RAILWAY SIGN POWER LINE AS TRANSMISSION MEDIUM FOR NARROWBAND PLC
This work shows transmission parameters of specific power line, which is control cable used for supplying a railway sign. Two transmission parameters are considered, namely: attenuation and characteristic impedance, these two secondary parameters are calculated from primary parameters i.e. R, L and C. Primary parameters and their components were calculated if they depended on the frequency or were taken from producers notes.
Analysis was done for the frequency in range from 50 kHz up to 100 kHz. Two types of cables were analysed, as extreme cases, first with the 1 mm2 solid conductors cable and second with the 1.5 mm2 19 strands conductors. Knowing the PLC modem transmission parameters together with the transmission parameters of the
railway sign power line it is possible to calculate the capabilities of the communication system e. g. distance or maximum bit rate.
Bush, S. F. (2014). Smart grid: Communicationenabled intelligence for the electric power grid. John wiley & sons
Short, T. A. (2014). Electric power distribution handbook. CRC press
Cooper, D., Jeans, T. (2002). Narrowband, low data rate communications on the low-voltage mains in the CENELEC frequencies. I. Noise and attenuation. IEEE Transactions on power delivery, 17(3), 718-723
Cooper, D., Jeans, T. (2002). Narrowband, low data rate communications on the low-voltage mains in the CENELEC frequencies. II. Multiplicative signal fading and efficient modulation schemes. IEEE Transactions on power delivery, 17(3), 724-729
Chipman, R. A. (1968). Schaum’s outline of theory and problems of transmission lines. McGraw-Hill
Papaleonidopoulos, I. C., Karagiannopoulos, C. G., Theodorou, N. J., Anagnostopoulos, C. E., Anagnostopoulos, I. E. (2002, March). Modelling of indoor low voltage power-line cables in the high frequency range. In International Symposium on
Power Line Communications and Its Applications (ISPLC) (pp. 27-29)
Kiedrowski, P. (2015). LV network modelling for smart lighting control systems over PLC. Rynek Energii, 116(1), 108-113