MATLAB code for a course on the control of synchronous generators.

Figure 1. Mechanical and electrical torques in a generating unit. ¹

Automatic generation control (AGC) is the name given to a control system having three major objectives: ¹

1. To hold system frequency at or very close to a specified nominal value (e.g., 50 or 60 Hz).
2. To maintain the correct value of interchange power between control areas. 3. To maintain each unit’s generation at the most economic value.

Figure 2. Tie-line bias supplementary control for two areas. ¹