Application of electrostatic position detection in on-line monitoring of oil streaming electrification of power transformer

This paper firstly provides relevant literature review of power transformers' oil streaming electrification. Then, the charging mechanism and influencing factors of power transformers' oil streaming electrification are illustrated. Finally, the approach of electrostatic positioning detection for on-line monitoring of oil streaming electrification is discussed. Masked detection unit is introduced to improve the direct induction method, and according to the extent of oil streaming electrification, different electrode shape and detection system are utilized for on-line monitoring of the electrostatic information. Electrostatic positioning detection can accomplish on-line monitoring of oil streaming electrification before electrostatic discharge.