Power Systems Engineering Research Center

Project Summaries

Power Markets

Analysis of Power System Operational Uncertainty from Gas System Dependence (M-36)

Summary The heavier reliance on natural gas for electricity generation raises increasing power system security concerns because gas-fueled generators may be subject to gas supply shortages and/or high spot market prices. While under FERC directives the industry has undertaken appropriate steps to better align the gas supply plans with the forecast electricity loads, the gas supply issue has become a challenging uncertainty that must be considered explicitly in power system operations. The goals of this project are to analyze the impacts of the uncertainty created by gas supply vulnerabilities and to assess the risks that emanate from the unit commitment/dispatch schedules. The interpretation of the analysis and the risk assessment results with intuitively meaningful presentation of the information will allow the formulation of appropriate strategies to address the issues associated with the gas supply/cost uncertainty. Study of the impacts of the gas uncertainty on the grid operational flexibility (GOF) for systems with deep penetration of renewable resources will allow a practical assessment of the extent of GOF change due to gas shortage issues and the identification of GOF shortfalls that can result in power system insecurity.
Academic Team Members Project Leader: Sarah Ryan (Iowa State University, smryan@iastate.edu)
Team members: George Gross (University of Illinois at Urbana-Champaign, gross@illinois.edu))
Industry Team Members Mirrasoul J. Mousavi (ABB), Floyd Galvan (Entergy), Mahesh Morjaria (First Solar), Lei Fan (GE Energy Consulting), Devin Van Zandt (GE Energy Consulting), Orlando Ciniglio (Idaho Power), Tongxin Zheng (ISO-NE), Mark Westendorf (MISO), Ben Kroposki (NREL), Muhammad Marwali (NYISO), Gary Helm (PJM), Jianzhong Tong (PJM), Jay Caspary (SPP), Yohan Sutjandra (The Energy Authority)