Learning path · 11 lessons

Deliver power to customers

Explain why a plant can serve enough annual energy while its distribution network still needs electrical checks.

Start at the first lesson or jump to a question below. Each lesson has a plain explanation, a diagram you can change, and the calculation with its assumptions. No account or installation needed.

1. 01Plant sizing and network checksEnergy adequacy and acceptable voltage are separate design checks.
2. 02Distribution network designFollow power from the source through feeders and service drops.
3. 03Conductor size and network costCompare voltage drop and cost while holding the route fixed.
4. 04Radial, ring & meshThree network shapes, and what a fault does to each.
5. 05Voltage dropWhy the voltage falls along a feeder, and what controls it.
6. 06Power through a lineTwo voltages and an impedance set P, Q and direction.
7. 07Load modelsConstant power, current or impedance — and why the choice matters.
8. 08Unbalance & neutral currentUnequal phase loads, and where the difference flows.
9. 09Power flow basicsWhat the study answers, what it needs, and what it returns.
10. 10Protection zonesEvery meter protected twice: primary first, backup in reserve.
11. 11TCC curves & gradingTime–current curves, and devices that wait their turn.