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Fix makeBdc function in makeBdc.py #32

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Fix makeBdc function in makeBdc.py #32

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4 changes: 2 additions & 2 deletions pypower/makeBdc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -60,11 +60,11 @@ def makeBdc(baseMVA, bus, branch):
t = branch[:, T_BUS] ## list of "to" buses
i = r_[range(nl), range(nl)] ## double set of row indices
## connection matrix
Cft = sparse((r_[ones(nl), -ones(nl)], (i, r_[f, t])), (nl, nb))
Cft = sparse((r_[ones(nl), -ones(nl)], (i, r_[f, t]-1)), (nl, nb))

## build Bf such that Bf * Va is the vector of real branch powers injected
## at each branch's "from" bus
Bf = sparse((r_[b, -b], (i, r_[f, t])), shape = (nl, nb))## = spdiags(b, 0, nl, nl) * Cft
Bf = sparse((r_[b, -b], (i, r_[f, t]-1)), shape = (nl, nb))## = spdiags(b, 0, nl, nl) * Cft

## build Bbus
Bbus = Cft.T * Bf
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