Q2 (1). In Figure 2-1, two curves represent fault currents supplied by two sources in case of phase faults at different corresponding locations. Overcurrent protection 1 and 2 are designed to protect line A- B. If there is no directional element, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? (2). If only one directional element is available, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? A B K1 IK1 g K2 Figure 2-1 IK2
Q2 (1). In Figure 2-1, two curves represent fault currents supplied by two sources in case of phase faults at different corresponding locations. Overcurrent protection 1 and 2 are designed to protect line A- B. If there is no directional element, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? (2). If only one directional element is available, please explain how the setting values for overcurrent protection 1 and 2 could be calculated? A B K1 IK1 g K2 Figure 2-1 IK2
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter9: Unsymmetrical Faults
Section: Chapter Questions
Problem 9.37P
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![Q2
(1). In Figure 2-1, two curves represent fault currents supplied by two sources in case of phase faults
at different corresponding locations. Overcurrent protection 1 and 2 are designed to protect line A-
B. If there is no directional element, please explain how the setting values for overcurrent protection
1 and 2 could be calculated?
(2). If only one directional element is available, please explain how the setting values for overcurrent
protection 1 and 2 could be calculated?
A
B
K1
IK1
g
K2
Figure 2-1
IK2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F322742eb-4a31-4e3c-832a-7268262542b0%2Ff73621b3-dbd6-4132-98ce-8ddfffba19de%2F7ejr8l3k_processed.png&w=3840&q=75)
Transcribed Image Text:Q2
(1). In Figure 2-1, two curves represent fault currents supplied by two sources in case of phase faults
at different corresponding locations. Overcurrent protection 1 and 2 are designed to protect line A-
B. If there is no directional element, please explain how the setting values for overcurrent protection
1 and 2 could be calculated?
(2). If only one directional element is available, please explain how the setting values for overcurrent
protection 1 and 2 could be calculated?
A
B
K1
IK1
g
K2
Figure 2-1
IK2
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