CIGRE South East European Regional Council 5 th Conference 2025 , Sarajevo, Bosna-Hersek, 4 - 05 Haziran 2025, ss.1-13, (Tam Metin Bildiri)
A plethora of factors have been identified as contributing to the
current deficit in energy production and supply. These include power outages,
transmission line overloads, discrepancies between energy production and
demand, errors in load forecasting, meteorological phenomena, maintenance
issues, cyber-attacks, and terrorist or criminal acts. The unpredictability in
the production of renewable energy sources, aggravating the problem of
consistently matching supply to demand in electricity grids. This
article considers the possibility of a power outage over a large area of the
interconnected electricity transmission system. It also presents how to prevent
such a possibility, as well as the remedial actions to follow to prevent a
catastrophic event such as a power outage. The safety
criteria of the transmission system, the defense plans and the remedial actions
that the system operator should prepare to prevent a major power outage are
described. First, the major power outages that have occurred in recent years
are presented and their causes are examined. In addition, it has been tried to
find similarities between the past power cuts in Turkey and the state of the
European electricity grid. A transmission failure simulation test environment
has been developed to understand the characteristics of realistic transmission
level disturbances propagated to the power system and the effects of such
disturbances on the performance of conventional conservation and restoration
technologies. By using both Black Start units and connection lines from neighboring
system operators, it was ensured that restoration time was minimized by
creating separate islands that would eventually be synchronized. In the study,
a restoration strategy was presented. The proposed strategy has been tested and
validated in the IEEE-39 bus system. The results proved the efficiency of the
restoration strategy, as the total restoration time was sufficiently short
depending on the complexity of each system, and critical loads were primarily
fed.