2025-09-30 オークリッジ国立研究所
The RE-INTEGRATE grid modeling tool provides faster, more affordable analysis of real-world grid behavior to prevent cascading blackouts from wiping out power across wide areas, as seen here from space after Hurricane Helene. Credit: Andy Sproles/ORNL, using NASA satellite images; U.S. Dept. of Energy
＜関連情報＞
- https://www.ornl.gov/news/new-modeling-tool-advances-grid-reliability
- https://www.ornl.gov/sites/default/files/2025-09/RE_INTEGRATE_DAE_Solvers.pdf
RE-INTEGRATE EMTシミュレーションソフトウェア：DAEソルバーと自動化 RE-INTEGRATE EMT Simulation Software: DAE Solvers and Automation
Phani R V Marthi,Soumyajit Gangopadhyay,Kuan-Chieh Hsu,Jongchan Choi,Nilanjan Ray Chaudhuri,Suman Debnath
Abstract
Existing electromagnetic transient (EMT) simulation tools face challenges in accelerating EMT simulations, especially for very large-scale power networks. To tackle this issue, next generation EMT simulation tools such as REINTEGRATE EMT are being researched upon. Such tools should be equipped with automation capabilities and advanced numerical differential-algebraic equation (DAE) solvers. In this paper, the DAE solvers incorporated within the RE-INTEGRATE EMT simulation tool are discussed. In particular, a modified ODEINT-based DAE solver and the ARKODE solver from SUNDIALS are leveraged within RE-INTEGRATE EMT. In addition, the automation implemented within RE-INTEGRATE EMT to automate the DAE generation (replacing the need of manual discretization and assembling DAEs) is discussed. Different use cases were implemented using the RE-INTEGRATE EMT tool and were validated with respect to baseline simulations.
Index Terms—Electromagnetic Transient, EMT, differentialalgebraic equations, DAEs, stiff solvers, non-stiff solvers
