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Use different symbols for different classes #75
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I'm fine with the letter Z for impedance loads, maybe we can leave the "regular" PQ load without any additional symbol, I understand PQ loads are the default choice in power system studies. |
Not sure. Consider the load in ENTSOE model Maybe in the LoadPQVoltageDependence icon we show the numerical value of alpha? this will add signicant info. A related problem (in case I can open a separate ticket). in PowerGrids we have PowerFlow.PQbus as well, that is connector-compatible with LoadImpedancePQ and LoadPQVoltageDependence, so a user would infer that all of them can be used in either transient and power flow studies. I fear that a bullet-proof way to approach this would be using different connectors for power flow and transient studies, but this is overkill. I see in #54 that even though embedded power flow is successfully implemented, it will stay optional. So this issue will remain real. |
this is what I wrote an year ago on #54:
So, I had the impression that during transients studies constant impedance is more the norm than the exception. |
I add that Powergrids has many transformer models which, according to this ticket, should have different icons. |
I wonder if that won't make the diagrams too cluttered. I mean, you don't see the parameter names and much other information in the icon. Maybe seeing a transformer is enough? |
I share the same doubt with you. It would be an exception to the general rule that different models should have different icons. Have you seen any such exceptions anywhere? Moreover, MSL for electric diagrams follow rather strictly the IEC rules for diagrams, which eases documentation. I'll check whether standard symbols exist for these types. At least for TapChanger and PhaseShifter variants. |
OK. If there are standards, we should use them. You can also check what tools like Digsilent do. |
It may also exist some redundancy. |
I think this was a requirement from RTE. |
LoadImpedancePQ and LoadPQVoltageDependence inside Electrical.Loads share the same symbols, which is inconvenient.
I propose making a change so that they are different from each other. Maybe LoadImpedancePQ can have a "Z" in its symbol, while LoadPQVoltageDependence a greek alpha?
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