[feature] Request to add four-winding transformer equipment

zhtee commented 2 months ago

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Feature Type

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Problem Description

Hello, in our practical work, four-winding transformers have been increasingly used. This type of transformer adds a filtering winding to achieve functions such as filtering third harmonics. Therefore, I would like to know if it is possible to add a four-winding transformer device?

Feature Description

Adding four-winding transformer equipment eliminates the need for users to perform equivalent calculations themselves.

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vogt31337 commented 5 days ago

@zhtee So far I have not heard of such transformer, could you provide literature explaining the details? Implementation of 3 winding transformers was quite complicated and is based on a reduction to three 2w transfomer. Something similar will be needed. And pandapower does not compute harmonics, so what would the benefit be?

zhtee commented 23 hours ago

@vogt31337 Thank you for your reply. 4 winding transformers is a new type of power equipment, and here are some reference I have found. https://www.researchgate.net/publication/300005026_Four-Winding_Transformer_and_Autotransformer_Modeling_For_Load-Flow_and_Short-Circuit_Analysis_Part_I_Theory https://www.pscad.com/webhelp/Master_Library_Models/Transformers/Classical/3p_4w_tx.htm In fact, some substations have already used 4 winding transformers, and I need to use them for power flow and short-circuit calculations in my research. So, I would like to ask if it is possible to add such equipment to pandapower in the future?

vogt31337 commented 20 hours ago

@zhtee seems to be quite complicated to implement, sadly I do not need it right now. You are welcomed to create a Pull Request.

zhtee commented 20 hours ago

@vogt31337 I fully understand and hope to contribute to PandaPower in the future. Thank you again for your reply!

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