Switch cabinet plum blossom contact diagnosis system and method thereof

Abstract

The invention relates to a switch cabinet plum blossom contact diagnosis system and a method thereof. The system comprises a contact pressing force test module, a loop resistance test module, a data storage module and a data analysis and diagnosis module; the contact pressing force test module and the loop resistance test module are connected with the data storage module, and the data storage module is further connected with the data analysis and diagnosis module. The invention is reasonable in design, the function of overhauling the contact in the overhauling stage is achieved, and the situation that the contact is overheated and burnt due to insufficient pressing force after operation, and power supply stability is affected is avoided; moreover, automatic learning analysis can be performed on previous data, trend pre-judgment and diagnosis suggestions are given according to results to realize diagnosis of the plum blossom contact, and then maintenance suggestions are given.

Description

technical field [0001] The invention belongs to the technical field of high-voltage switch cabinets, and relates to a three-phase contact in a closed high-voltage switch cabinet, in particular to a switch cabinet plum blossom contact diagnosis system and a method thereof. Background technique [0002] High-voltage switchgear is widely used in power systems, and it is used for on-off, control or protection in power system power generation, transmission, distribution, power conversion and consumption. The contact performance of the wire connection in the switchgear directly affects the reliability of the switchgear. [0003] During the working process of the closed high-voltage switchgear, due to the high temperature rise of the three-phase contacts in the switchgear, local welding or sparks and arc discharges will cause power system failures. Therefore, during the working process of the high-voltage switchgear, real-time monitoring is required. The temperature of the three-p...

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Problems solved by technology

[0003] During the working process of the closed high-voltage switchgear, due to the high temperature rise of the three-phase contacts in the switchgear, local welding or sparks and arc discharges will cause power system failures. Therefore, during the working process of the high-voltage switchgear, real-time monitoring is required. The temperature of the three-phase contact. At present, the on-line monitoring technology of the contact generally uses sensors to monitor the temperature of the contact arm, and then judges through comprehensive comparison. The above method belongs to the defect "post" monitoring technology. When an overheating fault occurs, an early warning can be issued, and then a power outage maintenance is performed.

[0004] After searching, no relevant literature on the diagnostic technology of the switchgear plum blossom contact was found, and the existing technology cannot prevent the overheating of the switchgear contact

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