Dynamic Economic Load Dispatch with Emergency Demand Response for Microgrid System Operation

An Effective uncertainties management is required to realize stable operation for community microgrid (MG) consist of electricity loads, variable renewable energies (VREs), photovoltaic power generations (PVs), battery energy storage systems (BESSs), and so on. The authors develop robust energy management controller (REMC) for optimizing system operation against uncertainties. Useful solutions are provided to the MG operator, whereas if the power imbalances are occurred by unpredictable events. This paper proposes a novel preventive control method of the power imbalance problem at unpredictable events using the proposed robust dynamic economic load dispatch (DELD) method with demand response (DR). The proposed method can identify the power mismatch (Pmis) in advance by using the proposed supply and demand mismatch (SDM) computation procedures. The DR is introduced to resolve the Pmis in the critical situation of MG that can be effectively avoided using the consumer-side load curtailment control. Prediction errors of PVs can be effectively treated by a novel setting of confidence intervals (CIs) obtained by historical data analysis for different time horizons for forecasting.