power systeme analysis( fault analysis)
exercice:
A symmétrical 3 phase schort circuit occur's on the 11.8kv bus bar of the circuit.
G1 : 20MVA ; XG1=0.07 p.u
G2 : 60MVA ; XG2=0.1 p.u
G3 : 20MVA ; XG3=0.08 p.u
the voltage at the new bus bar drops to 5kv compared to the nominal voltage.
Qst:
1- find and calculate the expression of fault current and the fault apparent power.
2- calculate the quantity of Var to be injected at the level of the busbar, to restore the original value of the voltage.
Sbase=60MVA ; Ubase=11.8kv
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power systeme analysis( fault analysis)
exercice:A symmétrical 3 phase schort circuit occur's on the 11.8kv bus bar of the circuit.G1 : 20MVA ; XG1=0.07 p.uG2 : 20MVA ; XG2=0.1 p.uG3 : 20MVA ; XG3=0.08 p.uthe voltage at the new bus bar drops to 5kv compared to the nominal voltage.Qst:1- find and calculate the expression of fault current and the fault apparent power.2- calculate the quantity of Var to be injected at the level of the busbar, to restore the original value of the voltage.Sbase=60MVA ; Ubase=11.8kv
power systeme analysis( fault analysis)
exercice:A symmétrical 3 phase schort circuit occur's on the 11.8kv bus bar of the circuit.G1 : 20MVA ; XG1=0.07 p.uG2 : 20MVA ; XG2=0.1 p.uG3 : 20MVA ; XG3=0.08 p.uthe voltage at the new bus bar drops to 5kv compared to the nominal voltage.Qst:1- find and calculate the expression of fault current and the fault apparent power.2- calculate the quantity of Var to be injected at the level of the busbar, to restore the original value of the voltage.
power Systeme
exercice:A symmétrical 3 phase schort circuit occur's on the 11.8kv bus bar of the circuit.G1 : 20MVA ; XG1=0.07 p.uG2 : 60MVA ; XG2=0.1 p.uG3 : 20MVA ; XG3=0.08 p.uthe voltage at the new bus bar drops to 5kv compared to the nominal voltage.Qst:1- find and calculate the expression of fault current and the fault apparent power.2- calculate the quantity of Var to be injected at the level of the busbar, to restore the original value of the voltage.Sbase=60MVA ; Ubase=11.8kvplease give me the answer
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