Improving Management Of Maintenance And Repair For Transmission And Distribution Equipment To Ensure Operational Reliability

Maintenance and repair(M&R) of power system equipment is one of the crucial methods for solving problems of reliable power supplying.Implementing the maintenance and repair strategy according to the technical condition of equipment it is necessary to solve a number of tasks,including prioritizing of preventive measures order and determining optimal time of their periodic.The paper points out two specific aspects:1)development of an adequate reliability simulation model to optimize the operational factors of electric network equipment;2)advantages of the proposed M&R optimization methodology in the operational process of real distribution system.Developed probabilistic mathematical model of M&R allows determining criteria for obtaining the optimal solution according to the results of numerical calculations procedure.Described mathematical model is based on the theory of controlled random processes.The real equipment operational process with probabilistic characteristics of failures and recovers is represented as the random process.This mathematical method allows describing the "ageing" systems.The "ageing" systems include all types of electrical networks equipment.The main advantages of the model are the possibility of considering all random processes for described type of equipment and obtaining the analytical solutions for basic reliability and economical indexes.Based on this,the criterions and strategy for choosing an optimal time intervals of M&R procedures had been formed.The proposed methodology allows to calculate the optimal values of the M&R management parameter for electric network equipment and ensure the efficiency of the operation strategy over a given time interval.Improving the efficiency of M&R of electrical equipment is considered on a real distribution network.