Join us for an insightful thesis defense presentation on elevating the transient stability of power systems using Static Var Compensators (SVC) and Power System Stabilizers (PSS). Delve into the innovative solutions that bolster the reliability and robustness of modern electrical grids. Explore the research, methodologies, and practical applications that illustrate how SVC and PSS technologies can effectively address transient disturbances, safeguarding our energy infrastructure. Discover the future of power system stability – it starts here!

1. Improvement of Transient
Stability using SVC and PSS
Supervised By:
Prof. Dr. Mirza Golam Rabbani
Presented By:
Md. Shahalam (191800043)
Md. Rakibul Hassan Rakib (191800041)
Md. Borhan Uddin (191800037)

2. 01
06
02
07
03
08
TABLE OF CONTENTS
Introduction
Static Var
Compensator
(SVC)
Objective of
the Study
System
Mechanism
Literature
Review
Results
And
Discussions
04 05
Transient
Stability
Power System
Stabilizer (PSS)
09
Conclusions
And Future
Scope of Work
10
References

3. INTRODUCTION
01

4.  About Our Team and Supervisor
 Background of The study
 Short Discussion about How Power system works
 SVC and PSS
 Why Need Stability

5. Power System Stabilizer
PSS
Static VAR Compensetor
SVC

6. OBJECTIVE OF
THE STUDY
02

7.  To simulate and analyze the behavior of system during transient conditions
occurring in the network.
 To study structure of SVC and PSS and effect when connected to the power
system.
 To simulate and analyze the power system model with transient
disturbance in MATLAB with SVC and PSS.
 To analyze SIMULINK model for various parameters like rotor angle, speed
oscillation, magnitude voltage, line power, positive sequence voltage,
terminal voltage using PI controller along with Static Var Compensator
(SVC).

8. LITERATURE REVIEW
03

9. REVIEW PAPER I
Name of Paper
Impact of PSS and SVC on the Power System Transient Stability.
Authors
Omar Mohammed Benaissa, Samir Hadjeri, Sid Ahmed Zidi
Objectives
The objective of this paper lies behind the transient stability improvement of
power system using SVC and PSS (device of FACTS Family). Due to this
application it increases the power transfer and improves the disturbances of
the system.

10. REVIEW PAPER I
Observations and Conclusions
In this research paper, Two machines are assumed. A three-phase or single
phase fault is created at bus 1 at time t=0.1 sec. The fault is cleared after time
span of t=0.2 sec. The oscillations occurring in the system are totally damped
out due to presence of Static Var Compensator (SVC) and Power System
Stabilizer (PSS).
Thus, it is justified that FACTS devices are very effective in enhancing power
system stability (Transient Stability). But without proper control the required
results cannot be achieved.

11. TRANSIENT STABILITY
04

12.  Transient Stability involves the study of power system following a major
disturbance.
 Following a large disturbance, the synchronous alternator the machine
power (load) angle changes due to sudden acceleration of the rotor shaft.
 The objective of the transient stability is to ascertain whether the load
angle returns to a steady value following the clearance of the disturbance.

13. POWER SYSTEM
STABILIZER (PSS)
05

14. • PSS are generator control equipment
that is used in feedback to enhance
the damping to rotor oscillation
caused due to signal disturbance.
• This disturbance may be caused by the
even a small change in the reference
voltage of the automatic voltage
regulator/exciter which results in
ever-increasing rotor oscillation
• Types of PSS
1. Speed-based stabilizer
2. Frequency-based stabilizer
3. Power-based stabilizer

15. STATIC VAR
COMPENSATOR (SVC)
06

16. • Static var compensator (SVC) is the
earliest flexible Ac transmission
system (FACTS) device. It generates or
absorbs reactive power at the point of
the connection, usually in the middle
of the high-voltage transmission line.
• Types of SVC :
1. Thyristor-controlled reactor
(TCR)
2. Thyristor switched capacitor
(TSC)
3. Harmonic filter (FC)

17. • Why we use SVC ?
SVC is used to maintain the voltage
magnitude at the middle of a long
transmission line, thereby to increase
the power transfer capability in a
given transmission line.

18. SYSTEM MECHANISM
07

19. Study on Single Line Diagram of The System
01

20. Take Two Synchronous Machines Block
02
Create Two Turbine and Regulators Block
03
04 Take Two Three-Phase Transformers
(Two Windings) Block

21. Take Distributed Parameters
Line Block
05
Take a Three-Phase Fault Block
06
07 Take a Three-Phase RLC Parallel
Load Block

22. Take 3 Three-Phase VI
Measurements Block
08
Take a SVC Block
09
10 Create a PV
Measurement Block
Create a Controlling Mechanism of PSS
Block
11

23. Take a Scope Block
13
Create a Machines Signals Block
12
14 Take a Powergui
Block

24. Simulation Model of The System
15

25. RESULTS &
DISCUSSIONS
08

26. Single – Phase Fault – Impact of PSS – No SVC
Simulation Results for without PSS and SVC Simulation Results for with PSS and SVC
Fig. 1. Fixed Susceptance vs Time
Fig. 2. SVC Measured Voltage vs Time
5 10 15 20 4 6 8 10 12 14 16 18

27. Fig. 3. Rotor Angle Difference vs Time
Fig. 4. Machine Speeds vs Time
Fig. 5. Terminal Voltages vs Time
2 4 6 8 10 12 14 16 18 20 22
2 4 6 8 10 12 14 16 18 20 22
4 6 8 10 12 `14 16 18 20 22 24
4 6 8 10 12 `14 16 18 20 22 24

28. Fig. 6. Positive Sequence Voltage vs Time
Fig. 7. Line Power vs Time
4 6 8 10 12 14 16 18 4 6 8 10 12 14

29. CONCLUSIONS AND
FUTURE SCOPE OF WORK
09

30.  The transient stability of a two machine system was obtained by using the
static var compensator and power system stabilizer.
 The stabilizer improved the damping of ossicilations created in the
machine by the three-phase fault.
 The reactive power improvement was done by static var controller by
injecting reactive power in the system or receiving the reactive power by
the controller.
 Hence by improving of the transient stability was done by using Mat Lab
simulink software.
CONCLUSIONS

31. FUTURE SCOPE OF THE WORK
 In future, we want to more improve transient stability by using others fact
devices like STATCOM (Static Synchronous Compensator) or TCSC
(Thyristor Controlled Series Compensator) or TCPST (Thyristor Controlled
Phase Shifting Transformer) or UPFC (Unified Power Flow Controller) etc. in
the proposed system.
 We want to enhance transient stability of two generating stations of
Bangladesh during the three phase or single phase fault occurs.
 To design and analyze the performance of Fuzzy logic controller in SVC for
improving power system stability in Multi-machine system.
 To coordinate various FACTS devices for improvement of the power system
stability.

32. REFERENCES
10

33.  N. Anil kumar, K. Ramesh, “Transient stability improvement using svc and
pss”, International Research Journal of Engineering and Technology
(IRJET), Volume: 03 Issue: 07 July, 2016.
 Omar Mohammed Benaissa, Samir Hadjeri, Sid Ahmed Zidi, “Impact of PSS
and SVC on the Power System Transient Stability”, 8th International
Conference on Modelling, Identification and Control (ICMIC-2016) Algiers,
Algeria- November 15-17, 2016.

34. THANK YOU