CAPACITIVE DIVIDER SUBSTATION

The development of a passive damper-filter has made it possible to ach ieve a stable capacitive-coupling substation (SCC). This paper present s the underlying theory and analyzes the impact of the SCC on a power network system. The related nuisance phenomena (overvoltage, ferroreso nance) are described together with the solutions applied. Test results are presented as proof that the nuisance phenomena have been satisfac torily eliminated: overvoltage is adequately limited at the worst node by protecting the equipment and ferroresonance never lasts more than two cycles. Lastly, the paper describes Hydro-Quebec's first such capa citive-coupling substation installed at Riviere Ste-Anne (Quebec).