Volume 66

Real-Time EMT Modeling and Coordinated Frequency Control of GW-Level Offshore Wind-Hydrogen Energy System Chunjun Huang, José Luis Rueda Torres

Abstract

Integrating gigawatt-scale offshore wind-hydrogen energy systems (OWHESs) is pivotal for the energy transition, yet their dynamic interactions and grid-support capabilities remain insufficiently explored. This paper addresses this gap by developing a real-time electromagnetic transient model of a 2 GW OWHES, which is implemented on a commercial real-time digital simulator (RTDS). Furthermore, a novel communication-free coordinated frequency control strategy is proposed, which synergistically harnesses the flexibility of the HVDC system, wind power plants, and electrolyzer plants. Real-time simulation results demonstrate the model’s ability to capture the OWHES dynamics. Moreover, results from a significant generation loss scenario demonstrate the proposed control’s superiority over existing methods, as it markedly improves the onshore frequency nadir and reduces the rate of change of frequency. This confirms its effectiveness in enhancing onshore frequency stability and showcases the potential of OWHESs as a valuable source of grid ancillary services.

Keywords real-time digital simulation, power-to-hydrogen plant, HVDC transmission, wind power plant