z/2 z/2 R/2 R/2 X/2 X/2 Vs V. Nominal T model of a Medium Line Circuit Globe Figure 2 (a) The nominal T-circuit of a medium transmission line shown in Figure 2 has series impedance Z divided into 2 equal parts, and shunt admittance Y at the center. Derive its ABCD [A B] 圈-E DG parameters in terms of Y and Z to get the relation of %3D LOAD

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
Chapter5: Transmission Lines: Steady-state Operation
Section: Chapter Questions
Problem 5.31P: A 500-kV, 300-km, 6()-Hz, three-phase overhead transmission line, assumed to be lossless, has a...
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I need answer for part a please 

z/2
z/2
R/2
R/2
X/2
X/2
Vs
V.
Nominal T model of a Medium Line
Circuit Globe
Figure 2
(a) The nominal T-circuit of a medium transmission line shown in Figure 2 has series
impedance Z divided into 2 equal parts, and shunt admittance Y at the center. Derive its ABCD
[A B1[VR
parameters in terms of Y and Z to get the relation of = BE-
(b) Two requirements for protective relay systems are the speed of response and selectivity.
Relays should respond to abnormal conditions in the least possible time, and provide maximum
possible service continuity with minimum system disconnection.
Assess whether the Time-Grading as well as Current-Grading types of relay system meet these
requirements, with reasons. If not, propose a better relay grading system to replace them with
supportive arguments.
LOAD
Transcribed Image Text:z/2 z/2 R/2 R/2 X/2 X/2 Vs V. Nominal T model of a Medium Line Circuit Globe Figure 2 (a) The nominal T-circuit of a medium transmission line shown in Figure 2 has series impedance Z divided into 2 equal parts, and shunt admittance Y at the center. Derive its ABCD [A B1[VR parameters in terms of Y and Z to get the relation of = BE- (b) Two requirements for protective relay systems are the speed of response and selectivity. Relays should respond to abnormal conditions in the least possible time, and provide maximum possible service continuity with minimum system disconnection. Assess whether the Time-Grading as well as Current-Grading types of relay system meet these requirements, with reasons. If not, propose a better relay grading system to replace them with supportive arguments. LOAD
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