Conductive contact surface performance mutual inductance isolating real-time online diagnosing and repairing system and using method thereof

Abstract

The invention discloses a conductive contact surface performance mutual inductance isolating real-time online diagnosing and repairing system and a using method thereof. The system comprises an impedance detection component, an electrical grinding component and a current transformer, wherein the current transformer is connected in series in an external circuit and is connected with the impedance detection component; the impedance detection component and the electrical grinding component are connected in parallel to a detected relay contact, and parallel connection ends are respectively connected with the external circuit through an isolating switch; and two ends of the electrical grinding component are respectively connected with a detected relay coil so as to control the opening / closing of the relay contact. Compared with the prior art, the invention has the advantages that: 1, online real-time detection and online grinding of a conductive contact surface are realized, the interference of online detection operation on a circuit system is avoided, the detection frequency and detection real-time property are improved, the equipment components are free of overhaul, disassembly and maintenance, the repairing efficiency and reliability are greatly improved, and the loss rate and the cost are reduced; and 2, the system is simple and compact in whole structure and convenient and easy to operate.

Description

technical field [0001] The invention relates to an online diagnosis and repair system and its use method, belonging to the technical field of electrical automation, in particular to a mutual inductance type isolation real-time online diagnosis and repair system for the conductive contact surface performance of electrical switches, relays and other contacts and electrical connectors. Instructions. Background technique [0002] In the field of electrical automation, various switching components are widely used, which has an important impact on the reliability of many key circuits that operate continuously online. At present, preventive maintenance measures such as regular inspection and maintenance are mainly adopted for this type of critical circuit, but the effect is not significant, and frequent downtime and dismantling for a long time are required, which reduces the availability of equipment. The active intervention diagnostic system needs to terminate the normal operatio...

AI Technical Summary

Problems solved by technology

In the existing technology, the traditional repair method is to disassemble the switch element and disassemble it, take out the pin of the contact or connector, and manually grind the conductive contact surface, but for some fully sealed switchgear, it can only be scrapped replace

This traditional grinding method needs to disassemble and reassemble the switch elements, which is complicated and labor-intensive, and it is difficult to ensure that the fit clearance after reassembly can be restored to the original best state; on the other hand, grinding will also damage the contact copper surface There is additional wear and tear, and usually the contacts need to be scrapped after only one or two grinding repairs; at the same time, contact grinding has higher technical requirements for operators

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