Neptune H2opZee

Introduction

H2OpZee, initiated by TKI OffshoreEnergy and further developed by RWE and Neptune, represents a pioneering effort in offshore hydrogen technology. Enersynt was invited to join the project as a preferred partner by H2SEA, tasked with conducting the feasibility phase comprising two sub-phases: appraise and select. The primary objective was to assess the technical feasibility of establishing a stable off-grid system, intending to connect to the mainland solely via gas pipelines for hydrogen transport.

Project background

The feasibility study primarily focused on evaluating the technical feasibility of a stable off-grid system, which had previously been implemented on a small scale. The first phase concentrated on technical feasibility, exploring various setups, while the second phase aimed for optimization in terms of weight, size, and costs.

Enersynt's involvement in both phases leveraged its expertise in HV systems and systems with a high degree of various power electronic converters.

Role of Enersynt

Throughout both phases, Enersynt played a key role in assessing different technical concepts and conducting dynamic simulations. This involved exploring various configurations for the Single Line Diagram, evaluating different types and brands of converters, optimizing the Power Management System setup, and integrating supplier specific dynamic simulations models into the overall system model.

Enersynt also proposed scenarios to assess system stability, including a black-start scenario, to ensure the resilience of the off-grid system under diverse circumstances.

Conclusion

The feasibility study demonstrated that with the implementation of various setups, the complete system could achieve stability, leading to the selection of the most preferred design. Additionally, Enersynt explored the possibility of integrating nearby offshore wind farms to avoid incorporating energy storage systems; however, this approach proved unfeasible for this specific project.

Ultimately, the collaborative efforts of the H2OpZee stakeholders, have paved the way for advancements in offshore hydrogen systems, positioning them as a viable solution for sustainable energy production and transportation.