| Aiming at the power supply problem of island that public power grid can not reach,the paper proposes integrated wind-photovoltaic-hydrogen-storage off-grid power supply system which is mainly composed of wind turbine power supply sets,photovoltaic power supply sets,lithium battery pack,proton exchange membrane fuel cells and electrolysis device for hydrogen production.In this system,the electricity that is generated from wind,light,hydrogen and other clean energy meets the load.The lithium battery and the energy storage closed-loop that is composed of fuel cells and electrolysis device for hydrogen production absorb or supply the surplus or shortage of energy.By the way,to make system keep long-term working and being self-sufficiency.First of all,the paper gives the overall structure of the system,and proposes the quantum-behaved particle swarm optimization algorithm based on chaos.In case study,the optimal sizing model is established by combing the sizing of each unit in the.system with the system structure scheme.Then,according to feature of system,the system status is divided into three types.The energy management algorithm of multi-status migration based on fuzzy control is proposed.Case results show that the energy management algorithm can reasonably manage the energy flow.As a result,the system controller and the communication protocal are designed.Then,the real time monitoring system include the PC client software and the remote service software is developed for recording data and controling system.Finally,the system prototype totally works for 6 months.As shown by data,the system achieves the desired goal and lays the foundation for the promotion of industrialization. |
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