Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) Calculator

✖A phase EMF in OCO is defined as the electromagnetic force of the a-phase in open conductor fault.ⓘ A Phase EMF in OCO [E_a(oco)]			+10% -10%
✖Positive Sequence Impedance in OCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Impedance in OCO [Z_1(oco)]			+10% -10%
✖Zero Sequence Impedance in OCO is 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 in OCO [Z_0(oco)]			+10% -10%
✖Negative Sequence Impedance in OCO is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.ⓘ Negative Sequence Impedance in OCO [Z_2(oco)]			+10% -10%

✖Positive Sequence Current in OCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.ⓘ Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) [I_1(oco)]

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Formula

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Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)

Formula

`"I"_{"1(oco)"} = "E"_{"a(oco)"}/("Z"_{"1(oco)"}+(("Z"_{"0(oco)"}*"Z"_{"2(oco)"})/("Z"_{"0(oco)"}+"Z"_{"2(oco)"})))`

Example

`"1.995481A"="29.38V"/("7.94Ω"+(("8Ω"*"44.6Ω")/("8Ω"+"44.6Ω")))`

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Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) Solution

STEP 0: Pre-Calculation Summary

Formula Used

Positive Sequence Current in OCO = A Phase EMF in OCO/(Positive Sequence Impedance in OCO+((Zero Sequence Impedance in OCO*Negative Sequence Impedance in OCO)/(Zero Sequence Impedance in OCO+Negative Sequence Impedance in OCO)))
I_1(oco) = E_a(oco)/(Z_1(oco)+((Z_0(oco)*Z_2(oco))/(Z_0(oco)+Z_2(oco))))
This formula uses 5 Variables

Variables Used

Positive Sequence Current in OCO - (Measured in Ampere) - Positive Sequence Current in OCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
A Phase EMF in OCO - (Measured in Volt) - A phase EMF in OCO is defined as the electromagnetic force of the a-phase in open conductor fault.
Positive Sequence Impedance in OCO - (Measured in Ohm) - Positive Sequence Impedance in OCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation.
Zero Sequence Impedance in OCO - (Measured in Ohm) - Zero Sequence Impedance in OCO is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together.
Negative Sequence Impedance in OCO - (Measured in Ohm) - Negative Sequence Impedance in OCO is 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

A Phase EMF in OCO: 29.38 Volt --> 29.38 Volt No Conversion Required
Positive Sequence Impedance in OCO: 7.94 Ohm --> 7.94 Ohm No Conversion Required
Zero Sequence Impedance in OCO: 8 Ohm --> 8 Ohm No Conversion Required
Negative Sequence Impedance in OCO: 44.6 Ohm --> 44.6 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_1(oco) = E_a(oco)/(Z_1(oco)+((Z_0(oco)*Z_2(oco))/(Z_0(oco)+Z_2(oco)))) --> 29.38/(7.94+((8*44.6)/(8+44.6)))

Evaluating ... ...

I_1(oco) = 1.99548062868329

STEP 3: Convert Result to Output's Unit

1.99548062868329 Ampere --> No Conversion Required

FINAL ANSWER

1.99548062868329 ≈ 1.995481 Ampere <-- Positive Sequence Current in OCO

(Calculation completed in 00.020 seconds)

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Home » Engineering » Electrical » Power System » Fault » Open Conductor Fault » One Conductor Open » Positive Sequence » Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)

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< 5 Positive Sequence Calculators

Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)

Go Positive Sequence Current in OCO = A Phase EMF in OCO/(Positive Sequence Impedance in OCO+((Zero Sequence Impedance in OCO*Negative Sequence Impedance in OCO)/(Zero Sequence Impedance in OCO+Negative Sequence Impedance in OCO)))

Positive Sequence Impedance using Positive Sequence Voltage (One Conductor Open)

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

Positive Sequence Current using Positive Sequence Voltage (One Conductor Open)

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

Positive Sequence Voltage using Positive Sequence Impedance (One Conductor Open)

Go Positive Sequence Voltage in OCO = A Phase EMF in OCO-Positive Sequence Current in OCO*Positive Sequence Impedance in OCO

Positive Sequence Potential Difference using A-Phase Potential Difference (One Conductor Open)

Go Positive Sequence Potential Difference in OCO = Potential Difference Between A Phase in OCO/3

Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) Formula

What are open conductor faults?

