Mesa’s Power Delivery design capability encompasses all transmission/distribution voltage levels, from extra high voltage to distribution levels, as well as both open air-insulated and metal clad designs. The highly qualified and experienced Mesa staff of engineers and designers provides a full range of Power Delivery services to our clients. Mesa has employees with a combined total experience of over 5,500 years for many utilities across the U.S.
Substation & Switchyards Experience
- Over 230 Professional, Technical, and Administrative Employees
- 49 Registered Professional Engineers working in Power Delivery Substation
- Over 2000 years of substation and switchyard experience
2000 Years Experience Broken Down
- 40 years of TPS Planning Experience
- 1700 years of Design Experience
- 175 years of Communications
- 90 years of Field Testing and Construction
- Completed over 7,500 substation design projects over the last 10 years.
Types of Projects
- Breaker Replacement
- Line Relay Replacement
- “Greenfield” Station
- Transformer Bank Replacement/Addition
- Metering Upgrades
- Capacitor Bank
- Reactor Bank
In the past five years, Mesa has documented cost savings exceeding $11M to a large electric utility. These savings have come in the form of improvement in unit costs, providing new and better methods and techniques, and proposal of new technology. Click the areas below to read more.
Civil Engineering
For more information about our Civil Engineering services, click here.
- Erosion Control
- Permitting
- Roadway Design
- Site Development
- Site Plans
- Site Survey (Sub-Contract Partner)
- Soil Retention Structures
- Soils/Drainage/Grading
- Specifications
Electrical Panel Fabrication
- Relay Panel Fabrication
- SCADA Panels Fabrication
- Instrument Tag Engineering Service
- Complete Documentation
- Installation/Start-up Assistance
- Procurement Services
Extra High Voltage (500kV Substation Experience)
For more information about our Electrical Engineering services, click here.
- Last five years over 50-500kV substation projects
- Includes 9 PCB, 9 MOD, and 10 transformer bank replacement projects
- Includes addition of new 500 kV Bay
- Replacement of 500 kV relaying at 2 stations
Oil Containment Experience
Phase 1 Study:
- Station Evaluation
- Spill Prevention Control & Countermeasure (SPCC) Plan
Phase 2 Detailed Design:
- Containment & Diversionary Structures
- Storage
Phase 3 Implementation
- Remediation
- Construction
- Construction Management
- Procedures
- Inspection
- Maintenance
- Operation
- Training
Physical (Outdoor) Design
- Our Physical Design Group develops the following types of engineering documents:
- Electrical Equipment General Arrangements for the Switchyards and Substations
- Site Grading and Drainage
- Structures/Foundations
- Oil Containment Design
- Equipment Plans, Elevations, and Sections
- Control House Layout
- Grounding Studies & Soil Resistivity Analysis
- Conduit/Grounding Drawings
- Bills of Material
- Cable Schedules
Protection Schemes (Commonly Used)
- Bank Differential
- Breaker Failure Protection
- Bus Differential
- Capacitor Bank Protection
- Distance Protection
- Line Differential
- Over-current protection
- Over/Under Voltage protection
- Over/Under frequency and load-shedding protection
- Pilot Relaying Protection
Protection & Control (Indoor) Design
Our P&C Design Group develops the following types of engineering documents:
- Single Line Diagrams
- Three Line Diagrams
- Panel Front Views
- Elementary Diagrams (AC & DC)
- Equipment & Switchboard Wiring Diagrams
- Nameplates and Wiring Tags
- Isolation & Restoration Work Plans
- Detailed Work Descriptions
- Battery Studies
- Bills of Materials
SCADA Design & Programming
Mesa is experienced with the following RTUs:
- SEL-3530, SEL-2440, SEL-2411, SEL Axion RTAC,
- Cooper SG4250
- DAQ
- Dymec Star
- GE D-20 And GE D-20MX
- Landis & Gyr
- Integration With Relays, Breakers, Metering, Other SCADA Systems
System Planning, Studies & Analysis
- Load Flow Analysis
- Short Circuit Analysis
- Load Growth Projections
- Economic Best Practices
- Grounding Analysis
- Software Experience
- Etap, Milsoft’s Light Table & Windmill, Aspen, CAPE, CDEGS, and WinIGS
Telecommunication Design
Our Telecommunication Design Group is responsible for communications between Substations/ Switchyards, including:
- Digital Microwave Radio
- Power Line Carrier Relaying
- Fiber Optic Transport Systems
- GPS Radio
- Spread Spectrum Radio
- Cellular Phone – Radio Frequency Electromagnetic Field Measurement
- Wide Area Ethernet
- Battery & Charger Systems
- High Voltage Protection for Telephone Lines
- Telemetering
- Telephone Systems
- Bills of Materials
Our Telecommunication Design Group develops the following types of engineering documents:
- Single Line
- Connection Diagrams
- Jumper & Cable Diagrams
- Line-to-set Connection Diagrams
- Panel Arrangement
- Bill of Material
- Cable Schedules/Indices
Transmission & Distribution
- Experienced in Transmission-to-transmission Design
- Experienced in Transmission-to-distribution Design
- Extensive Station Distribution Experience
Relay Settings & Programming
SEL Relays
- 121
- 221
- 287
- 287V
- 311B
- 311C
- 311L
- 321
- 351
- 351R
- 351S
- 387
- 451
- 487
- 551
- 587
- 587Z
- 710
- 751
- 787
ABB Relays
- REL-512
Areva Relays (formerly GEC)
- Optimho
- LFZP114
- MCGG22
- MBCH
- MFAC
GE Relays
- F30
- F35
- F60
- B60
- D60
- T60
- IZC
- GCX
- GCY
- JBCG
Relays Settings & Programming Steps
- Gather Documents and Data
- Verify Model and Fault levels
- Revise MathCAD template
- Finalize preliminary settings through the relay setting curves in the model software
- Build relay settings files from final calculated settings and desired logic.
- Independent check and review of all assumptions, calculations and settings.