Dr. Chilaka  Ranga

Department Electrical Engineering
Designation Assistant Professor (Grade-I)
Educational Qualification Ph.D.
E-Mail cranga.ee@nitrr.ac.in
Contact Number 09882444187
Areas of Interest
  • Application of Artificial Intelligence in  Performance Evaluation of Power Transformers
  • Condition Monitoring of Electrical Apparatus
  • Advancements in Dielectrics for Power and Distribution Transformers
  • Fault Diagnosis of Transformers and Rotating Machines
  • Impacts of Cold Climates on Performance of Electrical Apparatus
Publications

Publications

International Journals

  • C. Ranga, T. Manoj, S. S. M. Ghoneim, Abu Siada, “Analytic Hierarchy Processed Grey Relational Fuzzy Approach for Hea lth Assessment of Power Transformers,” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 31, No. 3, pp. 1480-1489, March 2024 10.1109/TDEI.2024.3382076  (SCI).
  • C. Ranga, T. Manoj, S. S. M. Ghoneim, U. Mohan Rao and S. A. M. Abdelwahab, “Alternate and Effective Dissolved Gas Interpretation to Understand the Transformer Incipient Faults,” in IEEE Transactions on Dielectrics and Electrical Insulation (SCI), vol. 30, no. 3, June 2023, pp. 1231-1239. doi: 10.1109/TDEI.2023.3237795 (SCI).
  • Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Condition assessment of power transformers based on multi-attributes using fuzzy logic,” IET Science Measurements and Technology, IET, vol. 11, no.4, pp. pp. 983-990, July 2017. (SCI)
  • Chilaka Ranga and Manoj Teruvai, “Multi-criterion fuzzy model for power transformer insulation monitoring,” Electrical Engineering, Taylor and Francis, vol. 104, pp. 3535–3546, 2022.(SCI)
  • Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Performance analysis of alternative solid dielectrics of transformers with a blend of mineral and silicon oils,” IETE Technical Review, vol. 35, issue 4, pp. 331-341, Taylor & Francis,Mar 2017. (SCI)
  • Chilaka Ranga, Gopi Mulpuru, “Multi-Criterion Analysis based Artificial Intelligence System for Condition Monitoring of Electrical Transformers,” Insight - Non-Destructive Testing and Condition Monitoring, accepted for publication, March 2024. (SCI)
  • T. Manoj, C. Ranga, "An intelligence expert system for quality health monitoring of power transformers using testing attributes," in Engineering Research Express, vol. 5, 2023 (SCI), doi: 10.1088/2631-8695/acd2a8.
  • Chilaka Ranga, Nasir Wani, “A Review of Health Index Based Condition Assessment Techniques for Power and Distribution Transformers,” Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), accepted for publication, Sep. 2023. (SCI)
  • Chilaka Ranga and Manoj Teruvai, “Oil health index calculation and incipient fault diagnosis in power transformers using fuzzy logic,” Insight - Non-Destructive Testing and Condition Monitoring, vol. 64, no. 1, pp 28-37, Jan. 2022. (SCI)
  • Chilaka Ranga, Manoj Teruvai, "Multi-parameter Based Fuzzy Logic Diagnostic System for Health Assessment of Power Transformer", Australian Journal of Electrical and Electronics Engineering (AJEEE), Taylor & Francis, Accepted for publication on 15-05-2024 (SCI).
  • Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Influence of Electrical and Thermal Ageing on the Mineral Insulating Oil Performance for Power Transformer Applications,” Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), vol. 62, no. 4, pp 1-8, April 2020. (SCI)
  • Chilaka Rangaand Ashwani Kumar, “Influence of Accelerated Thermal Aging on Performance of Alternative Solid Dielectrics for Power Transformers,”  Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), Accepted for publication, 2019. (SCI)
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Expert system for condition monitoring of power transformers using fuzzy logic,” Journal of Renewable and Sustainable Energy, AIP Publishing, vol. 9, no. 4, pp. 1-16, July 2017. (SCI)
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Performance analysis of cellulose and Nomex impreganted oil filled power transformers," International Journal of Electrical Engineering and Informatics, IJEEI, vol. 9, no. 2, pp. 394-406, July 2017. (SCOPUS) 
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Fuzzy logic expert system for optimum maintenance of power transformers,” International Journal of Electrical Engineering and Informatics, IJEEI, vol. 8, no. 4, pp. 836-850, September 2016 (SCOPUS)
  • Chilaka Ranga, Ashwani Kumar and N. Sudheer Reddy, “Life estimation of thermally insulating papers of rotating machines by Arrhenius Model,” Materials Toady Proceedings, vol. 9, no. 4, pp. 10643-10647, 2017. (SCOPUS)
  • Chilaka Ranga and Ashwani Kumar, “Expert system for health index assessment of power transformers,” International Journal of Electrical Engineering and Informatics, IJEEI, vol. 9, no. 4, pp. 836-850, December  2017. (SCOPUS)
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Experimental effectiveness estimation of inhibitors on oxidation degradation of oil impregnated paper insulation in power transformers,” i-Managers Journal of Power System, vol. 4, no. 1, pp. 1-8, January 2017. 
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Effect of ambient conditions on performance of  power transformers,” i-Managers Journal of Electrical Engineering, vol. 10, no. 2, pp. 1-8, December 2016. 
  • Chilaka Ranga, Ashwani Kumar and R. Chandel, “Multi-Attributes based health assessment of power transformers,” i-Managers Journal of Power System, vol. 4, no. 3, pp. 28-38, October 2016. 

