基于中心距和样本特征的换流变压器模糊状态评估模型  

Fuzzy State Assessment Model of Converter Transformer Based on Center Distance and Sample Features

作　　者：孙勇[1] 张鹏[1] 皮杰 孙晓瑜 李欣 樊友平[2] SUN Yong;ZHANG Peng;PI Jie;SUN Xiaoyu;LI Xin;FAN Youping(EHV Power Transmission Company Maintenance&Test Center,CSG,Guangzhou 510663,China;School of Electrical Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]中国南方电网超高压输电公司检修试验中心,广州510663 [2]武汉大学电气工程学院,武汉430072

出　　处：《高压电器》2019年第12期90-97,共8页High Voltage Apparatus

基　　金：南方电网超高压公司科技项目(GY2014-020)~~

摘　　要：换流变压器是高压直流输电工程中的枢纽设备,随着投运年限的增加,其绝缘问题日益突出,对其运行状态进行评估以指导运维工作就显得尤为重要。文中综合分析了换流变压器的结构和工作特性,建立了全面的换流变压器评估指标体系;提出了一种基于模糊层次分析的换流变压器状态评估方法,避免了主观因素影响;以不同时段内换流变压器运维数据样本为基础,建立了多个带有样本特征的换流变压器模糊状态评估模型,通过中心距融合法,得到了基于样本特征的换流变压器综合模糊状态评估模型。本方法以实测数据和运维统计数据为基础,充分体现了换流变结构特点和不同时段内运行特性,具有较高的精度和较广泛的适用范围。Converter transformer is one of the most significant equipment in HVDC transmission project.As its running time goes by,the insulation problem is becoming prominently serious,it is highly necessary to establish the converter transformer state assessment model.With a comprehensive analysis of converter transformer structure and working characteristics,an overall evaluation index system of converter transformer is built.A fuzzy analytic hierarchy process method for converter transformers state assessment is proposed,which averts the impact of subjective factors.Based on the operation and maintenance data of converter transformer in different periods of one year,a number of converter transformer fuzzy condition assessment models,with different sample features,are established.Finally the comprehensive and fuzzy assessment model of converter transformer,based on sample characteristics,is obtained by using the center distance fusion method.Based on the statistical data of operation and maintenance,the method fully reflects the structural features and the operation features of the converter transformer in different periods,which has higher accuracy and wider range of application.

关 键 词：换流变压器 模糊层次分析 样本特征 中心距融合 状态评估 

分 类 号：TM4[电气工程—电器]