Application of Fault Tree Analysis for Shipboard Zonal Electrical Distribution System: Study Case of Redesign From Radial Topology

Zonal electrical distribution system (ZED) is an electric distribution system introduced by the navy. ZEDS is designed on having starboard and port dc busses supplied electrical zonal load. If a failure occurs on one distribution-line, it will be covered by another line. The whole designs and scenarios make the electrical system more reliable. In general, increasing reliability make the investment value tend to be higher. Therefore, this paper is present to provide an investment and risk perspective on the application of ZEDS. Existing shipboard power systems with radial topology is redesigned with ZEDS, and then both are evaluated. The investment and risk evaluation from using Radial and ZEDS is presented as results.