Handbook of Electrical Engineering

AUTOMATIC VOLTAGE REGULATION 97

Table 4.3. Typical data for AVR control systems

Parameter Low Values

Typical

High

Ga 250 500 1500

Ta 0.01 0.04 0.1

Kf 0.02 0.06 0.1

Tf 1 0.1 0.4 0.6

Tf 2 0.3 1.5 2.5

Vmax 5.0 15.0 20.0

Vmin 0.0 0.0 0.0

Ke 1.0 1.0 1.0

Te 0.05 0.4 1.2

SE 75 0.45 0.75 0.96

SE 100 0.80 0.90 0.96

A 0.07 0.08 0.1

B 0.4 0.5 0.6

Gg 0.30.350.4

Tr 1 0.01 0.02 0.03

Tr 2 0.01 0.02 0.03

Kda 0.03 0.04 0.06

4.2.4 Typical parameter values for AVR systems

Table 4.3 shows typical per unit values for the gains, limits and time constants used in the automatic
voltage regulation systems for generators having ratings up to 50 MW.

Reference

1.Computer representation of excitation systems. IEEE Transactions, PAS 87, No.6, June 1968.