本文選題：雷擊 + 同塔多回線路�。� 參考：《華北電力大學(xué)》2015年碩士論文

【摘要】：本文緊密結(jié)合浙江省電力公司所轄輸電線路實(shí)際情況,從防雷基礎(chǔ)理論方面和工程應(yīng)用實(shí)踐方面開展同塔多回路架空線路雷擊同跳模型研究與防雷技術(shù)設(shè)計(jì)。本文研究了線路雷擊分析方法,建立了適用于輸電線路繞擊過程分析的雷電先導(dǎo)分形模型,同時(shí)提出了一種計(jì)算分析復(fù)雜地形下輸電線路繞擊防雷性能的方法；本文對同塔多回線路雷擊同跳模型進(jìn)行研究,根據(jù)同塔多回線路不同回路各相絕緣子先導(dǎo)發(fā)展機(jī)理及其與絕緣擊穿間隙之間的關(guān)系,在電磁暫態(tài)計(jì)算分析平臺上實(shí)現(xiàn)同塔多回線路雷擊同時(shí)閃絡(luò)發(fā)展過程；利用110kV和220kV復(fù)合絕緣子并聯(lián)間隙電弧的運(yùn)動(dòng)特性仿真,本文研究輸電線路防雷措施；還對新建和已投運(yùn)同塔多回線路的防雷配置提出了建議。主要研究雷電活動(dòng)數(shù)據(jù)統(tǒng)計(jì)方法、雷電通道發(fā)展機(jī)理、雷電流入地散流優(yōu)化及雷擊同跳機(jī)理和雷擊同跳特征等基礎(chǔ)理論；基于典型線路的實(shí)際運(yùn)行情況研究同塔多回輸電線路耐雷水平影響因素,分析雷電流在桿塔中的傳播和絕緣子擊穿過程,結(jié)合同塔多回輸電線路差異化防雷擊同跳技術(shù)原理和雷擊閃絡(luò)風(fēng)險(xiǎn)等級大小,根據(jù)不同防雷措施的綜合防護(hù)效果研究制定了典型線路的差異化防防雷擊同跳技術(shù)方案。本文緊密結(jié)合浙江省電力公司所轄輸電線路實(shí)際運(yùn)行情況,從防雷基礎(chǔ)理論方面和工程應(yīng)用實(shí)踐方面開展同塔多回架空輸電線路同跳模型研究與防雷技術(shù)設(shè)計(jì)研究。
[Abstract]:Based on the actual situation of transmission lines under the jurisdiction of Zhejiang Electric Power Company, this paper carries out the research and design of lightning protection technology from the aspects of basic lightning protection theory and engineering application. In this paper, the lightning strike analysis method of transmission line is studied, and the fractal model of lightning forerunner is established, which is suitable for the analysis of transmission line around failure process. At the same time, a method to calculate and analyze the lightning protection performance of transmission line under complex terrain is put forward. In this paper, the lightning stroke and jump model of the same tower multicircuit line is studied. According to the development mechanism of the different phase insulators in different circuits of the same tower multicircuit line and the relationship between the lead of the insulator and the insulation breakdown gap, The development process of lightning strike and flashover of multi-circuit transmission lines in the same tower is realized on the platform of electromagnetic transient calculation and analysis, and the lightning protection measures of transmission lines are studied by using the simulation of the parallel gap arc motion characteristics of 110kV and 220kV composite insulators. Some suggestions on the lightning protection configuration of the newly built and operated multi-circuit lines of the same tower are also put forward. The basic theories such as the statistical method of lightning activity data, the development mechanism of lightning channel, the optimization of lightning current dispersion, the mechanism of lightning stroke and the characteristics of lightning stroke are studied. Based on the actual operation of typical transmission lines, the factors affecting the lightning resistance of multi-circuit transmission lines with the same tower are studied, and the propagation of lightning current in the tower and the process of insulator breakdown are analyzed. Combined with the principle of differential lightning protection and the risk level of lightning flashover of multi-circuit transmission lines of the same tower, according to the comprehensive protective effect of different lightning protection measures, a typical technical scheme of line differential lightning protection and simultaneous jump protection is established. Based on the actual operation of transmission lines under the jurisdiction of Zhejiang Electric Power Company, this paper develops the research on the same jump model and lightning protection technology of multi-circuit overhead transmission lines in the same tower from the aspects of basic lightning protection theory and engineering application.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM75;TM863

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本文編號：2093513