Engineering & Design Services


● Engineering & Design Services
● Utility Interconnection Design Services
● Substation Grounding Studies & Design


OneLine provides a complete line of power system engineering and design services. Using advanced design software, we work closely with our clients to solve their difficult design problems and achieve a successful project outcome. These specialty services are the very core of our company.

Our engineering services include:

• Load flow and short circuit calculations
• Motor starting analysis
• Insulation coordination studies
• Capacitor bank switching studies
• TRV studies
• Transformer inrush studies
• Reactive power compensation studies
• Protection relay coordination studies
• Protection relay settings and configuration
• Substation RTU and HMI configuration
• Power cable sizing calculations
• Arc flash hazard calculations
• Grounding studies and analysis

Our project design services include:

• Complete Project Management services
• Connection application assistance
• Power system analysis and studies
• Detailed equipment and installation specification development
• Detailed protection and control system development and design
• Detailed teleprotection scheme development and design
• Detailed relay panel and E-house design
• Substation automation and system integration design
• Detailed engineering drawing packages
• Commissioning and testing site assistance

For a typical project, the scope of work undertaken by OneLine includes all phases of engineering and design including all calculations, detailed drawings, specifications and reports. We work as a team with our clients to achieve the successful completion of their projects.

OneLine Engineering is part of Columbus Utility Services

About Us
Selected Projects
High Voltage EPC Services

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