Editorial Department of Power Generation Technology
Doi
Abstract
ObjectivesThe grid-connected operation of large-scale wind turbines increases the risks of sub-synchronous oscillation (SSO) in power systems, to address these issues, this study conducts an in-depth analysis of the effect of hydrogen production systems on the characteristics of SSO of wind power system.MethodsFirstly, the models of doubly fed induction generator system, series-compensated transmission system, and hydrogen production system are established. Building on this, based on the internal thermodynamic and electrochemical dynamic characteristics of the electrolyzer in the hydrogen production system, an electromagnetic transient (EMT) model of the hydrogen production device is established on the PSCAD/EMTDC simulation platform. Finally, it is integrated into a doubly fed induction generator with series compensation for external transmission to conduct time-domain simulation analysis.ResultsThe hydrogen production system participates in the SSO of the system under specific control parameters. The integration of the hydrogen production system into the long-distance transmission system of wind power—as a clean energy solution—can mitigate SSO in the grid-connected system to a certain extent, thereby offering a new approach to addressing SSO issues.ConclusionsThe integration of the hydrogen production system improves the damping of the wind-hydrogen coupled grid-connected system, leading to improved system stability
