Question
Download Solution PDFPer unit value for any quantity =
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 4):(Actual value ÷ Base value )
Concept:
Per unit (p.u.) quantity:
The per-unit value of any quantity is defined as the ratio of the actual value in any unit to the base or reference value in the same unit.
The per-unit value is dimensionless.
Per unit impedance (Zpu):
Zpu is defined as the ratio of actual value to base impedance.
It is also defined as The ratio of full-load volt-amperes to short-circuit volt-amperes
Za = Actual impedance
ZB = Base impedance
(kVA)B = Base kVA
(kV)B = Base voltage in kV
Per unit voltage (Vpu) =
Short circuit current in pu =
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