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Tangent vs Cosine for Supplier Settlements: Power Triangle, Q/P, P/S Differences Explained

Przemaldo 17160 6
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  • #1 17072205
    Przemaldo
    Level 10  
    Why do we use tangent rather than cosine for settlements with the supplier.

    I understand that with a power triangle, tangent equals Q / P and cosine P / S, but basically it's the same.

    Can anyone tell me why we use tangent?
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  • #2 17072979
    Strumien swiadomosci swia
    Level 43  
    Przemaldo wrote:
    Why we use tangent for settlements with the supplier

    Because it defines the ratio of active and reactive power consumed and not only the reactive power consumed.

    Note how fast the tg function is compared to something.
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  • #3 17073760
    W.P.
    Computer PSUs specialist  
    I think the author is writing " same "meant the phase shift angle.
    Whether we give something or tg? it always means that we want to express the existence of reactive power. If you convert something to tg then the number looks more impressive :)
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  • #4 17073769
    Strumien swiadomosci swia
    Level 43  
    W.P. wrote:
    If you convert something to tg then the number looks more impressive


    tg is more accurate because more or less tg 0-0.5 corresponds to something 0.93 0.99.
    It is simply a faster function, it can be seen in the graph under boundary conditions, because it is so in nature, but who would try to analyze the marginal function of tg.
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  • #5 17074046
    Anonymous
    Anonymous  
  • #6 17084659
    Przemaldo
    Level 10  
    I understand that tangent is more accurate than cosine and that would make sense.
    Thanks for the reply :)
  • #7 17084690
    Strumien swiadomosci swia
    Level 43  
    Cos fi determines how large the receiver consumes active and reactive current, and tg determines the ratio of active and reactive power.
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Topic summary

The discussion centers on the preference for using the tangent function (tg) over the cosine function (cos) in supplier settlements related to power calculations. Participants explain that tangent provides a more accurate representation of the ratio of active (P) and reactive power (Q), particularly in non-sinusoidal conditions. While cosine is applicable for sinusoidal waveforms, tangent is favored for its ability to express the existence of reactive power more effectively. The accuracy of tangent is highlighted, especially in boundary conditions, making it a preferred choice in power triangle analyses.
Summary generated by the language model.
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