Real time digital simulator studies for performance evaluation of static VAr compensators in low short circuit level power grids: The Tauá II SVC example

Real time digital simulator studies for performance evaluation of the Tauá II SVC (-45 to 90Mvar / 230kV) are presented in this paper. Due to the low short-circuit levels at the SVC point of common coupling and to the presence of resonances associated to harmonics higher than the eleventh, it was adopted a configuration considering a series blocking reactor at SVC medium voltage busbar. It is demonstrated the fulfillment of the Specification requirements and despite of the technological progression of voltage source converter SVCs, the viability of using conventional FACTS devices to voltage control in electric power systems is demonstrated due to its satisfactory performance and competitive cost.