Study On Electrolytic Characteristics Of Hydrogen Production System In Electrolytic Water Of Wind Power

The hydrogen production system of wind power electrolytic water provides a new idea for local absorption of abandoned wind power,and is also one of the important hot spots to replace traditional energy and develop clean energy in the future.Based on this background,the electrolysis characteristics of wind power electrolytic water hydrogen production system are studied from macro and micro angles,and the experiments of controlling the fluctuation voltage and fluctuation current under different wind speed conditions are carried out macroscopically.The electric field distribution and component distribution in the water electrolyzer under wind power condition are studied.Firstly,from the macro perspective,the hydroelectric hydrogen production experiment system of electrolytic water controls the input voltage and input current of the wind speed collected at different times,and the influence of wind power on the electrolysis characteristics of the electrolytic aqueous hydrogen production system is studied.The results show that the electrolytic hydroproduction system reaches 18 V.At the same time,when the input voltage changes suddenly,that is,the wind speed changes instantly,the electrolytic current and power surge instantly,and then gradually return to the normal electrolytic state,such phenomenon will cause too large current,affect the electrolytic process,and even lead to safety problems.0.1 A,of 8 m L/min.for the input current range of 0 ～ 3 A.When the voltage range of 22 V～ 30 V,is 0.85 A～ 2.85 A,the energy efficiency factor of the electrolytic hydrohydrogen system is 70 % ～ 50 %.The size of hydrogen flow will increase with the increase of voltage or current.Comparing the magnitude of hydrogen flow with the current and voltage,we will find that the factors that cause the magnitude of hydrogen flow are mainly related to the current,and the voltage is a secondary factor.Secondly,we studied the electric field distribution of the hydrolysis tank under the wind power working conditions,and studied the influence of the hydrogen production rate.The geometric modeling of the PEM cell by Solid Works,simulation calculation by Fluent,and the voltage distribution,current density distribution and component distribution at the micro level by steady state simulation and transient simulation.The analysis found that hydrogen was first produced in the cathode catalytic layer,mainly concentrated in the diffusion layer,and the best electrolytic voltage of the single electrolytic cell should be between 2 V～ 2.4 V.Under wind power condition,when the voltage of single layer electrolytic chamber is1.6 V～ 1.8 V,the water consumption rate is equal.The hydrogen mass fraction on the same current plane is proportional to the current density size,where the cathode electrode is the maximum near the contact area of the diffusion layer,and the hydrogen mass fraction in the region reaches the maximum value.Based on the macro and micro aspects,the whole and internal electrolysis characteristics of the wind power electrolytic water hydrogen production system are studied,which provides a reference for improving the electrolysis efficiency and the stable operation of the electrolytic water hydrogen production system.And the structure design of electrolytic cell provides a certain reference basis.