HOD Corner
The month of September 2026 has been a vibrant and
enriching period for the Department of Electrical Engineering at K. K. Wagh
Institute of Engineering Education and Research, Nashik. This edition of our
newsletter captures the spirit of learning, innovation, achievement, and
collaboration that continues to shape our departmental journey.
From expert lectures and industrial visits to
internship progress reviews, alumni interactions, and student competitions, our
activities have consistently focused on bridging the gap between academic
knowledge and real-world engineering practices. The achievements of our
students and faculty in academics, research, innovation, and professional
engagement reflect our collective commitment to excellence. Equally encouraging
are the initiatives that strengthen the bond between students, parents,
faculty, alumni, and industry.
This edition also highlights the dedication of our
faculty members, the enthusiasm of our students, and the importance of
continuous learning beyond the classroom. The student article on smart
transformer condition monitoring further demonstrates how fundamental
engineering concepts can be connected with emerging technologies to address
real-world challenges.
As we continue our journey towards developing
competent, innovative, and socially responsible engineers, I sincerely
appreciate the contributions of our faculty, students, alumni, and industry
partners. I also extend my gratitude to the newsletter editorial team for
documenting and sharing these accomplishments.
Let us continue to learn, innovate, collaborate,
and inspire!
Department Events
Expert Lecture on “Transformer Testing” Conducted for SY Electrical Engineering Students (Div A & B) on 29/09/2026!
An Expert
lecture has been
arranged by EFFECT On-Campus of the Electrical Department on "Transformer
Testing" for Second Year Electrical Division A and B students and staff of the department on 29/09/2026. Resource
Person: Mr. S. S. Pawar, MSETCL, Nashik. Total No. of Students present =
75. The expert lecture provided valuable practical knowledge and
industry-oriented insights. Students understood different transformer testing
methods, including polarity test, open-circuit test, short-circuit test, and
insulation resistance test, along with the purpose and significance of each.
Expert Lecture on “Need of electronics and electrical in industry” Conducted for SY Electrical Engineering Students (Div A & B) on 30/09/2026!
An Expert
lecture has been arranged by EFFECT On-Campus of the Electrical Department on “Need of electronics and electrical in
industry" for Second Year Electrical Division A and B students and staff
of the department on 30/09/2026. Resource Person: “Mr. Sanjay Chaudhari”, Director, Electronics Study Centre, Nashik,
India. Total No. of Students present = 135. The expert lecture enhanced
students’ understanding of the subject by providing practical, industry-oriented
knowledge and real-world examples. It helped students connect theoretical
concepts with their practical applications and develop better technical
understanding. The session also created awareness about recent technologies,
industry practices, career opportunities, and professional requirements. It
encouraged students to develop problem-solving skills, technical thinking, and
a lifelong learning attitude.
Parent Meeting on Academic Progress and Student Development!
On 19th September 2026, the Department of Electrical
Engineering organized a Parent Meeting
for Second Year and Third Year students to discuss the academic progress,
learning journey, and overall development of their wards. The interaction provided an opportunity for parents and faculty
members to share feedback, discuss students’ progress, understand their
strengths and areas for improvement, and work together towards their continued
academic and professional growth.
Heartfelt appreciation to Prof. Ashwini Khaire for successfully coordinating the Parent
Meeting and to all the faculty members and parents for their active
participation and valuable support.
Together, we continue to create a supportive ecosystem
for our students to learn, grow, and excel.
Celebrating the Bond Between Teachers and Students
On 7th September 2026, the EFFECT Student Body of the
Department of Electrical Engineering celebrated Teachers’ Day with warmth,
gratitude, and heartfelt emotions.
As a beautiful gesture of respect, students offered
flowers to their teachers and sought their blessings.
A few faculty members also shared their feelings,
experiences, and words of guidance with the students—reminding everyone that
teaching is not merely about academics, but about shaping lives, building
confidence, and helping students discover their potential.
The celebration was a wonderful reminder that the
relationship between a teacher and a student goes far beyond the classroom. It
is built on trust, respect, learning, and countless small moments that stay with
us for life.
Heartfelt appreciation to the EFFECT Student Body and all
our students for making the occasion so special.
Student Corner
Celebrating Placement Success with a Parents' Felicitation! 🎉
On 5th September 2026, we had the pleasure of
felicitating the proud parents of Mr.
Aditya Waghaskar on his successful placement in a multinational company.
The felicitation was carried out by Dr. Ravindra Munje and Mr.
