基于信息融合的车载式变压器运行信息特征提取系统设计  

Design of Vehicle Transformer Operation Information Feature Extraction System Based on Information Fusion

作　　者：戴迎宏[1,2] 陈威 闫培渊[1,2] 周际 汤国龙[1,2] DAI Ying-hong;CHEN Wei;YAN Pei-yuan;ZHOU Ji;TANG Guo-long(Wuhan NARI Limited Liability Company of State Grid Electronic Power Research Institute,Wuhan 430074;NARI Group Corporation,Nanjing 210000)

机构地区：[1]国网电力科学研究院武汉南瑞有限责任公司,武汉430074 [2]南瑞集团有限责任公司,南京210000

出　　处：《环境技术》2020年第3期126-131,共6页Environmental Technology

摘　　要：变压器作为汽车运行系统的主要设备之一,其安全稳定运行对于车辆安全具有重要意义。设计基于信息融合的车载式变压器运行信息特征提取系统,以信息融合层次为依据设计系统结构,将系统划分为数据层、特征层与决策层。数据层从局部放电监测和油内气体监测两方面采集不同监测点信息并进行信息融合,最大限度上提升信息保持率,校正采集数据误差;特征层基于数据层融合结果,选取D-S证据原理对不同方面的信息进行特征融合,通过概率分配函数、置信函数与似然函数处理不同信息造成的不确定问题,提升信息特征融合的鲁棒性;决策层以专家建议模块为核心,利用推理机将不同方面的信息特征进行加权融合,实现车载式变压器运行信息特征提取。实验结果显示该系统可全面、准确的提取车载式变压器运行信息特征,显著提升车辆运行安全性能。As one of the main equipment of automobile operation system,the safe and stable operation of transformer is of great significance to the safety of vehicle.Based on the information fusion,a vehicle transformer operation information feature extraction system is designed.The system structure is divided into data layer,feature layer and decision layer according to the information fusion level.In the data layer,the information of different monitoring points is collected and fused from PD monitoring and gas monitoring in oil to maximize the information retention rate and correct the error of collected data;in the feature layer,based on the results of data layer fusion,the D-S evidence principle is selected to fuse the information of different aspects,and different information is processed by probability distribution function,confidence function and likelihood function The uncertainty caused by information improves the robustness of information feature fusion;the decisionmaking layer takes the expert suggestion module as the core,uses the inference engine to carry on the weighted fusion of different information features,and realizes the vehicle transformer operation information feature extraction.The experimental results show that the system can extract the operation information characteristics of vehicle transformer comprehensively and accurately,and improve the safety performance of vehicle operation significantly.

关 键 词：信息融合 车载式变压器 运行信息 特征提取 系统设计 D-S证据原理 

分 类 号：TM41[电气工程—电器]