Journals

• R. S. Tiwari, J. P. Sharma, O. H. Gupta, M. A. Abdullah Sufyan. “Extension of pole differential current-based relaying for bipolar LCC HVDC lines” Sci Rep 15, 16142 (2025). https://doi.org/10.1038/s41598-025-94842-0.
• R. S. Tiwari, O.H. Gupta, V.K. Sood, and S. Ansari, “Non-Unit Protection for Asymmetrical DC Line Faults in Bipolar LCC-HVDC Transmission Systems” IETE Journal of Research vol.70, issue 4, pp. 4305-4318, 2023. (DOI: 10.1080/03772063.2023.2217131, Publisher: Taylor & Francis Group, ISSN: 0377-2063)
• R. S. Tiwari, O.H. Gupta, and V.K. Sood, “Fault Detection Using Backward Propagating Traveling Waves for Bipolar LCC-HVDC Lines” Electric Power Components and Systems, vol.50, no.9-10, pp. 516-529, 2022. (DOI: 10.1080/15325008.2022.2136788, Publisher: Taylor & Francis Group, ISSN: 1532-5008).
• R. S. Tiwari, R. Kumar, O.H. Gupta, and V.K. Sood, “Dynamic Analysis of VSC-HVDC System with Disturbances in the Adjacent AC Networks” Accepted in Distributed Generation & Alternative Energy Journal, vol. 38, no. 5, pp. 1–30, Dec 2022. (DOI: 110.13052/dgaej2156-3306.3853, Publisher: River Publishers, ISSN: 2156-3306)

Book Chapters

• R.S. Tiwari, O.H. Gupta, V.K. Sood, “HVDC System Issues and Related Solutions using Soft Computing” Book chapter on Soft Computing Applications for Advancements in Power Systems, pp. 169–206, 2024, River Publishers, 978-877004111-9, 978-877004141-6.

Conferences

• R.S. Tiwari, M. Pachauri, J. P. Sharma, “Voltage THD-based Islanding Detection for Grid Integrated Wind Farm Systems” 2025 IEEE 2nd International Conference on Green Industrial Electronics and Sustainable Technologies (GIEST-2025), NIT Jamshedpur, 11th -13th October 2025.
• A. Singh, M. Pachauri, M. Zuhaib, R.S. Tiwari, “Design and Analysis of Off-Grid Solar PV Plant” 2025 IEEE 3rd International Symposium on Sustainable Energy, Signal Processing and Cybersecurity November 06 - 08, 2025, GIET University, Gunupur, Odisha.
• R. S. Tiwari, A. K. Sinha and P. Kumar, “Analysis of VSC-HVDC System in the Asynchronously Operating Grids During AC Line Faults” 2025 IEEE 1st International Conference on Smart and Sustainable Developments in Electrical Engineering (SSDEE), Dhanbad, India, 2025, pp. 1-5, DOI: 10.1109/SSDEE64538.2025.10968488.
• R.S. Tiwari, JP Sharma, A Kumaraswamy, “Design and Analysis of an Over Current Relay Based on MATLAB/Simulink Environment” International Conference on Renewable Energy Resources and Applications (ICRERA-2024), E3S Web of Conferences 591, 01011 (2024). https://doi.org/10.1051/e3sconf/202459101011.
• H. Agarwal, R. S. Tiwari and J. P. Sharma, “A Review of Signal Processing Techniques for Detection and Classification of Faults in Transmission lines” 2024 3rd International Conference on Power Electronics and IoT Applications in Renewable Energy and its Control (PARC), Mathura, India, 2024, pp. 433-438, DOI: 10.1109/PARC59193.2024.10486668.
• R.S. Tiwari, R. Kumar, and O.H. Gupta, “Detection and Classification of Faults in VSC-HVDC System Based on Single End Ground and Pole Differential Current Components” in Recent Advances in Power Systems. Lecture Notes in Electrical Engineering, vol 960. Springer, Singapore. DOI: 10.1007/978-981-19-6605-7_15.
• R. Kumar, R. S. Tiwari, and O. H. Gupta, “Transient Current Characteristics of VSC-HVDC System during Single and Double Pole Fault Conditions” 2022 IEEE Students Conference on Engineering and Systems (SCES), Prayagraj, India, 2022, pp. 1-6. DOI: 10.1109/SCES55490.2022.9887750.
• R. S. Tiwari, O. H. Gupta, and S. Ansari, “Frequency Spectral Analysis of 6-Pulse LCC-HVDC in Single Conductor Ground Return Configuration Using FFT” 2022 2nd International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), Mathura, India, 2022, pp. 1-5. DOI: 10.1109/PARC52418.2022.9726546.
• R.S. Tiwari, O.H. Gupta, and V.K. Sood, “Ground Fault Detection Using Pole Differential Current Measurement for 2-Terminal Bipolar HVDC Lines” EPREC 2021, In: Gupta, O.H., Sood, V.K. (eds) Recent Advances in Power Systems. Lecture Notes in Electrical Engineering, vol 699. Springer, Singapore. DOI: 10.1007/978-981-15-7994-3_1.
• R.S. Tiwari, “HVDC Transmission Topology and Control Analysis” EPREC 2021, In: Gupta, O.H., Sood, V.K. (eds) Recent Advances in Power Systems. Lecture Notes in Electrical Engineering, vol 699. Springer, Singapore. https://doi.org/10.1007/978-981-15-7994-3_15.
• R. S. Tiwari and O. Hari Gupta, “Study of Combined Time & Current Grading Protection Scheme for Distribution System” 2020 International Conference on Power Electronics & IoT Applications in Renewable Energy and its Control (PARC), Mathura, India, 2020, pp. 443-448, DOI: 10.1109/PARC49193.2020.236651.
• R.S, Tiwari, M. Goyal, P. Prakash, (2020). “Investigation of Transient Stability in IEEE 9-Bus System Using Power World Simulator” In: Manna, S., Datta, B., Ahmad, S. (eds) Mathematical Modelling and Scientific Computing with Applications. ICMMSC 2018. Springer Proceedings in Mathematics & Statistics, vol 308. Springer, Singapore. https://doi.org/10.1007/978-981-15-1338-1_24.

Honours and Awards

• Best Paper Award 2023 for Distributed Generation and Alternative Energy Journal for the paper titled “Dynamic Analysis of VSC-HVDC System with Disturbances in the Adjacent AC Networks.”
• Recipient of Elite+Silver Certificate by NPTEL Online Certification on completing an 8-week course on “Digital Protection of power system” with a consolidated score of 75 % in January – March 2022.
• MHRD Scholarship -Govt. of India for M. Tech. studies.

Reviewer

• Scientific Reports
• Frontiers in Energy Research, section Smart Grids
• Electrical Engineering Journal
• Distributed Generation & Alternative Energy Journal
• IEEE International Conference on Electric Power and Renewable Energy Conference (EPREC-2026)