Practical methods for definition of structural and functional reliability parameters of electric installations

The routine accounts of reliability parameters and parameters of the scheme conditions can be substitute for accounts of reliability parameters only in normal and one representative repair conditions. The account of repair condition parameters is excluded. The measures allow to reduce the accounts volume. The rather reasonable method for accounts of elements damaging of the electrical schemes in view of cascade development of failure through switching devices damaging is offered and realized. The method is based on using a factor of interrelation between damaging of elements and switching devices offered in Tomsk Polytechnic University at the Department of Power Stations. The solving of functional reliability tasks is determined by possibility of unambiguous and exact definition of the probability distribution laws analyzed magnitudes of processes, modes, condition of electric installations as nonrandom functions from casual arguments. The method of intervals boundaries selection of input and output data for parameters definition in normal conditions, conditions of stability, asynchronous regime, short circuit is offered.