Hemant Patil at their residence, as a small gesture of appreciation for the
unwavering support, sacrifices, and encouragement that parents provide
throughout a student’s journey.
Every student’s achievement is not just an individual
success—it is a reflection of the dreams, support, and blessings of their
parents.
A Proud Moment for the Department!
Heartiest congratulations to Saurabh Deore and Sumit Kadam for securing 1st Position in Eureka
2026!
Strengthening Industry–Academia Connect: Internship Review at ABB India Limited!
On 3rd September 2026, Dr. Ravindra Munje and Prof. Nayana Jangle visited ABB India
Limited to review the internship progress of our students Ms. Shravani Shelke, Mr. Omkar Jadhav, Ms. Leena Bhoi, Ms. Shraddha
Chavan, Mr. Ayush Wani, Ms. Prerna Sagale, Mr. Akshay Patil, Mr. Malhar
Mahajan, Ms. Sanskruti Kadam, and Mr.
Vikrant Harne.
During the visit, we interacted with Mr. Vishal Kulkarni, Ms. Sukhada Raut, Mr. Sachin Patil, and Mr. Anil Wagh to discuss the students’
learning, performance, and overall internship experience.
Such interactions strengthen the industry–Academia
connect and provide students with valuable exposure to real-world engineering
practices.
Alumni Connect | FY Induction Programme
On 8th September 2026, our distinguished alumnus Mr. Saurabh Sonawane joined the FY
Induction Programme and interacted with our newly admitted students.
His warm interaction and willingness to answer every
question made the students feel comfortable and confident as they begin their
engineering journey.
Thank you, Saurabh, for reconnecting with your alma mater
and inspiring our students!
Celebrating Academic Excellence!
On 8th September 2026, during the FY Induction Programme,
the Department of Electrical Engineering felicitated the FY Toppers of the
Academic Year 2025–26 for their outstanding academic performance.
The felicitation was conducted in the presence of Dr.
Ravindra Munje, Mr. Saurabh Sonawane, Prof. Nayana Jangle, Prof. Jitendra
Patil, and Prof. Ashwini Khiare.
May your achievement inspire our newly admitted students
to set ambitious goals, work consistently, and strive for excellence.
Keep learning. Keep growing. Keep inspiring!
Students in Action: Engineering Beyond the Classroom!
On 2nd September 2026, students at K K Wagh Institute of
Engineering Education and Research represented the institute as part of Team
Brahmastra Formula at SAE SUPRA 2026, the Formula Student (FSAE) competition
organized by SAEINDIA in Delhi.
Competing against 61 teams, our students demonstrated how
classroom learning can be transformed into real-world engineering, teamwork,
problem-solving, innovation, and leadership.
A special mention to our Electrical Engineering students
who actively contributed as members of Team Brahmastra Formula:
Participation in competitions like SAE SUPRA gives
students an opportunity to design, build, test, troubleshoot, compete, and
learn from challenges—experiences that go far beyond textbooks and classrooms.
Proud of our students for engineering, experimenting,
competing, and learning!
Industry Internship
Progress Review – Narkhede Switchgear Pvt. Ltd
Today, on 10th September 2026, Dr. Saravanan S visited Narkhede Switchgears to review the
internship progress of our students:
During the visit, he interacted with the Industry Guide, Mr Saurabh Shewale, to discuss the
students’ learning progress, performance, technical skills, and overall
internship experience.
Industry Internship Progress Review – Montex Glass Fibre Industries Pvt Ltd
Today, on 10th September 2026, Dr. Saravanan S visited Montex
Glass Fibre Industries Pvt Ltd to assess the internship progress of our
students: Saurabh Mali and Vijay More.
During the visit, he interacted with the Industry Guide, Mr. Sagar Dhatrak, to discuss the
students’ learning progress, performance, technical skills, and overall
internship experience.
Celebrating Academic Excellence!
On 8th September 2026, during the FY Induction Programme,
the Department of Electrical Engineering felicitated our students who secured
outstanding results in CET and JEE.
These achievements reflect the students' hard work,
commitment, perseverance, and determination to excel.
Congratulations to Geet, Aayush and Pranav!
Keep learning. Keep striving. Keep achieving!
Industry Internship
Progress Review | Lucy Electric Limited, Nashik!
On 8th September 2026, Prof. Sudhir Shinde visited Lucy
Electric Limited, Nashik, to review the progress of our students undergoing
their internships.
