摘要
针对换流变压器状态评估中的数据匮乏以及各评价指标间的相互中和等问题,提出一种将变权理论和靶心贴近度相结合的换流变压器状态评估模型。首先,考虑到实际案例中指标的动态发展,采用变权模型根据指标量的劣化程度进行变权处理;其次,为了达到降低数据需求并能准确评估换流变压器状态的目的,采用靶心贴近度模型确定换流变压器对各个状态等级的贴近度;最后,采用隶属度函数将靶心贴近度转化为隶属度并计算换流变压器最终状态情况。实际案例表明:文中提出的状态评估模型不仅能够有效地评估换流变压器的健康状态而且同样适用于电力变压器,在保证评估准确率的前提下,数据需求小,评估过程简单直接,具有实用价值与参考意义。
In view of such issues as lack of data and the mutual neutralization between evaluation data in the state assessment of converter transformer,a kind of state assessment model of converter transformer combining variable weight theory and bullseye proximity is proposed.Firstly,considering the dynamic development of data in actual cases,the variable weight model is used to perform the variable weight treatment in accordance with the deterioration degree of the index quantity.Secondly,for reducing the data demand and accurately assessing state of the converter transformer,the bullseye proximity model is used to determine the closeness of the converter transformer to each state level.Finally,the membership degree function is used to convert the bullseye proximity degree into the membership degree and calculate the final state of the converter transformer.Actual cases show that the state assessment model proposed in this paper can not only effectively assess the health state of converter transformers but also apply to power transformer.Under the premise of assuring the assessment accuracy,the data volume requirement is small,the assessment process is simple and direct,and it has practical application and reference value.
作者
李博
吐松江·卡日
张紫薇
马小晶
刘智超
朱炜
LI Bo;TUSONGJIANG Kari;ZHANG Ziwei;MA Xiaojing;LIU Zhichao;ZHU Wei(School of Electrical Engineering,Xinjiang University,Urumqi 830049,China;Sichuan Energy Internet Research Institute,Tsinghua University,Chengdu 610213,China)
出处
《高压电器》
CAS
CSCD
北大核心
2024年第6期114-120,128,共8页
High Voltage Apparatus
基金
新疆维吾尔自治区自然科学基金面上项目资助(2022D01C35)
国家自然科学基金项目资助(52067021,52207165)。
关键词
换流变压器
状态评估
变权理论
三角模糊层次分析法
靶心贴近度
converter transformer
state assessment
contingency theory
triangle fuzzy hierarchy approach
proximity of target center
