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Transmission Substation.

Grid substations from 66 kV to 765 kV, AIS and GIS. Protection, earthing and automation decide how safely they run for thirty years.

What We Deliver Talk to an Engineer

Types We Engineer.

No two Transmission Substation Projects are the same. Here is what changes from one type to the next.

Air-Insulated (AIS)

Outdoor substations with open busbars and equipment.

What We Focus On

Layout, clearances and gantries
Earthing over a large area

Gas-Insulated (GIS)

Compact SF6-insulated substations for tight sites.

What We Focus On

Compact layout and building design
Partial discharge and SF6 monitoring

Where This Asset Sits.

The Substations, Lines & Grids power chain, and this asset's place in it.

GenerationPower stations and renewable plants

Transmission Lines66 kV to 765 kV

Transmission SubstationsAIS and GISThis asset

Distribution Substations11 kV to 66 kV

Distribution NetworksHV, MV and LV to consumers

Protection & AutomationRelays, IEC 61850 and SCADA across every voltage level

Project Delivery

Project location, local requirements and any site support are confirmed for the agreed scope.

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What We Deliver for This Asset.

Each line links to the Service that delivers it.

Substation & Switchyard EngineeringLayout, protection and IEC 61850 automationEngineering & StudiesEnquire

Power System Studies & SimulationShort circuit, insulation coordination and earthingEngineering & StudiesEnquire

Steel Structure & Foundation DesignGantries and equipment foundationsEngineering & StudiesEnquire

Procurement & Construction SupportFAT witness of major equipment Enquire

Testing & CommissioningRelay, transformer, switchgear, partial discharge and SF6 testing Enquire

Technical Audits & AssessmentsThermography and partial discharge audits Enquire

Across the Project Stages.

Where each part of the work sits in the life of a Transmission Substation.

Stage 01Feasibility & ConceptPower System Studies & Simulation

Stage 02Detailed DesignSubstation & Switchyard Engineering Power System Studies & Simulation Steel Structure & Foundation Design

Stage 03Tender & ProcurementProcurement & Construction Support

Stage 04ConstructionAvailable on request

Stage 05Pre-Commissioning & CommissioningTesting & Commissioning

Stage 06Operation & MaintenanceTechnical Audits & Assessments

Full Stage Scope for Substations, Lines & Grids

Standards and Compliance.

We engineer to the standards and regulations that govern the Project, fixed in the design basis.

International StandardsIEC, IEEE, ISO, ASME and API standards, as the Project requires.

National CodesThe codes of the country where the asset is built: BIS and CEA in India, NEC in the USA, BS in the UK, EN in Europe, AS/NZS in Australia, GSO and SASO in the Gulf.

Utility & Authority RequirementsGrid codes, utility specifications and the approvals of the connecting authority.

Client & Lender SpecificationsOwner, licensor and lender requirements, fixed in the design basis.

Typical references for this asset: IEC 61936-1, IEC 62271, IEC 61850, IEEE 80, IEC 60909, IEEE 1584.

Related Projects.

Selected engagements, described without confidential details.

All Projects

Utility · Protection2023Relay Coordination for a Distribution SystemA medium-voltage utility network with rising faults and outages: revised relay settings for selective, faster fault isolation.Substations, Lines & GridsRead the Case Study ↗

From Our Engineers.

Practical engineering notes related to this page.

All Insights

InsightFactory Acceptance Testing: What the Owner Should WitnessFactory Acceptance Testing (FAT) proves that major equipment meets its specification before it leaves the factory. An ow…Read the Article

Planning a Transmission Substation?

Share the asset, the location and the stage. An engineer will come back with a proposed scope.

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