 

International Conferences

  • Chilaka Ranga, Manu Kumari and Ashwani Kumar, “Validating Health Status of transformer: Grey Relational Analysis and Fuzzy Logic”, ICECCT- 2023.
  • Chilaka Ranga, “Thermal performance evaluation of power transformer insulation using UV-visible spectroscopy”, 1stInternational Conference on Emerging Technologies in Engineering and Science (ICETES), DVR & Dr. Hs MIC CT, Kanchikacherla, July 2023.
  • Nasir Wani, Chilaka Ranga, Manoj Teruvai, Gopi Mulpuru, “Effects of cold climates on dielectric behavior of oil immersed power transformers: Challenges and Remedies”, International Conference on Emerging Trends in Engineering and Technology (ICETET), NREC, Hyderabad, 9-10 June, 2023.
  • Chilaka Ranga and Manoj Teruvai, “Performance Evaluation of Thermally Stressed Solid Dielectrics for Transformers,” IEEE Power India International Conference (PIICON-2020), IEEE, Haryana, India, Dec. 2020.
  • Chilaka Ranga and Ashwani Kumar, “Remnant life assessment of TUK and nomex-910 impregnated transformers using Raman spectroscopy,” 3rd International IEEE Conference on Condition Assessment Techniques in Electrical Systems (CATCON-17), IEEE, IIT Ropar, July, 2017.
  • Chilaka Ranga, Anjali Kumari and Ashwani Kumar, “A novel fuzzy logic model for accurate health assessment of power transformers,” IEEE International Conference on Computing and sustainable Global Development (INDIACom-17), IEEE, Bharthi Vidhyapeet, Delhi, India, pp. 1-5, 01-03 March 2017.
  • Manoj Kumar, Chilaka Ranga and Ashwani Kumar, “Thermal evaluation and oxidation stability of high temperature alternative solid dielectrics of power transformers in mixed oil,” International Conference on Advancements in Energy, Drive and Control (ICAEDC-17), Springer, Delhi-India, pp. 1-5, 7-8 March 2017.
  • Ashish Mishra, Chilaka Ranga and Ashwani Kumar, “Furfural analysis of TUK and nomex-910 insulated power transformers using Raman spectroscopy,” International Conference on Advancements in Energy, Drive and Control (ICAEDC-17), Springer, Delhi-India, pp. 1-6, 7-8 March 2017.
  • Chilaka Ranga and Ashwani Kumar, “A multi-regression analysis for health assessment of power transformers in consideration of ambient conditions,” 14th DobleIndia Power Forum, Doble Engineering, Vadodara, India, pp. 1-7, November 29 – December 2, 2016.
  • Chilaka Ranga and Ashwani Kumar, “Effect of accelerated thermal aging on dielectric strength of electrical insulating papers,” 14th DobleIndia Power Forum, Doble Engineering, Vadodara, India, pp. 1-5, November 29 – December 2, 2016.
  • Chilaka Ranga and Ashwani Kumar, “Oxidation stability of TUK and Nomex insulated power transformers,” International IEEE India Conference (INDICON-16), IEEE, IISC Bangalore, India, pp. 1-5, 16-18 December, 2016.       
  • Chilaka Ranga and Ashwani Kumar, “Multi-criterion approach for dissolved gas analysis of transformer oil,” IEEE Uttar Pradesh Section Conference on Electrical and Electronics Engineering, IEEE, IIIT Allahabad, India, pp. 1-6, 4-6 December 2015. 
  • Chilaka Ranga and Ashwani Kumar, “Advanced tool based condition monitoring of induction machines by using LabVIEW–A Review,” IEEE Uttar Pradesh Section Conference on Electrical and Electronics Engineering (UPCON-2016), IEEE, IIIT Allahabad, India, pp. 1-5, 4-6 December 2015.

