Multifunctional electronic box-type test tool for FTU (Feeder Terminal Unit) equipment

Abstract

The utility model discloses a multifunctional electronic box-type test tool for FTU equipment, and the tool comprises a box body, one side of the box body is provided with a plurality of test cable sockets, and the lower side of each test cable socket is provided with a dial switch; an aviation plug is arranged on the other side of the box body and is used for connecting FTU equipment; a plurality of mutual inductor modules are arranged in the box body and are in one-to-one correspondence with the dial switches; each test cable socket is electrically connected with the common end of the corresponding dial switch, the input end of each mutual inductor module is electrically connected with the first wiring end of the corresponding dial switch, and the output end of each mutual inductor module is electrically connected with one metal pin of the aviation plug; the second wiring end of each dial switch is directly and electrically connected with one metal pin of the aviation plug; according to the utility model, flexible selection of test signal transmission paths is realized, the application range is wide, and the test efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of FTU testing technology, specifically to a multifunctional electronic box-type testing fixture for FTU equipment. Background Technology

[0002] In power systems, feeder terminal units (FTUs) have remote control, telemetry, remote signaling, and fault detection functions. They communicate with the distribution automation master station, providing information on the operation status of the distribution system, various parameters, and monitoring and control information. They also execute commands issued by the distribution master station to regulate and control the distribution equipment, and are an important component of distribution network automation.

[0003] To ensure the stability and accuracy of FTU equipment in actual operation, comprehensive testing is an indispensable step. However, existing FTU equipment testing technologies have many shortcomings, especially in the access and switching of test signals, where they exhibit significant limitations.

[0004] Traditional FTU (Flying Transmission Unit) testing methods typically involve directly inputting test signals into the FTU device using fixed wiring. While simple and straightforward, this approach becomes cumbersome when faced with diverse testing requirements. Whenever testing needs change, such as requiring different current or voltage parameters or specific signal conversions, testers must reconnect different signal lines, or even replace the entire testing setup. This process is not only time-consuming and labor-intensive but also prone to wiring errors, leading to lower accuracy in test results.

[0005] In addition, traditional testing methods lack flexibility and are difficult to adapt to rapidly changing testing scenarios when faced with different testing schemes, thus limiting their applicability. Utility Model Content

[0006] The purpose of this invention is to address the problems existing in the prior art by providing a multifunctional electronic box-type test fixture for FTU equipment, which enables flexible selection of test signal transmission paths, has a wide range of applications, and high testing efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A multifunctional electronic box-type test fixture for an FTU device includes: a housing with several test cable sockets on one side, each test cable socket having a DIP switch on its underside; a connector on the other side of the housing for connecting the FTU device; several current transformer modules inside the housing, each corresponding to a DIP switch; each test cable socket is electrically connected to the common terminal of its corresponding DIP switch; the input terminal of each current transformer module is electrically connected to the first terminal of its corresponding DIP switch, and its output terminal is electrically connected to one of the metal pins of the connector; the second terminal of each DIP switch is directly electrically connected to one of the metal pins of the connector.

[0009] The test cable sockets include: A-phase current socket IA, B-phase current socket IB, C-phase current socket IC, zero-sequence current socket IO, zero-sequence voltage socket UO, incoming A-phase voltage socket UA, incoming B-phase voltage socket UB, incoming C-phase voltage socket UC, outgoing A-phase voltage socket UAS, outgoing B-phase voltage socket UBS, and outgoing C-phase voltage socket UCS.

[0010] The plurality of said DIP switches include: A-phase current DIP switch, B-phase current DIP switch, C-phase current DIP switch, zero-sequence current DIP switch, zero-sequence voltage DIP switch, incoming A-phase voltage DIP switch, incoming B-phase voltage DIP switch, incoming C-phase voltage DIP switch, outgoing A-phase voltage DIP switch, outgoing B-phase voltage DIP switch, and outgoing C-phase voltage DIP switch;

[0011] The plurality of transformer modules include: A-phase current transformer, B-phase current transformer, C-phase current transformer, zero-sequence current transformer, zero-sequence voltage transformer, incoming A-phase voltage transformer, incoming B-phase voltage transformer, incoming C-phase voltage transformer, outgoing A-phase voltage transformer, outgoing B-phase voltage transformer, and outgoing C-phase voltage transformer.

[0012] The enclosure is also equipped with a current grounding wire socket IN and a voltage grounding wire socket UN.

[0013] The enclosure is equipped with a removable top cover, and the test cable socket and the DIP switch are both located on the top cover.

[0014] The test fixture includes an internal main control board located in the enclosure, several current transformer modules are respectively located on the main control board, and the main control board is also provided with a terminal block. The current transformer modules are connected to corresponding DIP switches and aviation plugs through the terminal block.

