Dr Zimmerman,I would like to share with you an interesting observation. Suppose
a line connecting bus 1 and bus 2. The power comes out of bus1, and goes into
bus 2. So, 10MW come out of bus1, and 8MW go into bus2.The 2 MW is losses.This
sounds logical.
However, there are cases in multibus systems, where across a line K-L, the flow
coming out of busK is 10MWand the flow coming into busL is - 8MW. So in this
case busK sends 10MW and busL sends 8MW.Is there a meaning in this?
Also, there are cases where both powers are negative.
I haven't got the files to send them to you, but in my experience I have seen
such cases occur with MatPower, thoughI do not remember the versions.
So the question is generalized into : Can there be cases where the power that
comes out of one bus and goes into another bus of the same line, are of the
same sign?Is there any physical meaning into this ?
Thank youSyros Gian
