The document outlines a proposed PhD research project aimed at enhancing power system reliability through improved protection schemes for power grids. It includes an objective, literature review highlighting key findings from various studies, and identifies research gaps in the field. References are provided to support the overview of existing methodologies and proposed advancements.

1. To enhance the Power System Reliability by
improving System Protection Scheme for
Power Grids
Name Here
A Brief Presentation For PhD Admission In The
Proposed Title as:

2. Introduction
Objective
Literature Review
Research Gap
References
Table of Content

3. Introduction
Any power system network is subjected to disturbances at any time
and place
The power system operator need better grid reliability while dealing
with an aging infrastructure
Main components of protection systems
Current & Voltage Transformer
Protective relays
Circuit Breakers
Communication Channels
 So, a modern protection system has to be implemented.

4.  To enhance the power system reliability by improving
System Protection Scheme for Power Grids.
Objective

5. Literature Review
Taxonomy Author Key Finding Methodology Ref. No.
Current &
Voltage
Transformer
• Amal C
Sunny et. al.
• Ling Xing
et. al.
• Proposed a novel
three-switch four-
port converter
• Proposed a line-
frequency
transformer (LFT)
• low semiconductor count,
• continuous current ports for PV,
• battery and dc load,
• low-voltage levels for PV and battery,
• dc and ac load voltage regulation,
• maximum power point tracking,
• battery overcharge and deep-discharge
protection,
• high-voltage boosting sans low-frequency
transformer,
• reduced power converter stages
[1, 2]

6. Literature Review
Taxonomy Author Key Finding Methodology Ref. No.
Protective
relays
• Abhishek
Gupta et.
al.
• Proposed a hybrid
fault detection index
(HFDI)
• Validated using
utility grid of IEEE-13
bus test system
• Zero sequence voltage and zero
sequence current
[3]
Circuit
Breakers
• Recardo et.
al.
• Proposed a selective
and directional
protection method
to determine the
faulty line in
ungrounded
medium voltage
networks with three
or more feeders
• Directional residual overcurrent relays
Using LVP (Low Voltage Parameter)
Circuit
[4]

7. Literature Review
Taxonomy Author Key Finding Methodology Ref. No.
Communica
tion
Channels
• Vassilis c.
et. al.
• Proposed a current
differential
protection scheme
• Conventional two-terminal
percentage current
• Multiple time-delayed differential
elements
[5]

8. Research Gap
NOTE: Image taken from ref [6]

9. Research Gap
• The Letter Highlighted in Bold font are the major areas where
most of the researchers have suggested there future
improvements.

10. [1] A. C. Sunny and D. Debnath, "A Novel Low Device Count Four-Port Converter Based Solar-Fed Off-Grid System for Catering
Household Hybrid AC/DC Loads," in IEEE Transactions on Power Electronics, vol. 38, no. 2, pp. 2658-2667, Feb. 2023, doi:
10.1109/TPEL.2022.3213991.
[2] L. Xing, Q. Wei and Y. Li, "A Practical Current Source Inverter-Based High-Power Medium-Voltage PV System," in IEEE
Transactions on Power Electronics, vol. 38, no. 2, pp. 2617-2625, Feb. 2023, doi: 10.1109/TPEL.2022.3211409.
[3] A. Gupta, R. K. Pachar, O. P. Mahela and B. Khan, "Fusion of Signal Processing Techniques to Design Current and Voltage
Features Based Protection Scheme for Utility Grid With Renewable Energy Penetration," in IEEE Access, vol. 10, pp. 118222-
118235, 2022, doi: 10.1109/ACCESS.2022.3219201.
[4] Recardo, Ronald. (2006). Overcoming resistance to change. National Productivity Review. 14. 5 - 12.
10.1002/npr.4040140203.
[5] V. C. Nikolaidis, G. Michaloudis, A. M. Tsimtsios, D. Tzelepis and C. D. Booth, "A Coordinated Multi-Element Current
Differential Protection Scheme for Active Distribution Systems," in IEEE Transactions on Power Delivery, vol. 37, no. 5, pp.
4261-4271, Oct. 2022, doi: 10.1109/TPWRD.2022.3148209.
[6] Bo, Z.Q., Lin, X.N., Wang, Q.P. et al. Developments of power system protection and control. Prot Control Mod Power Syst 1,
7 (2016). https://doi.org/10.1186/s41601-016-0012-2
References

11. Thank you !