Open conductor faults are series faults that involve a break in one or two of the three conductors of a three-phase power system. The phenomenon is treated analytically through calculations and then the calculated results are confirmed through computer simulations using SIMPOW, a power system simulation software.

How to Calculate Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)?

Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) calculator uses Positive Sequence Current in OCO = A Phase EMF in OCO/(Positive Sequence Impedance in OCO+((Zero Sequence Impedance in OCO*Negative Sequence Impedance in OCO)/(Zero Sequence Impedance in OCO+Negative Sequence Impedance in OCO))) to calculate the Positive Sequence Current in OCO, The Positive Sequence Current using Zero Sequence Impedance (One conductor open) formula is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together. Positive Sequence Current in OCO is denoted by I_1(oco) symbol.

How to calculate Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) using this online calculator? To use this online calculator for Positive Sequence Current using Zero Sequence Impedance (One Conductor Open), enter A Phase EMF in OCO (E_a(oco)), Positive Sequence Impedance in OCO (Z_1(oco)), Zero Sequence Impedance in OCO (Z_0(oco)) & Negative Sequence Impedance in OCO (Z_2(oco)) and hit the calculate button. Here is how the Positive Sequence Current using Zero Sequence Impedance (One Conductor Open) calculation can be explained with given input values -> 2.002334 = 29.38/(7.94+((8*44.6)/(8+44.6))).

FAQ

What is Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)?

The Positive Sequence Current using Zero Sequence Impedance (One conductor open) formula is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together and is represented as I_1(oco) = E_a(oco)/(Z_1(oco)+((Z_0(oco)*Z_2(oco))/(Z_0(oco)+Z_2(oco)))) or Positive Sequence Current in OCO = A Phase EMF in OCO/(Positive Sequence Impedance in OCO+((Zero Sequence Impedance in OCO*Negative Sequence Impedance in OCO)/(Zero Sequence Impedance in OCO+Negative Sequence Impedance in OCO))). A phase EMF in OCO is defined as the electromagnetic force of the a-phase in open conductor fault, Positive Sequence Impedance in OCO is consists of balanced three-phase voltage and current phasors which are exactly at 120 degrees apart rotating counterclockwise in ABC rotation, Zero Sequence Impedance in OCO is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counter clockwise together & Negative Sequence Impedance in OCO is consists of balanced three-phase impedance phasors which are exactly at 120 degrees apart rotating counterclockwise in ACB rotation.

How to calculate Positive Sequence Current using Zero Sequence Impedance (One Conductor Open)?

The Positive Sequence Current using Zero Sequence Impedance (One conductor open) formula is consists of a balanced three-phase voltage and current, phasors of which all have the same phase angles and rotate counterclockwise together is calculated using Positive Sequence Current in OCO = A Phase EMF in OCO/(Positive Sequence Impedance in OCO+((Zero Sequence Impedance in OCO*Negative Sequence Impedance in OCO)/(Zero Sequence Impedance in OCO+Negative Sequence Impedance in OCO))). To calculate Positive Sequence Current using Zero Sequence Impedance (One Conductor Open), you need A Phase EMF in OCO (E_a(oco)), Positive Sequence Impedance in OCO (Z_1(oco)), Zero Sequence Impedance in OCO (Z_0(oco)) & Negative Sequence Impedance in OCO (Z_2(oco)). With our tool, you need to enter the respective value for A Phase EMF in OCO, Positive Sequence Impedance in OCO, Zero Sequence Impedance in OCO & Negative Sequence Impedance in OCO 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 Current in OCO?

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

Positive Sequence Current in OCO = (A Phase EMF in OCO-Positive Sequence Voltage in OCO)/Positive Sequence Impedance in OCO

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