Positive Sequence Voltage for L-G-F Calculator

✖EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil.ⓘ EMF Induced in Primary Winding LG [E_1(lg)]			+10% -10%
✖Positive Sequence Impedance LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Impedance LG [Z_1(lg)]			+10% -10%
✖Positive Sequence Current LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Current LG [I_1(lg)]			+10% -10%

✖Positive Sequence Voltage LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Voltage for L-G-F [V_1(lg)]

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Formula

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Positive Sequence Voltage for L-G-F

Formula

`"V"_{"1(lg)"} = "E"_{"1(lg)"}-("Z"_{"1(lg)"}*"I"_{"1(lg)"})`

Example

`"4.61206V"="20.5V"-("7.94Ω"*"2.001A")`

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Positive Sequence Voltage for L-G-F Solution

STEP 0: Pre-Calculation Summary

Formula Used

Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG)
V_1(lg) = E_1(lg)-(Z_1(lg)*I_1(lg))
This formula uses 4 Variables

Variables Used

Positive Sequence Voltage LG - (Measured in Volt) - Positive Sequence Voltage LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
EMF Induced in Primary Winding LG - (Measured in Volt) - EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil.
Positive Sequence Impedance LG - (Measured in Ohm) - Positive Sequence Impedance LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Positive Sequence Current LG - (Measured in Ampere) - Positive Sequence Current LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

STEP 1: Convert Input(s) to Base Unit

EMF Induced in Primary Winding LG: 20.5 Volt --> 20.5 Volt No Conversion Required
Positive Sequence Impedance LG: 7.94 Ohm --> 7.94 Ohm No Conversion Required
Positive Sequence Current LG: 2.001 Ampere --> 2.001 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V_1(lg) = E_1(lg)-(Z_1(lg)*I_1(lg)) --> 20.5-(7.94*2.001)

Evaluating ... ...

V_1(lg) = 4.61206

STEP 3: Convert Result to Output's Unit

4.61206 Volt --> No Conversion Required

FINAL ANSWER

4.61206 Volt <-- Positive Sequence Voltage LG

(Calculation completed in 00.012 seconds)

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Home » Engineering » Electrical » Power System » Fault » Shunt Faults » Unsymmetrical Faults » L-G Fault » Voltage & EMF » Positive Sequence Voltage for L-G-F

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< 16 Voltage & EMF Calculators

Positive Sequence Voltage using A-Phase EMF and Sequence Impedances(LGF)

Go Positive Sequence Voltage LG = (A Phase EMF LG*(Zero Sequence Impedance LG+Negative Sequence Impedance LG))/(Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)

Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LGF)

Go Negative Sequence Voltage LG = (-A Phase EMF LG*Negative Sequence Impedance LG)/(Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)

A-Phase EMF using Negative Sequence Current (LGF)

Go A Phase EMF LG = Negative Sequence Current LG*((3*Fault Impedance LG)+Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)

A-Phase EMF using Positive Sequence Current(LGF)

Go A Phase EMF LG = Positive Sequence Current LG*((3*Fault Impedance LG)+Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)

A-Phase EMF using Zero Sequence Current (LGF)

Go A Phase EMF LG = Zero Sequence Current LG*((3*Fault Impedance LG)+Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)

Zero Sequence Voltage using Positive Sequence Current

Go Zero Sequence Voltage LG = (3*Fault Impedance LG*Positive Sequence Current LG)-Negative Sequence Voltage LG-Positive Sequence Voltage LG

Zero Sequence Voltage using A-Phase Current (LGF)

Go Zero Sequence Voltage LG = (Fault Impedance LG*A-Phase Current LG)-(Negative Sequence Voltage LG)-(Positive Sequence Voltage LG)

Negative Sequence Voltage using A-Phase Current (LGF)

Go Negative Sequence Voltage LG = (Fault Impedance LG*A-Phase Current LG)-Positive Sequence Voltage LG-Zero Sequence Voltage LG

