Q. Figure shows a biased percentage differential relay applied for the protection of generator windings. The relay has a 10 % slope, assuming that the CTs have a 400/5-ampere ratio and no inaccuracies (a)- if the fault has occurred near the grounded neutral end of the generator when the generator is carrying load. As a result, the currents flowing at each end are as shown in the figure. will the relay operate to trip the generator this condition, or no? show the relay operating characteristic and the points that represent the operating and restraining currents (1A=i1-i2) and (i=(i1+i2)/2) in the relay for the two conditions. (b)- Will changing the conversion ratio of current transformers to 200/5 and 400/1 change the performance of the relay? (c)- If the current 320+j0 is constant, specify what will be the maximum output current of the relay? 320+i0 304+jo Generator Coil Differential Relay%

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
icon
Related questions
Question
i need the answer quickly
Q. Figure shows a biased percentage differential relay applied for the protection of generator windings. The relay has a 10 % slope,
assuming that the CTs have a 400/5-ampere ratio and no inaccuracies
(a)- if the fault has occurred near the grounded neutral end of the generator when the generator is carrying load. As a result, the
currents flowing at each end are as shown in the figure. will the relay operate to trip the generator this condition, or no? show the
relay operating characteristic and the points that represent the operating and restraining currents (1A=i1-i2) and (i=(i1+i2)/2) in
the relay for the two conditions.
(b)- Will changing the conversion ratio of current transformers to 200/5 and 400/1 change the performance of the relay?
(c)- If the current 320+j0 is constant, specify what will be the maximum output current of the relay?
320+i0
304+jo
Generator Coil
Differential Relay%
Transcribed Image Text:Q. Figure shows a biased percentage differential relay applied for the protection of generator windings. The relay has a 10 % slope, assuming that the CTs have a 400/5-ampere ratio and no inaccuracies (a)- if the fault has occurred near the grounded neutral end of the generator when the generator is carrying load. As a result, the currents flowing at each end are as shown in the figure. will the relay operate to trip the generator this condition, or no? show the relay operating characteristic and the points that represent the operating and restraining currents (1A=i1-i2) and (i=(i1+i2)/2) in the relay for the two conditions. (b)- Will changing the conversion ratio of current transformers to 200/5 and 400/1 change the performance of the relay? (c)- If the current 320+j0 is constant, specify what will be the maximum output current of the relay? 320+i0 304+jo Generator Coil Differential Relay%
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Similar questions
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,