Information Technology Reference
In-Depth Information
Constraints on the state:
Q
min
Q
ð
x
;
t
Þ
Q
max
ð
3
Þ
x unspeci
ed position of drain.
Constraints on the output:
P
min
P
ð
F
;
t
Þ
P
max
ð
4
Þ
Constraints over the computing time:
Sample time: Te
¼
0
:
2s
Energy constraints:
Concerning the operation of electrical equipment, cost optimization of pumping
and turbine.
The constraints of operation:
As they may be related to the geometry of the system levels maximum, mini-
mum, and so on. How it should be managed to ensure the functions given to
him: instructions, etc.
The constraints of safety:
This may result in the need to keep such a volume of safety in reserve, ensuring
the supply in case of unforeseen demand or incidents on the network.
2.2 Operation Mode of the Irrigation Station
The general diagram of the hydraulic system is given by the following Figs.
2
and
3
:
Our station of irrigation is fed with an electrical network 400 V
ð
TRI
þ
N
þ
PE
50 Hz (Sommer
1996
).
The station of irrigation starting from the cabin, we can select the operating
process of the station through a selector with 6 positions
Þ;
50 Hz.
ð
TRI
þ
N
þ
PE
Þ;
0 Stop;
1 operation in Automatic mode;
2 operation in Semi-automatic mode;
3 operation in mode Forced;
4 operation in mode API;
5 operation in mode Open loop;
Then the selection of the operating process be described in this following.
(Fig.
4
)
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