From generation to the grid
NEWATT delivers electrical engineering for thermal, hydro and gas / co-generation power plants, and for the high-voltage substations and transmission infrastructure that connects them to the grid — for state utilities, central utilities and independent power producers across India.
Our scope covers protection coordination for large generators, substation engineering from 33 kV to 400 kV, cable schedule preparation for Power Grid Corporation of India assignments, and relay setting calculations for AIS and GIS switchyards.
What this sector involves
Electrical engineering for a generation plant covers generator protection, main transformer sizing and protection, auxiliary power supply design, and the switchyard electrical and civil engineering that ties the plant to the transmission system. Every element is interdependent — the transformer protection settings depend on the fault levels set by the switchyard, and the earthing design has to account for both the plant's internal earth system and the utility's remote earth.
NEWATT's team has leadership-level experience on 400/220/132/33 kV AIS and GIS substations executed for BSPTCL, UPPCL, PSPTCL and GETCO — substations at this voltage class require a more rigorous approach to insulation coordination, protection grading and bus protection than distribution-voltage work, and the documentation standards utilities expect for their transmission assets are correspondingly demanding.
For PGCIL cable schedule assignments — SS-129 KPS2, Pavagada, Rajgarh, Jhatikara — NEWATT prepared cable schedules for Power Grid Corporation of India transmission projects, a scope that requires detailed understanding of HV and EHV cable engineering standards and the format PGCIL's procurement and construction teams work from.
Typical scope for Power & Utilities
- 400/220/132/33 kV AIS & GIS substations
- Generator protection & relay coordination
- PGCIL cable schedule preparation
- Thermal, hydro & gas plant engineering
- Transmission-line planning
- Earthing & lightning protection
- Protection grading to IEC 60255
- CERC & SERC grid code compliance
NEWATT's utility scope
HV/EHV substation design
End-to-end AIS and GIS substation engineering at 33 kV to 400 kV — general arrangement, single-line diagrams, protection schemes, earthing design, civil and structural works — executed to the technical standards utilities and PGCIL require for transmission-class assets.
Generator & transformer protection
Generator protection to IEC 60255 and IEEE C37.102 — differential, impedance, loss-of-excitation, pole slipping, reverse power and stator earth fault — coordinated with transformer protection, bus protection and the grid-interface switchgear to form a complete protection scheme for the generation unit.
Earthing & lightning protection
Switchyard and plant earthing designed to IEEE 80 / IS 3043, with CDEGS analysis for complex multi-structure sites where step and touch potentials cannot be reliably calculated by hand methods. Lightning protection to IEC 62305, coordinated with the earthing system.
CERC & SERC compliance
Grid code compliance studies to CERC regulations and applicable SERC requirements — reactive power capability, frequency response, protection settings and relay type — prepared in the format central and state utilities require for synchronisation approval.
Beyond the standard scope
PGCIL cable schedule preparation
Cable schedules for Power Grid Corporation of India transmission projects — SS-129 KPS2, Pavagada, Rajgarh, Jhatikara — prepared in the format PGCIL procurement and construction teams work from, covering every HV and EHV cable in the substation.
Auxiliary power system design
Station auxiliary power — essential HV auxiliary transformer sizing, LV distribution, DC battery and charger system, UPS for protection and SCADA — designed to ensure the plant can start, operate and safely shut down under every credible fault or supply-interruption scenario.
Thermal & co-generation plant engineering
Electrical and power system engineering for coal, gas and co-generation plants — generator step-up transformers, auxiliary transformer sizing, protection coordination for the station electrical system, and earthing for plant buildings and cable routes.
Short circuit & protection grading
System fault level calculations to IEC 60909 for switchgear and equipment rating verification, combined with complete protection coordination across the generation and transmission system.
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