Download PTU M.Tech. EE 3rd Semester 36014 POWER SYSTEM PLANNING Question Paper

Download PTU. I.K. Gujral Punjab Technical University (IKGPTU) M.Tech. EE 3rd Semester 36014 POWER SYSTEM PLANNING Question Paper.

1 | M-36014 (S9)-872

Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(EE)/(Power Engg.) (Elective-IV) (Sem.?3)
POWER SYSTEM PLANNING
Subject Code : ELE-519/PEE-523
M.Code : 36014
Time : 3 Hrs. Max. Marks : 100

INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.

Ql. What are short term load forecasting and long-term load forecasting? Explain with the
different forecasting components being used. [20]
Q2. For the system shown in fig (i), I
1
= 0.8/0 p.u. and I
2
= 1.0/0 p.u. Line impedances are 0.04
+ j0.12 p.u., 0.03 + j0.1p.u. and 0.03 + j0.12 p.u. for the sections a,b and c respectively.
The voltage at load bus is 1/0 p.u. Find the loss coefficients and the transmission loss. [20]


Fig (i)
Q3. (a) How do the equations for economic operation of thermal plant get modified if the
minimum and maximum loadings of generators are specified? [6]
(b) A system has three generators whose cost curves can be described by the following
equations : [7]
C
1
= 450 + 6.5P
1
+ 0.0013P
1
2
Rs/hour
C
2
= 300 + 7.8P
2
+ 0.0019P
2
2
Rs/hour
C
3
= 80 + 8.1P
2
+ 0.005P
3
2
Rs/hour
b
I + I
1 2
I
2
I
1
a
c
2
1
SOURCE
SOURCE
LOAD
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1 | M-36014 (S9)-872

Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(EE)/(Power Engg.) (Elective-IV) (Sem.?3)
POWER SYSTEM PLANNING
Subject Code : ELE-519/PEE-523
M.Code : 36014
Time : 3 Hrs. Max. Marks : 100

INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.

Ql. What are short term load forecasting and long-term load forecasting? Explain with the
different forecasting components being used. [20]
Q2. For the system shown in fig (i), I
1
= 0.8/0 p.u. and I
2
= 1.0/0 p.u. Line impedances are 0.04
+ j0.12 p.u., 0.03 + j0.1p.u. and 0.03 + j0.12 p.u. for the sections a,b and c respectively.
The voltage at load bus is 1/0 p.u. Find the loss coefficients and the transmission loss. [20]


Fig (i)
Q3. (a) How do the equations for economic operation of thermal plant get modified if the
minimum and maximum loadings of generators are specified? [6]
(b) A system has three generators whose cost curves can be described by the following
equations : [7]
C
1
= 450 + 6.5P
1
+ 0.0013P
1
2
Rs/hour
C
2
= 300 + 7.8P
2
+ 0.0019P
2
2
Rs/hour
C
3
= 80 + 8.1P
2
+ 0.005P
3
2
Rs/hour
b
I + I
1 2
I
2
I
1
a
c
2
1
SOURCE
SOURCE
LOAD
2 | M-36014 (S9)-872

Where C
1
, C
2
and C
3
are the costs and P
1
, P
2
, P
3
are outputs in MW of units 1,2,3
respectively. If total load of 800MW is to be shared by the three units, find optimum
scheduling.
(c) For the above three generator system, the maximum and minimum outputs are specified
as under : [7]
Unit l Max. Output 600MW
Min Output 100MW
Unit 2 Max. Output 400MW
Min Output 50MW
Unit 3 Max. Output 200MW
Min Output 50MW
Find the optimum scheduling.
Q4. What is equal incremental cost criterion? Discuss the importance of proper load allocation
in power plants. What information must be available for optimum load allocation? [20]
Q5. Discuss the methods commonly used for deciding the load allocation between the units of a
power plant. How can the effect of transmission loss be included in optimum scheduling in
power plants? [20]
Q6. (a) What are the characteristics of Interactive Graphic systems? Give examples of the use
of graphic systems in line design and power-flow analysis. [10]
(b) Discuss automated transmission planning using the DC power flow model as the linear
system model. [10]
Q7. (a) What is meant by co-generation? What are the reasons for promoting cogeneration in
decentralized environment? Discuss. [10]
(b) Discuss the characteristics of steam generation units and suggest methods for
improving unit efficiency and reliability of the steam plant. [10]
Q8. Write short notes on :
(a) Emerging power interchange [10]
(b) Distribution automation [10]

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