Number and localisation of MV/LV transformer substations: Difference between revisions
From Electrical Installation Guide
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Main characteristics to consider to determine the transformation substations: | Main characteristics to consider to determine the transformation substations: | ||
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! colspan="3" | Configuration | |||
|- | |- | ||
! Characteristic to consider | |||
! 1 substation with<br>N transformers | |||
! N substations<br>N transformers (identical substations) | |||
! N substations<br>M transformers (different powers) | |||
|- | |- | ||
| Building configuration | |||
| < 25000m² | |||
| ≥ 25000m²<br>1 building with several floors | |||
| ≥ 25000m²<br>several buildings | |||
|- | |- | ||
| Power demand | | Power demand | ||
Revision as of 13:10, 15 November 2013
Main characteristics to consider to determine the transformation substations:
- Surface area of building or site
- Power demand, (to be compared with standardized transformer power),
- Load distribution
The preferred basic configuration comprises one single substation.Certain factors contribute to increasing the number of substations (>1):
- A large surface area (> 25000m²),
- The site configuration: several buildings,
- Total power > 2500kVA,
- Sensitivity to interruption: need for redundancy in the case of a fire.
| Configuration | |||
|---|---|---|---|
| Characteristic to consider | 1 substation with N transformers |
N substations N transformers (identical substations) |
N substations M transformers (different powers) |
| Building configuration | < 25000m² | ≥ 25000m² 1 building with several floors |
≥ 25000m² several buildings |
| Power demand | < 2500kVA | ≥ 2500kVA | ≥ 2500kVA |
| Load distribution | Localized loads | Uniform distribution | Medium density |
Fig. D11: Typical characteristics of the different configurations
ru:Число и расстановка трансформаторных подстанций высокого/низкого напряжения zh:中压/低压变电站的数量和分布
