Reliability analysis of auxiliary electrical systems and

With ref. ISBN 90-6144-287-7 NUGI832 Subject headings: electric power stations; reliability I auxiliary electrical systems; power plants. II n Reliability analysis of auxiliary electrical systems and generating units Boshu Liao and P. Massee A reliability analysis is applied to the auxiliary electrical system for a generating unit in a base load power station. Several designs for the auxiliary electrical system are possible and the only meaningful way to select the optimum design is by means of reliability indices. In this report the first step in this direction has been taken. In the analysis failures of all kinds of elements such as relays, motors, bus bars etc. are taken into account besides ageing of elements and preventive maintenance. Because of the fact that large motors are present in the system, this is sensitive to voltage dips and therefore the computerprogram REANIPOS has been used for the reliability analysis