 

Books/Chapters

  • Manoj Teruvai and Chilaka Ranga, ‘Fuzzy Logic Expert System for Diagnosis of Power Transformer’, Fuzzy Systems - Theory and Applications, Wiley, Scrivener Publishing, June, 2021, DOI: 10.5772/intechopen.98663, ISBN: 978-1-83962-292-2.
  • Manoj Teruvai and Chilaka Ranga, ‘Calculation of Health Index for Power Transformer Solid Insulation using Fuzzy Logic’, Lecture Notes in Electrical Engineering, vol. 768, Springer, 2020, 10.1007/978-981-16-2354-7_52, ISBN978-981-16-2354-7.
  • Chilaka Ranga, Manoj Kumar, Ashwani Kumar and Ashish Mishra, Thermal evaluation and oxidation stability of high temperature alternative solid dielectrics of power transformers in mixed oil, Chapter in Advances in Energy and Power Systems, Springer, 2018, ISBN: 9789811306617
  • Teruvai Manoj, Chilaka Ranga, Mulpuru Gopi and Nasir Ul Islam Wani, “A Fuzzy Based Fault Diagnostic Model for Oil-Immersed Load Tap Changers” In: Machine Learning, Advances in Computing, Renewable Energy and Communication. Lecture Notes in Electrical Engineering- Accepted for presentation at MARC-2023.
  • Nasir Ul Islam Wani, Chilaka Ranga, Teruvai Manoj and Mulpuru Gopi, “Dielectric Behaviour Power Transformers Installed in Extreme Cold Climates: Case Studies and Challenges” In: Machine Learning, Advances in Computing, Renewable Energy and Communication. Lecture Notes in Electrical Engineering Accepted for presentation at MARC-2023.
  • Mulpuru Gopi, Chilaka Ranga, Teruvai Manoj and Nasir Ul Islam Wani, “An Effective Health Assessment of Transformers using Multi-criterion based Triangular Fuzzy Logic” In: Machine Learning, Advances in Computing, Renewable Energy and Communication. Lecture Notes in Electrical Engineering Accepted for presentation at MARC-2023.

 

 Research Projects

  • ‘Performance Evaluation of Advanced Dielectric Materials in Transformers’, Department of Scientific and Industrial Research (DSIR) sponsored, Rs. 9.964 lakh (Feb. 2022 – Jan. 2024).
  •  ‘Performance Evaluation and Health Assessment of Transformers’ funded by TEQIP-II, NIT Hamirpur, Rs. 152000/- (March 2015 to April 2016).
  • ‘Experimental Characterization of Alternate Dielectrics for Power Transformers’, Seed Grant NIT Raipur, 4.35 lakhs (Aug. 2024 to July 2027).

 

Patents:

  • An Electro-thermal Combined Stress Aging Test Cell and its Application Therof, Granted in April 2024, Indian Patent Office.
  • A Recommendation System and Method for E-Commerce using Machine Learning, Granted in Oct. 2021, Australian Patent Office.
  • An Ecofriendly method to improve the life cycle of a transformer by using an inhibitor composition, Granted in June 2024, Indian Patent Office.
  • An AI based Duval  triangle fault diagnostic method for oil-immersed power transformers and its application thereof, published in Feb. 2024, Indian Patent Office.