[0015] The test cable socket has a cylindrical structure, and the test cable socket is interference-fitted to the test cable or screwed in.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By setting up DIP switches and current transformer modules, flexible selection of test signal transmission paths is achieved. The original signal can be transmitted directly for testing, or the signal can be processed by the current transformer module before testing, thereby improving the adaptability and flexibility of the test fixture.

[0018] 2. By switching the DIP switches, testers can quickly change the test configuration without replacing the entire test fixture or rewiring, which greatly improves the efficiency of testing and reduces the waiting time and error rate during the testing process.

[0019] 3. The current transformer module has the function of current or voltage transformation. Different transformation ratios or types can be selected according to the test requirements, so that the test fixture can adapt to different types of FTU equipment and various test scenarios, making it a multi-functional test platform that meets a wider range of test needs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the test fixture in the embodiments of this application;

[0022] Figure 2 This is a top view of the test fixture in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the switching circuit of the DIP switch in the embodiments of this application;

[0024] In the diagram: 1. Cabinet; 2. Test cable socket; 3. DIP switch; 4. Aviation connector. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Traditional FTU (Flying Transmission Unit) testing methods typically involve directly inputting test signals into the FTU device using fixed wiring. While simple and straightforward, this approach becomes cumbersome when faced with diverse testing requirements. Whenever testing needs change, such as requiring different current or voltage parameters or specific signal conversions, testers must reconnect different signal lines, or even replace the entire testing setup. This process is not only time-consuming and labor-intensive but also prone to wiring errors, leading to lower accuracy in test results.

[0030] In addition, traditional testing methods lack flexibility and are difficult to adapt to rapidly changing testing scenarios when faced with different testing schemes, thus limiting their applicability.

[0031] To address the above technical issues, such as Figure 1As shown in the figure, this application provides a multifunctional electronic box-type test fixture for an FTU device, including: a box 1, on one side of which are provided several test cable sockets 2, and each test cable socket 2 is provided with a DIP switch 3 on its lower side; on the other side of the box are provided a connector 4, which is used to connect the FTU device; inside the box 1 are provided several current transformer modules, which correspond one-to-one with the DIP switches 3; each test cable socket 2 is electrically connected to the common terminal of its corresponding DIP switch 3, the input terminal of each current transformer module is electrically connected to the first terminal of the corresponding DIP switch 3, and the output terminal is electrically connected to one of the metal pins of the connector 4; the second terminal of each DIP switch 3 is directly electrically connected to one of the metal pins of the connector 4.

[0032] like Figure 3 As shown, when testing is required, the test cable is connected to the test fixture through test cable socket 2. The transmission path of the test signal can be selected by toggling DIP switch 3. If DIP switch 3 is in the first position, the test signal will be directly transmitted to the FTU device through the second terminal, suitable for test scenarios that do not require signal processing. If DIP switch 3 is in the second position, the test signal will first be processed by the corresponding current transformer module, and then transmitted to the FTU device through connector 4, suitable for test scenarios requiring precise input or signal conversion.

[0033] By setting up DIP switch 3 and current transformer module, flexible selection of test signal transmission path is realized. It can directly transmit the original signal for testing, or process the signal through the current transformer module for testing, thereby improving the adaptability and flexibility of the test fixture.

[0034] By switching the DIP switches, testers can quickly change the test configuration without replacing the entire test fixture or rewiring, which greatly improves testing efficiency and reduces waiting time and error rate during the testing process.

[0035] The current transformer module has the function of converting current or voltage. Different conversion ratios or types can be selected according to the test requirements, so that the test fixture can adapt to different types of FTU equipment and various test scenarios, making it a multi-functional test platform that meets a wider range of test needs.

[0036] Furthermore, the current transformer module has an isolation function, which can protect the test equipment and the FTU under test from potential damage caused by direct electrical connection.

[0037] like Figure 2As shown, in some embodiments, a plurality of test cable sockets 2 include: A-phase current socket IA, B-phase current socket IB, C-phase current socket IC, zero-sequence current socket IO, zero-sequence voltage socket UO, incoming-side A-phase voltage socket UA, incoming-side B-phase voltage socket UB, incoming-side C-phase voltage socket UC, outgoing-side A-phase voltage socket UAS, outgoing-side B-phase voltage socket UBS, and outgoing-side C-phase voltage socket UCS. A plurality of DIP switches 3 include: A-phase current DIP switch, B-phase current DIP switch, C-phase current DIP switch, zero-sequence current DIP switch, zero-sequence voltage DIP switch, incoming-side A-phase voltage DIP switch, incoming-side B-phase voltage DIP switch, incoming-side C-phase voltage DIP switch, outgoing-side A-phase voltage DIP switch, outgoing-side B-phase voltage DIP switch, and outgoing-side C-phase voltage DIP switch. Several transformer modules include: A-phase current transformer, B-phase current transformer, C-phase current transformer, zero-sequence current transformer, zero-sequence voltage transformer, incoming A-phase voltage transformer, incoming B-phase voltage transformer, incoming C-phase voltage transformer, outgoing A-phase voltage transformer, outgoing B-phase voltage transformer, and outgoing C-phase voltage transformer.