He interacted with the students Gayatri Gullapalli, Pratiksha Jadhav, Gaurav Savale, Piyush Jadhav,
Ankita Karanjkar, Rucha Lokhande, and Divya Katkade and discussed their
learning, work, and progress with industry experts and guides Mr. Anil Musale, Mr. Janardan Kakad, and
Mr. Akshay Chaudhari.
Such industry-academia interactions provide valuable
insights into students’ professional development and strengthen the connection
between classroom learning and real-world engineering practices.
Industrial Visit to Rishabh Instruments, Nashik!
On 15 September 2026, the Department organized an
industrial visit to Rishabh Instruments,
Nashik for the Second-Year Electrical Engineering students of Div. B.
The visit provided students with valuable exposure to
industrial practices, manufacturing processes, instrumentation, and real-world
applications of electrical engineering concepts.
The visit was coordinated by Ms. Sonali Patil, ensuring a
meaningful and well-organized learning experience for the students.
Such industry interactions help bridge the gap between
classroom learning and practical engineering applications.
Industrial Visit to Nashik Transformer Industries!
On 16 September 2026, the Department organized an
industrial visit to Nashik Transformer
Industries for the Second-Year Electrical Engineering students.
The visit offered students valuable exposure to
transformer manufacturing, testing, industrial practices, and the practical
application of electrical engineering concepts.
The visit was coordinated by Prof. Sudhir Shinde and Prof. Atul Shewale, providing students with
an enriching and meaningful industry-learning experience.
Such industrial visits play an important role in
connecting classroom concepts with real-world engineering practices.
Industrial Visit to Rishabh Instruments, Nashik!
On 17 September 2026, the Department organized an
industrial visit to Rishabh Instruments,
Nashik for the Second-Year
Electrical Engineering students of Div. A.
The visit provided students with valuable exposure to
industrial practices, manufacturing processes, instrumentation, and real-world
applications of electrical engineering concepts.
The visit was coordinated by Prof Ashwini Khaire, ensuring a meaningful and well-organized
learning experience for the students.
Such industry interactions help bridge the gap between
classroom learning and practical engineering applications.
Bridging Classroom Learning with Industrial Exposure!
On 18th September 2026, both divisions of Third Year
Electrical Engineering students from K. K. Wagh Institute of Engineering
Education & Research, Nashik visited both manufacturing plants of Powerinst Electromagnetics Pvt. Ltd. as
part of their academic curriculum.
The industrial visit provided students with an
opportunity to observe real-world manufacturing processes, electrical systems,
industrial practices, and workplace operations, helping them connect
theoretical concepts with practical applications.
The visits were coordinated by Prof. J. D. Patil and Prof. Rupali Ahire, whose efforts ensured
meaningful industry exposure for the students.
Such industrial interactions play an important role in
developing practical understanding, technical awareness, and industry readiness
among budding engineers.
A valuable learning experience for our TY Electrical
students!
T.Y. B.Tech. Students Win 3rd Prize in “Headlines Under Hammer 2.0”
We are delighted to share that our students Sakshi Gujarar, Aarya Dharkar, Mansi Avhad,
and Revati Borse from TY B.Tech, Division B secured the 3rd Prize (2nd
Runner-up) in the event “Headlines Under Hammer 2.0”, held on 28–29 September
2026 at P.C. Ray Hall. The team demonstrated excellent confidence, creativity,
teamwork, and presence of mind throughout the competition and was awarded a
cash prize of ₹500.Heartiest congratulations to our talented students!
Faculty Corner
Celebrating 30 Years of Dedication and Service!
On the occasion of Teachers’ Day, we had the privilege of
felicitating Mrs. Shubhada Borade in
recognition of her remarkable 30 years of dedicated service to the Electrical
Engineering Department.
Her three-decade-long journey is a wonderful example of
commitment, sincerity and dedication to the department and the institution. Her
contribution over the years has been an integral part of our department’s
journey and growth.
The felicitation was graciously done at the hands of Dr. Ramesh Bhat, in the presence of
Director Dr. Keshav Nandurkar, Dean
Academics Dr. Sunil Kute, and Dr. Shantam Shukla.
Heartiest congratulations and heartfelt gratitude to Mrs.
Borade for 30 years of committed service.
Celebrating Commitment, Dedication & Service on Teachers’ Day!
On the occasion of Teachers’ Day, it was a pleasure to
felicitate our dedicated faculty members for their valuable contributions and
years of committed service to the department.
Their journey reflects dedication, perseverance and a
strong commitment to teaching and nurturing our students. Their contribution
has been an integral part of the department’s growth and success.
