Title :
Partial discharge inception voltage of twisted pair samples under long-time repetitive bipolar impulses
Author :
Kimura, Ken ; Ushirone, Sojiro ; Fukushima, Tadaaki ; Ohtsuka, Shinya ; Hikita, Masayuki
Author_Institution :
Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
The reliability of inverter-fed motors depends on partial discharge (PD) behavior of stator windings. In this paper we discuss partial discharge inception voltage (PDFV) characteristics of twisted-pair samples under long-time repetitive impulses using optical and electrical PD detection methods. For PDIV measurement, we adopted step-by-step and continuous rise of peak voltage of impulse. The repetitive frequency is 500 Hz. The result suggests that PD can occur even after a long period of time of repetitive impulses. We discuss practical importance of test procedure of PDIV under the special voltage waveforms.
Keywords :
impulse testing; insulation testing; invertors; machine insulation; machine testing; partial discharge measurement; stators; twisted pair cables; voltage measurement; 500 Hz; PDIV measurement; electrical PD detection method; inverter-fed motor reliability; long-time repetitive impulse; optical PD detection method; partial discharge behavior; partial discharge inception voltage characteristics; repetitive frequency; stator windings; twisted-pair sample; voltage waveform; Character generation; IEC standards; Impulse testing; Insulation; Optical noise; Partial discharges; Pulse generation; Shape; Stator windings; Voltage;
Conference_Titel :
Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on
Print_ISBN :
0-7803-8447-4
DOI :
10.1109/ELINSL.2004.1380514
