Abstract
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Integration of distributed generation (DG) in a distribution network may introduce adverse effects including control
interaction, oscillatory transients and operational conflicts. This paper investigates the operation of multiple voltage
regulators such as on-load tap changer (OLTC) and step voltage regulator (SVR), and DG in a medium voltage
distribution feeder. Investigations have been carried out using time domain simulation studies conducted using
MATLAB-SimPowerSystems. The results are reported for a case study involving radial distribution feeder, derived
from New South Wales (NSW) electricity distribution network in Australia.