Short Transmission Line Efficiency & Regulation Calculator

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For a short transmission line, the receiving-end voltage is approximated by:
$V_{R} = V_{S} - \frac{I (R \cos ϕ + X \sin ϕ)}{1000}$ where $ϕ = \arccos (P F)$ . Then, the efficiency is $η = \frac{V_{R}}{V_{S}} \times 100 %$ and the voltage regulation is $Regulation = \frac{V_{S} - V_{R}}{V_{R}} \times 100 % .$

* Enter sending voltage (kV), line current (A), power factor, and line impedance values (R and X in ohms).

Step 1: Enter Transmission Line Parameters

Sending-End Voltage,

V_{S}

(kV):

Example: 220 kV

Line Current,

I

(A):

Example: 500 A

Power Factor,

P F

Example: 0.95

Line Resistance,

R

(Ω):

Example: 0.2 Ω

Line Reactance,

X

(Ω):

Example: 0.3 Ω

Short Transmission Line Efficiency & Regulation Calculator

free online calculators > calculators > Short Transmission Line Efficiency & Regulation Calculator

Step 1: Enter Transmission Line Parameters

Calculated Results

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