Electrical and Instrumentation Engineering: Unit I: Transformer
Voltage Regulation of Transformer
The voltage regulation of a transformer is the arithmetic difference between the no load secondary voltage and voltage at load condition. Voltage in a transformer on load varies mainly due to its leakage reactance.
VOLTAGE REGULATION OF TRANSFORMER
The voltage
regulation of a transformer is the arithmetic difference between the no load
secondary voltage and voltage at load condition. Voltage in a transformer on
load varies mainly due to its leakage reactance.
In other words,
the change in the secondary terminal voltage from no-load to full-load
condition is termed as voltage regulation.
For Unity Power
Factor (or) Resistive Load
Take V2'
as reference. I1 is in phase with V2'
From vector
diagram 1.41
For Lagging
Power Factor or Inductive Load
From Figure
1.42.
i. Take V2'
as reference, I1 lags V2' by φ
ii. Draw I1
R01 parallel to I1
iii. Draw I1
X01 (BC) perpendicular to AB
iv. Connect C
and A, which is impedance drop I1 Z01
v. Join C and O.
This gives secondary voltage at no load condition
For Leading
Power Factor (or) Capacitive Load
From Figure 1.43
i. Take V2'
as reference, I1 leads V2' by φ
ii. Draw AB
parallel to I1
iii. Draw BC
perpendicular to AB
iv. Join AC
which is impedance drop I1 Z01
v. Join OC which
gives V1
Electrical and Instrumentation Engineering: Unit I: Transformer : Tag: : - Voltage Regulation of Transformer
Electrical and Instrumentation Engineering: Unit I: Transformer
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Electrical and Instrumentation Engineering
BE3254 - 2nd Semester - ECE Dept - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
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