Insulation defect detection device and method for electrical device

Abstract

The embodiment of the invention, which belongs to the field of electrical equipment, provides an insulation defect detection device and method for an electrical device. The insulation defect detectiondevice comprises a quantum sensor for detecting distribution characteristics of an electric field and / or a magnetic field intensity of an electric device, a laser generator for emitting laser light by the quantum sensor to excite the quantum sensor, a microwave transceiver for transmitting a microwave signal to the quantum sensor and receiving a microwave signal fed back by the quantum sensor, anelectron spin resonance spectrometer for starting the laser generator and the quantum sensor and acquiring distribution characteristics of the electric field and / or magnetic field intensity of the current transformer in space based on the fed back microwave signal, and a processor for determining whether the electrical device has a defect based on the detected distribution characteristics and determining the type of the defect if the electrical device has a defect. With the insulation defect detection device, the distribution characteristics of the electric field and the magnetic field of theelectrical device can be detected and the defect type of the electrical device is determined.

Description

technical field [0001] The invention relates to electrical equipment, in particular to an insulation defect detection device and method for electrical equipment. Background technique [0002] Electrical equipment is an important component of the power system, and its normal and stable operation is an important basis for the safe and reliable operation of the power system. However, raw materials, design, manufacturing process, transportation, installation and other reasons will cause defects in the insulation of electrical equipment. If it is not discovered in time, defects such as local overheating and partial discharge may occur during operation, and may even cause equipment to catch fire and explode, seriously affecting the power grid and personal safety. At present, the state detection methods of electrical equipment such as bushings and transformers mainly include infrared temperature measurement and relative dielectric loss factor measurement. Infrared temperature mea...

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Problems solved by technology

Infrared temperature measurement can detect current-induced heating defects and overall voltage-induced heating defects sensitively, but it is difficult to detect serious defects of small-scale concentrated type, and such defects may develop rapidly and lead to malignant failures; relatively The measurement of dielectric loss factor requires the modification of the end screen of the equipment, which increases the risk of equipment operation, and it is also difficult for this type of measurement technology to find serious defects of small-scale concentration

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