Simulation Study And Optimization Matching Analysis Of Hebei Province's Wind- Photovoltaic-Hydrogen-Storage Energy System

With the rapid economic and social development and the increase in energy demand,the application of traditional fossil fuels has led to many environmental problems.Wind and solar energy have been vigorously developed,and wind-solar hydrogen energy systems have become hotspots in various countries.This study built a simulink model based on a wind-photovoltaic hydrogen test rig in a university in Hebei.At the same time,it used a sequential Monte Carlo method to consider uncertain factors from three aspects: system level,weather conditions,and internal equipment failure.Based on the above model,investigated the influence of environmental factors on system performance through sensitivity analysis,and changed the parameters to calculate the loss power supplied probability(LPSP)and proportion of redundant capacity(PRC)indicators for reliability evaluation.In order to obtain a configuration plan with both economy and reliability,this study proposed a HOMER + SA-PSO optimization algorithm was used for the optimal matching of the system.At the same time,the configuration results of typical regions in Hebei were compared and analyzed.The results show that compare with photovoltaic arrays,wind turbines had higher power generation efficiency,but insufficient power generation.In terms of the influence of environmental factors,the impact of ambient temperature on system performance was minimal,except for the effects of radiation intensity in January and December,both were higher than the wind speed,from the annual average level,the impact of different environmental factors was ranked as follows: radiation intensity> wind speed> ambient temperature;In terms of system reliability,photovoltaic power generation system was more reliable than the wind power generation system,the battery had a significant impact on LPSP,and the hydrogen energy storage device had no significant impact on it,but the PRC had a good reduction effect,and the load on the two both had significant effects;In terms of optimizing matching results,the optimization algorithm of HOMER+ SA-PSO could obtain accurate matching results with a fast convergence speed,and the dual energy storage method of battery + hydrogen could maximize the reliability of the system.At the same time for the typical regions of Hebei,North bashang grassland was the most suitable region for wind-photovoltaic-hydrogen-storage energy system,and could meed the system reliability requirements with the lowest cost capacityconfiguration,and the applicability of this system was the worst in the central and southern regions.This study has examined the influence of environmental factors on system performance,and performed reliability evaluation and optimization matching analysis at the same time to obtain the most feasible configuration scheme.It has provided new ideas and methods for the matching combination of wind-solar hydrogen energy systems.The design of the system has provided a theoretical basis.