Transmission Loss Characteristics of Power Line with Distribution Board Using Four Terminal Pair Network Theory

Abstract

In this paper, we paid to attention for a distribution board actually used at house, and evaluated the transmission loss characteristic of the power line transmission model with the distribution board, and verified whether it is possible to analyze the transmission loss characteristic by using four terminal pair network theory, which has circuit constant as chain matrix of distributed constant on transmission line. As the result, in the condition without a branch line, it is confirmed that the calculation value agrees well with measurement one on both in-phase and out-of phase transmissions. Moreover, in the condition connecting the branch line at the distribution board, calculation value agrees well with measurement one in transmission loss and resonance frequency by considering the conductance of the insulating dielectrics of a power line. Therefore, it is verified that the validity by using the four terminal pair network theory for analysis of power line through the distribution board.