The paper provides definitions of survivability, classification of cascade accidents that occur with erroneous actions of personnel and low reliability of automatic devices, survivability indicators: the probability of occurrence of cascade accidents, the average duration and average depth of voltage failures. The reliability function of personnel whose management quality is one of the factors determining the survivability of power transmission systems is given.
Keywords: cascade accidents, survivability, failure, automatic activation of the reserve, operational dispatch control, short circuits, electric power system, probability of occurrence of cascade accidents.
