Online monitoring device for turn-to-turn insulation degradation of dry-type air-core reactor

Abstract

The invention relates to an on-line monitoring device for turn-to-turn insulation degradation of a dry-type air-core reactor. The technical characteristic is that the device is characterized by comprising a base, the system comprises an collection terminal and a user terminal. The collection end is installed on the dry-type air-core reactor. The collection terminal comprises a gas sensor, a temperature sensor, an A / D conversion unit, a data processing unit, a power supply module and a signal transmission unit. The power supply module is connected with the data processing unit and supplies power to the data processing unit, the gas sensor and the temperature sensor are connected to the data processing unit through the A / D conversion unit, and the data processing unit is connected with the signal transmission unit. The user side comprises a signal receiving unit, an analysis and calculation unit and a data display terminal which are connected in sequence; and the signal transmission unitof the collection end is connected with the signal receiving unit of the user end. The reactor turn-to-turn insulation degradation monitoring device can effectively capture characteristic informationduring reactor turn-to-turn insulation degradation, analyze the reactor turn-to-turn insulation degradation degree in real time, discover insulation defects in time and avoid equipment faults, and has the advantages of being small in size, simple in structure, convenient to install and the like.

Description

technical field [0001] The invention belongs to the technical field of dry-type air-core reactors, in particular to an on-line monitoring device for inter-turn insulation deterioration of dry-type air-core reactors. Background technique [0002] Dry-type air-core reactors have the advantages of low loss, low cost, and simple maintenance, and are widely used in reactive power compensation in power systems. However, according to a large number of operating results, dry-type air-core reactors frequently break down and even catch fire. After analysis, it was found that the main cause of the fault was the deterioration of the inter-turn insulation of the dry-type air-core reactor, which led to a short circuit between the turns, and the reactor continued to overheat and then burned down. [0003] When an inter-turn insulation short circuit occurs in a dry-type air-core reactor, a circulating current is generated inside, resulting in local overheating of the reactor. Since the dr...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose an on-line monitoring device for inter-turn insulation deterioration of a dry-type air-core reactor, which monitors the operating temperature and gas decomposition products of the dry-type air-core reactor in real time, and then analyzes the inter-turn of the reactor. The degree of insulation degradation solves the problem that existing infrared temperature measurement methods cannot achieve real-time and online measurement

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