Day-ahead optimal operational and reserve power dispatching in a PV-based urban microgrid

Accurate sizing of power reserve (PR) due to inaccurate forecast of both renewable energy sources (RES) and load demand in a microgrid can provide substantial cost reductions. This paper proposes two strategies to dispatch the PR into different power generators. The first one uses only micro gas turbine (MGT). The second one uses MGTs plus PV based active generators (AGs). The latter enables the RES to cover the system load demand and PR for some period during a day. To implement those methods, firstly an urban microgrid with PV power generators is introduced. Then, day-ahead optimal planning with dynamic programming (DP) for unit commitment problem (UCP) is applied under several non-linear constraints. Finally, a case study application has been completed to verify the proposed methods.