This article proposes a nonlinear frequency dynamic response control strategy for proton exchange membrane (PEM) electrolyzer

taking into account the hydrogen in oxygen

to address the difficulty of frequency control in the power system in load safety and rapid response. Firstly

based on the mass conservation equation

energy conservation equation

anode and cathode pressure equation

and chamber U-I equation

a one-dimensional dynamic model of the PEM electrolyzer mechanism is established

and a mathematical analytical model of the hydrogen in the anode oxygen of the electrolyzer is obtained; secondly

based on the theory of nonlinear control with objective holographic feedbacks (NCOHF)

a frequency response strategy for PEM electrolyzer considering hydrogen in oxygen is proposed; Finally

using a four-machine two-zone simulation system with 25% wind power penetration rate

frequency response analysis is conducted under load step and wind power fluctuation conditions

verifying the superiority of our method in frequency dynamic response compared with traditional droop

accelerated droop

and frequency change rate control.