The Research On Modeling And Optimal Control Of Wind/Photovoltaic Hydrogen System

Environmental pollution and energy shortages become the two major problems that human survival needs to be solved urgently at present.The research and development of clean and renewable energy has been paid more and more attention by all countries in the world.Distributed power generation is an important part of the sustainable development strategy of the national economy and environmental protection.It is also the only way to optimize the energy structure and promote the diversified development of energy.It's well known that the problems of voltage,frequency fluctuations and power quality caused by the fluctuations of renewable energy power generation.The paper has established the wind/photovoltaic hydrogen system with wind energy and solar energy as the main energy source for the purpose of solving the technical problems of large-scale wind power curtailment and photovoltaic power curtailment.The hybrid energy management system has the characteristics of multi-input multi-output,complex structure,many parameters.Thus,make use of each advantage of renewable energy and fuel cell and according to some experiences on hybrid management system in China and foreign countries,the technology of wind/photovoltaic hydrogen system based on micro grid control is used to improve the stability and reliability of the system.At the same time,it meets the demand of grid and hydrogen load,and realizes the power balance between grid and wind/photovoltaic hydrogen system.In this paper,the technical problems faced by the wind/photovoltaic hydrogen system are analyzed firstly,and the dynamic mathematical model of the subsystems of the system is established.The characteristics of the subsystem model are simulated and analyzed.Based on the model of system integration,a simulation experiment based on ANFIS control strategy is proposed to test the system characteristic analysis and control strategy of the constructed system in the grid running mode to test the reliability of the designed system model and control strategy,and to solve the grid operation mode system energy scheduling management issues.Finally,two different control strategies are used to simulate the system.The results show that the wind/photovoltaic hydrogen system model can reflect the characteristics of the system well,and the optimal control strategy based on ANFIS algorithm can optimize the energy flow efficiency of the system.Based on research of the above,this paper makes a research on wind/photovoltaichydrogen system which establishes the wind energy and solar energy as the main energy sources,fuel cell,electrolyzer and battery for the energy storage and the control strategy for it,can provide a certain guiding significance for the actual development of the system.