India's extra-high-voltage transmission network spans hundreds of thousands of circuit-kilometres of 66 kV to 765 kV overhead lines. Maintaining the integrity of this vast network requires specialised diagnostic tools that can identify developing faults on energised lines without shutdown — and protection testing tools that verify the relay systems which clear faults when they occur.
Key Applications
Thermal Imaging of Overhead Lines
- ›Airborne thermal surveys using helicopter or drone-mounted IR cameras
- ›Ground-level inspection using long-range telephoto IR cameras (YRH600)
- ›Identification of thermal anomalies at joints, strain clamps, and spacer dampers
UV Corona Detection
- ›Ground-based UV patrol for up to 765 kV towers using OFIL DayCor cameras
- ›Helicopter-borne UV survey for rapid long-line inspection
- ›Quantitative corona intensity measurement for severity assessment
Protection Testing at Transmission Substations
- ›End-to-end distance relay zone reach and time verification
- ›Pilot protection scheme testing (POTT, DUTT, blocking schemes)
- ›Auto-reclose dead-time and synchronism-check function testing
- ›Power swing blocking and out-of-step tripping verification
Products Used in This Sector
Clients in This Sector
PGCIL PowerGridState transmission utilitiesPTCULHVNLUPPTCLEPC transmission contractors
Discuss Your Requirements
Contact our technical team for application advice, product recommendations, or a service proposal.
Contact Us