Auxiliary contact rapid detection device for VD4-type vacuum circuit breaker and detection method

Abstract

The invention provides an auxiliary contact rapid detection device for a VD4-type vacuum circuit breaker and a detection method. The auxiliary contact rapid detection device comprises an upper opening and a detection device outer shell, wherein the detection device outer shell is in a cuboid shell body shape, and the periphery and the lower portion of the detection device outer shell are all closed. A circuit board assembly for detecting and indicating is arranged in the outer shell. An aviation plug interface which is in circuit connection with the circuit board assembly is arranged on one side of the outer shell. A battery pack is arranged on one side in the detection device outer shell. A detection indicating panel corresponding to the size and the position of the circuit board assembly is arranged on the upper portion of the circuit board assembly for detecting and indicating. The detection indicating panel is arranged at the upper opening of the detection device outer shell and completely seals up the upper opening of the detection device outer shell. The circuit board assembly for detecting and indicating is provided with an external power supply indication module, an auxiliary contact test status indication module, an auxiliary contact working condition indication module, a VD4 circuit indication module, an auxiliary contact breaker opening status indication module and an auxiliary contact breaker closing status indication module. The auxiliary contact rapid detection device is suitable for the field of rapid detection of an auxiliary contact of the VD4-type vacuum circuit breaker.

Description

technical field [0001] The invention relates to a detection device of a circuit element, in particular to a device for quickly detecting the working state of an auxiliary contact of a VD4 vacuum circuit breaker. Background technique [0002] At present, circuit breakers are widely used in the substation facilities of various electric power units, and as the number of substations continues to increase, the number of corresponding circuit breakers is also gradually increasing, but the personnel of the maintenance team has not changed, resulting in emergency repair teams. workload is increasing. As of the end of 2011, the most widely used VD4 vacuum circuit breaker among circuit breakers has accounted for 37% of the total number of all 10kV circuit breakers (not including K and P substations), so the inspection and maintenance of VD4 vacuum circuit breakers The workload accounts for a relatively large proportion of all workloads. [0003] During the daily inspection and maint...

AI Technical Summary

Problems solved by technology

[0004] 1. Incomplete inspection items

[0005] Since the old version of the VD4 work instruction book did not clearly state the auxiliary contact inspection items, and the auxiliary contact inspection items listed in the new version of the VD4 work instruction book in July 2012 were incomplete, resulting in the on-site maintenance personnel unable to Purposefully detect the actual operation of each auxiliary contact

[0006] 2. VD4 type vacuum circuit breaker has a large number of auxiliary contacts

[0007] VD4 type vacuum circuit breaker has a large number of auxiliary contacts due to its original design and structure problems, and the staff cannot completely remember the measurement position of each auxiliary contact. During the inspection work, it is often necessary to consult the circuit breaker manual, resulting in Detection speed is slow

[0008] 3) Inspection is inconvenient and easy to misjudge

Although this method is safe, reliable and convenient, the work cycle cannot be unified because the overhaul and relay maintenance belong to different departments, which often causes delays in detection

[0017] To sum up, in the prior art, during the inspection of the auxiliary contacts of the VD4 vacuum circuit breaker, due to the many auxiliary contacts and the inconvenience of inspection, it will take a lot of time for the staff, thereby reducing the work efficiency

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