Summary
India’s rapid growth in renewable energy has significantly changed the way the national transmission system behaves during disturbances. As inverter‑based resources (IBRs) continue to replace synchronous generation, the grid is experiencing lower inertia, reduced short‑circuit strength, and greater sensitivity of protection schemes to operating conditions. Traditional protection methods, developed for stronger and more predictable system conditions, are increasingly challenged in weak infeed regions, multi‑terminal evacuation corridors, and areas affected by waveform distortion.
Read more Read lessThis paper examines protection‑related challenges observed in renewable‑dominated transmission corridors in India. Operational experiences show that several disturbances in recent years resulted in substantial renewable generation loss, often triggered by delayed fault clearing, slow post‑fault voltage recovery, and interactions between inverter control behaviour and conventional protection schemes.
The paper highlights the benefits of advanced protection approaches such as line current differential protection, time‑domain methods, and travelling‑wave‑based fault detection, which offer faster and more reliable operation under inverter‑dominated conditions. It also considers the influence of power‑quality issues, including harmonics and transient overvoltages, on relay performance. The overall findings provide practical insights for strengthening protection systems in high‑renewable grids.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B5_10640_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | India |
| Study committees | |
| File size | 678 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
RAI* Ankit Kumar - Central Transmission Utility of India Ltd; SARKAR Kishore Kumar - Central Transmission Utility of India Ltd; BAGADIA Vikas - Central Transmission Utility of India Ltd; ROZEKAR Dilip Nagesh - Central Transmission Utility of India Ltd
Keywords
