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Combining a series of pi-sections of a transmission line model to a single pi-section

Combining a series of pi-sections of a transmission line model to a single pi-section

Combining a series of pi-sections of a transmission line model to a single pi-section

(OP)
Hi,

I'm actually trying to calculate overhead power line parameters which works quite fine so far. For some lines I calculate for example 2 sections because of varying heights above ground (quite short lines of less than 10 km length) and I'd like to combine my 2 pi-models to a single model. If I'd only use the elements R and X it would be no problem to get the total R and X per km. Using the capacitance I'm not sure how to summarize the elements correctly (the average weighed by length would not be completely correct). ponder

Maybe some of you are familiar with the problem or even know the solution. :)

Nice regards from Austria,
Tongo

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