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greg997

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Perhaps sb is able to point in the right direction. The task is to calculate the value of the receivig end volatge, for a load of 10 MW at 0.9 pf taken from 66 kV substation.

First I calculated the transmission line impedance

Zlinebase=(Vbase^2)/MVAbase

Zlinebase=132^2/100=174.24Ohm

Zlinepu= 150/174=j0.862

Sbase= 100 MVA

Load impedance = S=P+jQ

S=10+j4.84

Spu=0.1+j0.048 MVA

T1= j0.1 pu and T2= j0.12 pu

So the total impedace = T1+T2+Line+Load= j0.1+j0.2+j0.862+ 0.1+j0.048= 0.1+j1.21 ohm

Is that correct?

I know that the received volatge is Vr= Vs - Voltage drop. But how can I find the voltage drop? I need current for that, so how to find current?

Any help appreciated.According to matlab simulation the received voltage shoud be 57kV Line rms. Is that correct?

First I calculated the transmission line impedance

Zlinebase=(Vbase^2)/MVAbase

Zlinebase=132^2/100=174.24Ohm

Zlinepu= 150/174=j0.862

Sbase= 100 MVA

Load impedance = S=P+jQ

S=10+j4.84

Spu=0.1+j0.048 MVA

T1= j0.1 pu and T2= j0.12 pu

So the total impedace = T1+T2+Line+Load= j0.1+j0.2+j0.862+ 0.1+j0.048= 0.1+j1.21 ohm

Is that correct?

I know that the received volatge is Vr= Vs - Voltage drop. But how can I find the voltage drop? I need current for that, so how to find current?

Any help appreciated.According to matlab simulation the received voltage shoud be 57kV Line rms. Is that correct?

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