POWERGRID Augments 765 kV Hub Substations with 1,500 MVA Transformers to Evacuate 20 GW Rajasthan Solar
Power Grid Corporation of India Limited (POWERGRID) has commissioned massive 765/400 kV interconnecting transformer (ICT) augmentations and 300 Mvar synchronous condenser units across the Ramgarh, Bhadla-III, and Fatehgarh-II substations in Rajasthan to evacuate over 20 GW of mega solar park generation.
- تاريخ النشر: 2026-09-28
- الفئة: المحولات والشبكة
- المصدر الأصلي: Power Grid Corporation of India Limited (POWERGRID) & Central Electricity Authority
- مدة القراءة: 5 min
Super-Grid Transformation in the Thar Desert
Western Rajasthan hosts some of the world’s largest ultra-mega solar power parks, including the sprawling Bhadla and Fatehgarh complexes. To handle sudden solar generation surges and wheel electricity across the Inter-State Transmission System (ISTS) to northern and western industrial states, POWERGRID executed major substation capacity expansions.
At Ramgarh and Kanpur (PG), new banks of single-phase 765/400 kV 500 MVA autotransformers (forming 1,500 MVA three-phase banks) were energized, manufactured under domestic Make-in-India programs with high-permeability CRGO steel cores and automated online moisture management.
Synchronous Condensers for Short-Circuit Strength at Fatehgarh-II
Because the massive concentration of grid-following solar inverters drastically suppressed the regional Short-Circuit Ratio (SCR) to near-critical thresholds (<1.8), POWERGRID integrated utility-scale synchronous condensers at the Fatehgarh-II 765 kV pooling substation.
The synchronous condensers inject instantaneous dynamic reactive power and physical rotational inertia, stabilizing grid frequency during sudden cloud cover transients and high-voltage line faults.
Pioneering 765 kV Double-Circuit Line Corridors
The substation augmentations operate in synchrony with the newly commissioned 765 kV double-circuit Ramgarh–Bhadla III transmission line, creating an ultra-robust 765 kV ring that slashes transmission losses by 22% compared to parallel 400 kV circuits.
The commissioning keeps India firmly on track toward its national target of 500 GW of non-fossil generation capacity by 2030.