Download GTU BE/B.Tech 2018 Winter 8th Sem New 2180909 Power System Operation And Control Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem New 2180909 Power System Operation And Control Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2180909 Date: 19/11/2018

Subject Name: Power System Operation and Control

Time: 02:30 PM TO 05:00 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 (a) Discuss concept of black out. 03
(b) Explain classification of Voltage Stability. 04
(c) Explain meaning of deregulated power system. Discuss its
advantages and limitations in relation to vertically integrated system.
07

Q.2 (a) List main components of Automatic voltage control scheme. 03
(b) Define generation shift factor and line outage distribution factor in
relation to security analysis.
04
(c) Draw and explain flow chart for contingency selection. 07
OR
(c) Describe Auto-Regressive Model and Auto- regressive Moving
Average Model for load forecasting.
07

Q.3 (a) List out important points of electricity act - 2003. 03
(b) Explain meaning of state estimation. 04
(c) Draw hierarchy of Load dispatch centers in India. Also list out
Locations of NLDC, Regional LDCs and that of ALDCs of Western
Region
07
OR
Q.3 (a) Explain concept of power system security. 03
(b) Define voltage collapse. Enlist the main factors that contribute the
phenomena of voltage collapse.
04
(c) Enlist different types of reactive power compensation methods for
heavily loaded and voltage stressed power systems. Explain static
VAR compensators in detail.
07


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1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2180909 Date: 19/11/2018

Subject Name: Power System Operation and Control

Time: 02:30 PM TO 05:00 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 (a) Discuss concept of black out. 03
(b) Explain classification of Voltage Stability. 04
(c) Explain meaning of deregulated power system. Discuss its
advantages and limitations in relation to vertically integrated system.
07

Q.2 (a) List main components of Automatic voltage control scheme. 03
(b) Define generation shift factor and line outage distribution factor in
relation to security analysis.
04
(c) Draw and explain flow chart for contingency selection. 07
OR
(c) Describe Auto-Regressive Model and Auto- regressive Moving
Average Model for load forecasting.
07

Q.3 (a) List out important points of electricity act - 2003. 03
(b) Explain meaning of state estimation. 04
(c) Draw hierarchy of Load dispatch centers in India. Also list out
Locations of NLDC, Regional LDCs and that of ALDCs of Western
Region
07
OR
Q.3 (a) Explain concept of power system security. 03
(b) Define voltage collapse. Enlist the main factors that contribute the
phenomena of voltage collapse.
04
(c) Enlist different types of reactive power compensation methods for
heavily loaded and voltage stressed power systems. Explain static
VAR compensators in detail.
07


2
Q.4 (a) Obtain necessary relation between maximum power and line length. 03
(b) Explain role of load dispatch center in power system. 04
(c) Describe the various operating states of power systems with
necessary diagrams.
07
OR
Q.4 (a) Explain speed governor dead-band and its effect on AGC. 03
(b) Explain restoration process after black out. 04
(c) Discuss in brief the application aspects of the primary and secondary
automatic load frequency control loops.
07

Q.5 (a) Explain significance of ? w ? in weighted least square estimation. 03
(b) List out different sources and sinks of reactive power in power
systems.
04
(c) Explain turbine speed governing mechanism. 07
OR

Q.5 (a) Explain least square estimation in brief. 03
(b) Explain functions of different entities in deregulated power system. 04
(c) Derive the expression for voltage regulation of a transmission line
and explain its relation with reactive power.
07



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