Heartiest congratulations and sincere appreciation to all
four!
Faculty Achievement: Prof. Nayana Jangle Receives the Prestigious IET Member’s Choice Award!
Heartiest congratulations to Prof. Nayana Jangle, Chair, IET Nashik Local Network, on receiving
the prestigious IET Member’s Choice Award at the IET South Asia Volunteering
Festival, held in Bengaluru on 26th September 2026.
This recognition celebrates her dedication, commitment,
and valuable contribution to the IET volunteer community and her continued
efforts towards strengthening professional engagement and activities in the
region.
The award is indeed a proud moment for IET Nashik Local
Network, K K Wagh Institute of Engineering Education and Research and the
entire engineering fraternity associated with it.
Wishing Prof. Nayana Jangle many more milestones and
continued success in her journey with IET!
NSS Raksha Bandhan Celebration at Nashik Central Jail
On 28th August 2026, the National Service Scheme
(NSS) organized a Rakshabandhan celebration at Nashik Central Jail,
Nashik. The event highlighted the values of brotherhood, compassion,
respect, and social responsibility. The celebration provided an opportunity to
share the spirit of Rakshabandhan and promote a sense of humanity and emotional
connection.
Prof. Nayana Jangle participated in
the event, representing the spirit of community engagement and social service
promoted by NSS.The initiative reflected the importance of extending social
values beyond the campus and contributing to a more compassionate and inclusive
society.
Celebrating Research Excellence!
We are delighted to share the research achievement of Mr. Jitendra Patil from the Department
of Electrical Engineering, who has published a research article in the
International Journal of Ambient Energy (Taylor & Francis), an SCI-indexed
journal.
“Model
Predictive Control of D-STATCOM with Chopper-Based Voltage Balancing Technique
and Grey Wolf Optimization”
The achievement was felicitated on 5th September 2026 by
Director Dr. Keshav Nandurkar, in
the presence of Dr. Sunil Kute and Dr.
Ravindra Munje.
Celebrating Research Excellence on Engineers’ Day!
On the occasion of Engineers’ Day, 15th September 2026, Dr. Abhishek Srivastava was felicitated
for his achievement of publishing a research paper in an SCI-indexed journal.
He was felicitated at the hands of Shri Manish Kothari, President, IEI, in the gracious presence of
our Hon. Director, Dr. Keshav Nandurkar.
Such achievements reflect our continued commitment to
research, innovation and academic excellence at K K Wagh Institute of
Engineering Education & Research, Nashik.
Congratulations, Dr.
Abhishek Srivastava!
Celebrating Research Excellence on Engineers’ Day!
On the occasion of Engineers’ Day, 15th September 2026, Dr. Saravanan S was felicitated for his achievement of
publishing a research paper in an SCI-indexed journal.
He was felicitated at the hands of Shri Manish Kothari, President, IEI, in the gracious presence of
our Hon. Director, Dr. Keshav Nandurkar.
This achievement reflects our institute’s continued
commitment to fostering a culture of research, innovation and academic
excellence.
Heartiest congratulations to Dr. Saravanan S on this
accomplishment!
Alumni Interaction with
Lieutenant Tejas Rayate on Career Opportunities in the Indian Army!
On 16 September
2026, our department had the privilege of welcoming our distinguished alumnus Mr. Tejas Rayate, who recently
completed his training and was commissioned as a Lieutenant in the Indian Army.
During his interaction with our Third-Year students,
Tejas shared his journey, experiences, and the opportunities that led him
towards a career in the Armed Forces.
His journey reminded our students that an engineering
degree can open doors to many different career paths, including opportunities
beyond conventional engineering careers.
It was truly inspiring to see our alumnus return to his
department and share his experiences with the next generation of engineers. His
words encouraged our students to explore, dream, and pursue the career path
that truly inspires them.
We are proud of Tejas
and wish him a fulfilling and successful journey ahead in service to the
nation.
Alumni Interaction | Exploring Diverse Career Opportunities!
On
17 September 2026, our department had the pleasure of welcoming our
distinguished alumna Ms. Sukriti Singh,
who interacted with our Third-Year students.
During
the interaction, Sukriti shared her professional experience and provided
valuable insights into the role of engineers in Sales and Marketing. She
explained how engineering knowledge, combined with communication, customer
understanding, and business skills, can open up exciting career opportunities
beyond conventional technical roles.
