Multi-source Energy Management of Maritime Grids

Abstract

Conventional maritime grids mostly only have one type of main power source. For example, seaports mainly rely on the main grid, and plenty of equipment is driven by fossil fuel which is supplied by the outside transportation network. For the ships, the main engine is the main power source and the generators are driven by the main shaft. However, with the development of transportation electrification, the capacities of maritime grids grow and electricity becomes the dominating energy form. Various efficient power sources are integrated for a more economic and environmental maritime grid. Nowadays, the main integrated power sources include battery, fuel cell, renewable energy, and many demand response tools can also act as “virtual power sources” to facilitate the operation of maritime grids. To coordinate multiple power sources, this Chapter focuses on the multi-source energy management methods of maritime grids. Various power sources integrated into maritime grids are illustrated in the first place, including the (1) main grid; (2) main engines; (3) battery and fuel cell; (4) renewable energy and demand response. Then the coordination between different power sources in maritime grids is described. At last, some practical cases are given to show the effects of multi-source energy management of maritime grids.