本文關(guān)鍵詞： 棒-板短空氣間隙 流注放電 弱形式 有限元　出處：《太原理工大學》2014年碩士論文　論文類型：學位論文

【摘要】：近年來國家大力建設超高壓輸電線路,關(guān)乎輸電線路安全運行的高電壓絕緣技術(shù)顯得至關(guān)重要。高壓電器設備的絕緣也一直都是研究的難點和重點。在電力行業(yè)中,常采用空氣作為絕緣介質(zhì)。氣體放電理論成因復雜,早期階段流注放電是一個很好的切入點,越來越受到關(guān)注。隨著計算機運算能力的迅速提升,采用數(shù)值仿真方法研究氣體放電過程已逐漸成為熱點。 本文在分析了國內(nèi)外關(guān)于流注放電仿真模型和方法的基礎(chǔ)上,建立了一種基于流體力學的流注放電模型,采用加權(quán)余量法的伽遼金弱形式求解該模型并對仿真結(jié)果做出了分析及驗證。 主要工作如下： (1)了解了國內(nèi)外流注放電數(shù)值仿真的研究現(xiàn)狀及本論文的選題背景和意義。 (2)介紹了如何將氣體放電理論應用到連續(xù)性方程從而建立基于流體力學的流注放電模型,并分析了流注放電過程中相關(guān)參數(shù)的物理意義。 (3)提出了一種流注放電仿真模型,引入加權(quán)余量法的伽遼金弱形式算法求解所建立的流注放電模型,并基于有限元軟件完成了建模和仿真過程,得出并分析了流注放電過程中的微觀參數(shù)及電場分布。 (4)研究了外加電壓極性和棒頭半徑對于棒板10mm空氣間隙流注放電的影響,并做了理論分析。
[Abstract]:In recent years, the construction of EHV transmission lines in our country is very important. The insulation of HV electrical equipment is always the difficulty and key point of the research. In the electric power industry, the insulation of high voltage electrical equipment is very important, and it is very important for the safe operation of EHV transmission lines. Air is often used as insulating medium. The cause of gas discharge theory is complicated, the flow discharge is a good breakthrough point in the early stage, and more and more attention is paid to it. With the rapid development of computer computing ability, Numerical simulation method has been used to study the gas discharge process. On the basis of analyzing the simulation models and methods of streamer discharge at home and abroad, a fluid discharge model based on fluid mechanics is established in this paper. The Galerkin weak form of weighted residual method is used to solve the model and the simulation results are analyzed and verified. The main tasks are as follows:. 1) the research status of numerical simulation of streamer discharge at home and abroad and the background and significance of this thesis are discussed. This paper introduces how to apply the theory of gas discharge to the continuity equation to establish a fluid discharge model based on fluid mechanics, and analyzes the physical significance of the related parameters in the process of flow discharge. A flow discharge simulation model is proposed. The Galerkin weak form algorithm based on weighted residual method is introduced to solve the flow discharge model, and the modeling and simulation process is completed based on the finite element software. The microcosmic parameters and electric field distribution in the process of streamer discharge are obtained and analyzed. (4) the effects of applied voltage polarity and rod head radius on flow discharge in 10mm air gap of rod plate are studied, and theoretical analysis is made.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM723

【參考文獻】

相關(guān)期刊論文 前10條

1 王湘漢;汪l，

本文編號：1510778