Development df a Cost-Benefit and Risk Based Maintenance Model for Power Transformers

Rosero Zúñiga, Laura Sofía | 2020

This thesis presents a different approach for maintenance evaluation in power transformers. From the evolution of the health condition of a power transformer, and the concepts of cost, risk and benefit associated with it, it can be predicted when the maintenance application is ideal for such transformer. For this, first load and tests historical data of 5 sample power transformers are used to obtain their evolution of health condition and failure rate in time. To evaluate the maintenance effects, maintenance schemes previously proposed in the literature are applied. Finally, the conditions for evaluating the risk model and the cost-benefit model are proposed, through the evolution of health condition and the current remuneration plan for power transformers in Colombia. From this model it will be obtained the moments in which applying maintenance in the transformer represent the greatest benefit to the operator.