LTDS Table 2b Three-winding Transformer
Dataset description:
The Long-Term Development Statement (LTDS) provides essential information to assist current and prospective users of National Grid Electricity Distribution’s (NGED) network in identifying...
Source: LTDS Tabular Model
Data Dictionary
| Title | Type | Label | Description | Example |
|---|---|---|---|---|
| Licence | text | Licence area for data |
EMIDS | |
| GSP Group | text | Drakelow 132kV | ||
| Node 1 | text | Busbar code at the higher voltage end of the transformer |
BURT1_113A | |
| Operating Voltage 1 | numeric | kV | 132 | |
| Node 2 | text | Busbar code at one of the two Lower voltage ends of the transformer |
BURT5_#1T0A | |
| Operating Voltage 2 | numeric | kV | 11 | |
| Node 3 | text | Busbar code at one of the two Lower voltage ends of the transformer |
BURT5_#1T0B | |
| Operating Voltage 3 | numeric | kV | 11 | |
| Status | text | New, Removed, Updated, or Unchanged |
Updated | |
| Vector Group | text | Transformer vector group |
YNyn0yn0 | |
| R1 | numeric | % on 100MVA Base | Positive Sequence Resistance |
1.5331 |
| X1 HV-LV | numeric | % on 100MVA Base | Positive Sequence Reactance |
90.887 |
| X1 LV-Tertiary | numeric | % on 100MVA Base | Positive Sequence Reactance |
62.366 |
| X1 HV-Tertiary | numeric | % on 100MVA Base | Positive Sequence Reactance |
90.053 |
| X0 HV-LV | numeric | % on 100MVA Base | Zero Sequence Reactance |
1003.562 |
| X0 LV-Tertiary | numeric | % on 100MVA Base | Zero Sequence Reactance |
1066.604 |
| X0 HV-Tertiary | numeric | % on 100MVA Base | Zero Sequence Reactance |
1005.86 |
| Min Tap | numeric | % | Minimum Tap Range |
-20 |
| Max Tap | numeric | % | Maximum Tap Range |
10 |
| Nominal Rating | numeric | MVA | Nominal Rating of the transformer |
60 |
| Emergency Rating | numeric | MVA | Forced / Emergency Rating of the transformer |
78 |
| Reverse Power Capability | text | MVA where Numeric | Full, Partial or MVA |
|
| Method of Earthing | text | Solid/Resistor |