Advanced distribution management systems (DMS) become an extension of SCADA features by applying the software management principles from transmission networks to distribution systems. In addition, the modern DMS is capable of assessing the operational state of the distribution system and evaluating control functions such as reactive dispatch, voltage regulation, “what-if” scenarios, and analysis [78]. Real-time evaluation using a power flow module will provide a close-to-real-world scenario simulation, to predict the best consequences that can be useful for operational purposes [79]. A calculation or analysis method should be developed to meet the requirements of rigorous operational type analyses, system power losses, and hypothetical analyses on a large-scale distribution system that connects multiple substations.