DATA TRANSMISSION CHARACTERISTICS OF THE OVERHEAD 330KV SINGLE CIRCUIT TRANSMISSION LINES

Abstract

The paper analyses the signal propagation behaviour and hence assesses the data transmission potentials of the 330kV single circuit overhead transmission lines. From the data collected from the NEPA Headquarters, the basic characteristic admittance matrix and impedance matrix were derived and used to obtain the high frequency parameters. These parameters reveal the propagation characteristics/behaviour of the lines. For the study of the load cycle effects, the peculiarities of the meteorological conditions of the regions these lines are run need to be considered. NEPA classifies the Nation (Nigeria) into two zones: Zone A (South) and Zone B (North). The various effects on the lines due to loading given the peculiar atmospheric conditions in these zones were studied. All results obtained were exhaustively discussed; conclusions were drawn and specific recommendation was made on the suitability of the 330kV lines for signal (data) transmission.