Extending SWER line capacity

Abstract

SWER lines, with increasing load demand over time, begin to experience voltage sags during peak periods most often in little over half their asset life. Voltage sags are due most often to the lossy nature of SWER networks, and in lines over 100km, there is reserve thermal capacity to allow for use of LV customer voltage regulators. This paper provides methodologies as to how far toward the theoretical maximum power transfer point this can occur, as well as design considerations for the LV voltage regulators.