Novel Control Strategy for Multiple Run-of-the-River Hydro Power Plants to Provide Grid Ancillary Services

Eduard Muljadi, Vahan Gevorgian, Manish Mohanpurkar, Yusheng Luo, Rob Hovsapian, Vladimir Koritarov

Research output: NRELPresentation


Hydropower plant (HPP) generation comprises a considerable portion of bulk electricity generation and is delivered with a low-carbon footprint. In fact, HPP electricity generation provides the largest share from renewable energy resources, which include wind and solar. Increasing penetration levels of wind and solar lead to a lower inertia on the electric grid, which poses stability challenges. In recent years, breakthroughs in energy storage technologies have demonstrated the economic and technical feasibility of extensive deployments of renewable energy resources on electric grids. If integrated with scalable, multi-time-step energy storage so that the total output can be controlled, multiple run-of-the-river (ROR) HPPs can be deployed. Although the size of a single energy storage system is much smaller than that of a typical reservoir, the ratings of storages and multiple ROR HPPs approximately equal the rating of a large, conventional HPP. This paper proposes cohesively managing multiple sets of energy storage systems distributed in different locations. This paper also describes the challenges associated with ROR HPP system architecture and operation.
Original languageAmerican English
Number of pages15
StatePublished - 2017

Publication series

NamePresented at HydroVision International, 27-30 June 2017, Denver, Colorado

NREL Publication Number

  • NREL/PR-5D00-68582


  • energy storage systems
  • hydroelectric generation
  • run-of-the-river


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