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

✖A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.ⓘ A Phase EMF [E_a]			+10% -10%
✖Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Impedance [Z₂]			+10% -10%
✖Positive Sequence Impedance consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Impedance [Z₁]			+10% -10%

✖Negative Sequence Voltage consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF) [V₂]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Fault Formula PDF PDF Image

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

STEP 0: Pre-Calculation Summary

Formula Used

Negative Sequence Voltage = (A Phase EMF*Negative Sequence Impedance)/(Positive Sequence Impedance+Negative Sequence Impedance)
V₂ = (E_a*Z₂)/(Z₁+Z₂)
This formula uses 4 Variables

Variables Used

Negative Sequence Voltage - (Measured in Volt) - Negative Sequence Voltage consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
A Phase EMF - (Measured in Volt) - A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault.
Negative Sequence Impedance - (Measured in Ohm) - Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
Positive Sequence Impedance - (Measured in Ohm) - Positive Sequence Impedance 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

A Phase EMF: 29.38 Volt --> 29.38 Volt No Conversion Required
Negative Sequence Impedance: -44.6 Ohm --> -44.6 Ohm No Conversion Required
Positive Sequence Impedance: 7.94 Ohm --> 7.94 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

V₂ = (E_a*Z₂)/(Z₁+Z₂) --> (29.38*(-44.6))/(7.94+(-44.6))

Evaluating ... ...

V₂ = 35.7432624113475

STEP 3: Convert Result to Output's Unit

35.7432624113475 Volt --> No Conversion Required

FINAL ANSWER

35.7432624113475 ≈ 35.74326 Volt <-- Negative Sequence Voltage

(Calculation completed in 00.022 seconds)

You are here -

Home » Engineering » Electrical » Power System » Fault » Shunt Faults » Unsymmetrical Faults » L L Fault » Voltage and EMF » Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF)

Credits

Created by Nisarg

Indian Institute of Technology,Roorlee (IITR), Roorkee

Nisarg has created this Calculator and 100+ more calculators!

Verified by Parminder Singh

Chandigarh University (CU), Punjab

Parminder Singh has verified this Calculator and 500+ more calculators!

< Voltage and EMF Calculators

C-Phase Voltage using C-Phase Current (LLF)

LaTeX Go C Phase Voltage = B Phase Voltage+(Fault Impedance*C Phase Current)

B-Phase Voltage using C-Phase Current (LLF)

LaTeX Go B Phase Voltage = C Phase Voltage-(Fault Impedance*C Phase Current)

B-Phase Voltage (LLF)

LaTeX Go B Phase Voltage = (Fault Impedance*B Phase Current)+C Phase Voltage

C-Phase Voltage (LLF)

LaTeX Go C Phase Voltage = B Phase Voltage-(Fault Impedance*B Phase Current)

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

LaTeX Go

Negative Sequence Voltage = (A Phase EMF*Negative Sequence Impedance)/(Positive Sequence Impedance+Negative Sequence Impedance)
V₂ = (E_a*Z₂)/(Z₁+Z₂)

What is a line to line fault?

A line-to-line fault, also known as a three-phase fault, is a type of electrical fault that occurs in a three-phase power system. This type of fault occurs when a failure occurs between two phases of the power system, causing a current to flow from one phase to the other.

How to Calculate Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF)?

Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF) calculator uses Negative Sequence Voltage = (A Phase EMF*Negative Sequence Impedance)/(Positive Sequence Impedance+Negative Sequence Impedance) to calculate the Negative Sequence Voltage, The Negative Sequence Voltage using A-phase EMF and Sequence Impedances(LLF) formula is defined as the voltage that is present in one phase of a three-phase electrical power system with respect to the negative sequence components of the system. Negative Sequence Voltage is denoted by V₂ symbol.

How to calculate Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF) using this online calculator? To use this online calculator for Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF), enter A Phase EMF (E_a), Negative Sequence Impedance (Z₂) & Positive Sequence Impedance (Z₁) and hit the calculate button. Here is how the Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF) calculation can be explained with given input values -> 24.94001 = (29.38*(-44.6))/(7.94+(-44.6)).

FAQ

What is Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF)?

The Negative Sequence Voltage using A-phase EMF and Sequence Impedances(LLF) formula is defined as the voltage that is present in one phase of a three-phase electrical power system with respect to the negative sequence components of the system and is represented as V₂ = (E_a*Z₂)/(Z₁+Z₂) or Negative Sequence Voltage = (A Phase EMF*Negative Sequence Impedance)/(Positive Sequence Impedance+Negative Sequence Impedance). A phase EMF is defined as the electromagnetic force of the a-phase in open conductor fault, Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation & Positive Sequence Impedance consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.

How to calculate Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF)?

The Negative Sequence Voltage using A-phase EMF and Sequence Impedances(LLF) formula is defined as the voltage that is present in one phase of a three-phase electrical power system with respect to the negative sequence components of the system is calculated using Negative Sequence Voltage = (A Phase EMF*Negative Sequence Impedance)/(Positive Sequence Impedance+Negative Sequence Impedance). To calculate Negative Sequence Voltage using A-Phase EMF and Sequence Impedances(LLF), you need A Phase EMF (E_a), Negative Sequence Impedance (Z₂) & Positive Sequence Impedance (Z₁). With our tool, you need to enter the respective value for A Phase EMF, Negative Sequence Impedance & Positive Sequence Impedance 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 Negative Sequence Voltage?

In this formula, Negative Sequence Voltage uses A Phase EMF, Negative Sequence Impedance & Positive Sequence Impedance. We can use 1 other way(s) to calculate the same, which is/are as follows -

Negative Sequence Voltage = Positive Sequence Voltage-(Fault Impedance*Positive Sequence Current)

Home

FREE PDFs

🔍 Search