makeYbus uses one-indexing

[priyald17]

makeYbus fails when using pypower test cases due to one-indexing issues. For instance, for:

import pypower.api as pp ppc = pp.case14() baseMVA, bus, branch = ppc['baseMVA'], ppc['bus'], ppc['branch'] pp.makeYbus(baseMVA, bus, branch)

The output is
buses must appear in order by bus number Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/priyadonti/anaconda2/envs/acopf/lib/python3.7/site-packages/pypower/makeYbus.py", line 71, in makeYbus Ct = csr_matrix((ones(nl), (range(nl), t)), (nl, nb)) File "/Users/priyadonti/anaconda2/envs/acopf/lib/python3.7/site-packages/scipy/sparse/compressed.py", line 51, in __init__ other = self.__class__(coo_matrix(arg1, shape=shape)) File "/Users/priyadonti/anaconda2/envs/acopf/lib/python3.7/site-packages/scipy/sparse/coo.py", line 192, in __init__ self._check() File "/Users/priyadonti/anaconda2/envs/acopf/lib/python3.7/site-packages/scipy/sparse/coo.py", line 274, in _check raise ValueError('column index exceeds matrix dimensions') ValueError: column index exceeds matrix dimensions

FIXES:

Line 66 should be
f = branch[:, F_BUS] - 1
and line 67 should be
t = branch[:, T_BUS] - 1

Additionally, the check in line 35 should be
if any(bus[:, BUS_I] != list(range(1, nb+1))):

[rwl]

The column bus[:, BUS_I] isn't necessarily a one-based index. It is a positive integer to identify the bus:

https://github.com/rwl/PYPOWER/blob/master/pypower/caseformat.py#L47

The ext2int function will convert to zero-based, consecutive indexing and int2ext will convert back again.

[WoodpeckerBaby]

@rwl

Bus 1 to bus 6 is not in the range of 0 to 5 man! That throws an error.

For running

Ybus, _, _ = makeYbus.makeYbus(thisCase["baseMVA"], thisCase["bus"], thisCase["branch"])

buses must appear in order by bus number
Traceback (most recent call last):
File "...main.py", line 27, in
Ybus, _, _ = makeYbus.makeYbus(
^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/pypower/makeYbus.py", line 71, in makeYbus
Ct = csr_matrix((ones(nl), (range(nl), t)), (nl, nb))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/scipy/sparse/_compressed.py", line 53, in init
self._coo_container(arg1, shape=shape, dtype=dtype)
File "/usr/local/lib/python3.11/site-packages/scipy/sparse/_coo.py", line 197, in init
self._check()
File "/usr/local/lib/python3.11/site-packages/scipy/sparse/_coo.py", line 286, in _check
raise ValueError('column index exceeds matrix dimensions')
ValueError: column index exceeds matrix dimensions

This is the bus print out
[[ 1. 2. 0. 0. 0. 0. 1. 1.05 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]
[ 2. 3. 0. 0. 0. 0. 1. 1.05 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]
[ 3. 2. 0. 0. 0. 0. 1. 1.05 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]
[ 4. 1. 90. 60. 0. 0. 1. 1. 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]
[ 5. 1. 100. 70. 0. 0. 1. 1. 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]
[ 6. 1. 90. 60. 0. 0. 1. 1. 0. 400.
1. 1.05 0.95 0. 0. 0. 0. ]]

DC and AC power flows are working.

Why the FDPF can't take the regular case object ppc like the others?

[rwl]

ext2int

[WoodpeckerBaby]

ext2int

It's not very well documented.

Could you please update the fdpf() function to take a regular ppc object like opf() and dcpf()?

I believe the matpower version can.