Integrated protection device loop verification bench

Abstract

The utility model discloses an integrated protection device loop calibration table, belongs to the technical field of integrated protection devices, and solves the problems that debugging of an existing integrated protection device is time-consuming and labor-consuming, and whether internal signals of the integrated protection device are stably output or not cannot be visually known. Comprising an alternating current power supply, a rectification circuit, a filter circuit, a short circuit protection circuit and a verification circuit which are connected in sequence, the verification circuit is provided with an S-end verification circuit and a K-end verification circuit, the S-end verification circuit of the verification circuit is provided with a plurality of S terminals, and two ends of each S terminal are respectively connected with a detection switch and a detection lamp. All the detection switches are connected to the positive electrode circuit, and the detection lamps are connected to the negative electrode circuit. Whether the comprehensive protection device is used normally or not can be observed directly, all operation parameters can be set in advance, the debugging time of the comprehensive protection device is effectively shortened, and field installation of the comprehensive protection device is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of comprehensive protection devices, and in particular relates to a circuit calibration platform for a comprehensive protection device. Background Art

[0002] Integrated protection devices offer superior protection, control, and diagnostic capabilities. They can collect and process a wealth of data in a timely manner. This data not only enables comprehensive analysis of the power system but also identifies potential hazards, enabling preventive measures and improving automation. The overall device's safety, speed, sensitivity, and selectivity are crucial to the power system.

[0003] Current work is placing higher demands on the entire power system, requiring it to not only ensure stable system operation but also meet user power supply needs. The power system will rapidly develop towards automation. Comprehensive protection devices require staff to have a deep understanding of the system so that they can select and adjust the specific parameters of the device according to the operating environment, which is time-consuming and labor-intensive. Poorly debugged comprehensive protection devices are prone to failure, directly affecting the production of downstream users. Determining the specific failure of the comprehensive protection device requires a considerable amount of time, patience, and professional skills for maintenance personnel, which greatly affects the efficiency of the production process and causes unnecessary losses. Utility Model Content

[0004] The utility model provides a comprehensive protection device loop calibration station to solve the problems that the current comprehensive protection device debugging is time-consuming and labor-intensive, and it is impossible to intuitively understand whether the internal signal of the comprehensive protection device is stably output.

[0005] The technical solution of the utility model is: a comprehensive protection device loop verification station, characterized in that it includes an AC power supply, a rectifier circuit, a filter circuit, a short-circuit protection circuit and a verification circuit connected in sequence, and the verification circuit is provided with an S-end verification circuit and a K-end verification circuit.

[0006] The S-terminal verification circuit is provided with multiple S-terminals, each of which is connected to a detection switch and a detection light at both ends. All detection switches are connected to the positive end of the verification circuit, and all detection lights are connected to the negative end of the verification circuit.

[0007] The K-end verification circuit is provided with switches K1 and K2, and also includes: LKM+ terminal, LKM- terminal, KTI terminal, KT0 terminal, KHI terminal, KH0 terminal, T1.1 terminal, T1.2 terminal, T2.1 terminal, T2.2 terminal, T3.1 terminal, and T3.2 terminal. The opening circuit of the verification circuit starts from the positive terminal, and is connected in sequence with the switch K1, KTI terminal, KT0 terminal, and the first signal light LR, and is finally connected to the negative terminal of the verification circuit. The circuit composed of the T1.1 terminal and T1.2 terminal, and the circuit composed of the T2.1 terminal and T2.2 terminal are both connected to the opening circuit; the closing circuit of the verification circuit starts from the positive terminal, and is connected in sequence with the switch K2, KHI terminal, KH0 terminal, and the second signal light HR, and is finally connected to the negative terminal of the verification circuit. The circuit composed of the T3.1 terminal and T3.2 terminal is connected to the opening circuit.

[0008] As a further improvement of the present invention, an input signal light is connected between the rectifier circuit and the AC power supply to determine whether the rectifier circuit is working normally.

