A Cost Effective Trigger Circuit for an On-line Multi-sensor Partial Discharge Monitoring System

AL ZAABI M., SALAH M., QASIM M., EL-HAG A., Yesildirek A.

IEEE International Symposium on Electrical Insulation (ISEI), San Juan, Argentina, 10 - 13 June 2012, pp.104-107 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • City: San Juan
  • Country: Argentina
  • Page Numbers: pp.104-107
  • Yıldız Technical University Affiliated: No


This paper proposes a novel multi-sensor approach for Partial Discharge (PD) detection of Power System Apparatus. Three sensors were used to detect partial discharge namely, Radio frequency (RF) antenna, High Frequency Current Transformer (HFCT), and Acoustic Emission (AE) sensor. A cost-effective trigger circuit was implemented to overcome the expensive requirements of the acquisition of RF and CT signals. The trigger circuit initiates the acquisition of the AE signal upon sensing a PD condition by either the RF or CT sensors. The circuit has been designed, simulated and tested experimentally and has been proven to operate properly under various input frequencies and threshold levels.