Distributed generation long-term planning for voltage profile enhancements using optimal hourly operation conditions

An algorithm to optimize distributed generation allocation in a long-term planning problem to purposely enhance hourly voltage profile is presented. This algorithm deploys an hourly optimal operation to fit the long-term planning problem. It requires the consideration of several operational factors both explicitly or as a byproduct. The complexity level of the problem and the degree of representation of variables (accuracy) necessitated the mixed integer nonlinear programming formulation. Case studies are performed to validate the proposed algorithm. Results confirm the potential benefits of the algorithm especially for distribution utilities interested in knowing the time, type (technology), location and size of DG units that can enhance voltage profile in an operational level.