); In response to the test device (30) receiving networking request information from the corresponding power distribution terminal device (50), the test device (30) generates a unique address code based on the networking request information and feeds it back to the corresponding power distribution terminal device (50), and the power distribution terminal device (50) corresponds to the unique address code; In response to detecting that all corresponding test devices (30) and power distribution terminal equipment (50) have been successfully connected, it is determined that the networking test is completed, and each test device (30) sends a networking completion instruction to the operating device (10) to allow the operating device (10) to perform the test.

6. The method according to claim 5, wherein Before constructing the test network by using the operating device (10), the testing device (30) and the power distribution terminal equipment (50), the method further comprises: Constructing a solution library for the operating device (10), wherein the solution library includes test solutions corresponding to feeder terminals, station terminals, and distribution transformer terminals; A fixed value library is constructed for the operating device (10), wherein the fixed value library is formed by action fixed values ​​inputted through the operating device (10) for testing corresponding power distribution terminal equipment (50).

7. The method according to claim 6, wherein The operating device (10) selects a test mode, wherein the test mode is a manual test mode or an automatic test mode. The operating device (10) sends an operation instruction to the test device (30) based on the selected test mode. The test device (30) completes the test of each corresponding power distribution terminal device (50) based on the received operation instruction. Specifically, the test mode includes: In response to the manual test mode being selected by the operating device (10), the operating device (10) obtains a manually input test plan, and the operating device (10) issues an operation instruction to the test device (30) based on the manually input test plan. The test device (30) directly performs a test on the power distribution terminal 50 connected thereto based on the received operation instruction and collects the test results; In response to the automatic test mode being selected by the operating device (10), the operating device (10) sends an operating instruction for executing the automatic test to the testing device (30). The testing device (30) selects a test scheme corresponding to the power distribution terminal device (50) from the scheme library based on the received operating instruction for executing the automatic test. The testing device (30) sends the test scheme selected from the scheme library to the corresponding power distribution terminal device (50) based on a unique address coding single line. The power distribution terminal device (50) performs tests one by one according to the received corresponding test schemes and feeds back the test results to the testing device (30).

8. The method according to claim 4, wherein After each of the test devices (30) generates a test report in response to having completed the test on each of the power distribution terminal devices (50) connected thereto and feeds the report back to the operating device (10), the method further includes: The operating device (10) generates a point table corresponding to the test report based on the test report, and summarizes the point table into a point table library; the point table library is used to organize the test process of the distribution terminal test system.

9. The method according to claim 4, wherein After each of the test devices (30) generates a test report in response to having completed the test on each of the power distribution terminal devices (50) connected thereto and feeds the report back to the operating device (10), the method further includes: The operating device (10) updates a report library corresponding to the test report based on the test report, and then visually displays the report library through a display screen of the operating device (10).

10. The method according to claim 6, wherein After each of the test devices (30) generates a test report in response to having completed the test on each of the power distribution terminal devices (50) connected thereto and feeds the report back to the operating device (10), the method further includes: The joint debugging test is continued; during the joint debugging test, the testing device (30) sends a test signal for simulating operation to the corresponding power distribution terminal equipment (50) based on the fixed value library.

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