Design And Capacity Configuration Optimization Of Compact Wind-Solar Hybrid Power Generation System

Wind and solar are clean and renewable sources of energy with the advantages of wide distribution and abundant conservation,and there is little pollution to the environment during development and utilization.Moreover,these two resources have natural complementary characteristics in time and space.The research and development of windsolar hybrid power generation system(WS-HP-GS)has important theoretical significance and engineering value for the sustainable development of energy.This paper takes the WSHP-GS as the research object,and takes the system structure optimization design and system capacity configuration optimization as the research content,so the research on the wind and solar hybrid power generation technology was conducted.The main research contents are as follows.Aiming at the structural drawbacks that the conventional WS-HP-GS occupied a significant amount of space and was inability to adjust the tilt angle of the solar panel,a compact spherical WS-HP-GS was proposed.By installing the light and flexible solar panels that can be bent arbitrarily on the surface of vertical wind turbine blades,the optimal structural combination of wind turbine blades and solar panels can be achieved without changing the design curvature of the original wind blade.First,a appreciate blade airfoil and wind rotor profile were selected reasonably based on the structure of vertical axis wind turbine and the force analysis of the blade.Then,the effect of the structural parameters,such as the radius of wind rotor,the chord length of airfoil,and the blade installation angle,on turbine energy efficiency were intensively investigated,thereby determining the initial value.Finally,a three-dimensional model of the WS-HP-GS was constructed in Solidworks platform.To improve the rotor power coefficient of the proposed spherical WS-HP-GS,the flow field numerical simulation was conducted.First,the computational domain of the wind field was determined,and the overall computational grid was generated in blocks in ICEM CFD.Then,the k-ε turbulence model and sliding mesh technology were used to perform the numerical simulation research of the wind rotor with different structural parameters in FLUENT.Finally,a comparative analysis among the velocity contour,pressure contour,and wind energy utilization rate was conducted in CFD POST,thereby achieving the optimal design parameters.To improve the power supply reliability and economic benefits of the WS-HP-GS,a chaotic grey wolf optimizer based on the adaptive convergence factor was proposed to reasonably configure the capacity of the hybrid renewable system.The detailed mathematical model of each power generation unit of the WS-HGS was presented.The goal of the multi-objective optimization model was to minimize the total operation cost of the system,and the model considered comprehensively the power balance constraints,the energy constraints,and the number of generating units’ constraints,etc.Combined with the meteorological data and load power demand of the installation site,the improved grey wolf optimizer was applied to finally calculated the optimal configuration of the wind turbine,photovoltaic panel,and storage component.A new installation method was adopted to construct an spherical WS-HP-GS in this paper,which overcomes the difficulties of large construction land and high investment costs of conventional WS-HP-GS and provides a certain reference for the optimal design and practical application of WS-HP-GS.The research deserves significant engineering practical studying.