| Title |
Analysis of Partial Discharge Signal Propagation Characteristics in GIS using FEM |
| Authors |
김재철(Kim Jae-Chul) ; 이도훈(Lee Do-Hoon) ; 송승엽(Song Seung-Yeop) ; 김광화(Kim Kwang-Whoa) |
| Keywords |
GIS ; Partial Discharge ; Propagation Mode ; FEM |
| Abstract |
The UHF electromagnetic waves excited by PD pulses propagate along the GIS busbar not only TEM mode, but also TE and TM mode. Generally the waves detected by the UHF sensors are those of high order modes and such waves can only propagate higher than cut-off frequency. In this paper, the cut-off frequency of 362[kV] GIS for each modes is computed and the electromagnetic field of each propagation modes is simulated by FEM(Finite Element Method) program. Frequency band of each TEmn/TMmn modes was determinated by simulation results and was discussed optimal position of UHF sensor from this results. |