izvorni znanstveni rad
Automated control of residential area transmission system for enhancing the security of supplay
Sažetak
Specificity of residential area transmission system is a highly meshed network with combined overhead and cable sections. In center of Zagreb town, control of transmission system is additionally complicated by a special operation of the 110 kV cable link between two power plants important for town’s heat and electricity supply. Cable link has to be opened in order to control the power flows and to reduce short circuit current level. The consequence is a radial supply of two major substations in central Zagreb. The paper presents a solution for Automated Control of Transmission System of central Zagreb that provides closed cable loop and possibility of island operating state of central Zagreb power system according to specific disturbances in bulk power system.
Ključne riječi
security of supply; special protection scheme; automated system control; phasor measurement unit; wide area measurement system