Stevenson J. Power system analysis
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CHAPTER 13 ECONOMIC OPERATION OF POWER SYSTEMS
Equations (13.51) and (13.52) can be rearranged into vector-matrix form
(
l
-
B
I
O
)
P
�2
(1
-
B
20)
b
l
-
-
A
b
2
--
A
(
13.53)
and
this is the set of equations for Units 1 and 2. When the system has K
sources as in Eq. (13.42), the partial derivative of PI_ with respect to
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