Below are four flagship projects where Keentel Engineering delivered end-to-end substation design (primary, secondary) and comprehensive power system studies to ensure safe, reliable, and standards-compliant installations.
345 kV EHV Greenfield Substation
Project Scope
Design and build of a new 345 kV / 138 kV transmission substation to integrate 400 MW of wind generation into the regional grid.
Primary Design Services
- Full primary layout (GA) drawings with major equipment placement and conductor routing
- Transformer, breaker, disconnect switch, CT/VT, and wave-trap specifications
- 4 000 A tubular aluminum rigid bus design
- IEEE Std 80™ grounding grid analysis using CDEGS
Secondary Design Services
- Protection & control single-line diagrams and wiring schematics
- AC/DC auxiliary systems with IEEE Std 485™ battery sizing
- RTU/SCADA integration: point mapping and telemetry configuration
Power System Studies
- Short-circuit (IEEE C37.010)
- Load flow & reactive power planning
- Protection coordination (SEL-411L, SEL-351, SEL-487E)
- Arc-flash hazard analysis (IEEE 1584-2018)
- Ground grid step/touch voltage assessment
Key Deliverables & Impact
- 150+ IFC drawing sets & equipment BOM
- PE-sealed engineering certification in multiple states
- Successful substation energization with zero safety incidents
- “Proactive RFI responses” earned ongoing preferred-partner status
230 kV GIS Substation Expansion
Project Scope
Expansion and modernization of an existing 230 kV gas-insulated substation, adding two new feeders and upgrading legacy protection.
Primary Design Services
- 3D CAD-based GIS bay layout modifications
- New feeder bay and duct-bank routing
- Civil coordination for control building enlargement
Secondary Design Services
- IEC 61850 digital protection scheme design
- Microprocessor relay replacements (SEL/GE)
- Digital fault recorder (DFR) installation and disturbance monitoring
Power System Studies
- Breaker duty analysis
- Relay coordination & selectivity for transmission line protection
- Transient stability (NERC TPL)
- EMTP modeling for breaker TRV assessment
Key Deliverables & Impact
- Updated one-line, three-line, and P&C schematics
- Comprehensive settings database
- Arc-flash labeling across new and retrofitted equipment
- Expansion completed without any substation outage, earning additional retrofit work
115 kV / 34.5 kV Collector Substation (BESS)
Project Scope
EPC-level design for a 100 MW / 400 MWh battery energy storage collector substation tying into a 115 kV network.
Primary Design Services
- Space-optimized layout under site constraints
- Single-bus configuration with future breaker-and-a-half provision
- 75–125 MVA transformer with on-load tap changer
Secondary Design Services
- Transformer differential (87T) and bus protection (87B) schemes
- BMS integration for trip signaling
- Dual-fiber protection & redundant SCADA architecture
Power System Studies
- Load flow for capacitor bank optimization
- Fault analysis including BESS short-circuit contribution
- Harmonic study for IBR interactions
- EMT switching transient analysis for inverter protection
Key Deliverables & Impact
- IFC drawings & FAT support docs
- Detailed commissioning & relay-setting plans
- First large-scale BESS substation for the client, delivered in under 12 months
- Performance exceeded interconnection guarantees
500 kV Bulk Power Substation
Project Scope
Greenfield design of a 500 kV / 230 kV bulk substation on a major interregional corridor, enhancing transfer capability by 1 200 MW.
Primary Design Services
- Breaker-and-a-half arrangement
- 500 kV gas circuit breaker & disconnect switch specifications
- High-ampacity rigid/strain bus with seismic considerations
Secondary Design Services
- High-speed fiber-based bus differential protection
- Line differential & distance protection coordination
- N-1/N-2 redundant protection zoning
Power System Studies
- Interconnection SIS modeling
- EMT study for breaker restrike/TRV risks
- GIC impact assessment (NERC TPL-007)
- NERC TPL reliability assessment
Key Deliverables & Impact
- 400+ page Engineering Study Report & IFC drawings
- FAT/SAT checklists, commissioning manuals, and staff training
- Early energization ahead of compliance deadlines, securing client recognition
Why Clients Choose Keentel Engineering
- Integrated Primary & Secondary Design under one roof
- Advanced Modeling & Studies: PSSE, PSCAD, EMTP, CDEGS
- NERC & IEEE Expertise: PRC, TPL, 1584, 80, 485, 2800 compliance
- First-Time ISO Acceptance with minimal RFIs
- Repeat Business driven by reliability, responsiveness, and precision
Ready for Your Next Substation Project?
Explore our Electrical Substation Design Services and partner with Keentel Engineering to deliver turnkey, standards-compliant substations—on time and on budget.
📞 813-389-7871 | 📧 contact@keentelengineering.com
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