[0038] In this embodiment, by providing a fully corresponding test cable socket 2, DIP switch 3 and transformer module, comprehensive test coverage of the phase current, voltage and zero-sequence current and voltage of the FTU equipment is ensured.

[0039] For example, the current transformer for phase A can be a current transformer with model number TR0176-4B / 50A / 10V from Hubei Tianrui Electronics Co., Ltd., and the voltage transformer for phase A can be a voltage transformer with model number TR1176-3C / 220V / 3.25V.

[0040] In some embodiments, the enclosure 1 is further provided with a current grounding socket IN and a voltage grounding socket UN to provide a reliable grounding path for current and voltage signals during the test process and to ensure test safety.

[0041] In some embodiments, the housing 1 is provided with a removable top cover, and the test cable socket 2 and the DIP switch 3 are both located on the top cover, which facilitates opening the top cover to inspect and maintain the interior of the tooling, and at the same time makes the assembly process of the test cable socket 2 and the DIP switch 3 more convenient.

[0042] In some embodiments, the test fixture includes an internal main control board located in the housing 1, several current transformer modules are respectively located on the main control board, and the main control board is also provided with a terminal block. The current transformer modules are electrically connected to the corresponding DIP switch 3 and the aviation plug 4 through the terminal block.

[0043] The main control board transmits the processed signals to the DIP switches and the aviation connectors via the terminal block. It can process the signals to be tested sequentially according to the preset test program, perform automated test operations, analyze and compare the test data, provide alarm prompts for abnormal data, and store records, thereby improving the degree of automation.

[0044] In some embodiments, the test cable socket 2 has a cylindrical structure, and the test cable socket 2 is either interference-fitted to the test cable or threaded. For test environments requiring quick insertion and removal, an interference fit can be selected; while for test scenarios requiring long-term connection, a threaded fit can be selected.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional electronic box-type test fixture for an FTU device, characterized in that, include: The enclosure (1) has several test cable sockets (2) on one side, and each test cable socket (2) has a DIP switch (3) on its lower side. The other side of the enclosure is provided with a connector (4), which is used to connect the FTU device; The housing (1) contains several current transformer modules, which correspond one-to-one with the DIP switch (3); Each of the test cable sockets (2) is electrically connected to the common terminal of its corresponding DIP switch (3), the input terminal of each current transformer module is electrically connected to the first terminal of the corresponding DIP switch (3), and the output terminal is electrically connected to one of the metal pins of the connector (4). The second terminal of each of the DIP switches (3) is directly electrically connected to one of the metal pins of the connector (4).

2. The multifunctional electronic box-type test fixture for an FTU device according to claim 1, characterized in that, Several of the test cable sockets (2) include: Phase A current socket IA, Phase B current socket IB, Phase C current socket IC, Zero sequence current socket IO, Zero sequence voltage socket UO, Incoming A phase voltage socket UA, Incoming B phase voltage socket UB, Incoming C phase voltage socket UC, Outgoing A phase voltage socket UAS, Outgoing B phase voltage socket UBS, Outgoing C phase voltage socket UCS. Several of the aforementioned DIP switches (3) include: Phase A current DIP switch, Phase B current DIP switch, Phase C current DIP switch, zero-sequence current DIP switch, zero-sequence voltage DIP switch, incoming A-phase voltage DIP switch, incoming B-phase voltage DIP switch, incoming C-phase voltage DIP switch, outgoing A-phase voltage DIP switch, outgoing B-phase voltage DIP switch, outgoing C-phase voltage DIP switch; Several of the aforementioned transformer modules include: Phase A current transformer, Phase B current transformer, Phase C current transformer, zero-sequence current transformer, zero-sequence voltage transformer, incoming A-phase voltage transformer, incoming B-phase voltage transformer, incoming C-phase voltage transformer, outgoing A-phase voltage transformer, outgoing B-phase voltage transformer, outgoing C-phase voltage transformer.

3. The multifunctional electronic box-type test fixture for an FTU device according to claim 2, characterized in that, The enclosure (1) is also provided with a current grounding socket IN and a voltage grounding socket UN.

4. The multifunctional electronic box-type test fixture for an FTU device according to claim 1, characterized in that, The housing (1) is provided with a detachable top cover, and the test cable socket (2) and the DIP switch (3) are both located on the top cover.

5. The multifunctional electronic box-type test fixture for an FTU device according to claim 1, characterized in that, The system includes an internal main control board located in the housing (1), several current transformer modules located on the main control board, and a terminal block located on the main control board. The current transformer modules are electrically connected to the corresponding DIP switches (3) and aviation plugs (4) via the terminal block.

6. The multifunctional electronic box-type test fixture for an FTU device according to claim 1, characterized in that, The test cable socket (2) is a cylindrical structure, and the test cable socket (2) is interference-fitted to the test cable or screwed together.

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