Title :
Application of Transient Earth Voltage method in PD detection in GIS
Author :
Ming Ren ; Ming Dong ; Zhong Ren ; Hongjie Li ; Aici Qiu
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equip., Xi´an Jiao Tong Univ., Xi´an, China
Abstract :
This paper discussed the utilization of TEV-Transient Earth Voltage method in PD detection of GIS. The typical defect models in GIS concluding spikes fixed on HV conductor, voids defect in dielectric, suspended metals had been detected by TEV method, PMT, Rogowski monitor and PDCheck system synchronously. The TEV results showed good consistency with other three methods and had a good sensitivity. Based on this, phase distribution of PD, pulse number of different voltage level thresholds and the signal PD pulse characteristic had been obtained in this paper. In addition, the PD of needle-plane with very short gap had been detected under high frequency oscillating impulse voltage using this method.
Keywords :
conductors (electric); dielectric materials; gas insulated switchgear; partial discharges; power system transients; GIS concluding spikes; HV conductor; PD check system; PD detection; Rogowski monitor; dielectric metals; high frequency oscillating impulse voltage; phase distribution; pulse number; signal PD pulse characteristic; suspended metals; transient earth voltage method; voids defect; voltage level thresholds; Coils; Current measurement; Discharges (electric); Gas insulation; Metals; Needles; Partial discharges; GIS; PD detection; TEV; partial discharge; transient earth voltage;
Conference_Titel :
Electrical Insulating Materials (ISEIM), Proceedings of 2011 International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-4-88686-074-3
DOI :
10.1109/ISEIM.2011.6826295
