dpc-
CT failure mode is unknown. We cannot pinpoint any one mode of failure because everything was ruined. I would agree with your initial thoughts, as I cannot see any relation to the reactors and the failures. We are leaning toward poor grounding as the culprit, but the reactors were...
We have a 69kV delta / 24.9kV gnd wye substation with a feeder that goes to an island. In the fall of 2008, we installed a 3 MVAR shunt reactor bank to counteract the ~3 MVAR of capacitance from the ~24 miles of submarine cable that feeds the island. This seemed to fix all issues we had.
This...