Download GTU BE/B.Tech 2018 Winter 8th Sem Old 180906 Advanced Power System Ii Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 8th Sem Old 180906 Advanced Power System Ii Previous Question Paper

Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (OLD) EXAMINATION ? WINTER 2018
Subject Code: 180906 Date: 29/11/2018

Subject Name: Advanced Power System -II

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.

Q.1 (a) What is voltage stability? Explain different types of voltage stability. 07
(b) Draw static security level diagram presented by stott et al. 07
Q.2 (a) Draw a schematic diagram showing the information flow between the various
function to be performed in an operations control center computer system.
07

(b) Explain least square approximation method for state estimation. 07

OR

(b) Write a short note on treatment of bad data and its detection. 07
Q.3 (a)
Draw a complete flowchart for contingency analysis.
07
(b) Prove that the receiving end voltage is extremely sensitive to any change in
Power status at the receiving end bus.
07

OR

Q.3 (a) Define and explain sensitivity factors. 07
(b) With the help of analytical concept of voltage stability for a two bus system, define
critical receiving end voltage for an uncompensated lossless line transmission
system operating at unity power factor.
07
Q.4 (a) What is the role of load forecasting? How it reflects in current and future trends? 07
(b) Explain the characteristics of (i) the receiving end voltage of a basic power
transmission system for varying system reactance and, (ii) the characteristic of
voltage V/s system short circuit capacity for any fixed value of real power flow
Considering leading, u.p.f. and lagging power factors load.
07

OR

Q.4 (a) Explain auto regressive model for stochastic time series approach. 07
(b) Explain the operation of synchronous condenser in steady state using V-I
characteristics. Provide its application.
07
Q.5 (a) Explain structure of vertically integrated utility. 07

(b) What are the problems occurring in restoration after blackout. 07

OR

Q.5 (a) Explain structure and entities in deregulated industries. 07
(b) Explain the V-P characteristics of static impedance load and dynamic impedance
load for different tap position.
07

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