Abstract
Nonlinear composite insulator voltage distribution is big, the umbrella skirt interval is small, this brought difficulty to defect inspection of composite insulator. Article is studied based on electric power within the composite insulator type defect inspection technology, the principle of uv pulse method, ultrasonic method and electric field method demonstrates in detail; Studied based on the contact type and non-contact composite insulator defect in charged detection technology, and made comprehensive comparison table for non-contact; Within the composite insulator is studied based on line defect charged detection technology, and map the working principle of the infrared thermal image; Technology of electric insulator in defect inspection technology outlook.
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