 

Ph.D. Guided

  • Manoj Teruvai, ‘Health Assessment and Fault Diagnosis of Power Transformer’ Defended in June 2024. (Completed)
  • Nasir Ul Wani, 'Impact of extreme cold weather on performance of power transformers in Kashmir valley,' Thesis submitted. 
  • M. Gopi, 'Application of artificial neural neworks in condition monitoing of power transformers,' on-going. 
  • Varsha Thakur, ‘Performance Evaluation of Advanced Dielectrics for Power and Distribution Transformers’, on-going.
  • Mr. Avinash kumar, ‘Fault Diagnosis of power transformers’, January 2025 to till date, (On-going).
  • Ghaseedas kurrey, ‘Performance analysis of rotating machines’, January 2025 to till date, (On-going).
  • Roshan Lal Sharma, ‘Fault Diagnosis of Power Transformers using Artificial Intelligence’, on-going (part-time).
  • Raginee Sharma, 'Economic Dispatch of Hybrid Electrical System', on-going (joint-supervision).
  • Pramod, 'DC-DC High gain Conventers', on-going (joint-supervision).

 

PG Projects:

  • Arbaz Ashraf, ‘Health Index Assessment of a Transformer Using Artificial Neural Network’, June 2024.

  • Faizan Altaf, ‘Health Assessment of a Power Transformer Based on Multi Attributes Diagnosis’, June 2024. 

  • Haseeba Maqbul, ‘Optimal planning of multiple RES integrated RS with Uncertainties using Genetic Algorithm’, June 2023. 

  • Suhail Ahmad Qazi, ‘Analysis of battery Charging Method for EV Application with Fast Charge Equalization’, July 2022.

  • Abdul Basit Malla, ‘Analysis of battery Charging Method for EV Application with Fast Charge Equalization’, July 2022.

 

UG Projects Guided:

·         Design analysis and power management simulation in solar power drone’

             Musaib Ahanger (2019BELE021)

             Pankaj Saini (2019BELE039)

             Kapil Modi (2019BELE057)

·          ‘Control over electric appliances in crop field using Mobile Application’

             Sourabh Gupta (2019BELE048)

             Himanshu Verma (2019BELE024)

             Om Praksh (2019BELE090)

 ·         ‘Health Index Prediction for Power Transformers using Artificial Neural Network’

Sandeep Ravada (2018BELE052)

Piyush Kumar Vasandani (2018BELE085)

Vijay Chandra Gugulothu (2018BELE086)

 ·         ‘Fault Diagnosis of Power Transfomrer by using Pentagon Method’

Rajneesh Kumar Yadav (2018BELE068)

Anoop Saroj (2018BELE051)

Hemant Kumar (2018BELE070)

 ·         ‘Condition Assessment of Power Transformer Based on Multi Attributes Using Fuzzy Logic’

Anil Kumar Meena (ELE-037/17)

Safir Ahmed (ELE-026/17)

Aditya Sadhotra (ELE-017/17)

 

·         ‘Condition Monitoring of Power Transformer using Fuzzy Logic’

Kolan Sai Ganesh (ELECT-309/16)

Bodula Ratna Sagar (ELECT-189/16)

Rahul Meena (ELECT-337/16)

Irshad Ahmad Teeli (ELECT-152/16)

·         ‘Expert system for Condition Monitoring of Power Transformer using Fuzzy Logic’

Sandeep Kumar (ELECT-80/15)

Sunil Kumar (ELECT-24/15)

Aditya Ujjawal (ELECT-57/15)

Akash Mohan (ELECT-58/15)

 

 Internships Guided 

·    Yachi, ‘Prediction of partial discharge inception voltage of electric vehicle motor insulation using deep learning,’ May-June, 2025.

 

International/National Conferences Organized

  • Organising Secretary for ‘Second International Conference on Emerging Technologies & Applications in Electrical Engineering (ETAEE-2024)’ organized by EED, NIT Raipur, 18th -19th December 2024.
  • Organising Secretary for ‘Machine Intelligence for Research & Innovations (MAiTRI-2024)’, organized by NIT Srinagar, 20-21 June, 2024.
  • Organising Secretary for an ‘International Conference on Emerging Trends in Engineering Innovations and Technology Management’ Organized by EED, NIT Hamirpur (December 16-18, 2017).

