Substation & Switchyard Engineering.
AIS and GIS transmission substations, collector and pooling substations and switchyards from 33 kV to 765 kV, designed to pass utility review and to be safe to operate.
Is This Where You Are?
Choose your role to see what we do and what to read next.
Collector and pooling substation design built around the utility's specification, with protection and earthing that stand up to review.
AIS and GIS substation design to your specification, from single-line diagram to bay layout, protection and IEC 61850 automation.
Detailed engineering, equipment specifications and site support through energisation.
Engineering Scope.
The support is selected around your Asset, the decision ahead and the agreed Project Stage.
Primary Design
- Single-line diagrams
- Layouts, sections and bay arrangement
- Electrical clearances
- Equipment ratings, specifications and schedules
- Cable routing and schedules
Protection, Control and Automation
- Protection philosophy and setting calculations
- Protection schematics and relay wiring
- Substation automation to IEC 61850
- SCADA interfaces and metering
Earthing and Lightning Protection
- Earthing grid design from measured soil resistivity
- Step and touch potential verification
- Lightning protection design
Civil & Structural
- Gantries and equipment supports
- Equipment and transformer foundations
- Cable trenches, ducting and drainage
At Each Project Stage.
Where you are in the Project decides what you need from us.
Feasibility & Concept
Grid-level analysis that stands up to review.
- Load Flow and Network Performance Studies
- Renewable Energy Integration Study
- Preliminary Substation and Transmission Design
- System Planning and Capacity Assessment
Detailed Design
Built for first-submission approval.
- Substation and Switchyard Design — AIS and GIS
- Protection Philosophy and Setting Calculation
- Earthing Grid Design and Step / Touch Potential Verification
- Insulation Coordination Studies
- Substation Structure, Gantry and Foundation Design
Tender & Procurement
Equipment chosen for a thirty-year life.
- Technical Procurement and Vendor Evaluation Support
- Technical Specification Review
- Bid Evaluation Support
- Due Diligence and Technical Audit
Construction
Oversight to utility standards.
- Construction Quality Surveillance and QA/QC
- Owner's Engineer Representation
- Installation Supervision and Site Acceptance
Pre-Commissioning & Commissioning
Commissioning that meets every requirement.
- Earthing System Testing
- Relay Testing and Commissioning
- Transformer, Cable and Switchgear Testing
- Partial Discharge Testing — HFCT, UHF and Acoustic
- SF6 Gas Leakage Detection
- Power Quality Assessment and Infrared Thermography
- Commissioning Management
Operation & Maintenance
Reliability and compliance in Service.
- Regulatory and Statutory Compliance Audit
- Thermography and Partial Discharge Audits
- Power Quality Audit
- Predictive Maintenance and Condition Monitoring
- Electrical Asset Lifecycle Management
- Breakdown Maintenance Support
- Protection and Relay Testing Training
Proof in Practice · Chemical · Detailed Engineering
Detailed Engineering of a Multi-Specialty Chemical Plant
Mechanical, electrical, instrumentation and thermal design delivered together for a multi-product chemical plant.
- Sector
- Industrial & Process Plants
- Year
- 2023
How We Work on It.
The method behind every engagement. The detail is set out in the proposal and the design basis.
Inputs and Deliverables.
A practical starting point and the Engineering outputs to agree for your Project.
What We Need from You
- Connection scheme, voltage levels and number of bays
- Site boundary and layout constraints
- Utility, licensee or Client specifications
- Soil and survey data, where available
- Programme and current stage
Send what is available. We will identify missing information before confirming the scope and programme.
What You Receive.
- Design basis
- Single-line diagrams and protection schematics
- Layouts, sections and bay arrangement
- Protection setting calculations and relay wiring
- IEC 61850 automation architecture, where included
- Earthing and lightning protection design
- Equipment specifications
- Structural and foundation drawings
The exact deliverables are fixed in the agreed scope for each Project.
Standards and Compliance.
We engineer to the standards and regulations that govern your Project, fixed in the design basis.
Typical references for this Service: IEC 61936-1, IEC 62271, IEC 61850, IEEE 80.
Applicable standards and editions are agreed and fixed in each Project's design basis.
How We Assure the Work
Appointed the Way You Need.
Detailed Engineer
Construction-ready substation design and site support.
Owner's Engineer
Independent design review, oversight and test witnessing.
Design Partner
Equipment-interface design and specialist studies.
Questions Clients Ask.
Do you design both AIS and GIS?
Yes, from 66 kV to 765 kV for transmission substations, and from 33 kV for collector and pooling substations.
Can you design the collector substation for our renewable plant?
Yes. We design collector and pooling substations and switchyards that evacuate solar, wind, hybrid and BESS plants.
Which earthing standards apply?
IEEE 80, IEC 60364 and CEA Regulations, as the Project requires.
Do you test what you design?
Our own fleet tests up to 400 kV. Above that, accredited partners test under our supervision.
Where This Service Applies.
This Service appears in the scope of 6 Sectors. Select a Stage to see the full scope for that Sector.
This Service in Practice.
Selected engagements, described without confidential details.
From Our Engineers.
Practical engineering notes related to this page.