Zero Sequence Voltage using Phase Voltages(LGF)

Go Zero Sequence Voltage LG = 1/3*(Fault Impedance LG*A-Phase Current LG+B Phase Voltage LG+C Phase Voltage LG)

Positive Sequence Voltage for L-G-F

Go Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG)

A-Phase EMF using Positive Sequence Voltage (LGF)

Go A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG)

A-Phase Voltage using Sequence Voltages(LGF)

Go A Phase Voltage LG = Zero Sequence Voltage LG+Positive Sequence Voltage LG+Negative Sequence Voltage LG

Negative Sequence Voltage for LGF

Go Negative Sequence Voltage LG = -Negative Sequence Impedance LG*Negative Sequence Current LG

Positive Sequence Voltage using Positive Sequence Current

Go Positive Sequence Voltage LG = 3*Fault Impedance LG*Positive Sequence Current LG

Zero Sequence Voltage for LGF

Go Zero Sequence Voltage LG = -Zero Sequence Impedance LG*Zero Sequence Current LG

A-Phase Voltage(LGF)

Go A Phase Voltage LG = Fault Impedance LG*A-Phase Current LG

Positive Sequence Voltage for L-G-F Formula

Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG)
V_1(lg) = E_1(lg)-(Z_1(lg)*I_1(lg))

What are the Sequence Components?

The positive sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. The negative sequence consists of balanced three-phase voltage and current phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ACB rotation. Zero sequence consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together.

How to Calculate Positive Sequence Voltage for L-G-F?

Positive Sequence Voltage for L-G-F calculator uses Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG) to calculate the Positive Sequence Voltage LG, The Positive Sequence Voltage for L-G-F formula consists of balanced three-phase voltage phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation. Positive Sequence Voltage LG is denoted by V_1(lg) symbol.

How to calculate Positive Sequence Voltage for L-G-F using this online calculator? To use this online calculator for Positive Sequence Voltage for L-G-F, enter EMF Induced in Primary Winding LG (E_1(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Positive Sequence Current LG (I_1(lg)) and hit the calculate button. Here is how the Positive Sequence Voltage for L-G-F calculation can be explained with given input values -> 4.61206 = 20.5-(7.94*2.001).

FAQ

What is Positive Sequence Voltage for L-G-F?

The Positive Sequence Voltage for L-G-F formula consists of balanced three-phase voltage phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation and is represented as V_1(lg) = E_1(lg)-(Z_1(lg)*I_1(lg)) or Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG). EMF Induced in Primary Winding LG is the production of voltage in a coil because of the change in magnetic flux through a coil, Positive Sequence Impedance LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation & Positive Sequence Current LG consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

How to calculate Positive Sequence Voltage for L-G-F?

The Positive Sequence Voltage for L-G-F formula consists of balanced three-phase voltage phasors which are exactly at ₁₂₀ degrees apart rotating counterclockwise in ABC rotation is calculated using Positive Sequence Voltage LG = EMF Induced in Primary Winding LG-(Positive Sequence Impedance LG*Positive Sequence Current LG). To calculate Positive Sequence Voltage for L-G-F, you need EMF Induced in Primary Winding LG (E_1(lg)), Positive Sequence Impedance LG (Z_1(lg)) & Positive Sequence Current LG (I_1(lg)). With our tool, you need to enter the respective value for EMF Induced in Primary Winding LG, Positive Sequence Impedance LG & Positive Sequence Current LG and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Positive Sequence Voltage LG?

In this formula, Positive Sequence Voltage LG uses EMF Induced in Primary Winding LG, Positive Sequence Impedance LG & Positive Sequence Current LG. We can use 2 other way(s) to calculate the same, which is/are as follows -

Positive Sequence Voltage LG = (A Phase EMF LG*(Zero Sequence Impedance LG+Negative Sequence Impedance LG))/(Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)
Positive Sequence Voltage LG = 3*Fault Impedance LG*Positive Sequence Current LG

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