Negative Sequence Impedance(LLGF) Calculator

✖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 [V₂]			+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 [I₂]			+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(LLGF) [Z₂]

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Negative Sequence Impedance(LLGF) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current
Z₂ = -V₂/I₂
This formula uses 3 Variables

Variables Used

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.
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.
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.

STEP 1: Convert Input(s) to Base Unit

Negative Sequence Voltage: 16.056 Volt --> 16.056 Volt No Conversion Required
Negative Sequence Current: -0.36 Ampere --> -0.36 Ampere No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Z₂ = -V₂/I₂ --> -16.056/(-0.36)

Evaluating ... ...

Z₂ = 44.6

STEP 3: Convert Result to Output's Unit

44.6 Ohm --> No Conversion Required

FINAL ANSWER

44.6 Ohm <-- Negative Sequence Impedance

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electrical » Power System » Fault » Shunt Faults » Unsymmetrical Faults » L L G Fault » Impedance » Negative Sequence Impedance(LLGF)

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Indian Institute of Technology,Roorlee (IITR), Roorkee

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< Impedance Calculators

Positive Sequence Impedance using A-Phase EMF(LLGF)

LaTeX Go Positive Sequence Impedance = (A Phase EMF-Positive Sequence Voltage)/Positive Sequence Current

Fault Impedance using Sequence Voltages and Zero Sequence Current(LLGF)

LaTeX Go Fault Impedance = (Zero Sequence Voltage-Positive Sequence Voltage)/(3*Zero Sequence Current)

Negative Sequence Impedance(LLGF)

LaTeX Go Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current

Zero Sequence Impedance(LLGF)

LaTeX Go Zero Sequence Impedance = -Zero Sequence Voltage/Zero Sequence Current

Negative Sequence Impedance(LLGF) Formula

LaTeX Go

Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current
Z₂ = -V₂/I₂

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 Impedance(LLGF)?

Negative Sequence Impedance(LLGF) calculator uses Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current to calculate the Negative Sequence Impedance, The Negative Sequence Impedance(LLGF) formula is defined as a measure of the impedance of a three-phase electrical power system with respect to the negative sequence components of the system. Negative Sequence Impedance is denoted by Z₂ symbol.

How to calculate Negative Sequence Impedance(LLGF) using this online calculator? To use this online calculator for Negative Sequence Impedance(LLGF), enter Negative Sequence Voltage (V₂) & Negative Sequence Current (I₂) and hit the calculate button. Here is how the Negative Sequence Impedance(LLGF) calculation can be explained with given input values -> 44.6 = -16.056/(-0.36).

FAQ

What is Negative Sequence Impedance(LLGF)?

The Negative Sequence Impedance(LLGF) formula is defined as a measure of the impedance of a three-phase electrical power system with respect to the negative sequence components of the system and is represented as Z₂ = -V₂/I₂ or Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current. 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 Current consists of balanced three-phase current phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.

How to calculate Negative Sequence Impedance(LLGF)?

The Negative Sequence Impedance(LLGF) formula is defined as a measure of the impedance of a three-phase electrical power system with respect to the negative sequence components of the system is calculated using Negative Sequence Impedance = -Negative Sequence Voltage/Negative Sequence Current. To calculate Negative Sequence Impedance(LLGF), you need Negative Sequence Voltage (V₂) & Negative Sequence Current (I₂). With our tool, you need to enter the respective value for Negative Sequence Voltage & Negative Sequence Current and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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