[0009] As a further improvement of the present invention, an output signal light is connected between the short-circuit protection circuit and the verification circuit to determine whether a DC current can be normally input to the verification circuit.

[0010] As a further improvement of the present invention, a switch is connected between the rectifier circuit and the input signal lamp.

[0011] The beneficial effects of the present invention are as follows: the present invention simulates the actual conditions on site in advance by setting up the circuit, performs simulation experiments on the signal circuit, control circuit, AC voltage, and AC current analog panels, judges the performance of each control panel, and judges the quality of the device in a relatively short time; at the same time, the comprehensive protection device can be debugged in advance and all operating parameters can be set in advance, effectively shortening the debugging time of the comprehensive protection device and facilitating the on-site installation of the comprehensive protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the connection of the verification circuit of the utility model;

[0013] Figure 2 This is a schematic diagram of the overall circuit connection of the utility model.

[0014] In the figure: 1-rectifier circuit, 2-filter circuit, 3-short-circuit protection circuit, 4-calibration circuit, 5-AC power supply, 6-input signal light, 7-output signal light, 8-switch, 9-detection switch, 10-detection light, LR-first signal light, HR-second signal light. DETAILED DESCRIPTION

[0015] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementations.

[0016] like Figure 1 — Figure 2 As shown, a circuit verification station for a comprehensive protection device is characterized by comprising an AC power supply 5, a rectifier circuit 1, a filter circuit 2, a short-circuit protection circuit 3 and a verification circuit 4 connected in sequence, wherein the verification circuit 4 is provided with an S-end verification circuit and a K-end verification circuit;

[0017] The S-terminal verification circuit is provided with a plurality of S terminals, each of which is connected to a detection switch 9 and a detection light 10 at both ends. All detection switches 9 are connected to the positive end of the verification circuit 4, and all detection lights 10 are connected to the negative end of the verification circuit 4.

[0018] The K-end verification circuit is provided with switches K1 and K2, and also includes: LKM+ terminal, LKM- terminal, KTI terminal, KT0 terminal, KHI terminal, KH0 terminal, T1.1 terminal, T1.2 terminal, T2.1 terminal, T2.2 terminal, T3.1 terminal, and T3.2 terminal. The opening circuit of the verification circuit 4 starts from the positive terminal, and is connected in sequence with the switch K1, KTI terminal, KT0 terminal, and the first signal light LR, and is finally connected to the negative terminal of the verification circuit 4. The circuit composed of the T1.1 terminal and T1.2 terminal, and the circuit composed of the T2.1 terminal and T2.2 terminal are both connected to the opening circuit; the closing circuit of the verification circuit 4 starts from the positive terminal, and is connected in sequence with the switch K2, KHI terminal, KH0 terminal, and the second signal light HR, and is finally connected to the negative terminal of the verification circuit 4. The circuit composed of the T3.1 terminal and T3.2 terminal is connected to the opening circuit.

[0019] An input signal light 6 is connected between the rectifier circuit 1 and the filter circuit 2 to determine whether the rectifier circuit 1 is working normally.

[0020] An output signal light 7 is connected between the short-circuit protection circuit 3 and the verification circuit 4 to determine whether a DC current can be normally output to the verification circuit 4 .

[0021] A switch 8 is connected between the rectifier circuit 1 and the AC circuit 5 .

