6.2 TWO-AREA STATE SPACE MODEL REPRESENTATION
The block diagram representation of a two area system is as shown in Fig. 6.4. State space variables for two-area load frequency control are
From block (2)
From block (3)
From block (4)
From block (5)
From block (6)
From block (7)
In the matrix, the form above nine equations are written as
Fig 6.4 Block diagram representation for state space model for two-area control
Where [x] = [x1, x2, x3, x4………x9]T is state vector, [U] = [U1, U2]T is control vector D = [d1, d2]T is a disturbance vector.
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