基于实际气体模型的油浸式变压器爆炸应力分布研究  

Study on Stress Distribution of Oil-immersed Transformer Explosion Based on Actual Gas Model

作　　者：姜岚[1,2] 陈云桥 王爽 刘任[1] 程若恒[1] JIANG Lan;CHEN Yunqiao;WANG Shuang;LIU Ren;CHENG Ruoheng(College of Electrical and New Energy,China Three Gorges University,Yichang 443000,China;Hubei Transmission Line Engineering Technology Research Center,Yichang 443000,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443000 [2]湖北省输电线路工程技术研究中心,湖北宜昌443000

出　　处：《变压器》2024年第1期29-34,共6页Transformer

基　　金：电力系统及大型发电设备安全控制与仿真国家重点实验室开放基金(SKLD21KM11)。

摘　　要：为了揭示变压器爆炸瞬间应力在变压器油中的传播过程以及变压器油箱变形的影响因素,本文采用数值计算方法,考虑实际气体对仿真结果的影响,引入范德华方程,从变压器油中气体类型、电弧放电位置两方面对变压器油箱的应力分布规律进行研究。以某110kV通用型变压器为例进行分析,结果表明:气体类型是影响油箱应力大小的重要因素,爆炸分析应采用实际气体模型;电弧放电位于绕组下端时,油箱应力较大;总体而言,爆炸发生时,变压器箱体底面和端面应力值较大。In order to reveal the transmission process of transformer explosion stress in transformer oil and the influencing factors of transformer tank deformation,this paper adopts numerical calculation method,considers the influence of actual gas on simulation results,and introduces van der Waals equation to study the stress distribution law of transformer tank from two aspects:the type of gas in transformer oil and the position of arc discharge.Taking a general 110kV transformer as an example,the results show that the gas type is an important factor affecting the stress of the tank,and the actual gas model should be used for explosion analysis.When the arc discharge is at the lower end of the winding,the stress of the tank is larger.In general,when the explosion occurs,the stress value of the bottom and end of the transformer box is large.

关 键 词：油浸式变压器 应力传播机制 电弧放电 应力分布 实际气体 范德华方程 气体类型 

分 类 号：TM411[电气工程—电器]