A new microcomputer controlled excitation system has been developed at
Ganz Ansaldo Electric Ltd primarily for power plant synchronous gener
ators. The paper introduces the main characteristics of the excitation
system: the redundant system configuration, the control functions and
structure, the hot standby microcomputer system, the high-level man-m
achine interface and diagnostic tools. Field experiences are presented
in the paper with special attention to Power System Stabiliser functi
on realised as a condition to Hungarian Electricity Board when joining
UCPTE. (C) 1998 Published by Elsevier Science Ltd.