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3509. Operational benefit of transforming cascade hydropower stations into pumped hydro energy storage systems
Invited abstract in session TA-22: Optimization of energy storage systems, stream Energy Management.
Tuesday, 8:30-10:00Room: 81 (building: 116)
Authors (first author is the speaker)
| 1. | Parinaz Toufani
|
| INSEAD | |
| 2. | Emre Nadar
|
| Bilkent University | |
| 3. | Ayse Selin Kocaman
|
| Industrial Engineering, Bilkent University |
Abstract
This study evaluates the potential benefit of retrofitting existing conventional cascade hydropower stations (CCHSs) with reversible turbines so as to operate them as pumped hydro energy storage (PHES) systems. We examine the energy generation and storage problem for a CCHS with two connected reservoirs that can be transformed into a PHES system in a market setting where the electricity price can be negative. We formulate this problem as a stochastic dynamic program (SDP) under uncertainty in the streamflow rate and electricity price. We analytically derive an upper bound on the profit improvement that can be obtained from the PHES transformation. We conduct numerical experiments with data-calibrated time series models and observe that the PHES system provides a greater benefit under more limited streamflow conditions or more frequently observed negative prices.
Keywords
- Stochastic Optimization
- OR in Energy
- Programming, Dynamic
Status: accepted
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