[0022] When in use, turn on the switch QS of the AC power supply 5, so that the input signal light and the output signal light are lit at the same time, and make sure that the rectifier circuit 1, the filter circuit 2, and the short-circuit protection circuit 3 are working normally, so that the AC 220V current is converted and output into a DC 220V current. The current is connected to the S-end verification circuit and the K-end verification circuit of the verification circuit 4 through the positive end, and finally transmitted to the negative end to form a loop. The S end is responsible for collecting signals, and the K end is responsible for outputting signals; turn on the detection switches 9 on the S end in turn, and check whether the corresponding detection lights 10 are lit in turn. Every time a light is lit, enter the "open-in quantity" status view table of the comprehensive protection device to check whether the corresponding open-in quantity node changes from "open" to "closed". If it corresponds, it means that the node is intact and the corresponding functions in the comprehensive protection device are normal. Check in advance whether the comprehensive protection device is operating normally. When using the K terminal, connect a filter to the loop formed by the LKM+ terminal and the LKM- terminal to prevent the current input from not meeting the requirements and damaging the device; turn on the switch K1, the current is input from KTI through the switch K1, and then output from KT0 and transmit the current to the first signal light LR. The first signal light LR is normally lit, indicating that the node of the opening circuit is intact; turn on the switch K2, the current is input from KHI through K2, and then output from KH0 and transmit the current to the second signal light HR. The second signal light HR is normally lit, indicating that the node of the closing circuit is intact; after confirming that the main line connection in the K terminal is complete, connect the comprehensive protection device and adjust the comprehensive protection device to enter the "debugging state". Click "Remote Control Trip". If the first signal light LR is on, it means the remote control trip circuit (the circuit composed of terminals T1.1 and T1.2) is working normally. Clear the data and click "Protection Trip". If the first signal light LR is on, it means the protection trip circuit (the circuit composed of terminals T2.1 and T2.2) is working normally. Clear the data and click "Remote Control Closing". If the second signal light HR is on, it means the remote control closing circuit (the circuit composed of terminals T3.1 and T3.2) is working normally. After confirming that the entire comprehensive protection device is operating normally, set the corresponding operating parameters according to the actual situation and put the comprehensive protection device into use.

Claims

1. A comprehensive protection device circuit calibration station, characterized by: The device comprises an AC power supply (5), a rectifier circuit (1), a filter circuit (2), a short-circuit protection circuit (3) and a calibration circuit (4) connected in sequence, wherein the calibration circuit (4) is provided with an S-end calibration circuit and a K-end calibration circuit; The S-terminal verification circuit is provided with a plurality of S terminals, and each of the two ends of the S terminal is respectively connected to a detection switch (9) and a detection lamp (10), all the detection switches (9) are connected to the positive terminal of the verification circuit (4), and the detection lamps (10) are connected to the negative terminal of the verification circuit (4); The K-end verification circuit is provided with switches K1 and K2, and also includes: LKM+ terminal, LKM- terminal, KTI terminal, KT0 terminal, KHI terminal, KH0 terminal, T1.1 terminal, T1.2 terminal, T2.1 terminal, T2.2 terminal, T3.1 terminal, T3.2 terminal. The opening circuit of the verification circuit (4) starts from the positive terminal, is connected in sequence with the switch K1, KTI terminal, KT0 terminal, and the first signal lamp LR, and is finally connected to the negative terminal of the verification circuit (4). The circuit composed of the T1.1 terminal and the T1.2 terminal, and the circuit composed of the T2.1 terminal and the T2.2 terminal are both connected to the opening circuit; the closing circuit of the verification circuit (4) starts from the positive terminal, is connected in sequence with the switch K2, KHI terminal, KH0 terminal, and the second signal lamp HR, and is finally connected to the negative terminal of the verification circuit (4). The circuit composed of the T3.1 terminal and the T3.2 terminal is connected to the opening circuit.

2. A comprehensive protection device circuit verification station according to claim 1, characterized in that: An input signal lamp (6) is connected between the rectifier circuit (1) and the AC power supply (5).

3. A comprehensive protection device circuit verification station according to claim 2, characterized in that: An output signal lamp (7) is connected between the short-circuit protection circuit (3) and the verification circuit (4).

4. A comprehensive protection device circuit verification station according to claim 3, characterized in that: A switch (8) is connected between the AC circuit (5) and the input signal light (6).

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