Synchronous measuring device and method of arc and contact moving process based on laser imaging

Abstract

The invention discloses a synchronous measuring device and synchronous measuring method of an arc and contact moving process based on laser imaging. The device comprises a short-circuit current generating device, a CW-laser illuminator, a high-speed photographic device, an electric parameter measuring device and a digital delay pulse generator, wherein the digital delay pulse generator is used for simultaneously triggering the short-circuit current generating device, the high-speed photographic device and the electric parameter measuring device, the short-circuit current generating device is used for outputting short-circuit current to generate an arc in a breaker to be tested; the CW-laser illuminator is utilized to transmit continuous laser as a background light source, and the morphological evolution of the electric arc in the breaker to be tested, the motion of the contact and the interaction of the electric arc and the contactor can be simultaneously shot by the high-speed photographic device in a strong electric arc illumination condition. According to the synchronous measuring device provided by the invention, the air on-off process can be deeply and completely understood, and the directly beneficial scientific basis can be provided for electric arc evolution, electric arc evolution, a relationship between clearance between open contacts and the like.

Description

technical field [0001] The invention belongs to the technical field of testing a circuit breaker breaking fault current process, and relates to a synchronous measuring device and method for an electric arc and a contact movement process based on laser imaging. Background technique [0002] The circuit breaker is one of the most important switching devices in the power system, and it is responsible for the dual tasks of control and fault protection. When a fault occurs in the system, in order to prevent the fault from expanding and ensure the safety of people and equipment, it is necessary for the circuit breaker to act quickly to remove the faulty part of the system. During the operation of a contact circuit breaker, an arc is generated in the contact gap. For circuit breakers that use air as the arc extinguishing and insulating medium, it is of great significance to study the air arc breaking process to improve product performance. [0003] Since the air arc itself is a c...

AI Technical Summary

Problems solved by technology

[0006] In view of the above deficiencies and defects, the object of the present invention is to provide a synchronous measurement device and method based on laser imaging of the arc and contact movement process, to solve the problem of not being able to simultaneously photograph the evolution of the arc in the arc extinguishing chamber under the condition of strong arc illumination, Difficulties in contact movement and arc-contact interaction process

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