Solving 3 Phase 11kV Line w/ 4.1 MW & 2.6 MVAR Lag

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hi there.

can anybody advise with this one please?

a short 3 phase 11kv line delivers a load of 4.1 mw,2.6 mvar lag if the series impedance of the line is (7.2 +j12.1 ) calculate the sending end voltage and load angle.

the thing which is confusing me is the 2.6mvar lag bit,i know i need to get a power factor from this to work things out, how do i change this into a power factor value ie 0-1?

any pointers appreciated.

 

[rock.freak667]

You have P=4 MW and Q = 2.6MVAR, so you can get S using the power triangle and then you can easily get the power factor, cosθ = P/S.