Circuit breaker three-phase closing synchronization and contact bounce detection device and detection method

Abstract

The present invention provides a circuit breaker three-phase closing synchronization and contact bounce detection device and detection method. Each detection circuit of the detection device is mutually independent and is provided with an isolation power supply module, so that signal crosstalk generated during detection is effectively eliminated. During measurement, the wiring direction and polarity of the wiring terminal P1 and the wiring terminal P2 are not considered, the wiring terminal P1 and the wiring terminal P2 only need to be connected to the two ends of each phase of circuit breaker, the connection of three-phase detection can be completed only by connecting six wires, and the detection of the three-phase closing synchronization of the circuit breaker and the contact bounce condition is greatly facilitated. According to the detection method, the detection precision of the detection device is improved by improving the detection frequency of the optocoupler isolation module and the acquisition frequency of the DSP high-speed sampling module, and the detection time of each phase is calculated to obtain the three-phase closing synchronization time and the contact bounce time.

Description

technical field [0001] The invention relates to the field of electric equipment detection, in particular to a detection device and detection method for three-phase closing synchronization and contact bouncing of a circuit breaker. Background technique [0002] In the field of power equipment detection, the detection of the three-phase closing synchronization and contact bounce of circuit breakers is a very important task. In the previous detection methods, there was a large signal crosstalk in the detection process due to the fact that the detection circuit was not independent and the power supply was not isolated. The test results are inaccurate and prone to misjudgment. At the same time, due to the complexity of the detection wiring, problems such as low efficiency of the detection personnel's wiring detection work are caused. Contents of the invention [0003] In order to solve the above problems, the present invention provides a circuit breaker three-phase closing syn...

AI Technical Summary

Problems solved by technology

[0002] In the field of power equipment detection, the detection of the three-phase closing synchronization and contact bounce of circuit breakers is a very important task. In the previous detection methods, there was a large signal crosstalk in the detection process due to the fact that the detection circuit was not independent and the power supply was not isolated. Inaccurate test results, prone to misjudgment

At the same time, due to the complexity of the detection wiring, it has caused problems such as low efficiency of the detection personnel's wiring detection work.

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