For some time now, National Grid Company (NGC) has been developing on-line
transient stability analysis tools. A particular need is the development of
a facility that will help in the monitoring of intertrip schemes. This pap
er, therefore, describes the features of the General Intertrip Monitoring S
ystem (GIMS) facility developed for the NGC system and currently running on
-line at the National Control Centre. The paper also demonstrates the opera
tional experience in using this tool. (C) 2001 Elsevier Science Ltd. All ri
ghts reserved.