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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