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Title: Real-time co-simulation of adjustable-speed pumped storage hydro for transient stability analysis

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 article 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.
ORCiD logo [1] ;  [2] ;  [1] ;  [1] ;  [3] ; ORCiD logo [4] ;  [4] ;  [5]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Univ. of Texas, Austin, TX (United States). Center for Electromechanics
  3. Commonwealth Edison, Chicago, IL (United States)
  4. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  5. MWH-Stantec, Chicago, IL (United States)
Publication Date:
Report Number(s):
NREL/JA-5D00-70294; INL/JOU-16-40481
Journal ID: ISSN 0378-7796
Grant/Contract Number:
AC36-08GO28308; AC07-05ID14517
Accepted Manuscript
Journal Name:
Electric Power Systems Research
Additional Journal Information:
Journal Volume: 154; Journal Issue: C; Journal ID: ISSN 0378-7796
Research Org:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind and Water Technologies Office (EE-4W)
Country of Publication:
United States
24 POWER TRANSMISSION AND DISTRIBUTION; adjustable speed; doubly-fed induction machine; digital real-time simulator; real-time simulation; power systems; transients; co-simulation; hydrodynamics; hydroelectric power generation; power system stability; 13 HYDRO ENERGY; Adjustable-speed; Real-time simulations; Transient Stability
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1409696