Technoeconomic Supplement of P2G Clusters with Hydrogen Pipeline for Coordinated Renewable Energy and HVDC Systems

TL;DR

This paper proposes a multistage coordinated planning model integrating renewable energy, HVDC, P2G clusters, and hydrogen pipelines, demonstrating that P2G enhances renewable energy utilization and economic benefits despite higher costs and uncertainties.

Contribution

It introduces a distributionally robust chance-constrained model for joint planning of renewable energy, HVDC, P2G, and hydrogen pipelines, considering variability and uncertainty.

Findings

P2G provides operational flexibility and economic benefits.

P2G enables an additional 24 GW renewable energy exploration.

P2G is more sensitive to uncertainties due to higher costs.

Abstract

Under the downward tendency of prices of renewable energy generators and upward trend of hydrogen demand, this paper studies the technoeconomic supplement of P2G clusters with hydrogen pipeline for HVDC to jointly consume renewable energy. First, the planning and operation constraints of large-capacity P2G clusters is established. On this basis, the multistage coordinated planning model of renewable energy, HVDCs, P2Gs and hydrogen pipelines is proposed considering both variability and uncertainty, rendering a distributionally robust chance-constrained (DRCC) program. Then this model is applied in the case study based on the real Inner Mongolia-Shandong system. Compared with energy transmission via HVDC only, P2G can provide operation supplement with its operational flexibility and long term economic supplement with increasing demand in high-valued transportation sector, which stimulates an extra 24 GW renewable energy exploration. Sensitivity analysis for both technical and economic factors further verifies the advantages of P2G in the presence of high variability due to renewable energy and downward tendency of prices of renewable energy generators. However, since the additional levelized cost of the P2G (0.04 RMB/kWh) is approximately twice the HVDC (0.02 RMB/kWh), P2G is more sensitive to uncertainty from both renewable energy and hydrogen demand.