4.6 Article

Joint Optimal Energy Management and Voyage Scheduling for Economic and Resilient Operation of All-Electric Ships Considering Safe Return

Journal

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
Volume 59, Issue 5, Pages 5304-5313

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIA.2023.3287968

Keywords

Navigation; Power systems; Resilience; Marine vehicles; Costs; Optimization; Greenhouse effect; All-electric ship; economic and resilient operation; joint voyage and energy management; safe return to port; two-stage optimization framework

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Marine power systems are more vulnerable than land-based power systems, posing a crucial challenge to shipboard power systems. This study proposes a two-stage optimization framework considering navigation, demonstrating the effectiveness of the scheme in economic and resilient operation.
Marine power systems are isolated from external grids, making them more vulnerable than land-based power systems. When ships are sailing on the ocean, complicated maritime environment and electrical component failure pose a crucial challenge to a safe and resilient shipboard power system. Different from fixed terrestrial microgrids, all-electric ships (AES) are mobile transportation vessels, complying with the navigation regulation of safe return to port. Thus, the economic and resilient operation needs to be considered from both energy and transportation aspects. In this regard, this study proposes a two-stage coordinated optimization framework for an AES, taking into account the impact of navigation. In the first stage, the normal operation mode follows the pre-voyage plan, which jointly optimizes voyage and energy management to reduce the whole voyage operation costs and greenhouse gas emissions simultaneously. In the second stage, a resilience-oriented optimization is developed to defend against emergencies by rescheduling navigation speed and generation. Furthermore, resistance during the whole AES navigation is also considered. Numerical results demonstrate the necessity of resistance impact on the voyage and the efficiency of the proposed operation scheme in economic and resilient operation for AESs.

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