Turn-to-turn insulation defect detection method

Abstract

The invention discloses a turn-to-turn insulation defect detection method which comprises the following steps: in a first step, a superimposed circuit formed via superimposition of a power frequency circuit and a high frequency pulse oscillation circuit; in a second step, one end of a dry type hollow reactor is connected with a first detection point of the superimposed circuit while the other end is connected with a second detection point of the superimposed circuit; in a third step, a second switch K1 is turned off, a first switch is turned on, the dry type hollow reactor L is connected with the high frequency pulse oscillation circuit, and whether the dry type hollow reactor L has turn-to-turn insulation defects is determined; if the dry type hollow reactor L has the turn-to-turn insulation defects, fourth step to sixth step are performed; whether the turn-to-turn insulation defects are metallicity breakdown, low-resistance breakdown and high-resistance breakdown is determined; positioning operation is conducted according to different defect properties. Via the turn-to-turn insulation defect detection method, a problem that the turn-to-turn insulation defects of a conventional dry type hollow reactor cannot be positioned is solved, and the defects can be accurately positioned.

Description

technical field [0001] The invention relates to a positioning method, in particular to a detection method for inter-turn insulation defects. Background technique [0002] In the prior art, accidents of reactors igniting and burning due to inter-turn insulation defects often occur in the power grid. At present, the means of detecting inter-turn insulation defects of dry-type air-core reactors in my country is still in the stage of experience accumulation and improvement. Since the inter-turn insulation defects of dry-type air-core reactors cannot be located and searched, the dry-type air-core reactors are largely limited. The development and progress of reactor turn-to-turn insulation defect detection technology. At the same time, due to the inability to locate the inter-turn insulation defects, the inter-turn insulation defects of the dry-type air-core reactor cannot be statistically analyzed in the entire operation process, which also limits the structure of the reactor. I...

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Problems solved by technology

[0002] In the prior art, accidents of reactors igniting and burning due to inter-turn insulation defects often occur in the power grid

At present, the means of detecting inter-turn insulation defects of dry-type air-core reactors in my country is still in the stage of experience accumulation and improvement. Since the inter-turn insulation defects of dry-type air-core reactors cannot be located and searched, the dry-type air-core reactors are largely limited. Development and progress of detection technology for reactor turn-to-turn insulation defects

At the same time, due to the inability to locate the inter-turn insulation defects, the inter-turn insulation defects of the dry-type air-core reactor cannot be statistically analyzed in the entire operation process, which also limits the structure of the reactor. Improvements and design refinements

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