Dashboard › NCEES PE Power — Oct 2025 Blueprint › 8. Transmission and Distribution Analysis › B. Voltage regulation and support

B. Voltage regulation and support

Transformer voltage regulation, transmission-line modeling (ABCD parameters, Ferranti effect, SIL).

Lessons

Lesson 1

Voltage regulation across power factors

Why terminal voltage drops on lagging loads — and actually rises on leading loads.

Freshman ~8 min
Lesson 2

Transmission line modeling — short, medium-π, long with ABCD

Three lumped models by length, the hyperbolic ABCD form, surge impedance Z_c, SIL = V_LL²/Z_c, and the Ferranti effect on long lightly-loaded lines.

Junior ~12 min