Page 105 - Dynamics and Control of Nuclear Reactors

8.4 Control of a zero-power reactor 99

1.14 P
I
1.12 Pl
1.1
1.08
P/P(0) 1.06
1.04

1.02
1
0.98
0.96
0 10 20 30 40 50 60
Time (s)
FIG. 8.7
Response of a zero-power reactor to a reactivity disturbance with proportional (P) only,
integral (I) only, and proportional + integral (PI) control actions.

2.4
P
I
2.2 Pl

2

1.8
P/P(0) 1.6

1.4

1.2

1
0 10 20 30 40 50 60
Time (s)
FIG. 8.8
Response of a zero power reactor to a change in the power set point with proportional (P) only,
integral (I) only, and proportional + integral (PI) control actions.