Abnormal Discharge Detection for Power Equipment Based on Light-Guiding Structure

Optical measurement based on optical principles has unique advantages in terms of anti-interference and sensitivity, making it an important method for partial discharge detection. This paper proposes an abnormal discharge detection technology for power equipment based on a light-guiding structure, which consists of the light-guiding structure and a silicon photonic semiconductor-based spectral sensing system. The light-guiding structure can be placed inside the power equipment to sense the localized discharge optical signals and transmit them to the spectral sensing system outside the equipment for abnormal discharge detection. Optical simulation methods are used to analyze the optical path of the light-guiding structure, and a partial discharge test platform is built to verify the effectiveness of this abnormal discharge detection technology in enlarging the detection range of partial discharge and achieving multi-spectral detection of partial discharge. This provides a new approach for online monitoring of internal partial discharge in enclosed power equipment.