to reduce the copper losses
Power stations on a national grid generate Alternating Current (AC) This power is sometimes referred to as 'Mains' electricity or 'Network' (Netz) electricity. The output from a power station is at a very high voltage. This allows it to be sent down very long wires (Transmission Lines) without loosing voltage, due to the resistance of the wires. AC can easily be changed from high voltage to low (and back again) by a very simple transformer. The reduced voltage for use in a house, is either 230v (Europe) or 110v (USA).
An electricity substation is needed to change the high voltage needed for transmission of power over a distance down to low voltage needed to supply houses etc.
A power station
Electricity is generated at a power station through turbines driven by various energy sources. The electricity is then sent through high-voltage power lines to substations, where the voltage is reduced for distribution to homes and businesses. Transformers help regulate the voltage as the electricity flows along power lines to the end users.
To produce electricity
Electricity
it depends on how big the power station is
The main processes in a power station involve generating electricity from a fuel source, such as coal, natural gas, or nuclear energy. This typically involves heating water to create steam, which turns a turbine to generate electricity. The electricity is then sent through a transformer to increase the voltage for distribution through power lines.
In a coal-fired power station, a boiler burns coal to produce steam. The steam makes a turbine spin. The turbine drives an electricity generator. The electricity from the generator is converted to a higher voltage by a transformer. This higher voltage is to enable transmission over long power lines without losing too much energy. When it comes to reach our homes, it is then converted back into lower voltage by other transformers. Nuclear power stations are similar - instead of a coal-fired boiler, a nuclear reactor creates the steam. Wind turbines use the blades to turn the generator.
The first power station on the Waikato River is named the Horahora Power Station. It was built to provide electricity to the Martha gold mines in Waihi.
Battersea Power Station ceased generating electricity in 1983.
Ireland's largest power station is the Aghada gas-fired station. It is near Midleton in the east of the county of Cork. It is an electricity generating station, owned by the ESB (Electricity Supply Board), Ireland's main electricity provider.