makeYbus

makeYbus(baseMVA, bus, branch)

makeYbus() - Builds the bus admittance matrix and branch admittance matrices.

[YBUS, YF, YT] = MAKEYBUS(MPC)
[YBUS, YF, YT] = MAKEYBUS(BASEMVA, BUS, BRANCH)

Returns the full bus admittance matrix (i.e. for all buses) and the
matrices YF and YT which, when multiplied by a complex voltage vector,
yield the vector currents injected into each line from the "from" and
"to" buses respectively of each line. Does appropriate conversions to p.u.
Inputs can be a MATPOWER case struct or individual BASEMVA, BUS and
BRANCH values. Bus numbers must be consecutive beginning at 1
(i.e. internal ordering).

See also makeJac(), makeSbus(), ext2int().