Long-Term Optimization for Multi-Energy System of Net-zero Energy Residential Area with Seasonal Hydrogen Storage

To address the seasonal mismatch between supply and demand in a net-zero residential area with multiple energy flows, this paper proposes a long-term optimization method that incorporates seasonal hydrogen storage (SHS). By leveraging the capability of hydrogen energy dispatch across seasons, the proposed method aims to minimize the comprehensive life cycle cost (CLCC) while maximizing energy self-sufficiency. A multi-modal utilization architecture is established, enabling the conversion of hydrogen to electricity and heat. The optimization model considers various cost components such as hydrogen supply chain cost, electricity trading, and carbon trading cost. The validity of the proposed approach is verified, highlighting the significance of a multimodal hydrogen energy utilization architecture and the benefits of considering seasonal trading.