800 V, 120kVA, 3-phase, 50 Hz, salient-pole synchronous generator is used in a hydroelectric dam, converting water flow into electricity via a turbine. The reactance values (Xd and Xq) are 1.95 Ω and 1.10 Ω, respectively and the terminal current is measured to be 95 A at a power factor of 0.85 lagging. The armature resistance can be considered to be negligible (Ra =0). a) Draw the phasor diagram of the generator, b) Compute the generated voltage (Êaf) when the generator delivers its rated kVA at 0.85 lagging power factor and rated terminal voltage.
800 V, 120kVA, 3-phase, 50 Hz, salient-pole synchronous generator is used in a hydroelectric dam, converting water flow into electricity via a turbine. The reactance values (Xd and Xq) are 1.95 Ω and 1.10 Ω, respectively and the terminal current is measured to be 95 A at a power factor of 0.85 lagging. The armature resistance can be considered to be negligible (Ra =0). a) Draw the phasor diagram of the generator, b) Compute the generated voltage (Êaf) when the generator delivers its rated kVA at 0.85 lagging power factor and rated terminal voltage.
Chapter3: Magnetic Starters
Section: Chapter Questions
Problem 30SQ
Related questions
Question
A 800 V, 120kVA, 3-phase, 50 Hz, salient-pole synchronous generator is used in a
hydroelectric dam, converting water flow into electricity via a turbine. The reactance
values (Xd and Xq) are 1.95 Ω and 1.10 Ω, respectively and the terminal current is
measured to be 95 A at a power factor of 0.85 lagging. The armature resistance can
be considered to be negligible (Ra =0).
a) Draw the phasor diagram of the generator,
b) Compute the generated voltage (Êaf) when the generator delivers its
rated kVA at 0.85 lagging power factor and rated terminal voltage.
ANS=Eaf=578.05exp(j9.75°)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 3 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Electricity for Refrigeration, Heating, and Air C…
Mechanical Engineering
ISBN:
9781337399128
Author:
Russell E. Smith
Publisher:
Cengage Learning
Electricity for Refrigeration, Heating, and Air C…
Mechanical Engineering
ISBN:
9781337399128
Author:
Russell E. Smith
Publisher:
Cengage Learning