 

Workshops/ Short Term Courses Conducted

  • Five days workshop on ‘Network and System Administrators’, organized by IET on-campus NIT Srinagar in collaboration with Recimotech Solutions, Srinagar, 21-25 Aug., 2023.
  • Seven days master workshop on ‘Python-Pioneers’, organized by IET on-campus NIT Srinagar in collaboration with Recimotech Solutions, Srinagar, 28 Sep. to 03 Oct., 2023.
  • Seven days master workshop on ‘Web Development’, organized by IET on-campus NIT Srinagar in collaboration with CETPA, Noida, Recimotech Solutions, Srinagar, 15-21 May, 2023.
  • TEQIP-III sponsored Five Days Online Short Term Course on 'Emerging Techniques in Condition Monitoring of Electrical Apparatus' 07th-11th, Sep. 2020 (Convener).
  • TEQIP-III sponsored Five Days Online Workshop on 'Application of MATLAB in Engineering' organized IET On Campus NIT Srinagar, 26th-30th, Nov. 2020 (Convener).
  • One day workshop on ‘Introduction to Git and GitHub’, organized by IET on-campus NIT Srinagar in collaboration with Recimotech Solutions, Srinagar, June, 2023.
  • ‘Capture The Tech’, organized IET On Campus NIT Srinagar, 8th October, 2022.
  • ‘CV/Resume Building Workshop’, organized IET On Campus NIT Srinagar and Department of Training and Placements, NIT Srinagar, Aug. 14, 2021 (Coordinator).
  • ‘Just A Minute –The Extempore’, organized IET On Campus NIT Srinagar, 10th April 2021 (Coordinator).
  • Webinar on 'IET and it's Importance to Engineering Students', jointly organized by IET On Campus NIT Srinagar Student Chapter and IET Delhi Local Network, 22nd October, 2020 (Convener).
  • IET sponsored one day expert lecture on ‘Health Management of Oil-filled Transformers: Why and How?’ by Prof. Sivaji Chakravorti (Vice President INAE, President WBAST, Former Director NIT Calicut, Former Chairman IEEE India Council). 

Institute Level Activities 

·         Faculty Coordinator / Facilitator for IET On Campus NIT Srinagar Student Chapter, from 27-May-2019 to 4-03-2024.

·         Coordinator, Socio-cultural Committee, NIT Srinagar

·         Coordinator, Students Club –Bureau of Indian Standards (BIS), NIT Srinagar

·         GeM (Government e-Marketplace) Coordinator, NIT Srinagar, 13-Feb-2020 to 4-03-2024.

·         Warden Chenab Hostel, NIT Srinagar, Oct 2018 to Oct 2020.

·         Coordinator Remedial Classes, NIT Srinagar

·         Member in SLA Training Program sponsored by TEQIP-II, NIT Srinagar

·         Member, NIRF Ranking Committee – 2020, 2021, NIT Srinagar

·         Member, India Today Ranking Committee, 2020, 2021, NIT Srinagar

·         Evaluation Committee member of an Innovation ‘Design and Development of Frugal LIVE LINE DETECTOR’, NIT Srinagar

 

Department Level Activities

  • Coordinator, NBA work, NIT Raipur
  • Coordinator, Electrical Engineering Association, NIT Raipur
  • First Year Coordinator, Electrical Engineering Department, NIT Raipur 
  • Coordinator, 8th Semester, Electrical Engineering, NIT Srinagar
  • Dy. O/C High Voltage lab, NIT Srinagar
  • NBA Accreditation Work (Criteria-5), NIT Srinagar
  • AMI Course Evaluator, NIT Srinagar
  • Departmental Admission Committee (DAC) Member, NIT Srinagar
  • Member DCC, NIT Srinagar
  • Member Write-off Committee, NIT Srinagar
  • Member, Bid Evaluation Committee for various labs, NIT Srinagar
  • Member, Ph.D. (sponsored) candidates screening committee, NIT Srinagar
  • Annual Report Compilation,2019-20, 2020-21., NIT Srinagar
  • Member, Physical verification of fixed assets, NIT Srinagar
  • Industrial Visit to Marwa Thermal Power Plant, Chattisgargh

International Journals:  

1.      T. Manoj, C. Ranga, S. S. M. Ghoneim, Abu Siada, “Analytic Hierarchy Processed Grey Relational Fuzzy Approach for Health Assessment of Power Transformers,” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 31, No. 3, pp. 1480-1487, March 2024. doi: 10.1109/TDEI.2024.3382076, (SCI-Q1).

