WANG Xin1，XV Xi-dong1，JU Jun2，FANG Yu-dong3
（1. College of Electrical Engineering，Zhejiang University，Hangzhou 310027，China；2. Quzhou Power Supply Bureau，Quzhou 324002，China；3. Zhejiang Electric Power Dispatching and Communication Center，Hangzhou 310007，China）
Abstract：Aiming at the problem of subjectivity in current eliminating defects work of relay protection system，the analytic hierarchyprocess（AHP）was introduced and a hierarchy optimization model was established. In view of the characteristics of eliminating defects，themodel was established by setting the optimization of eliminating defects as the goal，impacting factors as the criteria and fault locations asthe alternatives，and six factors were summarized which could influence the order of eliminating defects，fault frequency，detecting time，affected area，etc.. In the factors，the fault frequency and detecting time were calculated with real running data,otherwise the rest factorsdifficult to quantize were divided into different levels and then converted to judgment matrices. The order of the faulty positions sorted bytheir final weights was the optimal result. The results indicate that it could avoid the subjective one-sidedness and improve efficiency ifstaffs detect the positions of this optimized order.
Key words：relay protection；eliminating defects；analytic hierarchy process（AHP）；sort；optimization