Assessment of a Compressed Air Energy Storage System using gas pipelines as storage devices in Chile
| Autor: | Aldo Barrueto, Patricio Valdivia, Danilo Estay, Leonardo Gacitúa, Rodrigo Barraza, David Saldivia |
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| Rok vydání: | 2020 |
| Předmět: |
Marginal cost
Compressed air energy storage 060102 archaeology Petroleum engineering Renewable Energy Sustainability and the Environment business.industry 020209 energy 06 humanities and the arts 02 engineering and technology Pipeline (software) Energy storage Renewable energy Pipeline transport 0202 electrical engineering electronic engineering information engineering Environmental science 0601 history and archaeology Electricity Natural gas pipelines business |
| Zdroj: | Renewable Energy. 147:1251-1265 |
| ISSN: | 0960-1481 |
| Popis: | Some of the existing natural gas pipelines in Chile are underutilized; thus, these reservoirs could be utilized as Compressed Air Energy Storage (CAES) systems taking advantages of fluctuations in the price of electricity related to the entrance of renewable energy sources in the electrical market. A thermodynamic and economic-optimization of CAES system using existing gas pipelines under different operating conditions is performed. Substations located in the proximity to existing gas pipelines are assessed as possible CAES locations. Throughout the day, the CAES system compresses air, charges the pipeline by buying energy during low prices, and expands the air, discharging the pipeline by selling energy when prices are high. One of the Northern substations (Taltal) shows the best results where more of the photovoltaic power plant are located; consequently, CAES is more profitable when high difference in marginal cost is present along the day, which happens on grids with high renewable share. Therefore, the daily variations of marginal costs should be a key parameter decision to operate the CAES plant. With higher marginal costs fluctuations throughout the day, CAES systems should become more attractive economically. |
| Databáze: | OpenAIRE |
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