Keskijänniteverkko

Keskijänniteverkko is a Finnish term referring to the medium voltage electricity distribution network. It plays a crucial role in transmitting electricity from high-voltage transmission lines to lower-voltage networks that supply individual consumers. The voltage levels in the keskijänniteverkko typically range from 1 kilovolt (kV) to 36 kV.

This network consists of overhead lines and underground cables that branch out from substations. These substations step down the high voltage from transmission lines to the medium voltage levels suitable for the keskijänniteverkko. From here, further substations or distribution transformers reduce the voltage to the low voltage levels required for homes and businesses.

The design and maintenance of the keskijänniteverkko are the responsibility of regional electricity distribution companies in Finland. These networks are essential for ensuring a reliable and stable electricity supply across the country, especially in areas that are not directly connected to the high-voltage transmission system. Underground cables are increasingly used in urban areas for aesthetic reasons and to improve reliability, while overhead lines are more common in rural and less densely populated regions. The overall efficiency and performance of the electricity grid heavily depend on the effective operation of the keskijänniteverkko.