High Voltage Substations
High-voltage substations play a critical role as the connection point between solar power plants, Battery Energy Storage Systems and the national grid. They ensure reliable power transmission, voltage transformation, protection and control of the whole system.
01Key Advantages
- Stable transmission of generated power to the national grid
- Voltage transformation from MV up to HV levels of 400 kV
- Comprehensive protection against short-circuits, overloads and voltage fluctuations
- Capability to integrate renewable sources and energy-storage systems
- Expandability for future capacity upgrades
02Applications
- Utility-scale solar and wind power plants
- Large industrial and commercial complexes with high energy demand
- Microgrid and BESS integration with the national grid
- Regional and national transmission & distribution projects
03Technical Features
- High-efficiency power transformers
- Modern circuit breakers and disconnectors with automation capability
- Advanced and intelligent protection relays
- SCADA monitoring and control for precise operation and maintenance
- Robust design for diverse environmental and climatic conditions
- AIS — cost-effective, suitable for open outdoor spaces
- GIS — compact, safe and ideal for limited-space or sensitive environments
04Capacity & Range
Indicative ranges — final design values are confirmed during the engineering phase.
| Parameter | Typical Value | Test Method |
|---|---|---|
| Voltage levels | up to 400 kV | IEC 61936-1 |
| Technologies | AIS / GIS / Hybrid | IEC 62271-203 |
| Power transformers | up to 500 MVA | IEC 60076 |
| Protection & control | Numerical relays, IEC 61850 station bus | IEC 61850 |
| Insulation coordination | Site-specific BIL study | IEC 60071 |
| Earthing system | Step & touch voltage verified | IEEE 80 |
05Delivery & Shipping Options
We deliver worldwide under Incoterms 2020 (FOB, CFR, CIF, DAP), with full documentation, third-party inspection and flexible packing.
Heavy-lift shipping
Power transformers and GIS bays move by break-bulk or flat-rack with route surveys performed in advance.
Special road transport
Multi-axle hydraulic trailers, escort and permits arranged for oversize loads.
Impact monitoring
Shock recorders and nitrogen-filled transport for transformers, verified on delivery.
Site erection
Delivery sequenced with civil works so equipment lands only when foundations are ready.
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