摘要
固体颗粒物染污是导致绝缘油品质劣化的重要原因之一。杂质相颗粒的理化属性和浓度分布会从微观界面效应、电场分布等方面对绝缘油的电气性能构成影响。该文从近年来国内外学者所发表的有关流-固两相流和含杂质油流基本特性领域研究成果出发,分析油中杂质相颗粒的来源、受力、流-固耦合模型、运动特性观测及油品电气特性等方面的研究进展和存在的问题。从理论模型、数值模拟和实验观测三个角度出发,提炼出流、电、热多物理场耦合作用下含杂质油流领域研究动向和关键问题,以期为建立多场耦合和多杂质物相下油-流介质的综合动力学方程,揭示固相影响作用和过程机理,以及为染污绝缘油研究工作提供借鉴。
Solid particulate contamination is one of the important reasons for the deterioration of insulating oil quality.The physical and chemical properties and concentration distribution of impurity particles affect the electrical characteristics of insulating oil from the aspects of microscopic interface effect and electric field distribution.Based on the recent researches on the basic characteristics of fluid-solid two-phase flow and impurity-containing oil flow,this paper analyzes the research progress and existing problems on the source,force,fluid-solid coupling model,motion characteristics observation of the impurity particles and electrical characteristics of oil.From the perspectives of theoretical model,numerical simulation and experimental observation,the research trends and key issues in the field of oil containing impurities under the coupling of multi-physical fields of flow,electricity and heat are extracted in this paper.It is hoped to provide reference for establishing the comprehensive dynamic equation of oil flow medium in multi-physical field coupling and multi-impurity phases,revealing the effect of solid phase and process mechanism,and advancing the research of contaminated insulating oil.
作者
贺博
王鹏
吴锴
胡小博
杨冬
He Bo;Wang Peng;Wu Kai;Hu Xiaobo;Yang Dong(State Key Laboratory of Electrical Insulation and Power Equipment Xi′an Jiaotong University,Xi′an 710049 China;Xian XD Transformer Co.Ltd,Xi′an 710049 China;State Key Laboratory of Multiphase Flow in Power Engineering Xi′an Jiaotong University,Xi′an 710049 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2022年第1期266-282,共17页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51977170)。
关键词
染污绝缘油
颗粒受力分析
流-固耦合模型
运动特性
电气特性
Contaminated insulating oil
force analysis of particles
fluid-solid coupling model
motion characteristics
electrical characteristics
作者简介
贺博,男,1976年生,教授,博士生导师,研究方向为高电压与绝缘技术领域的基础理论、电力设备绝缘性能分析与绝缘结构优化设计、复合电介质形态结构与性能关系等。E-mail:hebo@xjtu.edu.cn;通信作者:王鹏,男,1990年生,博士研究生,研究方向为绝缘油电气特性分析及多物理场耦合环境的液固两相流等。E-mail:wangpeng123@stu.xjtu.edu.cn。
