In the power system's control hierarchical structures are used which provide high security of operation. These structures are employed both for operative management and for regulation (primary, secondary, and tertiary) of the processes going in power systems. In turn, to stop a cascade-wise emergency process there exist protections against damage of elements along with systems for liquidation of local disturbances while absent protection supertructures to complete the hierarchical protection pattern. The need for such supertructures is dictated by regularly occurring blackouts in power systems. In the book it is shown that the main cause of blackouts is the grid overload, which, according to the authors, can effectively be eliminated by short-term sectioning of a power system. Such sectioning arrests the spread of the cascade-wise emergency process and activates the mechanism of a power system's self-restoration. To achieve this, a centralised anti-emergency superstructure should be built, with only minor improvement of local protection systems needed; after that a blackout will be liquidated within about 100 seconds − without staff participation and unnoticed by the majority of consumers.