Testing device for generator-transformer group protection outlet tripping matrix

Abstract

The utility model relates to a testing device for a tripping matrix of a generator-transformer group protection outlet. The testing device comprises a plurality of groups of tripping outlets connected in series and LED indicating lamps. Each group of tripping outlets and the LED indicating lamps are connected in parallel; the testing device further comprises a battery, a reset button and a power switch which are arranged on the main circuit. Each LED indicating lamp is connected in parallel with a contactor; each tripping outlet is connected in parallel with a contactor coil; and each tripping outlet on the generator-transformer group protection outlet tripping matrix and the test device form a closed test loop in a hard wiring mode. Compared with the prior art, the device has the advantages of high detection efficiency, convenience in operation, low cost, safety, reliability and the like.

Description

Technical Field

[0001] This utility model relates to the field of test technology for output trip matrix, and in particular to a test device for an output trip matrix of a generator-transformer group protection. Background Technology

[0002] Transformer protection devices play a crucial role in ensuring the safe and stable operation of power systems. However, traditional methods for testing the tripping matrix of these protection devices, primarily using multimeters or relay protection testers to check each tripping point, have several shortcomings. First, the testing efficiency is low; the large number of tripping points makes individual measurement time-consuming and labor-intensive, severely impacting maintenance progress. Second, the operation is complex and labor-intensive, requiring frequent manual connection and connection of test leads and equipment replacement, which is tedious and tiring. Third, the risk of false positives and false negatives is high; wiring errors or omissions are prone to occur during manual testing, leading to inaccurate results and affecting the reliability of the protection device. Furthermore, traditional testing methods lack real-time performance, failing to provide timely feedback on the tripping status, making it difficult to detect and handle abnormalities promptly; data recording is not intuitive, relying on manual reading and recording, increasing the difficulty of result interpretation; and safety risks are high, with frequent operation near high-voltage equipment posing significant safety hazards, such as loose wiring or misoperation, potentially causing short circuits or even personal injury accidents.

[0003] Therefore, there is an urgent need to design and implement an efficient, simple, safe and reliable test device for the trip matrix of the power supply. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of the existing technology and provide a test device for the trip matrix of the generator-transformer group protection outlet.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A test device for a generator-transformer unit protection output trip matrix includes multiple sets of trip outputs and LED indicator lights connected in series; each set of trip outputs and LED indicator lights is connected in parallel; the test device also includes a battery, a reset button, and a power switch installed on the main line; a contactor is connected in parallel to each LED indicator light; a contactor coil is connected in parallel to each trip output; each trip output on the generator-transformer unit protection output trip matrix forms a closed test circuit with the test device through hard wiring.

[0007] Furthermore, the battery is a rechargeable battery; the battery is provided with a charging interface; the charging interface and the battery are connected in series to form a charging circuit.

[0008] Furthermore, the testing device is housed in a testing chamber; the testing chamber is a front-openable testing chamber.

[0009] Furthermore, the battery is a 3.7V battery.

[0010] Compared with the prior art, the present invention has the following advantages:

[0011] (1) High-efficiency detection: This utility model supports parallel detection of multiple trip points, which significantly shortens the inspection time compared with traditional methods.

[0012] (2) Intuitive display: This utility model uses LED lights to display the tripping status, which makes it convenient for testers to quickly judge the correctness of the tripping matrix. This method avoids complex signal transmission links and uses the on / off state of physical circuits to achieve reliable detection, effectively avoiding missed detection and false detection.

[0013] (3) Easy to operate: The device of this utility model has a simple structure and is easy to connect. It is suitable for testing the trip matrix of protection output of various generator-transformer groups.

[0014] (4) Low cost and high reliability: The components of this utility model are low cost, simple to maintain, and highly reliable, and can be used for a long time in actual production environments. Attached Figure Description

[0015] Figure 1 A schematic diagram of the testing device provided by this utility model.

