CAIEE_PRACTICALS1_090610011033_2

8/6/2019 CAIEE_PRACTICALS1_090610011033_2

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DEPARTMENT OF ELECTRICAL ENGINEERING VIIITH

SEM ELECTRICAL ENGINEERING

G.H.RAISONI COLLEGE OF ENGINEERING, NAGPUR 1

G.H.RAISONI COLLEGE OF ENGINEERING

DEPARTMENT OF ELECTRICAL ENGINEERING

COMPUTER APPLICATION IN ELECTRICAL ENGINEERING

LIST OF EXPERIMENTS

Sr.

No

Name of Experiment Page

No.

1 Program to find A^ & A for a given system. 2

2 Program to plot swing curve of a given system by step by-step method 3

3 Program for transient stability by modified Eulers method. 4

4 To Study the transient response of RLC series circuit using MATLABSimulink

5

5 Study of simple transmission system using PSCAD software 6

6 To study one quadrant chopper operation using P-SIM software 7

7 To study Ferranti effect using MATLAB 8

8 To study transmission line model using MATLAB 9

9 To do load flow analysis using ETAP software 10


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EXPERIMENT No.1

AIM:- PROGRAM TO FIND A^ & A FOR A GIVEN SYSTEM

SAMPLE SYSTEM:-

1 2 3

321

7

4 5

6

THEORY:-

1)Write definitions related to above problem i.e. Tree, Element , graph ,oriented graph,node etc.

2)Solve for Element node incidence matrix (A) & Bus incidence matrix (A^) for above

problem.3)Write program & draw flowchart for above problem.

RESULT:-

Verify the computer result with manual calculation.

DISCUSSIONS:-

1. What is the need of finding matrices A,B,..etc.2. Define Tree,Co-Tree and graph.


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EXPERIMENT No.-2

AIM :- PROGRAM TO PLOT SWING CURVE OF A GIVEN POWER SYSTEM

BY STEP BY-STEP METHOD

SAMPLE PROBLEM:-

A 20 MVA,50 Hz ,generator delivers 18 MW over a double ckt. line to aninfinite bus.The generator has kinetic energy of 2.52 MJ/MVA at rated speed.The

generator transient reactance is Xd=0.35 p.u. Each transmission 20 MVA base E=1.1p.u. & infinite bus voltage v=1 p.u. on a 20 MVA base .A 3 short ckt. occurs at midpoint of one of transmission line .Plot swing curve with fault cleared by simultaneousopenings of breakers at both ends of the line at 2.5 cycles & 6.25 cycles after occurrence

of fault . also plot swing curve over the period at 0.5 sec., if fault is sustained.

THEORY:-

1) Numerical solution of swing equation by point to point method.2) Solve above problem in tabular form for different cycles as given in problem

using step-by-step method.

3) Write a program for above problem.RESULT:-

Analytical and graphical values are found out to be the same and correspondingswing curves are plotted.

DISCUSSION:-

1. Define stability?2. Compare different methods to determine Stability.


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EXPERIMENT No.3

AIM:- PROGRAM FOR TRANSIENT STABILITY ANALYSIS BY MODIFIED

EULERS METHOD.

SAMPLE PROBLEM:-Synchronous machine shown in fig. is generating 100 MW and 75 MVAR,

voltage of infinite bus ,q is 1+j 0 and line reactance 0.08 p.u. .Inertia constant is 4 p.u. on a 100 MVA base .The machine transient reactance is 0.2 .

Calculate the changes in phase angle in speed of generator for a 3 to ground fault at bus

p for a duration of 0.1 sec. Using modified Eulers method ,Take time for solution =0.2

sec. With t=0.04 sec.,frequency 50 hz.

p qEI

PE

Xd=0.2

Pq

Vp

Xpq=0.08

QE

EI=1.2013.45

THEORY:-

1)Write the Algorithm for modified Eulers method.2)Solve the above problem by modified Eulers method.

3)Write the program for above problem.

CONCLUSION :-

The critical clearing time for above problem is .

& the corresponding rotor angle is .

DISCUSSIONS:-1. Compare Eulers Method With Mod. Eulers Method.2. Give Limitations Of Above Method.


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EXPERIMENT No. 4

AIM :- TO STUDY THE TRANSIENT RESPONSE OF RLC SERIES CIRCUIT

USING MATLAB SIMULINK.

CKT. DIAGRAM:-

THEORY:-

1) Brief description of MATLAB software.2) Write Transfer function of RLC series circuit.3) Advantages of using software for analysis.

PROCEDURE:-1) Solve the problem manually.2) By using MATLAB software feed the data of above problem.3) Do the analysis by MATLAB software.4) Compare both the results.

