unbalance_percent (parameter of res_bus_3ph) - used formula? (V0/V1) or (V2/V1)?

[recklessAxolotl]

Hello, I have a question about the result parameter "unbalance_percent" of res_bus_3ph.

How is this calculated in pandapower? Documenation says it's V0/V1(100%) according to IEC 62749.
I have no access to IEC 62749, but everything i can find says according to IEC it is calculated like: 100%(V2/V1)
It also looks like that's the case for pandapower: see b44dc52
I don't know how to find it in the source code.
Can anybody please clarify or hint where I could look it up in the code?
Thank you

[recklessAxolotl]

*the link I provided seems to show an outdated version of the code, found it via google search. So I'm still not sure which formula is actually used for the parameter.

[recklessAxolotl]

Ah, I think I found the current one in the master branch (v2.14.6)
https://github.com/e2nIEE/pandapower/blob/master/pandapower/results_bus.py#L62

net["res_bus_3ph"]["unbalance_percent"] = np.abs(V012_pu[2, :]/V012_pu[1, :])*100

Looks like it's really 100*(|V2|/|V1|)

So afaik the documentation is incorrect there and should be corrected.