Broadband PLC channel modeling and performance analysis of busbar energy distribution systems

With the smart grid, a network infrastructure managing and controlling processes from energy generation to final consumption is targeted. Smart grid architecture aiming to provide the level of quality of supply required for increased consumption and improve asset optimization by an efficient use of energy can be achieved through a communication infrastructure that is reliable and can be extended based on needs. Thus, effective use of information and communication technologies in this field is crucial. In this regard, this thesis examined busbar distribution systems, which constitute a significant part of the distribution network, as a broadband data transmission medium. Busbar distribution lines were modeled with a novel RLGC (f, A) model based on conductor cross-section and frequency by using the measured S-parameters, and busbar transmission line parameters were obtained. Busbar PLC channel can be defined as N-branch network. A frequency domain channel modeling was performed through a bottom-up (BU) approach based on S-parameters of a single branch network. The whole channel was regarded as N cascaded single-branch networks. A simulator interface was created to implement different network topologies. The effects of line lengths, branching properties (number, length, position) and load impedances on the transfer function of the channel between the transmitter and the receiver were examined, and the effect of these changes on the channel capacity was investigated. In addition, the rms delay spread of the channel in the different network topologies was calculated, and BER performances were obtained.