Grid-connection and off-grid double-mode ship solar power generating system

Abstract

The invention relates to a grid-connection and off-grid double-mode ship solar power generating system which comprises a solar cell panel, a battery charger, a solar electric management device, an alternating current distribution cabinet, a countercurrent preventing device, a photovoltaic controller, a photovoltaic inverter and a storage battery, wherein the a photovoltaic controller, the photovoltaic inverter and the storage battery are respectively in communication connection with the solar electric management device through RS485. The solar cell panel is electrically connected to the storage battery and the photovoltaic inverter through the photovoltaic controller. In the photovoltaic inverter, an off-grid mode end of the photovoltaic inverter is connected with a ship secondary load through the alternating current distribution cabinet to form an off-grid loop, and the grid-connection mode output end of the photovoltaic converter is electrically connected to a node between a main ship bus bar and a main transformer to form a grid-connection loop. The battery charger is respectively and electrically connected with a ship main distribution board and the storage battery. The countercurrent preventing device is electrically connected with nodes from the main ship bus bar to the main transformer, and is connected with the photovoltaic inverter through an RS485 communication line. The grid-connection and off-grid double-mode ship solar power generating system can ensure the stable operation of a ship power system, and can utilize solar energy to generate power and reduce fuel consumption and exhaust emission to the maximum extent.

Description

technical field [0001] The invention relates to the field of photovoltaic grid-connected power generation, in particular to a solar photovoltaic grid-connected power generation system applied to large ocean-going ships, and belongs to the technical field of new energy applications for ships. Background technique [0002] In today's world energy structure, conventional energy reserves are rapidly depleting with the high development of human civilization. As the means of transport with the largest proportion of carrying capacity in transportation, ships are large energy consumers, as well as large polluters and greenhouse gas emissions. , the quality of its energy-saving effect has a great impact on the national economy. With the continuous and in-depth development of photovoltaic technology, its efficiency, reliability and stability have been greatly improved, so it has gradually shifted from the initial pure technical research to the field of practical application. The appl...

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Problems solved by technology

Due to the limited power generation of solar photovoltaic systems, for large ships, solar power generation systems can only be used as auxiliary propulsion power or domestic power

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