A-Phase EMF using Positive Sequence Voltage (LGF) Solution

STEP 0: Pre-Calculation Summary
Formula Used
A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG)
Ea(lg) = V1(lg)+(Z1(lg)*I1(lg))
This formula uses 4 Variables
Variables Used
A Phase EMF LG - (Measured in Volt) - A phase EMF LG is defined as the electromagnetic force of the a-phase in open conductor fault.
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.
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
Positive Sequence Voltage LG: 17.5 Volt --> 17.5 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
Ea(lg) = V1(lg)+(Z1(lg)*I1(lg)) --> 17.5+(7.94*2.001)
Evaluating ... ...
Ea(lg) = 33.38794
STEP 3: Convert Result to Output's Unit
33.38794 Volt --> No Conversion Required
FINAL ANSWER
33.38794 Volt <-- A Phase EMF LG
(Calculation completed in 00.004 seconds)

Credits

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Vishwakarma Government Engineering College (VGEC), Ahmedabad
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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

A-Phase EMF using Positive Sequence Voltage (LGF) Formula

A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG)
Ea(lg) = V1(lg)+(Z1(lg)*I1(lg))

What are the positive and negative 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.

How to Calculate A-Phase EMF using Positive Sequence Voltage (LGF)?

A-Phase EMF using Positive Sequence Voltage (LGF) calculator uses A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG) to calculate the A Phase EMF LG, The A-phase EMF using Positive Sequence Voltage (LGF) formula is defined as the electromotive force of the A-phase current flowing line. A Phase EMF LG is denoted by Ea(lg) symbol.

How to calculate A-Phase EMF using Positive Sequence Voltage (LGF) using this online calculator? To use this online calculator for A-Phase EMF using Positive Sequence Voltage (LGF), enter Positive Sequence Voltage LG (V1(lg)), Positive Sequence Impedance LG (Z1(lg)) & Positive Sequence Current LG (I1(lg)) and hit the calculate button. Here is how the A-Phase EMF using Positive Sequence Voltage (LGF) calculation can be explained with given input values -> 33.38794 = 17.5+(7.94*2.001).

FAQ

What is A-Phase EMF using Positive Sequence Voltage (LGF)?
The A-phase EMF using Positive Sequence Voltage (LGF) formula is defined as the electromotive force of the A-phase current flowing line and is represented as Ea(lg) = V1(lg)+(Z1(lg)*I1(lg)) or A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG). 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 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 A-Phase EMF using Positive Sequence Voltage (LGF)?
The A-phase EMF using Positive Sequence Voltage (LGF) formula is defined as the electromotive force of the A-phase current flowing line is calculated using A Phase EMF LG = Positive Sequence Voltage LG+(Positive Sequence Impedance LG*Positive Sequence Current LG). To calculate A-Phase EMF using Positive Sequence Voltage (LGF), you need Positive Sequence Voltage LG (V1(lg)), Positive Sequence Impedance LG (Z1(lg)) & Positive Sequence Current LG (I1(lg)). With our tool, you need to enter the respective value for Positive Sequence Voltage 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 A Phase EMF LG?
In this formula, A Phase EMF LG uses Positive Sequence Voltage LG, Positive Sequence Impedance LG & Positive Sequence Current LG. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • A Phase EMF LG = Zero Sequence Current LG*((3*Fault Impedance LG)+Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)
  • 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 LG = Negative Sequence Current LG*((3*Fault Impedance LG)+Zero Sequence Impedance LG+Positive Sequence Impedance LG+Negative Sequence Impedance LG)
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