电力系统保护与控制Issue(7)：115-121,7.
基于改良三比值法的变压器故障基本信度分配计算方法
A caculation method for transformer fault basic probability assignment based on improved three-ratio method
摘要
Abstract
The diagnostic conclusions by three-ratio method cannot be directly applied to the construction of the basic probability assignment (BPA) function.In order to solve the problem, this paper proposes a calculation method for transformer fault BPA based on spatial interpolation.According to the basic principle of finite element method, the fault characteristic distribution of three-ratio codes in the spatial geometry is analyzed and the entire fault characteristic space is discretized, and finally the continuous BPA function of faults in the entire space is obtained using spatial interpolation. The method meets the requirements of BPA function, and its calculating result quantitatively reflects the probability of various faults.With examples calculation, the correctness and feasibility of this method in actual engineering projects are verified. This work is supported by National Natural Science Foundation of China (No. 61302163) and the Fundamental Research Funds for the Central Universities (No. 2014MS104).关键词
基本信度分配/变压器/故障诊断/空间插值/三比值法Key words
basic probability assignment (BPA)/transformer/fault diagnosis/spatial interpolation/three-ratio method分类
信息技术与安全科学引用本文复制引用
张卫华,苑津莎,王杉,张珂..基于改良三比值法的变压器故障基本信度分配计算方法[J].电力系统保护与控制,2015,(7):115-121,7.基金项目
国家自然科学基金项目(61302163)；中央高校基本科研业务费专项资金(2014MS104) （61302163）
