Modeling and performance of a power distribution system for hybrid fiber/coax networks

This paper presents the performance of a power distribution system for hybr id fiber/coax networks, The power scheme uses 90-V 60-Hz trapezoidal voltag e distribution over the network. A simulation model of the proposed distrib ution system is developed, and the performance under steady-state, transien t, and dynamic conditions is studied. The system loading capability as a fu nction of cable size and distribution length is presented. It is shown in t he paper that synchronous power sources can provide a much larger distribut ion reach than asynchronous sources. In order to ride through a fault in th e system, it is found that the power supplies used in the coax node and the home termination unit should have enough holdup time capability, A system designed in this manner is inherently stable.