She
also encouraged students to explore Sales and Marketing opportunities during
campus recruitment and consider them as a potential career pathway.
Interactions
like these help students understand the wide range of career possibilities
available to engineers and make informed choices about their professional
journey.
We
sincerely thank Ms. Sukriti Singh for taking the time to return to her
department and share her experience with the next generation of engineers.
Newspaper Cutting
Student Article
THE HIDDEN
LIFE OF A TRANSFORMERHow Can a Transformer Tell Us That It Is
Failing?
1. Introduction
Transformers are among the most
important components of electrical power systems. They transfer electrical
energy from one circuit to another through electromagnetic induction, enabling
voltage levels to be increased or decreased while maintaining the same
frequency.
Although transformers can operate
reliably for many years, their internal condition may gradually deteriorate due
to overheating, moisture, insulation ageing, overloading, short circuits, and
mechanical stress. If these warning signs remain undetected, they may
eventually lead to equipment failure, costly repairs, and interruptions in
electricity supply.
But can a transformer tell us when it
is becoming unhealthy? A transformer cannot speak, but it can communicate its
condition through measurable changes in temperature, dissolved gases,
vibration, moisture, sound, and electrical parameters. By monitoring these
changes, engineers can identify potential faults before they develop into
serious failures. This process is known as Transformer Condition Monitoring.
Fig. 1 shows the Simple block diagram of the smart
condition-monitoring system
2. Understanding the Problem
Transformers are among the most
important components of electrical power systems. They transfer electrical
energy from one circuit to another through electromagnetic induction, enabling
voltage levels to be increased or decreased while maintaining the same
frequency.
Although transformers can operate
reliably for many years, their internal condition may gradually deteriorate due
to overheating, moisture, insulation ageing, overloading, short circuits, and
mechanical stress. If these warning signs remain undetected, they may
eventually lead to equipment failure, costly repairs, and interruptions in
electricity supply.
But can a transformer tell us when it
is becoming unhealthy? A transformer cannot speak, but it can communicate its
condition through measurable changes in temperature, dissolved gases,
vibration, moisture, sound, and electrical parameters. By monitoring these
changes, engineers can identify potential faults before they develop into
serious failures. This process is known as Transformer Condition Monitoring.
Fig. 1 shows the Simple block diagram of the smart
condition-monitoring system
2. Understanding the Problem
Transformers operate under continuous
electrical, thermal, and mechanical stress. Excessive loading can increase
winding and oil temperatures, while inadequate cooling may accelerate
insulation deterioration. Moisture can weaken insulation, and internal
overheating or electrical discharges may produce gases in transformer oil. Fig.
2 shows Transformer Overheating / Insulation Failure.
If these conditions are not detected
in time, they can cause insulation failure, fire hazards, unexpected shutdowns,
and significant financial losses. Traditional maintenance practices often rely
on scheduled inspections or corrective action after a problem becomes
noticeable. However, faults can develop between inspections.
Therefore, a reliable monitoring
system should continuously observe important transformer parameters, identify
abnormal operating conditions, and provide early warnings to maintenance
personnel.
The key parameters that can be
monitored include:
·
Oil and winding temperature.
·
Dissolved gases in transformer oil.
·
Oil level and moisture content.
·
Vibration and abnormal sound.
·
Partial discharge and selected electrical parameters.
Continuous monitoring helps engineers
understand the transformer's condition and take appropriate preventive
measures.
Fig 1. Simple block diagram of the smart
condition-monitoring system
Fig 2. Transformer Overheating / Insulation
Failure
Transformers operate under continuous
electrical, thermal, and mechanical stress. Excessive loading can increase
winding and oil temperatures, while inadequate cooling may accelerate
insulation deterioration. Moisture can weaken insulation, and internal
overheating or electrical discharges may produce gases in transformer oil. Fig.
2 shows Transformer Overheating / Insulation Failure.
If these conditions are not detected
in time, they can cause insulation failure, fire hazards, unexpected shutdowns,
and significant financial losses. Traditional maintenance practices often rely
on scheduled inspections or corrective action after a problem becomes
noticeable. However, faults can develop between inspections.
Therefore, a reliable monitoring
system should continuously observe important transformer parameters, identify
abnormal operating conditions, and provide early warnings to maintenance
personnel.
The key parameters that can be
monitored include:
·
Oil and winding temperature.
·
Dissolved gases in transformer oil.
·
Oil level and moisture content.
·
Vibration and abnormal sound.
·
Partial discharge and selected electrical parameters.