RESULT:-Hence transient response of RLC series circuit has been studied using

MATLAB software.

DISCUSSIONS:

1. Compare MATLAB programming with C programming.2. Explain effect of change in resistance on transient response.


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EXPERIMENT No:- 5

AIM:- STUDY OF SIMPLE TRANSMISSION SYSTEM USINGPSCAD SOFTWARE.

CKT. DIAGRAM :-

THEORY:

1. Explain about PSCAD Software2. Write about different transmission line models.3. Complete description of the given system.

PROCEDURE:-

1. By using PSCAD software Draw the above system2. By creating fault, do the analysis by using PSCAD Software

Result: - Hence response of AC transmission line has been studiedusing PSCAD Software .

DISCUSSIONS:-

1. Which transmission line model is used in this experiment.2. Explain different types of fault.


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EXPERIMENT No:- 6

AIM: TO STUDY ONE QUADRANT CHOPPER OPERATIONUSING P-SIM SOFTWARE.

CKT. DIAGRAM :-

THEORY: -

1. Explain about PSIM Software2. Types of choppers

PROCEDURE:-

1. By using PSIM software Draw the above system2. simulate above circuit by using PSIM Software

RESULT: -Attached Output response of above circuit.

Hence Output response of first quadrant operation of D.C. chopper is studied

using PSIM software.

DISCUSSIONS:-

1. Explain in brief one Quadrant Chopper.2. How you change the simulation time step.


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EXPERIMENT No:- 7

AIM: TO STUDY FERRANTI EFFECT USING MATLAB.

SAMPLE PROBLEM : A 3- , 50 hz transmission line is 400 km long. The voltage at

the sending end is 220 kv. The line parameters are r = 0.1250 / km ,x = 0.4 /km and g = 2.8*10

-6mho/km.Now if the line is open circuited with a

receiving end voltage of 220 kv, find the r.m.s. value and phase angle of following:-

a) The incident and reflected waves of voltages toneutral at the receiving end .

b) The incident and reflected voltages to neutralat 200 km from receiving end.

THEORY:-

1) Brief description of MATLAB software.2) Write about Ferranti effect.3) Advantages of using software for analysis.

PROCEDURE:-1) Solve problem manually .2) By using MATLAB software feed the data of above

problem.

3) Do the analysis by MATLAB software.4) Compare both the results.

RESULT:-

Verify the computer result with manual calculation.

DISCUSSIONS:-

1. Explain the importance of conductance g.2. What is the effect of increase in line length.


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EXPERIMENT No:- 8

AIM:-To study transmission line model using MATLAB .

SAMPLE PROBLEM:-

A 50 Hz, Transmission line 300 km long has a total series impedance of 40+j1.25and a total shunt admittance of 10-3 mho .the receiving end load is 50 MW at 220 kv with

0.8 lagging power factor . Find the sending end voltage ,current ,power & power factor

using :-a) Shunt line approximation .b) Nominal method.

THEORY:-4) Brief description of MATLAB software.5) Types of Transmission line model.6) Advantages of using software for analysis.

PROCEDURE:-

4) Solve problem manually .5) By using MATLAB software feed the data of above

problem.

6) Do the analysis by MATLAB software.4) Compare both the results.

RESULT:-

Transmission line is studied using MATLAB software with the help oftwo methods.

a) Shunt line approximation .b) Nominal method.

DISCUSSIONS:-

1. How you create functions in MATLAB.2. Which model should be used for long transmission line?


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EXPERIMENT No:- 9

AIM: TO DO LOAD FLOW ANALYSIS USING ETAP SOFTWARE

PROBLEM:

For the system shown compute bus voltage using Gauss Seidal iterative method. Assume

bus 1 as slack bus. Impedances of the elements are given at 100 MVA. Base scheduledgeneration and load assume bus voltage as given bleow

GENERATION LOADBUS

CODE

ASSUME BUS

VOLTAGE MW MVAR MW MVAR

1 1.05 --- --- --- --

2 1+J0 10 40 50 20

3 1+J0 0 0 40 10

CKT. DIAGRAM :-

0.02+j0.02

0.01+j0.01 0.03+j0.033 1

2

THEORY:b. Explain about ETAP softwarec. Write about load flow analysisd. Advantages of using software for analysis

PROCEDURE:

1) Solve the Problem manually.2) By using ETAP software feed the data of above

problem.

3) Do the analysis by ETAP software.4) Compare Both the results.

DISCUSSIONS:-

1. List different numerical techniques for loadflow analysis .

2. Which method you have used for thisproblem.

G

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CAIEE_PRACTICALS1_090610011033_2