Frequency Voltage Control and Economic Optimization of Shipboard Microgrid Based on Economic Model Predictive Control

The dependence of ship power systems on renewable energy generation is increasing. The intermittent nature of renewable energy generation can cause frequency deviations in ship microgrid systems. Therefore, the integration of a Hybrid Energy Storage System (HESS) is crucial for enhancing the resilience of microgrid frequency deviations. Load frequency control (LFC) and voltage control requires an appropriate control strategy to achieve this. Based on the above considerations, an economic model predictive control (EMPC) strategy is proposed in this paper to regulate and optimize ship microgrids. The proposed EMPC combines the regulation objective with the economic optimization objective, so that frequency correction and system economic improvement can be performed simultaneously. Through theoretical analysis, this paper proves that the average performance of the proposed method is not lower than the steady-state performance. In addition, simulation experiments are used to verify the effectiveness and reliability of the proposed EMPC.