Question

The reactance (Xg) of a generator is given to be 0.25 p.u. based on the nameplate rating of 18 kV ( L to L) and 500MVA (3 phase). However, the base values used for Network calculations are 20kV (L to L) and 100MVA ( 3phase). Answer the following: a. Convert Xg into actual value b. Express Xg in p.u. using the network (new) base c. Verify the result using the equation for change of bases d. Calculate the inductance value (Lg) in p.u. on the network bases

Name: the reactance xg of a generator is given to be 025 pu based on the nameplate rating of 18 kv l to l and 500mva 3 phase however the base values used for network calculations are 20kv l to l and 100mva
Uploaded: 2020-02-21T21:00:57-08:00
Duration: 9 min 2 s
Channel: João Gabriel Alencar Caribé
Description: the reactance xg of a generator is given to be 025 pu based on the nameplate rating of 18 kv l to l and 500mva 3 phase however the base values used for network calculations are 20kv l to l and 100mva

          The reactance (Xg) of a generator is given to be 0.25 p.u. based on the
nameplate rating of 18 kV ( L to L) and 500MVA (3 phase).
However, the base values used for Network calculations are 20kV (L to
L) and 100MVA ( 3phase). Answer the following:
a. Convert Xg into actual value
b. Express Xg in p.u. using the network (new) base
c. Verify the result using the equation for change of bases
d. Calculate the inductance value (Lg) in p.u. on the network bases

Added by Sheila R.

Physics

James S. Walker 5th Edition

Chapter 24

Instant Answer

Solved by Expert João Gabriel Alencar Caribé

02/21/2020

Step 1

Convert Xg into actual value The actual value of Xg can be calculated using the formula Xg = Zbase * Xg(p.u.), where Zbase is the base impedance. The base impedance (Zbase) can be calculated using the formula Zbase = Vbase^2 / Sbase, where Vbase is the base Show more…

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The reactance (Xg) of a generator is given to be 0.25 p.u. based on the nameplate rating of 18 kV ( L to L) and 500MVA (3 phase). However, the base values used for Network calculations are 20kV (L to L) and 100MVA ( 3phase). Answer the following: a. Convert Xg into actual value b. Express Xg in p.u. using the network (new) base c. Verify the result using the equation for change of bases d. Calculate the inductance value (Lg) in p.u. on the network bases