Title :
Simulating Propagation Characteristic of UHF Signal for PD Monitoring in Transformers by FDTD Technique
Author :
Xu Bin ; Li Junhao ; Si Wenrong ; Li Yanming
Author_Institution :
Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an
Abstract :
Partial discharge (PD) in transformer can be detected on-line by UHF technique. However, the relationship between the UHF signal received by UHF sensors and the PD sources is not very clear. It is very important studying the propagation properties of the PD signal. In this paper, the electromagnetic waves emitted by PD sources are investigated. The finite difference time domain (FDTD) technique is used to model wave transients. The model consists of a tank and a PD source. The wave transients at different time and position are simulated. The results show the propagation transients of the PD signal in the tank and wave propagation attenuates with distance between the source and the sensors.
Keywords :
UHF devices; condition monitoring; electric sensing devices; finite difference time-domain analysis; partial discharges; power transformers; FDTD technique; PD monitoring; UHF sensors; UHF signal; electromagnetic waves; finite difference time domain technique; frequency 300 MHz to 3000 MHz; partial discharge; transformers; wave transients; Electromagnetic propagation; Electromagnetic scattering; Electromagnetic transients; Finite difference methods; Monitoring; Partial discharges; Sensor phenomena and characterization; Time domain analysis; Transformers; UHF propagation;
Conference_Titel :
Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-2486-3
Electronic_ISBN :
978-1-4244-2487-0
DOI :
10.1109/APPEEC.2009.4918748
