PSCAD/EMTDC Modeling of Fuel Cell and Electrolyzer for Frequency Response Analysis

This paper explores the dynamic modeling and simulation of a Fuel Cell and Electrolyzer Cell system within the PSCAD/EMTDC environment, emphasizing its potential for frequency stabilization in modern power grids. This study integrates the Fuel Cell and Electrolyzer Cell system with DC/DC converters, and inverters to assess its performance in mitigating frequency deviations during rapid load variation events. For this assessment, a PSCAD/EMTDC-based model is applied to the WECC 9-bus system, considering two distinct characteristics: (1) Time Delay, where the activation of the Fuel Cell and Electrolyzer Cell is delayed following a load change, and (2) Ramp Rate, where the rate of power output adjustment is controlled during load fluctuations. Simulation results demonstrate that the Fuel Cell and Electrolyzer Cell system, modeled in PSCAD/EMTDC, can effectively stabilize grid frequency, providing a faster and more reliable response compared to traditional synchronous generator-based governor systems.