Title :
Study on the feasibility of detection of partial discharge signals under square voltages
Author :
Gao, Minggang ; Meng, Yongpeng ; Xi Chen ; Wang, Yang ; Cheng, Yonghong ; Wu, Kai ; Cao, Wen
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
Partial discharge (PD) is one of the most important factors in shortening the service life of the insulation. However, it is much difficult to detect PD signal under pulse-width modulation (PWM) voltages. In this paper, signal processing model is put forward to study the factors influencing PD signal processing under square voltages based on wavelet analysis. Slew rate is an important factor influencing interference and signal processing performance. Resolution of wavelet function is a key factor when time interval between PD is small. By calculating signal to noise ratio (SNR) at different situations, feasibility of our signal processing model can be achieved.
Keywords :
partial discharges; signal detection; wavelet transforms; partial discharge; signal detection; signal processing model; signal to noise ratio; slew rate; square voltages; wavelet analysis; Insulation; Partial discharges; Pulse width modulation; Signal analysis; Signal detection; Signal processing; Signal to noise ratio; Space vector pulse width modulation; Voltage; Wavelet analysis; feasibility; partial discharge; square voltage; wavelet;
Conference_Titel :
Properties and Applications of Dielectric Materials, 2009. ICPADM 2009. IEEE 9th International Conference on the
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-4367-3
Electronic_ISBN :
978-1-4244-4368-0
DOI :
10.1109/ICPADM.2009.5252440
