Exam Details
| Subject | interconnected power systems | |
| Paper | ||
| Exam / Course | pddc | |
| Department | ||
| Organization | Gujarat Technological University | |
| Position | ||
| Exam Date | November, 2018 | |
| City, State | gujarat, ahmedabad |
Question Paper
1
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-VII EXAMINATION WINTER 2018
Subject Code:X70902 Date: 19/11/2018
Subject Name: Inter Connected Power System
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1
Explain advantages and dis advantages of Interconnected Power System.
03
Define: Tree and Co Tree
Planner and Non Planner Graph
04
Obtain YBUS matrix for the system shown in figure .The Shunt admittances at all the buses are assumed to be negligible. The impedances between the connected two buses are shown in figure.
07
Q.2
Explain: Bus Incidence matrix
03
Using suitable example explain Primitive admittance Matrix in load flow analysis of power system.
04
Describe the methods of voltage control adopted in power system.
07
OR
Explain cascade tripping and network islanding.
07
Q.3
Discuss the procedure for solving the swing equation using point by point method.
07
Prove that Md2 δ/dt2 Pm-Pe, Pm is mechanical power, Pe is electromagnetic power and M is angular momentum
07
2
OR
Q.3
Define various stability Limits.
03
Explain Equal Area Criterion with suitable example
04
Compare GS and NR method for load flow
07
Q.4
Explain the importance of Slack bus in power system analysis.
03
List the factors affects the transient Stability Limit in brief
04
Explain the functions of load dispatch centre and its distribution in India in detail.
07
OR
Q.4
Sate the advantages of Ybus over Zbus.
03
Explain the Unit commitment.
04
Derive the expression for B-coefficients.
07
Q.5
Explain the various types of buses used in load flow analysis.
03
Describe the concept of steady state stability in brief.
04
With the help of a neat diagram explain turbine speed governing mechanism
07
OR
Q.5
State the objectives of Load flow study in power system.
03
Derive relation between the M and H.
04
A two pole 50 Hz 60 MVA turbo generator has a moment of inertia of 9 ×103 kg-m2 . Calculate the kinetic energy in MJ. Inertia constant M and H (iii)Inertia constant at 50 MVA.
07
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
PDDC SEMESTER-VII EXAMINATION WINTER 2018
Subject Code:X70902 Date: 19/11/2018
Subject Name: Inter Connected Power System
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1
Explain advantages and dis advantages of Interconnected Power System.
03
Define: Tree and Co Tree
Planner and Non Planner Graph
04
Obtain YBUS matrix for the system shown in figure .The Shunt admittances at all the buses are assumed to be negligible. The impedances between the connected two buses are shown in figure.
07
Q.2
Explain: Bus Incidence matrix
03
Using suitable example explain Primitive admittance Matrix in load flow analysis of power system.
04
Describe the methods of voltage control adopted in power system.
07
OR
Explain cascade tripping and network islanding.
07
Q.3
Discuss the procedure for solving the swing equation using point by point method.
07
Prove that Md2 δ/dt2 Pm-Pe, Pm is mechanical power, Pe is electromagnetic power and M is angular momentum
07
2
OR
Q.3
Define various stability Limits.
03
Explain Equal Area Criterion with suitable example
04
Compare GS and NR method for load flow
07
Q.4
Explain the importance of Slack bus in power system analysis.
03
List the factors affects the transient Stability Limit in brief
04
Explain the functions of load dispatch centre and its distribution in India in detail.
07
OR
Q.4
Sate the advantages of Ybus over Zbus.
03
Explain the Unit commitment.
04
Derive the expression for B-coefficients.
07
Q.5
Explain the various types of buses used in load flow analysis.
03
Describe the concept of steady state stability in brief.
04
With the help of a neat diagram explain turbine speed governing mechanism
07
OR
Q.5
State the objectives of Load flow study in power system.
03
Derive relation between the M and H.
04
A two pole 50 Hz 60 MVA turbo generator has a moment of inertia of 9 ×103 kg-m2 . Calculate the kinetic energy in MJ. Inertia constant M and H (iii)Inertia constant at 50 MVA.
07
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