Inter-grid tie / Rapid City HVDC back-to-back converter station
| electrical converter station, fenced area
USA /
South Dakota /
Green Valley /
World
/ USA
/ South Dakota
/ Green Valley
World / United States / South Dakota
electrical converter station, fenced area
This is one of several ties between the "eastern" and "western" electrical grids. Power coming in from either end is converted to high-voltage DC which then continues to the other side where it is converted back to AC and continues to the other grid. These AC-DC-AC ties are necessary due to the slight frequency difference between the two grids. Any attempt to directly connect the two grids will result in the generators between the two groups fighting to pull each other into phase (hunting) with noticeable surges and sags in the voltage.
Nearby cities:
Coordinates: 44°0'39"N 103°9'53"W
- New Underwood Electrical Substation 28 km
- Outdoor switchgear 248 km
- Switchyard of David A. Hamil HVDC back-to-back station 252 km
- Stegall Switching Station 255 km
- Electrical substation 288 km
- Electrical substation 314 km
- Electrical Substation 317 km
- Electrical substation 341 km
- Electrical Substation 352 km
- Miracle Mile Electrical Substation 359 km
- Rapid City Solid Waste 3.5 km
- Green Valley, South Dakota 4.2 km
- Rapid City Elks Golf Course 4.3 km
- Rapid Valley, South Dakota 6.1 km
- Hart Ranch Golf Course 7.1 km
- Rapid City Regional Airport 9 km
- Cowboy Hill 11 km
- Meadowbrook Golf Course 11 km
- National Guard Training Camp 13 km
- Custer State Park 38 km
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