A Calculation Method of Transformer Fault BPA Based on Spatial Interpolation and IEC60599-Reference-Cited by-同舟云学术

A Calculation Method of Transformer Fault BPA Based on Spatial Interpolation and IEC60599

Published:2014-09 Issue: Volume:631-632 Page:563-567
ISSN:1662-7482
Container-title:Applied Mechanics and Materials
language:
Short-container-title:AMM

Author:

Zhang Wei Hua¹,Yuan Jin Sha¹,Zhang Tie Feng¹,Yang Hong¹

Affiliation:

1. North China Electric Power University

Abstract

The diagnostic conclusions by IEC60599 gas ratio method cannot be directly applied to DS Evidence Theory for information fusion. In order to solve the problem, this research proposed a calculation method for transformer fault BPA based on spatial interpolation. Firstly, the fault characteristic space defined by IEC60599 gas ratio method was analyzed. Based on the analysis results, the entire fault characteristic space was divided into several rectangular units through spatial discretization. Next, the BPA function of faults in each unit was formulated by 8-node hexahedral unit interpolation. In this way, the continuous BPA function of faults in the entire space was obtained. This method not only met the requirements of BPA function but also enabled the numerical reflection of various fault possibilities in the calculation results. Thus, this method extended the application of IEC60599 gas ratio method. With example calculation, the correctness and feasibility of this method in actual engineering projects were verified.

Publisher

Trans Tech Publications, Ltd.

Link

https://www.scientific.net/AMM.631-632.563.pdf

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