Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) Calculator

✖Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Current [I₁]			+10% -10%
✖Zero Sequence Impedance consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.ⓘ Zero Sequence Impedance [Z₀]			+10% -10%
✖Fault Impedance is a measure of the resistance and reactance in an electrical circuit that is used to calculate the fault current that flows through the circuit in the event of a fault.ⓘ Fault Impedance [Z_f]			+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%

✖Negative Sequence Current consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) [I₂]

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Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Negative Sequence Current = -Positive Sequence Current*((Zero Sequence Impedance+3*Fault Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance))
I₂ = -I₁*((Z₀+3*Z_f)/(Z₀+Z₂+3*Z_f))
This formula uses 5 Variables

Variables Used

Negative Sequence Current - (Measured in Ampere) - Negative Sequence Current consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.
Positive Sequence Current - (Measured in Ampere) - Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Zero Sequence Impedance - (Measured in Ohm) - Zero Sequence Impedance consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.
Fault Impedance - (Measured in Ohm) - Fault Impedance is a measure of the resistance and reactance in an electrical circuit that is used to calculate the fault current that flows through the circuit in the event of a 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.

STEP 1: Convert Input(s) to Base Unit

Positive Sequence Current: 2.001 Ampere --> 2.001 Ampere No Conversion Required
Zero Sequence Impedance: 8 Ohm --> 8 Ohm No Conversion Required
Fault Impedance: 1.5 Ohm --> 1.5 Ohm No Conversion Required
Negative Sequence Impedance: -44.6 Ohm --> -44.6 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I₂ = -I₁*((Z₀+3*Z_f)/(Z₀+Z₂+3*Z_f)) --> -2.001*((8+3*1.5)/(8+(-44.6)+3*1.5))

Evaluating ... ...

I₂ = 0.779205607476635

STEP 3: Convert Result to Output's Unit

0.779205607476635 Ampere --> No Conversion Required

FINAL ANSWER

0.779205607476635 ≈ 0.779206 Ampere <-- Negative Sequence Current

(Calculation completed in 00.020 seconds)

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Fault Current using B-Phase Voltage (LLGF)

LaTeX Go Fault Current = B Phase Voltage/Fault Impedance

B-Phase Current (LLGF)

LaTeX Go B Phase Current = Fault Current-C Phase Current

C-Phase Current (LLGF)

LaTeX Go C Phase Current = Fault Current-B Phase Current

Fault Current (LLGF)

LaTeX Go Fault Current = B Phase Current+C Phase Current

Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) Formula

LaTeX Go

What is a double line to ground fault?

A double line to ground fault is a type of fault that can occur in an electrical power system. It is characterized by two of the three conductors in a three-phase power system coming into contact with the ground or earth.

How to Calculate Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)?

Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) calculator uses Negative Sequence Current = -Positive Sequence Current*((Zero Sequence Impedance+3*Fault Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance)) to calculate the Negative Sequence Current, The Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) formula is defined as a concept in electrical engineering that refers to the flow of electric current in a three-phase power system where all three phases have the same magnitude and are equally spaced in phase angle. Negative Sequence Current is denoted by I₂ symbol.

How to calculate Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) using this online calculator? To use this online calculator for Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF), enter Positive Sequence Current (I₁), Zero Sequence Impedance (Z₀), Fault Impedance (Z_f) & Negative Sequence Impedance (Z₂) and hit the calculate button. Here is how the Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) calculation can be explained with given input values -> -0.438047 = -2.001*((8+3*1.5)/(8+(-44.6)+3*1.5)).

FAQ

What is Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)?

The Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) formula is defined as a concept in electrical engineering that refers to the flow of electric current in a three-phase power system where all three phases have the same magnitude and are equally spaced in phase angle and is represented as I₂ = -I₁*((Z₀+3*Z_f)/(Z₀+Z₂+3*Z_f)) or Negative Sequence Current = -Positive Sequence Current*((Zero Sequence Impedance+3*Fault Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance)). Positive Sequence Current consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Zero Sequence Impedance consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together, Fault Impedance is a measure of the resistance and reactance in an electrical circuit that is used to calculate the fault current that flows through the circuit in the event of a fault & Negative Sequence Impedance consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.

How to calculate Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF)?

The Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF) formula is defined as a concept in electrical engineering that refers to the flow of electric current in a three-phase power system where all three phases have the same magnitude and are equally spaced in phase angle is calculated using Negative Sequence Current = -Positive Sequence Current*((Zero Sequence Impedance+3*Fault Impedance)/(Zero Sequence Impedance+Negative Sequence Impedance+3*Fault Impedance)). To calculate Negative Sequence Current using Positive Sequence Current and Sequence Impedances(LLGF), you need Positive Sequence Current (I₁), Zero Sequence Impedance (Z₀), Fault Impedance (Z_f) & Negative Sequence Impedance (Z₂). With our tool, you need to enter the respective value for Positive Sequence Current, Zero Sequence Impedance, Fault Impedance & Negative 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 Current?

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

Negative Sequence Current = (-1)*Negative Sequence Voltage/Negative Sequence Impedance

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