Continuous monitoring helps engineers
understand the transformer's condition and take appropriate preventive
measures.
Fig 1. Simple block diagram of the smart condition-monitoring system
Fig 2. Transformer Overheating / Insulation
Failure
A smart transformer
condition-monitoring system uses sensors, data acquisition, monitoring
software, communication technologies, and alarm mechanisms to assess
transformer health.
Sensors installed at suitable
locations collect information about the transformer's operating condition. A
data-acquisition unit processes these measurements and sends them to a
controller or monitoring system. The system compares the readings with
predefined limits and historical data to identify unusual patterns.
When an abnormal condition is
detected, an alarm can be generated locally or communicated remotely to
maintenance personnel.
Major components of the system
include:
·
Sensors: Measure temperature, oil level, moisture, gas concentration,
vibration, and other selected parameters.
·
Data-Acquisition Unit: Converts sensor signals into digital data for
analysis.
·
Controller and Monitoring Software: Evaluates measurements, checks
operating limits, and identifies abnormal trends.
·
Communication System: Transfers information through suitable
technologies such as GSM, Wi-Fi, LoRa, or industrial communication networks.
·
Alarm and Monitoring Dashboard: Displays transformer status and alerts
engineers when attention is required.
Condition monitoring supplements,
rather than replaces, essential protection devices such as Buchholz relays,
pressure-relief devices, overcurrent relays, and differential protection
systems.
4. How Does the Monitoring System Work?
A smart transformer
condition-monitoring system uses sensors, data acquisition, monitoring
software, communication technologies, and alarm mechanisms to assess
transformer health.
Sensors installed at suitable
locations collect information about the transformer's operating condition. A
data-acquisition unit processes these measurements and sends them to a
controller or monitoring system. The system compares the readings with
predefined limits and historical data to identify unusual patterns.
When an abnormal condition is
detected, an alarm can be generated locally or communicated remotely to
maintenance personnel.
Major components of the system
include:
·
Sensors: Measure temperature, oil level, moisture, gas concentration,
vibration, and other selected parameters.
·
Data-Acquisition Unit: Converts sensor signals into digital data for
analysis.
·
Controller and Monitoring Software: Evaluates measurements, checks
operating limits, and identifies abnormal trends.
·
Communication System: Transfers information through suitable
technologies such as GSM, Wi-Fi, LoRa, or industrial communication networks.
·
Alarm and Monitoring Dashboard: Displays transformer status and alerts
engineers when attention is required.
Condition monitoring supplements,
rather than replaces, essential protection devices such as Buchholz relays,
pressure-relief devices, overcurrent relays, and differential protection
systems.
4. How Does the Monitoring System Work?
The working principle is based on the
fact that developing faults often produce measurable changes in transformer
behavior. Fig. 3 shows the Transformer Monitoring Flowchart.
The working principle is based on the
fact that developing faults often produce measurable changes in transformer
behavior. Fig. 3 shows the Transformer Monitoring Flowchart.
Fig 3. Transformer Monitoring Flowchart
For example, excessive loading may
increase temperature, deteriorating insulation may produce abnormal gases, and
mechanical problems may cause changes in vibration or sound.
The monitoring system identifies these
changes through the following steps:
·
Step 1 – Sensing: Sensors measure selected parameters such as
temperature, oil level, moisture, gas concentration, and vibration.
·
Step 2 – Data Collection: The sensor signals are collected and processed
by a data-acquisition unit.
·
Step 3 – Condition Assessment: The measured values are compared with
operating limits, alarm settings, and historical trends.
·
Step 4 – Fault Indication: The system identifies abnormal readings or
trends, such as continuously rising temperature.
·
Step 5 – Alert Generation: A warning may be displayed on a control panel
or communicated through an alarm, SMS, email, or control-room notification.
·
Step 6 – Engineering Verification: Qualified personnel investigate the
warning and perform appropriate diagnostic tests before deciding on maintenance
or shutdown.
For example, excessive loading may
increase temperature, deteriorating insulation may produce abnormal gases, and
mechanical problems may cause changes in vibration or sound.
The monitoring system identifies these
changes through the following steps:
·
Step 1 – Sensing: Sensors measure selected parameters such as
temperature, oil level, moisture, gas concentration, and vibration.
·
Step 2 – Data Collection: The sensor signals are collected and processed
by a data-acquisition unit.
·
Step 3 – Condition Assessment: The measured values are compared with
operating limits, alarm settings, and historical trends.
