pandapower

A Python library for modelling and analysing electrical grids, with validated models for lines, transformers, switches and other elements. It computes load flow, optimal power flow (OPF), short-circuit currents and state estimation, and supports topological searches on the network. Everything is driven from Python, so it is easy to build a grid from files, run thousands of scenarios and analyse the results. It suits power engineers at distribution companies, consultants and researchers working on renewable integration. There is no graphical interface — you work in code.