Method and system for identifying insulation defect of dry-type air-core reactor and terminal equipment

Abstract

The embodiment of the invention relates to a method and system for identifying insulation defects of a dry-type air-core reactor and terminal equipment, which are applied to an on-line monitoring device for insulation defects of the dry-type air-core reactor. The on-line monitoring device is connected with an operation loop; the operation loop comprises a bus of a power system, a circuit breaker connected with the bus and the reactor connected with the circuit breaker; the on-line monitoring device is used for collecting oscillation overvoltage waveforms of switching operation of the reactor in the operation loop and recording and storing the voltage waveforms; the voltage waveforms are processed; the oscillation attenuation voltage waveform and the reference waveform of the reactor are acquired in real time, and the periods and attenuation coefficients thereof are compared. Diagnosis of the insulation defect of the reactor is achieved, and the technical problem that an existing monitoring dry-type air-core reactor is inaccurate and not timely in insulation defect identification, so that turn-to-turn short circuit of an electric power system is caused by insulation aging of the reactor, and then equipment failure and fire catching are caused is solved.

Description

technical field [0001] The invention relates to the technical field of reactors, in particular to a method, system and terminal equipment for identifying insulation defects of dry-type air-core reactors. Background technique [0002] Reactors play a variety of roles in the power system such as limiting short-circuit current, compensating stray capacitive current, limiting closing inrush current, smoothing, filtering, starting, blocking wave, lightning protection, etc., and can be divided according to the connection type in the power grid They are series reactors and shunt reactors; they can be divided into air-core reactors and iron core reactors according to their structure; they can be divided into oil-immersed reactors and dry-type reactors according to their insulating medium; they can be divided into current-limiting reactors and Smoothing reactor, compensating reactor, etc. [0003] Dry-type air-core reactors are widely used in the power industry because of their adva...

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Problems solved by technology

[0006] The embodiment of the present invention provides a method, system and terminal equipment for identifying insulation defects of dry-type air-core reactors, which are used to solve the problem of inaccurate and untimely identification of insulation defects in existing monitoring dry-type air-core reactors, which leads to the failure of reactors in power systems. Insulation aging causes inter-turn short circuit, which leads to technical problems of equipment failure and fire

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