An Integrated Sensor with SiP Chip for Bushing Partial Discharge Monitoring of UHV Transformer

Abstract

To solve the interference problems of partial discharge signal monitoring in UHV transformers, this paper propose a sensor integrated with a special designed system-in-package chip (SiP) for bushing partial discharge monitoring. This sensor not only realize the local digitalization of the partial discharge analog signal but also apply a noise suppression method based on adaptive window singular value decomposition (AWSVD). Through laboratory simulation partial discharge signal acquisition test, this sensor can significantly suppress signal noise. This paper establishes a new noise suppression method for partial discharge monitoring of transformer bushings based on the integrated information processing method, which is a new technical idea for transformer bushing monitoring and can be extended to other electrical equipment monitoring.