Real-Time Co-Simulation of Adjustable-Speed Pumped Storage Hydro for Transient Stability Analysis

Eduard Muljadi, Vahan Gevorgian, Manish Mohanpurkar, Abdelhamid Ouroua, Rob Hovsapian, Yusheng Luo, Mohit Singh, Peter Donalek

Research output: Contribution to journalArticlepeer-review

37 Scopus Citations


Pumped storage hydro (PSH) based generation of electricity is a proven grid level storage technique. A new configuration i.e., adjustable speed PSH (AS-PSH) power plant is modeled and discussed in this paper. Hydrodynamic models are created using partial differential equations and the governor topology adopted from an existing, operational AS-PSH unit. Physics-based simulation of both hydrodynamics and power system dynamics has been studied individually in the past. This paper demonstrates a co-simulation of an AS-PSH unit between penstock hydrodynamics and power system events in a real-time environment. Co-simulation provides an insight into the dynamic and transient operation of AS-PSH connected to a bulk power system network. The two modes of AS-PSH operation presented in this paper are turbine and pump modes. A general philosophy of operating in turbine mode is prevalent in the field when the prices of electricity are high and in the pumping mode when prices are low. However, recently there is renewed interest in operating PSH to also provide ancillary services. A real-time co-simulation at sub-second regime of AS-PSH connected to the IEEE 14 bus test system is performed using digital real-time simulator and the results are discussed.

Original languageAmerican English
Pages (from-to)276-286
Number of pages11
JournalElectric Power Systems Research
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© 2017 The Author(s)

NREL Publication Number

  • NREL/JA-5D00-70294


  • Adjustable speed
  • Co-simulation
  • Digital real-time simulator (DRTS)
  • Doubly-fed induction machine
  • Hydrodynamics
  • Hydroelectric power generation
  • Power system stability
  • Power systems
  • Real-time simulation
  • Transients


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