基于区间数灰色模糊综合评判的继电保护维修决策方法研究

摘要

Since the evaluation factors possess grey fuzzy and interval values’ features while the maintenance decision-making of relay protection is performed, an interval numbers grey fuzzy theory based maintenance decision-making method is proposed. On the basis of deciding six principal factors of influencing maintenance decision-making of relay protection, an evaluation system including four maintenance projects is established. Considering the interaction between the grey part and fuzzy part of evaluation factors, this ordered weighted averaging (OWA) operator is used to aggregate the factor values of every project, and the interval grey fuzzy numbers are calculated, the comprehensive evaluation value of every project is worked out, then a more practical maintenance project is preferred. Taking a type RCS-931BM relay protection device and the secondary circuit for example, the optimal maintenance project is selected and the feasibility and validity of the proposed method is validated.%针对继电保护维修决策评判因素具有灰色模糊性和区间取值的特点，提出了一种基于区间数灰色模糊理论的维修决策方法。该方法在确定影响继电保护维修决策的6个主要因素的基础上，建立了包含4个维修方案的评判体系。考虑到评判因素灰部和模部间的相互影响，利用OWA（有序加权平均）算子对各方案的因素值进行集结，并对区间灰色模糊数进行运算，计算出各个方案的综合评判值，进而优选出更贴近实际的维修方案。最后以某RCS-931BM型继电保护装置及其二次回路为例进行维修方案优选，验证了该方法的可行性和有效性。