Energy Management System for Resilience-Oriented Operation of Ship Power Systems

TL;DR

This paper introduces a novel energy management system for ship power systems that enhances resilience by optimally coordinating multiple energy storage types and employing receding horizon optimization for real-time operation.

Contribution

The paper presents an original EMS that manages multiple energy storage systems and uses RHO to enable real-time, resilience-oriented operation of ship power systems.

Findings

Effective management of BESS and SCESS improves load operability.

RHO significantly reduces computational load compared to FHO.

Simulation confirms enhanced system resilience under power shortages.

Abstract

This paper proposes an original energy management methodology for enhancing the resilience of ship power systems considering multiple types of energy storage systems, including battery energy storage systems (BESS) and supercapacitor energy storage systems (SCESS). The primary function of the proposed EMS is to maximize the load operability while taking ramp-rate characteristics of energy storage systems (ESS) and generators into account innovatively. Balancing state-of-charge (SoC) of BESS and prioritizing the SoC level of SCESS are two additional objectives of the proposed EMS to manage energy storage systems. The receding horizon optimization (RHO) technique is proposed to reduce the computational burden, making the proposed method feasible for real-time applications. An all-electric MVDC ship power system is used to evaluate the performance of the proposed methodology. Simulation studies and results demonstrate the effectiveness of the proposed method in managing the ESS to ensure the system resilience under generation power shortage. In addition, the proposed RHO technique significantly reduces the computation burden seen in the FHO technique while maintaining an acceptable resilience performance.