Connection of generation is a fundamental task for the transmission grid.
We have divided them according to size. See the Index to the right.
Centralized generation
Transmissions from these types of plants, (large hydro and thermal stations) often reach 1000 MW or more. Some of them can be located near the load and can be connected by relatively short AC lines to the grid. But some of them have to be located far from the load, particularly hydro plants and mine-mouth coal plants, and the transmissions often has to be HVDC or AC with FACTS (Flexible AC Transmission Systems).
ABB Case Stories of typical applications:
Dispersed generation
Dispersed Generation as considered here is:
- not centrally planned
- today not centrally dispatched
- usually connected to the distribution network, and
- smaller than 50 - 100 MW
Most dispersed generation (diesel, combined cycle, wind, small hydro etc.) can be located near the load and can be connected by relatively short AC lines to the grid. But there may be cases when it is impossible to get permission for an overhead line or the network conditions call for a controlled transmission where HVDC Light could solve the problem.
ABB Case Stories: