Partial discharge detecting sensor and manufacturing method thereof

Abstract

The invention discloses a partial discharge detecting sensor and a manufacturing method thereof. The partial discharge detecting sensor comprises a first half-ring magnetic core piece and a second half-ring magnetic core piece, wherein the second half-ring magnetic core piece is arranged corresponding to the first half-ring magnetic core piece, so as to surround an element to be detected in the circumferential direction; and the first half-ring magnetic core piece and / or the second half-ring magnetic core piece comprises at least two magnetic core blocks which are connected with each other. The first half-ring magnetic core piece and / or the second half-ring magnetic core piece is composed of the at least two magnetic core blocks which are connected with each other, so as to solve the problems that a partial discharge detecting sensor for equipment to be detected with large cross section diameter in the prior art is difficult to produce and manufacture, has high production and use costs, is difficult to realize mass production and even cannot be produced and manufactured.

Description

technical field [0001] The invention relates to the technical field of partial discharge detection, in particular to a partial discharge detection sensor and a manufacturing method thereof. Background technique [0002] The discharge that only occurs in a local area in the insulator, but does not penetrate between the conductors to which the voltage is applied, can occur near the conductor or in other places. This phenomenon is called partial discharge. Although partial discharge is only a very small energy release, usually only pC (picocoulomb), the harm of partial discharge cannot be underestimated. Due to the small discharge amount of partial discharge, it is difficult to detect. Long-term partial discharge will accelerate the aging and deterioration of key materials of equipment, and eventually cause functional damage to equipment, causing serious hazards such as power failure, explosion and even casualties. [0003] Chinese patent document CN208188187U discloses a high...

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Problems solved by technology

[0005] Therefore, the present invention aims to provide a partial discharge detection sensor and its manufacturing method. The technical problem to be solved is that the partial discharge detection sensor used for the device under test with a large cross-sectional diameter in the prior art is difficult to manufacture and has High cost of production and use, difficult to achieve mass production, or even impossible to manufacture

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