Hydro-battery Hybrids – A Case for Holistic Assessment of Hybrid Energy Systems

Conference · Fri Dec 30 04:00:00 EST 2022

DOI:https://doi.org/10.1109/EESAT55007.2022.9998036· OSTI ID:1922438

Chalishazar, Vishvas H. ^[1]; Harnish, Ryan A. ^[1]; Bhatnagar, Dhruv ^[1]; Somani, Abhishek ^[1]; Bellgraph, Brian J. ^[1]

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1. BATTELLE (PACIFIC NW LAB)

With increasing penetration of renewable energy resources like solar and wind, the flexibility offered by the hydropower generation facilities would be instrumental in providing grid reliability. However, hydropower’s capabilities are often constrained to meet asset management targets and environmental flow requirements. To meet these necessary requisites while simultaneously being able to utilize hydropower’s full potential, hydro plus battery hybrids offer a logical solution. However it is often challenging to make the case for economic feasibility of hydro-battery hybrids at the required scale of battery storage. To that end, this paper proposes a multi-objective optimization framework to maximize advantages of hydro-battery hybrid systems from three different avenues: new market opportunities, environmental benefits and machine wear and fatigue. Using an illustrative case study of a peaking plant, we simulate hydropower operations for with and without 120 MWh of battery storage for four different simulated flow patterns ranging from peaking operations to run-of-the-river operations and two intermediate flow patterns in between. The results demonstrate that hybridizing the hydropower plant can potentially generate additional revenue while simultaneously enable more environmental friendly operations and reduce the overall machine wear and tear.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1922438
• Report Number(s): PNNL-SA-174725
• Country of Publication: United States
• Language: English