Short Circuit in XLS
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Transcript of Short Circuit in XLS
Simplicity of Short Circuit Calculation3 Different Transformer3 Different Generator3 Different MotorNo Conductor Resistance Calculation
Short Circuit Value is:
4.91 kA
Power SystemConstant c 1.1 c IEC
Short Circuit Power 5000 MVA IEC
Transformer A Transformer B Transformer CQuantity 1 Pcs Quantity 0 Pcs Quantity 0 Pcs
Primary Voltage 6.6 kV Primary Voltage 6.6 kV Primary Voltage 6.6 kV
Secondary Voltage 20 kV Secondary Voltage 20 kV Secondary Voltage 20 kV
Rated Apparent Power 16 MVA Rated Apparent Power 40 MVA Rated Apparent Power 40 MVA
Rated Short Circuit 10 % Rated Short Circuit 11 % Rated Short Circuit 11 %
4.91 kA 4.91 kA 0.00 0.00
Generator A Generator B Generator CQuantity 0 Pcs Quantity 0 Pcs Quantity 0 Pcs
Rated Voltage 0.4 kV Secondary Voltage 0.4 kV Secondary Voltage 0.4 kV
Rated Apparent Power 10 MVA Rated Apparent Power 10 MVA Rated Apparent Power 10 MVA
Subtransient Reactance 12 % Subtransient Reactance 12 % Subtransient Reactance 12 %
0.00 kA 0.00 kA 0.00 0.00
Motor A Motor B Motor CQuantity 0 Pcs Quantity 0 Pcs Quantity 0 PcsRated Voltage 12 kV Rated Voltage 12 kV Rated Voltage 12 kV
Active Power 8 MW Active Power 8 MW Active Power 8 MW
0.85 0.85 0.85
Rotor Locked current 5 Ir Rotor Locked current 5 Ir Rotor Locked current 5 Ir
0.00 kA 0.00 kA 0.00 kA 0.00 kA30/12/2005 TN
IkT + IkG + IkM =
S"kq
VP VP VP
VS VS VS
Sr Sr Sr
ukr ukr ukr
Total IkT Transformer IkT Transformer A IkT Transformer B IkT Transformer C
Ur VS VS
Sr Sr Sr
X"d X"d X"d
Total IkG Generator IkG Generator A IkG Generator B IkG Generator C
Pr Pr Pr
Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr Phase angle Ir and Ur Cos jr
Total IkM Motor IkM Motor A IkM Motor B IkM Motor C
I kT} } = { { size 8{c cdot S rSub { size 6{rT } } } } over { sqrt {3} cdot U rSub { size 6{rT } } cdot left ( { { size 6{u rSub {kr } } } over { size 6{100 %} } } +c cdot { { size 6{S rSub {rT } } } over { size 6{S rSub {kQ } rSup {¿¿¿¿¿ ¿ ¿¿
I kM} } = { { size 8{c cdot { { size 6{I rSub {LR} } } over { size 6{I rSub {r} } } } cdot P rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot cos ϕ rSub { size 6{r} } } } } {¿ ¿¿
I kG} } = { { size 8{c cdot S rSub { size 6{r} } } } over { sqrt {3} cdot U rSub { size 6{r} } cdot { { size 6{x rSub {d} rSup {
100% ¿¿¿¿