Simulated circuit breaker testing device
A technology for simulating circuit breakers and testing devices, applied in the field of simulating circuit breaker testing devices, can solve problems affecting the stability and accuracy of testing devices, unstable analog control command signals, control failures, etc., to achieve the suppression of operational amplifier zero drift, Avoid electrical interference, avoid the effect of imbalance
Inactive Publication Date: 2021-12-17
许昌电测智能电力装备有限公司
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Problems solved by technology
In the automatic test process, since the control commands issued by the controller will be interfered by external power supply and environmental factors, it is easy to cause instability and imbalance of the analog control command signal, resulting in control failure or error, which seriously affects the performance of the test device. Stability and Accuracy
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[0015] Regarding the aforementioned and other technical contents, features and effects of the present invention, refer to the appended figure 1 It will be apparent from the detailed description of the embodiments. The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.
[0016] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
[0017] The simulated circuit breaker test device includes a controller, an instruction adjustment unit and a test control management unit. The instruction adjustment unit is used to adjust and process the control instruction signal issued by the controller, and includes an instruction amplification notch adjustment circuit and a stability adjustment circuit.
[0018] Such as figure 1 As shown, the command amplification notch conditioning circuit includes operational amplifiers AR1, AR2 and AR3. The non-inverting inpu...
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The invention discloses a simulation circuit breaker testing device, which comprises a controller, an instruction adjusting unit and a test control management unit, wherein the instruction adjusting unit is used for adjusting a control instruction signal issued by the controller and comprises an instruction amplification trapped wave conditioning circuit and a stable conditioning circuit; the instruction amplification trapped wave conditioning circuit comprises operational amplifiers AR1, AR2 and AR3, the in-phase input end of the operational amplifier AR1 is connected with one end of a resistor R1 and the analog instruction signal output end of the controller through a capacitor C1 and is connected with the in-phase input end of the operational amplifier AR3 through a trapped wave assembly, and the stable conditioning circuit is used for carrying out amplitude stabilization adjustment on output signals of the instruction amplification trapped wave conditioning circuit, and sending the signals into the test control management unit after being buffered and stabilized. According to the invention, interference of an external power supply and environmental factors on the instruction signal is effectively eliminated, the stability and accuracy of the issuing process of the simulation control instruction signal are ensured, and then the effectiveness of the test result of the simulated circuit breaker is effectively improved.
Description
technical field [0001] The invention relates to the technical field of simulated circuit breakers, in particular to a test device for simulated circuit breakers. Background technique [0002] As an important part of the safe and reliable operation monitoring of the power system, the secondary device of relay protection is also very important for its own operation and judgment reliability. Therefore, it is very important to check and test the secondary relay protection device used in the power system . At present, the simulated circuit breaker test device has realized automatic detection. For example, the application number is 201811282579. The interactive test device realizes the human-computer interaction test according to the test requirements of different functions of the board to be tested. Especially, the tester cannot test the resources that the tester cannot directly define. Human factors caused incomplete testing and other problems, and proposed 5 kinds of simulate...
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IPC IPC(8): G01R31/00
CPCG01R31/003
Inventor 胡贺召贾发军王松超侯高雷杨振宇何传虎李文波许龙飞
Owner 许昌电测智能电力装备有限公司