[0016] The labels in the diagram indicate:

[0017] 1. Trip output; 2. LED indicator; 3. Battery; 4. Reset button; 5. Power switch; 6. Contactor; 7. Contactor coil; 8. Charging interface. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "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.

[0022] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] 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.

[0024] Example

[0025] like Figure 1 As shown, a test device for a generator-transformer protection output trip matrix is ​​provided. The test device includes multiple sets of trip outputs 1 and LED indicator lights 2 connected in series. Each set of trip outputs 1 and LED indicator lights 2 are connected in parallel. Each trip output on the generator-transformer protection output trip matrix forms a closed test loop with the test device through hard wiring. When a certain protection function is activated, the corresponding trip output 1 node closes, forming a circuit. The loop current directly drives the corresponding LED indicator light 2 on the test device to light up, intuitively displaying the action status of the trip output 1. This method avoids complex signal transmission links and achieves reliable detection by using the on / off state of the physical circuit.

[0026] To protect the stability of the test results and prevent misjudgment, a contactor 6 is connected in parallel to each LED indicator 2; a contactor coil 7 is connected in parallel to each trip output 1. When the test circuit is closed and drives the LED indicator 2 to light up, the corresponding current simultaneously energizes the contactor coil 7 connected to the trip output 1. After the contactor coil 7 is activated, it closes its own circuit and forms a self-locking state. Even if the trip output 1 is disconnected due to a fault or other reasons, the LED indicator 2 will continue to light up, ensuring that the test results are not affected by instantaneous circuit fluctuations or disconnections.

[0027] The testing device also includes a battery 3, a reset button 4, and a power switch 5 installed on the main circuit. For convenient subsequent testing, the operator only needs to press the reset button 4 to disconnect the self-locking circuit and the power switch 5, thereby cutting off the power to the LED indicator 2, extinguishing the LED indicator 2, and restoring the testing device to its initial state. This design simplifies the operation process and facilitates repeated testing and efficient maintenance. The battery 3 is a rechargeable battery capable of being charged; the battery 3 is equipped with a charging interface 8; the charging interface 8 and the battery 3 are connected in series to form a charging circuit; the battery 3 has a voltage of 3.7V.

[0028] The testing device is housed in a testing box; the testing box is a front-opening testing box, which allows for testing operations and maintenance of the testing device.

[0029] The testing device of this utility model achieves real-time monitoring and continuous maintenance of the trip output matrix status of the generator-transformer group protection device through the workflow of "circuit continuity detection - self-locking and holding - reset and unlocking". It directly reflects the circuit status by relying on hard wiring, effectively avoiding false detection and missed detection, significantly improving the accuracy and reliability of detection, while simplifying the operation process and making maintenance work more efficient and convenient.

[0030] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A testing device for a generator-transformer group protection output trip matrix, characterized in that, The test device includes multiple sets of trip outputs (1) and LED indicator lights (2) connected in series; each set of trip outputs (1) and LED indicator lights (2) is connected in parallel; the test device also includes a battery (3), a reset button (4) and a power switch (5) installed on the main line; a contactor (6) is connected in parallel to each LED indicator light (2); a contactor coil (7) is connected in parallel to each trip output (1); each trip output on the generator-transformer group protection trip output matrix forms a closed test circuit with the test device through hard wiring.

2. The testing device for the trip matrix of the generator-transformer group protection outlet according to claim 1, characterized in that, The battery (3) is a rechargeable battery; the battery (3) is provided with a charging interface (8); the charging interface (8) and the battery (3) are connected in series to form a charging circuit.

3. The testing device for the generator-transformer group protection output trip matrix according to claim 1, characterized in that, The testing device is housed in a testing chamber; the testing chamber is a test chamber that can be opened from the front.

4. The testing device for the generator-transformer group protection output trip matrix according to claim 1, characterized in that, The battery (3) is a 3.7V battery.

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