Reliability Recursive Principle and Recurrence Algorithm for Multi-voltage Grade Network

Recursive principle is applied in the reliability evaluation of multi-voltage grade network which is accomplished as a repairable system.Combined with Markov theory and considering alternative supply capacity limitation,the impacts of each voltage level on lower load is recursive and layering solved and the reliability of terminal load is accurately calculated.Recursive principle is mathematically turned to the efficient and small occupied non-recursive principle,which can calculate recurrently.This method can solve the ill-consideration for the reliability of multilevel source in the reliability evaluation of multi-voltage grade network,and also can calculate the reliability accurately and comprehensively.A real example shows the availability of this method.