Multicriteria model of inspection in a power distribution company

In several countries, electrical power distribution companies are in an environment controlled by government regulatory agencies. Various performance indicators were developed with the aim of ensuring the quality of service which is monitored by regulatory agencies. The profitability of companies is directly related to such goals. Two relevant distribution reliability indices that measure the duration and frequency of the average interruption of a system are known as SAIFI and SAIDI. To achieve high levels of performance for these indicators the company should engage on good maintenance planning. The contribution of this paper consists of proposing a multicriteria model in order to define strategies of inspection intervals that will meet three objectives, namely to minimize the number of experiences a customer has of sustained interruption over a predefined period of time, the length of an interruption, and the cost to the system. A case study is carried out to evaluate and apply the performance of the decision model based on data from a Brazilian power distribution company.