Reliability evaluation of thermal power units based on AHP and ELECTRE-III

The security and stable operation of thermal power units plays a very important role in a power system, so the reliability evaluation of thermal power units has become a critical problem. By combining the advantages of the Analytic Hierarchy Process (AHP) and the Elimination et Choice Translating Reality (ELECTRE) III, a reliability evaluation method for thermal power units based on AHP and ELECTRE-III is put forward. A new method of proposed “net” procedure is presented to rank these scheme with valued outranking relation. The advantages and disadvantages of the scheme are expressed from the harmony index and the discordance index, which constitute valued outranking relation by ELECTRE III and weights of criteria are determined by AHP. This method is clear and easily to be accepted by the decision maker with the person's actual decision thinking of human being. And the results of the example analysis show that the method is feasible for the reliability evaluation of thermal power units.