Title :
Effects of high power converter on power line carrier signal
Author :
Mahmod, S. ; Mailah, Nashiren Farzilah ; Radzi, MohdAmranMohd
Author_Institution :
Fac. of Eng., Universiti Putra Malalysia, Selangor, Malaysia
Abstract :
Power line carrier (PLC) systems are used in transmission of signals for teleprotection, teletripping, telecontrol and speech communication. The signal to noise ratio (SNR) of the PLC is based on the noise level at the input of the carrier´s receiver. The interference due to large power converter will be superimposed on the background noise at lower level. It has reduced the SNR to an unacceptable value. This paper deals with analysis of high frequency (HF) harmonics (higher than 20 kHz) produced from the converters, and the methods used to reduce the noise imposed on the PLC communication signal. The experimental and simulation results have been obtained for both processes.
Keywords :
carrier transmission on power lines; noise; power convertors; power system harmonics; voice communication; HF harmonics; PLC communication signal; SNR; UPS; background noise; high power converter; noise level; noise reduction; power line carrier signal; power line carrier systems; receiver; signal to noise ratio; signals transmission; simulation results; speech communication; telecontrol; teleprotection; teletripping; uninterrupted power supply; Background noise; Frequency conversion; Harmonic analysis; Interference; Noise level; Noise reduction; Oral communication; Programmable control; Signal analysis; Signal to noise ratio;
Conference_Titel :
Telecommunication Technology, 2003. NCTT 2003 Proceedings. 4th National Conference on
Print_ISBN :
0-7803-7773-7
DOI :
10.1109/NCTT.2003.1188327
