Electrical connections for power stations

The division and arrangement of units and the system of electrical connections in a power station have much to do with the cost and successful operation of the plant. Conditions vary to an extent which prohibits the use of standard arrangements, but certain general principles are applicable to all layouts. For the purpose of this paper the factors to be considered are generators, transformers, lines, bus-bars, and switches with their relays. The kind of load, number of stations on system, lines in parallel, number of lines, size of generator and transformer units, and local conditions, govern the power house arrangements.