The growth of distributed generation (DG) in distribution systems has great impacts on several practical issues, such as voltage rise/drop and system efficiency. In this paper, a smart centralized control system (SCCS) is proposed for optimizing the performance of distribution systems without violating constraints. The SCCS manages the voltage control devices (VCDs) as well as dispatchable DG sources in a cooperative manner to guarantee security and optimality of system operation. A

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... ive function with adaptive weighting factors (WFs) is introduced, which involves active losses, reactive losses, and voltage deviations. The SCCS optimizes the real-time operation of distribution systems by following a smart strategy that optimally resets the WF values as a response for violating system constraints; hence, the distribution system security is enhanced. Comprehensive simulation studies and comparisons with a time series simulation of a 24-hour period are performed to demonstrate