jaotussevõrgu

A jaotussevõrgu, or distribution network, is a crucial component of an electrical power system responsible for delivering electricity from the transmission system to end-users. It operates at lower voltage levels than the transmission network and typically includes substations, power lines, and various protective and control equipment. The primary function of a jaotussevõrgu is to reduce the high voltages transmitted over long distances to safe and usable levels for homes, businesses, and industries.

These networks are characterized by their radial or looped configurations. Radial systems are simpler, with power flowing from a single source along branches. Looped systems offer greater reliability as they provide alternative paths for electricity, allowing for continuous supply even if one section of the network fails. The voltage levels within a jaotussevõrgu can vary, commonly ranging from a few kilovolts (kV) for primary distribution to hundreds of volts for secondary distribution to individual consumers.

Key elements of a jaotussevõrgu include distribution substations, which step down transmission voltages, and distribution lines, which can be overhead or underground. Protective devices such as circuit breakers and fuses are essential for isolating faults and preventing damage. The efficient and reliable operation of the jaotussevõrgu is vital for the continuity of electricity supply and the functioning of modern society.