Coral
Reliability Analysis and Resource Adequacy
About Coral
Coral is a composite reliability analysis and resource adequacy assessment tool that evaluates the reliability of composite supply (generation-transmission) in large-scale systems. It has a special focus on renewable sources and storage devices. Coral was developed to run independently, with or without operational planning, or as an auxiliary subprocess within an expansion planning process.
Cutting-edge methodology
Efficient implementation of reliability assessment algorithms, with realistic representation of small-scale storage devices.
Component representation
Stochastic models, a wide set of power system devices, and customizable components with high flexibility.
Hourly simulation
Hourly discretization to ensure accurate representation of fast-dynamic variables, such as renewable sources.
Integration with Time Series Lab
Creation of hourly scenarios for renewable sources, time series manipulation, and construction of multi-state Markov models.
Integration with SDDP and OptGen
Evaluation of the reliability of operating policies and inclusion of reliability criteria in the expansion planning process.
Scalability analysis for large-scale systems
Efficiently runs in parallel computing environments and is available on PSR Cloud.
Coral assesses system adequacy
Integration with SDDP and OptGen
With Coral, it’s possible to evaluate the reliability and resource adequacy of operating policies generated by SDDP, also considering the associated hydrological uncertainty. Coral uses not only SDDP’s input databases but also its output scenarios, when necessary, to analyze the reliability of a given policy in a hydrothermal system. Various decision variables can be considered, such as reservoir levels, thermal power plant dispatch, battery storage levels, among others.
Coral also allows for the inclusion of reliability criteria in the expansion planning process carried out by OptGen. The integration between OptGen and Coral enables the incorporation of minimum security constraints as a planning criterion. This way, it’s possible to evaluate the benefit of each project both in terms of reducing operating costs and increasing the overall system reliability.
Coral is distributed as an add-in for SDDP and OptGen models
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