500kV麻黃線電磁環(huán)境影響計(jì)算分析

電子機(jī)電論文編號(hào):JD612  論文字?jǐn)?shù):25483,頁(yè)數(shù):48

目  錄
摘要  I
Abstract  II
1 緒論  1
1.1 我國(guó)高壓輸變電工程的發(fā)展   1
1.2電磁環(huán)境問(wèn)題  2
1.3 國(guó)內(nèi)外現(xiàn)狀及水平  5
1.3開展的研究工作  5
2 輸變電工程的工頻電場(chǎng)  6
2.1高壓輸變電工程的工頻電場(chǎng)的限值  6
2.2工頻電場(chǎng)計(jì)算方法比較  9
2.3工頻電場(chǎng)的計(jì)算  12
3 輸電線路的工頻磁場(chǎng)  16
3.1 高壓輸電線下方空間工頻磁場(chǎng)的理論計(jì)算  16
3.2 工頻磁場(chǎng)二維計(jì)算方法  17
3.3工頻磁場(chǎng)的三維計(jì)算方法  18
4 無(wú)線電干擾及可聽噪聲  22
4.1架空輸電線路的電暈現(xiàn)象  22
4.2 架空輸電線路的無(wú)線電干擾  24
4.3 可聽噪聲  26
5 輸電線路電磁環(huán)境的計(jì)算及其仿真   30
5.1 輸電線路的工程概況  30
5.2 工程計(jì)算  32
5.3 輸電線路電磁環(huán)境仿真  36
6 結(jié)論  42
參考文獻(xiàn)  43
致謝  45

摘  要

隨著全球經(jīng)濟(jì)的不斷發(fā)展和民眾環(huán)境意識(shí)的增強(qiáng)，輸電工程的電磁環(huán)境問(wèn)題越來(lái)越受到人們的關(guān)注。同時(shí)，電壓等級(jí)發(fā)展到了特高壓階段，電磁環(huán)境已經(jīng)成為決定輸電線路結(jié)構(gòu)、影響建設(shè)費(fèi)用等的重要因素。本文就500kV麻黃線電磁環(huán)境的影響進(jìn)行分析計(jì)算。
輸電線路的電磁環(huán)境參數(shù)主要包括工頻電場(chǎng)、工頻磁場(chǎng)、無(wú)線電干擾和可聽噪聲四個(gè)方面。本文利用加拿大SES公司出品的CDEGS軟件包對(duì)交流超高壓以及特高壓輸電線路就這四個(gè)方面進(jìn)行了詳細(xì)的仿真研究。針對(duì)每個(gè)電磁環(huán)境參數(shù)，分別介紹了其理論計(jì)算方法、主要影響因素、降低措施以及相關(guān)標(biāo)準(zhǔn)，以保證輸電線路的電磁環(huán)境影響滿足規(guī)程要求。

關(guān)鍵詞：高壓輸電線路；工頻電磁場(chǎng)；電暈；無(wú)電線干擾；可聽噪聲

Abstract

With the global economic development and people's increasing environ- ment awareness, the electromagnetic environmental problem caused by power transmission is paid more and more attention. At the same time, as the voltage rating turn into UHV level, electromagnetic environment has become the critical factor which determines the power tran smission line's structure and the constructing cost. This article on the 500kV line Mahuang electro- magnetic analysis of the environmental impact of computing.
The electromagnetic parameter of power transmission include: power frequencyelectrical field power frequency magnetic field, radio inference (RI) and audible noise (AN). With Canadian SES's CDEGS software, this paper makes detail simulation research on the four electromagnetic parameter of AC EHVand UHV transmission line. This paper introduces theoretical calculation method, main affectedfactor, mitigation technology and  their  standards for each electromagnetic environment parameter, transmission lines to ensure that the impact of the electromagnetic environment to meet the order require- ments.

Key words：High Voltage transmission lines；power frequency electromagnetic field corona；radio inference (RI)；audible noise (AN)