 

 

2.      C. Ranga, T. Manoj, S. S. M. Ghoneim, U. Mohan Rao and S. A. M. Abdelwahab, “Alternate and Effective Dissolved Gas Interpretation to Understand the Transformer Incipient Faults,” IEEE Transactions on Dielectrics and Electrical Insulation, vol. 30, no. 3, June 2023, pp. 1231-1239. doi: 10.1109/TDEI.2023.3237795, (SCI-Q1).

 

3.      C. Ranga, T. Manoj, S. V. Kulkarni, “A manuscript titled A Hybrid Multi-Criteria Decision-Making based Fuzzy System for Comprehensive Health Assessment of Power Transformers,” Accepted for Publication in IEEE Transactions on Power Delivery, June. 2025. (SCI-Q1).

 

4.      Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Condition assessment of power transformers based on multi-attributes using fuzzy logic,” IET Science Measurements and Technology, IET, vol. 11, no.4, pp. 983-990, July 2017, doi: 10.1049/iet-smt.2016.0497, (SCI-Q1).

 

5.      Chilaka Ranga, Nasir Wani, “A Review of Health Index Based Condition Assessment Techniques for Power and Distribution Transformers,” Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), Vol. 65, No. 11, pp. 1-8, Nov. 2023. doi: 10.1784/insi.2023.65.11.625, (SCI-Q1).

 

6.      Chilaka Ranga, Nasir Wani, Neeraj Gupta “Adaptive Fuzzy Logic Expert system for Predictive maintenance of Transformers installed in Cold Climatic Conditions,” Accepted for publication in Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), June 2025.

 

7.      Chilaka Ranga and Manoj Teruvai, “Oil health index calculation and incipient fault diagnosis in power transformers using fuzzy logic,” Insight - Non-Destructive Testing and Condition Monitoring, vol. 64, no. 1, pp 28-37, Jan. 2022. doi: 10.1784/insi.2022.64.1.28, (SCI-Q1).

 

8.      Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Influence of Electrical and Thermal Ageing on the Mineral Insulating Oil Performance for Power Transformer Applications,” Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), vol., no. 4, pp 1-8, April 2020. doi: 10.1784/insi.2020.62.4.22262, (SCI-Q1).

 

9.      Chilaka Ranga and Ashwani Kumar, “Influence of Accelerated Thermal Aging on Performance of Alternative Solid Dielectrics for Power Transformers,” Insight - Non-Destructive Testing and Condition Monitoring (The Journal of The British Institute of Non-Destructive Testing), Vol. 61, No. 1, pp. 1-9, Jan. 2019. doi: 10.1784/insi.2019.61.1.20, (SCI-Q1).

 

 

10.  Chilaka Ranga, Gopi Mulpuru, “Multi-Criterion Analysis based Artificial Intelligence System for Condition Monitoring of Electrical Transformers,” Insight - Non-Destructive Testing and Condition Monitoring, Vol. 66, No. 6, pp. 1-9, June 2024. doi:org/10.1784/insi.2024.66.6.368, (SCI-Q1).

 

 

11.  Chilaka Ranga, Ashwani Kumar and Rajeevan Chandel, “Performance analysis of alternative solid dielectrics of transformers with a blend of mineral and silicon oils,” IETE Technical Review, vol. 35, issue 4, pp. 331-341, Taylor & Francis, Mar 2017. doi: 10.1080/02564602.2017.1299595, (SCI-Q2).

 

12.  Chilaka Ranga, Ashwani Kumar and R. Chandel, “Expert system for condition monitoring of power transformers using fuzzy logic,” Journal of Renewable and Sustainable Energy, AIP Publishing, vol. 9, no. 4, pp. 1-16, July 2017. doi: 10.1063/1.4995648, (SCI-Q2).