·
Step 4 – Fault Indication: The system identifies abnormal readings or
trends, such as continuously rising temperature.
·
Step 5 – Alert Generation: A warning may be displayed on a control panel
or communicated through an alarm, SMS, email, or control-room notification.
·
Step 6 – Engineering Verification: Qualified personnel investigate the
warning and perform appropriate diagnostic tests before deciding on maintenance
or shutdown.
Temperature Monitoring: High temperatures may indicate overloading, inadequate cooling, blocked
radiators, or internal problems.
Dissolved Gas Analysis (DGA): In oil-filled transformers, gases such as hydrogen,
methane, ethylene, and acetylene can provide valuable clues about overheating
and electrical discharges. Proper sampling and expert interpretation are
essential.
Buchholz Relay Monitoring: In suitable conservator-type transformers, gas
accumulation or sudden oil movement can activate alarm or trip contacts,
helping identify certain internal faults.
Partial Discharge Monitoring: Specialized sensors and instruments can detect small
electrical discharges within insulation, helping engineers assess insulation
health.
By combining these techniques,
engineers can obtain a clearer picture of transformer condition and identify
potential problems at an early stage.
Temperature Monitoring: High temperatures may indicate overloading, inadequate cooling, blocked
radiators, or internal problems.
Dissolved Gas Analysis (DGA): In oil-filled transformers, gases such as hydrogen,
methane, ethylene, and acetylene can provide valuable clues about overheating
and electrical discharges. Proper sampling and expert interpretation are
essential.
Buchholz Relay Monitoring: In suitable conservator-type transformers, gas
accumulation or sudden oil movement can activate alarm or trip contacts,
helping identify certain internal faults.
Partial Discharge Monitoring: Specialized sensors and instruments can detect small
electrical discharges within insulation, helping engineers assess insulation
health.
By combining these techniques,
engineers can obtain a clearer picture of transformer condition and identify
potential problems at an early stage.
Fig
4. Smart Transformer Condition Monitoring System in a Power Substation
5. Applications and Benefits
Transformer condition monitoring is
useful wherever a reliable electricity supply is essential and unexpected
equipment failure can have serious consequences. Fig. 4 shows the Smart
Transformer Condition Monitoring System in a Power Substation.
Major applications include:
·Power Generation Stations: Monitoring generator step-up transformers to
reduce the risk of unexpected outages.
.Transmission Substations: Assessing insulation condition, thermal
stress, and potential internal faults.
·Distribution Networks: Identifying overloaded transformers and abnormal
operating conditions.
·Industrial Plants: Supporting continuous production by detecting
transformer problems before major shutdowns occur.
·Renewable Energy Plants: Monitoring transformers used in solar and wind
power installations.
·Railway and Traction Systems: Improving the reliability of transformers
supplying traction power.
·Smart Grids: Enabling remote monitoring and condition-based maintenance
through connected sensors and communication systems.
Transformer condition monitoring is
useful wherever a reliable electricity supply is essential and unexpected
equipment failure can have serious consequences. Fig. 4 shows the Smart
Transformer Condition Monitoring System in a Power Substation.
Major applications include:
·Power Generation Stations: Monitoring generator step-up transformers to
reduce the risk of unexpected outages.
.Transmission Substations: Assessing insulation condition, thermal
stress, and potential internal faults.
·Distribution Networks: Identifying overloaded transformers and abnormal
operating conditions.
·Industrial Plants: Supporting continuous production by detecting
transformer problems before major shutdowns occur.
·Renewable Energy Plants: Monitoring transformers used in solar and wind
power installations.
·Railway and Traction Systems: Improving the reliability of transformers
supplying traction power.
·Smart Grids: Enabling remote monitoring and condition-based maintenance
through connected sensors and communication systems.
Key Benefits
6.
Future Scope: Towards Intelligent Transformer Monitoring
7.
Conclusion
·
Early identification of abnormal operating conditions.
·
Reduced risk of unexpected equipment failure.
·
Improved maintenance planning and equipment availability.
·
Enhanced operational safety.
·
Better understanding of transformer ageing and repeated overloading.
·
More efficient use of maintenance resources.
·
Early identification of abnormal operating conditions.
·
Reduced risk of unexpected equipment failure.
·
Improved maintenance planning and equipment availability.
·
Enhanced operational safety.
·
Better understanding of transformer ageing and repeated overloading.
·
More efficient use of maintenance resources.
Advances in digital technology are
transforming conventional maintenance practices into intelligent, data-driven
systems. In the future, transformer monitoring is expected to become more
connected, predictive, and efficient.
