Integrated testing device for fusing characteristics of high-voltage fuse

Abstract

The invention discloses a high-voltage fuse fusing characteristic comprehensive testing device which is arranged between an alternating current voltage source and a high-voltage fuse and comprises a rectifier bridge circuit, a full-bridge inverter circuit, an LC filter circuit, a transformer and a fuzzy PI and repetitive control composite circuit. The rectifier bridge circuit, the full-bridge inverter circuit, the LC filter circuit and the transformer are sequentially connected in series, the rectifier bridge circuit is further connected with the alternating-current voltage source, and the transformer is further connected with the high-voltage fuse; and the fuzzy PI and repetitive control composite circuit is connected with the full-bridge inverter circuit and is also connected between the transformer and the high-voltage fuse. The method is good in dynamic performance, good in steady-state precision, high in stability and good in safety.

Description

technical field [0001] The invention belongs to the technical field of fuse detection, and in particular relates to a comprehensive testing device for fusing characteristics of high-voltage fuses. Background technique [0002] At present, the engineering community generally adopts the method of short-circuiting the secondary side of the adjustable autotransformer to obtain a large current to test the fusing characteristics of the fuse. There are disadvantages such as long adjustment time, poor adjustment accuracy, inaccurate timing, and inability to output the current-time characteristic curve. The engineering and academic circles have made corresponding explorations on high-voltage fuse fusing characteristic testing devices or instruments, and achieved some results, but generally they have not entered the prototype or product stage, and only stayed in the concept or design stage. At present, no similar products have been found in China, and there is a lack of corresponding ...

AI Technical Summary

Problems solved by technology

At present, no similar products have been found in China, and there is a lack of corresponding testing methods for issues such as whether the current-time characteristics of high-voltage fuses are qualified, whether they are consistent with the nameplate identification, and whether they meet the operating requirements.

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