The Flexible Energy Scheduling Tool for Integrating Variable Generation (FESTIV) is a model that simulates the behavior of the electric power system to help researchers understand the impacts of variability and uncertainty on power system operations. FESTIV includes security-constrained unit commitment, security-constrained economic dispatch, and automatic generation control sub-models.
FESTIV is a multiple-timescale, interconnected simulation tool. Each sub-model is connected to subsequent sub-models such that the output of one sub-model serves as the input to the next. FESTIV is completely configurable so that the effects of different operating temporal resolutions and operating strategies can be explored. FESTIV not only produces economic metrics but also produces reliability metrics. This enables FESTIV to fully investigate the trade-offs in economic benefits, reliability benefits, and incentive structures.
Electric power system operators use a variety of scheduling techniques to match electricity generation and demand. When the total supply of energy is different from the total demand, system operators must deploy operating reserves (including regulating, following, contingency, and ramping reserves) to correct the energy imbalance. The way they do this and, especially, the way they plan for this can affect the reliability and efficiency of the power system—particularly if it includes large amounts of variable generation. FESTIV allows researchers at NREL to explore different operating reserves strategies on system operations.
For More Information
For more information about FESTIV and the impact of variable generation on operating reserves, see the following resources. Additional publications can be found in the NREL Publications Database.
A Flexible Power System Operations Simulation Model for Assessing Wind Integration
This paper describes the FESTIV model, which mimics operator behavior using a combination of security-constrained unit commitment, security-constrained economic dispatch, and automatic generation control programs.
Operating Reserves and Variable Generation: A Comprehensive Review of Current Strategies, Studies, and Fundamental Research on the Impact That Increased Penetration of Variable Renewable Generation Has on Power System Operating Reserves
This report includes a survey of operating reserves and how they are managed internationally in system operations today and how new studies and research are proposing they may be managed in the future with higher penetrations of variable generation.
Evolution of Operating Reserve Determination in Wind Power Integration Studies
This paper describes assumptions and methods used to calculate the different types of reserves and explains how these methods have evolved.
Operating Reserves and Wind Power Integration: An International Comparison
This paper provides a high-level international comparison of methods and key results from operating practice and integration analysis.
Quantifying the Operational Benefits of Conventional and Advanced Pumped Storage Hydro on Reliability and Efficiency
This paper uses FESTIV to explore the benefits of adjustable-speed and single-speed pumped storage hydro on system operations.