Power Systems Explorer
Change a parameter. See what moves. Explore five foundational power-system ideas, then use the Readiness Kits to learn the reasoning and checks behind them.
Free to use, with no sign-up. These small, illustrative models show the behavior of each method; their assumptions are listed with each example.
Symmetrical components
Change the phase magnitudes and angles, or drag a phase tip. Watch the sequence sets recombine into the original phases.
Original phases
Positive sequence
Negative sequence
Zero sequence
Newton-Raphson power flow
Step through a two-bus solution and inspect how the mismatch changes with voltage and angle.
Per-unit bases
Change the bases while the physical load stays fixed. Compare coherent transformer bases with an independent HV base.
| Quantity | HV side | LV side |
|---|
Fault analysis
Choose a fault boundary and see which sequence networks contribute to the phase currents.
Sequence currents
Phase currents
Economic dispatch and commitment
Adjust demand and choose which units are committed. See the least-cost dispatch for that chosen commitment.
| Generator | Output | Limits | Incremental cost |
|---|