Error in docs

[simnh]

Hey I found these lines:

oemof-solph/src/oemof/solph/components.py

Lines 315 to 320 in 34657e2

	Connect the invest variables of the input and the output flow.
	.. math::
	InvestmentFlow.invest(source(n), n) + existing = \\
	(InvestmentFlow.invest(n, target(n)) + existing) * \\
	invest\_relation\_input\_output(n) \\
	\forall n \in \textrm{INVEST\_REL\_IN\_OUT}

Should they be there, as it is not the Storage Investment Block? So there is no investment. Maybe copy paste error?

[uvchik]

Thanks @simnh Could you open a PR?

[simnh]

There is another error I found:

oemof-solph/src/oemof/solph/components.py

Lines 668 to 675 in 34657e2

	.. math::
	E(t) \leq E_{invest} \cdot c_{max}(t)
	* :attr:`min_storage_level`
	Rule for lower bound constraint for the storage content:
	.. math:: E(t) \geq E_{invest} \cdot c_{min}(t)

I can open a PR ...

[joroeder]

There is another error I found:

oemof-solph/src/oemof/solph/components.py

Lines 668 to 675 in 34657e2

	.. math::
	E(t) \leq E_{invest} \cdot c_{max}(t)
	* :attr:`min_storage_level`
	Rule for lower bound constraint for the storage content:
	.. math:: E(t) \geq E_{invest} \cdot c_{min}(t)

I can open a PR ...

What is the error? The existing capacity is missing, it must be: (E_{invest} + E_{exist}) ?

[simnh]

Yes I think so, I opened a PR.

[joroeder]

Hey I found these lines:

oemof-solph/src/oemof/solph/components.py

Lines 315 to 320 in 34657e2

	Connect the invest variables of the input and the output flow.
	.. math::
	InvestmentFlow.invest(source(n), n) + existing = \\
	(InvestmentFlow.invest(n, target(n)) + existing) * \\
	invest\_relation\_input\_output(n) \\
	\forall n \in \textrm{INVEST\_REL\_IN\_OUT}

Should they be there, as it is not the Storage Investment Block? So there is no investment. Maybe copy paste error?

Actually, there is such a constraint in the GenericStorageBlock:

oemof-solph/src/oemof/solph/components.py

Line 516 in 34657e2

def _power_coupled(block, n):

Maybe, it is supposed for some cases if you have a fixed nominal storage capacity and an investment Flow at In-and Outflow? couple these?