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murali krishna Grade: Upto college level

derive power angle equation


8 years ago

Answers : (1)

879 Points

Dear student,

 the sending end apparent power is VS IS* , we can write





Similarly the receiving end apparent power is given by





Hence the real power transmitted over the line is given by




The power-angle characteristics of a series compensated power system are given in Fig. 10.12. In this figure the base power is chosen as V2 / X . Three curves are shown, of which the curve P0 is the power-angle curve when the line is not compensated. Curves which have maximum powers greater than the base power pertain to capacitive mode of operation. On the other hand, all curves the inductive mode of operation will have maximum values less than 1. For example, in Fig. 10.12, the curve P1 is for capacitive mode and the curve P2 is for inductive mode of operation.


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Sagar Singh

B.Tech, IIT Delhi

7 years ago
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