·
Internet of Things (IoT): Connected sensors can continuously transmit
transformer data to remote dashboards, allowing engineers to monitor equipment
from control rooms.
·
Artificial Intelligence and Machine Learning:
Intelligent
algorithms can analyze operating data, learn normal behavior, and identify
unusual patterns that may indicate developing faults. Their effectiveness
depends on reliable data and proper engineering validation.
·
Digital Twins: Digital models of transformers can combine
design information, operating measurements, and ageing estimates to support
maintenance decisions.
·
Edge Computing: Local data processing can identify urgent
abnormalities even when communication networks are unavailable.
·
Wireless Monitoring: Wireless communication technologies can
simplify data transmission in locations where installing cables is difficult.
·
Sustainable Maintenance: Better information about transformer health
can help extend equipment service life, reduce unnecessary replacements, and
improve the use of maintenance resources.
However, challenges such as sensor
reliability, calibration, electrical isolation, electromagnetic interference,
cybersecurity, false alarms, and installation costs must be addressed to ensure
safe and dependable operation.
Advances in digital technology are
transforming conventional maintenance practices into intelligent, data-driven
systems. In the future, transformer monitoring is expected to become more
connected, predictive, and efficient.
·
Internet of Things (IoT): Connected sensors can continuously transmit
transformer data to remote dashboards, allowing engineers to monitor equipment
from control rooms.
·
Artificial Intelligence and Machine Learning:
Intelligent
algorithms can analyze operating data, learn normal behavior, and identify
unusual patterns that may indicate developing faults. Their effectiveness
depends on reliable data and proper engineering validation.
·
Digital Twins: Digital models of transformers can combine
design information, operating measurements, and ageing estimates to support
maintenance decisions.
·
Edge Computing: Local data processing can identify urgent
abnormalities even when communication networks are unavailable.
·
Wireless Monitoring: Wireless communication technologies can
simplify data transmission in locations where installing cables is difficult.
·
Sustainable Maintenance: Better information about transformer health
can help extend equipment service life, reduce unnecessary replacements, and
improve the use of maintenance resources.
However, challenges such as sensor
reliability, calibration, electrical isolation, electromagnetic interference,
cybersecurity, false alarms, and installation costs must be addressed to ensure
safe and dependable operation.
A transformer cannot communicate
through words, but it provides valuable warning signs through changes in
temperature, dissolved gases, moisture, vibration, sound, and electrical
behavior. These measurable changes form the hidden language of a transformer.
Smart condition-monitoring systems
help engineers interpret this information, detect abnormal operating
conditions, and plan maintenance before minor problems develop into major
failures. When combined with conventional protection systems and appropriate
diagnostic testing, condition monitoring can improve reliability, safety, and
equipment life.
For electrical engineering students,
transformer condition monitoring demonstrates how fundamental concepts in
electrical machines, measurements, instrumentation, control systems, and
communication technologies are applied in real-world power systems.
As IoT, artificial intelligence, and
predictive maintenance continue to advance, transformers are becoming smarter
and easier to monitor. However, sound engineering judgement, reliable
protection, and proper testing will remain essential.
KEY TAKEAWAY: A transformer may not speak, but its temperature, gases,
vibration, sound, and electrical behavior reveal important clues about its
health. Learning to interpret these signals can help engineers identify faults
early and maintain a reliable electricity supply.
A transformer cannot communicate
through words, but it provides valuable warning signs through changes in
temperature, dissolved gases, moisture, vibration, sound, and electrical
behavior. These measurable changes form the hidden language of a transformer.
Smart condition-monitoring systems
help engineers interpret this information, detect abnormal operating
conditions, and plan maintenance before minor problems develop into major
failures. When combined with conventional protection systems and appropriate
diagnostic testing, condition monitoring can improve reliability, safety, and
equipment life.
For electrical engineering students,
transformer condition monitoring demonstrates how fundamental concepts in
electrical machines, measurements, instrumentation, control systems, and
communication technologies are applied in real-world power systems.
As IoT, artificial intelligence, and predictive maintenance continue to advance, transformers are becoming smarter and easier to monitor. However, sound engineering judgement, reliable protection, and proper testing will remain essential.
KEY TAKEAWAY: A transformer may not speak, but its temperature, gases, vibration, sound, and electrical behavior reveal important clues about its health. Learning to interpret these signals can help engineers identify faults early and maintain a reliable electricity supply.
