Joint Generation and Demand-side Management for Shipboard Carbon Capture and Storage System

Currently, lots of research have revealed the great potentials of the land-based carbon capture and storage (CCS) system on the control of the greenhouse gas (GHG) emission. But when it comes to the shipboard applications, the CCS integration becomes rather complicated since very limited operating conditions onboard, especially for the shortage of power supply. Nowadays, the all-electric ship (AES), which uses electricity to meet both the propulsion and service loads, has become a trend for future ship designing due to higher efficiency and flexibility, as well as providing a better platform for CCS integration and paving a new way for maritime GHG emission control. To address the power shortage issue led by the CCS integration, this paper first incorporates the demand-side management on the propulsion load and a corresponding joint generation and demand-side management model is proposed. The mathematical model is formulated as a bi-level optimization after certain constraint decomposition and solved by the column and constraint generation algorithm. Extensive simulations demonstrate that, the proposed method is able to relieve the power shortage issue of shipboard CCS, and the corresponding carbon capture level increases from 86% to 93%.