End User
Scottish and Southern Electricity Networks
Project Title
Replacement of 33/11kV Primary Transformers at Down Grange Substation
Year
2019/20
Project Scope
Replacement of existing 33/11kV 30MVA transformers. The protection scope covers Stage 1 concept design to develop a high-level P&C concept as defined in the Technical Report (TR) and Stage 2 design, creating full detailed designs drawings as agreed in Stage 1 design scope.
Our Scope
- Site visits and data collection, prepare protection notes, battery assessment, review existing settings and protection scheme
- Main Connections Protection drawings and AC & DC detailed design schematics – Red & Green in Stage-by-Stage form
- Detailed design of transformer AVC scheme and settings
- Preparation IED diagram – Red & Green in Stage-by-Stage form
- Checking of transformer order schedules, specify requirements for loose materials and review manufacturers drawings
- Perform settings calculations, grading studies, provide associated fault study justifications and recommend new settings
- Answering P&C technical based queries within the scope of Stage 1 and Stage 2 and management of Design Review Log
Our Key Attributes
- Modifications to PSL logic files to include Auto Isolation with Fault Thrower scheme
