ANALYSIS OF INFLUENCE OF SPARE EQUIPMENT ON RELIABILITY OF FUNCTIONING OF SYSTEMS OF INDUSTRIAL POWER SUPPLY
In the article the analysis of influence of amount of spare equipment and spare instruments and devices (ZIP) is resulted on probability of their sufficientness. It is rotined that time of renewal has exponential distributing and distributing probability can be described the law of Puassona which the optimum amount of spare elements (transformers) can be certain on the basis of, and for determining the optimum amount of ZIP a gradient method can be used.