 

13.  Chilaka Ranga and Manoj Teruvai, “Multi-criterion fuzzy model for power transformer insulation monitoring,” Electrical Engineering, Taylor and Francis, vol. 104, pp. 3535–3546, 2022, doi: 10.1007/s00202-022-01566-9, (SCI-Q2).

 

14.  T. Manoj, C. Ranga, “An intelligence expert system for quality health monitoring of power transformers using testing attributes,” in Engineering Research Express, vol. 5, 2023. doi: 10.1088/2631-8695/acd2a8, (SCI-Q3).

 

15.  Chilaka Ranga, Teruvai Manoj, “Multi-parameter-based fuzzy logic diagnostic system for health assessment of power transformer,” Australian Journal of Electrical and Electronics Engineering, pp. 1–11, May 2024. doi: 10.1080/1448837X.2024.2356436, (ESCI-Q3).

 

16.  Chilaka Ranga, Ashwani Kumar and R. Chandel, “Performance analysis of cellulose and Nomex-910 impregnated oil filled power transformers,” International Journal of Electrical Engineering and Informatics, IJEEI, vol. 9, no. 2, pp. 394-406, July 2017. doi: 10.15676/ijeei.2017.9.2.13 (SCOPUS-Q3).

 

17.  Chilaka Ranga, Ashwani Kumar and R. Chandel, “Fuzzy logic expert system for optimum maintenance of power transformers,” International Journal of Electrical Engineering and Informatics, IJEEI, vol. 8, no. 4, pp. 836-850, September 2016. doi: 10.15676/ijeei.2016.8.4.10 (SCOPUS-Q3).

 

18.  Chilaka Ranga, Ashwani Kumar and N. Sudheer Reddy, “Life estimation of thermally insulating papers of rotating machines by Arrhenius Model,” Materials Toady Proceedings, vol. 9, no. 4, pp. 10643-10647, 2017. doi: 10.1016/j.matpr.2017.06.435, (SCOPUS-Q3).

 

19.  Chilaka Ranga and Ashwani Kumar, “Expert system for health index assessment of power transformers,” International Journal of Electrical Engineering and Informatics, IJEEI, vol. 9, no. 4, pp. 836-850, December 2017. doi: 10.15676/ijeei.2017.9.4.16 (SCOPUS-Q3).  

 

 

 

 

 

Other Info.

Outreach Activities

  • Technical Session Chair, MARC-2020, Krishna college of Engineering, Ghaziabad, India.
  • Reviewed many papers of reputed international journals viz. IEEE Transactions on Power Delivery, IEEE Transactions on Electrical Insulation and Dielectrics, International Journal of Power and Energy Systems, Energy Reviews, Electrical Engineering, IETE Technical Review, Energy, etc.
  • Reviewed several papers of reputed conferences viz. IEEE CATCON, INDICON, PIICON, IntechOpen, IPEC, etc.
  • Reviewed and Evaluated Ph.D. Thesis
  • Technical Committee Member for several International and National Conferences and STC / Workshops.
  • Technical Committee Member, CESPE-2022, China.
  • Technical Committee Member, AITEES-2022, Gudlavalleru, India.
  • Technical Committee Member, IPEC-2022, India.

 

