ANDES is a Python-based free software package for power system simulation, control and analysis. It establishes a unique hybrid symbolic-numeric framework for modeling differential algebraic equations (DAEs) for numerical analysis. Main features of ANDES include
- a unique hybrid symbolic-numeric approach to modeling with automatic numerical code generation for simulation
- a rich library of transfer functions and discontinuous components (including limiters, deadbands, and saturation) available for prototyping models, which can be effortlessly instantiated as multiple devices for system analysis
- comes with the Newton method for power flow calculation, the implicit trapezoidal method for time-domain simulation, and full eigenvalue analysis
- strictly verified models with commercial software. ANDES obtains identical time-domain simulation results for IEEE 14-bus and NPCC system with GENROU and multiple controller models. See the verification link for details.
- developed with performance in mind. While written in Python, ANDES comes with a performance package and can finish a 20-second transient simulation of a 2000-bus system in a few seconds on a typical desktop computer
- out-of-the-box PSS/E raw and dyr file support for available models. Once a model is developed, inputs from a dyr file can be immediately supported
- an always up-to-date equation documentation of implemented models
ANDES is currently under active development. Use the following resources, in addition to the tutorial, to get involved.
- Checkout the Notebook examples in the examples folder
- Try ANDES in Jupyter Notebook with Binder
- Read the online manual at https://andes.readthedocs.io
- Download the PDF manual at download
- Report issues in the GitHub issues page
- Learn version control with the command-line git or GitHub Desktop
This work was supported in part by the Engineering Research Center Program of the National Science Foundation and the Department of Energy under NSF Award Number EEC-1041877 and the CURENT Industry Partnership Program. ANDES is made open source as part of the CURENT Large Scale Testbed project.
ANDES is developed and actively maintained by Hantao Cui. See the GitHub repository for a full list of contributors.