Focus
- Technical evaluation
- Cost analysis
- Engineering consulting
Tools used
- Microsoft Excel
- Microsoft Word
- Engineering documentation
Key objectives
Assess technical feasibility
Analyze equipment and system requirements
Estimate project costs
Support decision-making with structured analysis
Approach
- 01
Review project requirements
- 02
Perform technical analysis
- 03
Evaluate financial aspects
- 04
Compare alternative solutions
- 05
Provide structured recommendations
Technical analysis
Key technical aspects evaluated:
- Power system configuration
- Selection of electrical equipment
- Protection systems and reliability
- Compliance with engineering standards
- System performance and efficiency
Financial analysis
Evaluation of project costs and financial aspects:
- Equipment cost estimation
- Installation and commissioning costs
- Operational considerations
- Budget planning and cost optimization
Analysis balances technical performance and cost efficiency: selection of cost-effective equipment, optimization of electrical schemes, evaluation of alternative solutions, and risk versus cost comparison. The benefit is reliable system performance with optimized investment cost.
Case study: substation equipment selection (110/35 kV)
SS Skopje 1 110/35 kV substation project.
| Parameter | Option A (standard) | Option B (optimized) |
|---|---|---|
| Transformer | 40 MVA | 31.5 MVA |
| Protection scheme | Basic (50/51) | Advanced (50/51 + 87T) |
| Switchgear | Conventional | Compact GIS |
| Estimated cost | €280,000 | €240,000 |
| Reliability | Medium | High |
Analysis: Option B provides better protection and system reliability. The lower transformer rating was optimized based on load analysis. Overall cost is reduced with improved performance.
Decision: selected Option B for an optimal balance between cost and reliability.
Financial breakdown and optimization
Estimated cost structure of the same substation project:
| Cost category | Estimated cost | % of total |
|---|---|---|
| Power transformer | €120,000 | 40% |
| Switchgear | €80,000 | 27% |
| Protection system | €25,000 | 8% |
| Installation & commissioning | €50,000 | 17% |
| Engineering & documentation | €25,000 | 8% |
Equipment sizing was reviewed against real load requirements. The protection scheme was optimized to avoid overdesign. Installation costs were balanced with the project timeline.
Decision: reduced unnecessary investment, maintained required technical performance, and improved cost efficiency of the project.