 Expert Talks/Lectures Delivered

  • Delivered Expert Lecture on 'Latest Trends in Condition Monitoring of Power Transformer', in One Week workshop on ‘Recent Developments in  High  Voltage  Insulation  (RDHVI)’, organized by JNTU, Kakinada, Andhra Pradesh, June 22-24, 2023.
  • Delivered Expert Lecture on 'Recent Trends in Condition Monitoring and Fault Diagnosis of Power Transformer', in One Week FDP on Recent Advances in Electrical Engineering, organized by GATES Institute of Engineering, Andhra Pradesh, Mar. 2022.
  • Expert Lecture on 'Recent Trends in Transformer Diagnosis', NIT Srinagar, in AICTE sponsored One Week FDP, organized by Arya College of Engineering and IT, Jaipur, Rajasthan, Feb. 24th, 2021.
  • Expert Talk on 'Application of AI Techniques in Transformer Diagnosis’, in BMS, Bangalore, Feb. 5th, 2021.
  • Expert Talk on 'Application of AI Techniques in Condition Monitoring of Electrical Apparatus', in NIT Srinagar, Sep. 2020.
  • Delivered Expert Lecture on 'Recent Trends in Transformer Diagnosis', in AICTE sponsored One Week STTP on Electrical Power System, organized by Arya College of Engineering and IT, Jaipur, Rajasthan, Oct., 2020.
  • Delivered Expert Lecture on 'Condition Monitoring and Fault Diagnosis of Power Transformer', in AICTE sponsored One Week STTP on Automation and Intelligent Control of Electrical Systems Phase-III, organized by EED, Gudlavalleru Engineering College, Andhra Pradesh, Nov., 2020.
  • Delivered Expert Lecture on 'Recent Trends in Diagnosis of Power Transformer', in AICTE sponsored One Week STTP on Automation and Intelligent Control of Electrical Systems Phase-III, organized by EED, Gudlavalleru Engineering College, Andhra Pradesh, Nov., 2020.
  • Delivered Expert Lecture on 'Application of Fuzzy Logic in Engineering Applications' in TEQIP-III sponsored One Week Workshop on Application of MATLAB in Engineering organized by IET On Campus NIT Srinagar, Nov., 2020. 
  •  Delivered Expert Lecture on 'Condition Monitoring of Power Transformer', in AICTE sponsored One Week STTP on Automation and Intelligent Control of Electrical Systems Phase-III, organized by EED, Gudlavalleru Engineering College, Andhra Pradesh, Feb., 2022. 

 

 Workshops/Short Term Courses Attended 

    • Six days FDP on “Outcome base curriculum” NITR Chandigarh, Feb. 2-7, 2025.
    • One week STTP on “Power system and power electronics research application and real time simulation,” by EED, NIT Raipur.
    • One Week workshop on ‘Recent Developments in  High  Voltage  Insulation  (RDHVI)’, organized by JNTU, Kakinada, Andhra Pradesh, June 22-24, 2023. (in NIT Raipur is Added)
    • 14th India Doble Power Forum, organized by DobleIndia, Vadodara, 29 Nov 2016 to 02 Dec 2016.
    • Workshop on Modern Diagnostic Tools for Assessing Health of Electrical Apparatus, organized by National Institute of Technology, Hamirpur, 02-03 September, 2017.
    • STC on Power Quality in Deregulated Power System with Matlab Applications, organized by National Institute of Technology, Hamirpur, 6-11 June, 2016.
    • STC on Matlab and its applications in engineering and research, organized by NIT, Hamirpur, 17-21 August, 2015.
    • STC on Power Quality in Deregulated Power System with Matlab Applications, organized by National Institute of Technology, Hamirpur, 5-9 June, 2014.
    • STC on Emerging trends in power transformer diagnostics, organized by National Institute of Technology, Hamirpur, 06-08 September, 2014.
    • STC on Power generation operation and control, organized by National Institute of Technology, Hamirpur, 08-12 July, 2013.
    • STC on Power Quality in Deregulated Power System with Matlab Applications, organized by National Institute of Technology, Hamirpur, 15-19 July, 2013.
    • Workshop on Diagnostic techniques of power transformerorganized by Bahra Group of Institutes, Patiala, 22 Dec 2011.
    • Workshop on MATLAB and its applications in Engineeringorganized by NIT Hamirpur, 2012
    • Six days "faculty induction programme" organized by NIT Raipur and NITTTR Bhopal 3-8, June 2024

Honors and Awards 

  • First class with Distinction through Academic Carrier.
  • Appreciation for Coordinator, GeM purchases, NIT Srinagar
  • IEEE Student Branch Chair of National Institute of Technology Hamirpur from Nov. 2016 to Oct. 2018.
  • Departmental Post Graduate Committee (DPGC) Member from Jan 2015 to July 2016.
  • Selected for get together with President of India in Rastrapathi Bhavan, Delhi in 2015.
  • Qualified Gate- 2010, 2011 and 2012.
  • Secured first rank in tenth and +2.
  • NCC from the Government of India.
  • XXX mathematical Olympiad merit.
  • General knowledge and talent test merit certificate from state board of A.P., 2004.
  • Faculty Coordinator / Facilitator for IET On Campus NIT Srinagar.