An Indian case study of hydrogen energy storage for electric grids with high penetration of renewable energy systems
Patel, Krunalkumar (2022)
Diplomityö
2022
School of Energy Systems, Konetekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2022121972488
https://urn.fi/URN:NBN:fi-fe2022121972488
Tiivistelmä
The functioning of an energy grid necessitates the ongoing matching of supply and demand for power. Maintaining a substantial capacity of backup/standby 'Peaker' power is the key strategy for coping with the fluctuation in renewable energy generation. Nevertheless, off-peak renewable energy generation is often reduced because it could be used or absorbed cheaply. Low-cost, practical energy storage might allow for the more efficient deployment of intermittent electric generating resources to elevated markets. The viability, energy system prices, and advantages of hydrogen energy storage (HES) integrated with the power grid are investigated in this proposed study. This study aims to shed light on the effects of adaptable hydrogen production in high participation from RES on electric grids for converting renewable power into low-carbon hydrogen. This method can assist balance the electric grid while offering an energy carrier for use in various energy applications.
Considering an excess of intermittent renewable power, this study discovered that using H2 as a storage medium round-trip energy arbitrage does not cost-viable. Because of the low round trip efficiency and high capital costs, investing in hydrogen-producing infrastructure for arbitrage purposes is inefficient. Selling H2 as a fuel for transportation can be an elevated revenue stream for otherwise underutilized generating capacity. Given an external market for H2 power, efficient expenditure in electrolysis and H2 storage capacity enables this value to be collected. Highly renewable systems may lower grid operating costs, boost renewables inclusion in power generation, and deliver sufficient hydrogen to run millions of electric vehicles at cents per kilometre comparable with petrol.
Considering an excess of intermittent renewable power, this study discovered that using H2 as a storage medium round-trip energy arbitrage does not cost-viable. Because of the low round trip efficiency and high capital costs, investing in hydrogen-producing infrastructure for arbitrage purposes is inefficient. Selling H2 as a fuel for transportation can be an elevated revenue stream for otherwise underutilized generating capacity. Given an external market for H2 power, efficient expenditure in electrolysis and H2 storage capacity enables this value to be collected. Highly renewable systems may lower grid operating costs, boost renewables inclusion in power generation, and deliver sufficient hydrogen to run millions of electric vehicles at cents per kilometre comparable with petrol.