If you are referring to the quantity that is printed as the "Losses
(I^2 * Z)" in the output, for each branch it is computed as,
loss = (Vf / tap - Vt) ^ 2 / (R + j X)
where Vf and Vt are the complex voltages at the "from" and "to" ends
of the branch, R and X are the series resistance and reactance of the
branch, and tap is the tap ratio for a transformer (1 otherwise). This
should give the losses in the series portion of the pi-model for the
branch. It does not include the shunt portions used to model line
charging.
--
Ray Zimmerman
Senior Research Associate
428-B Phillips Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645
On Oct 6, 2008, at 6:44 AM, jigna pandya wrote:
hello everybody,
i want to know that which method has been used to find active power
loss and reactive power loss in N-R power flow method in matpower?
thanks in advance
