Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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66 kV干式空心電抗器引流雙導(dǎo)線發(fā)熱分析及改造建議

來(lái)源:電工電氣發(fā)布時(shí)間:2021-09-18 09:18 瀏覽次數(shù):494

66 kV干式空心電抗器引流雙導(dǎo)線發(fā)熱分析及改造建議

王海默,倪遠(yuǎn),張星,王斌,趙學(xué)華,趙東森
(國(guó)網(wǎng)寧夏電力有限公司銀川供電公司,寧夏 銀川 750011)
 
    摘 要:對(duì)一起 750 kV 變電站 66 kV 干式空心并聯(lián)電抗器引流雙導(dǎo)線發(fā)熱缺陷進(jìn)行分析,得出導(dǎo)線發(fā)熱原因?yàn)橐麟p導(dǎo)線與間隔棒、雙導(dǎo)線設(shè)備線夾在電抗器磁凈空距離內(nèi)形成了閉合環(huán)路,在電抗器強(qiáng)磁環(huán)境下產(chǎn)生了較大感應(yīng)環(huán)流和渦流,引起局部過(guò)熱。為消除發(fā)熱缺陷,通過(guò)對(duì)比不同抑制措施的可行性與經(jīng)濟(jì)性,提出了采用單導(dǎo)線引流的改造建議,為今后干式空心電抗器的安裝應(yīng)用提供了參考。
    關(guān)鍵詞:干式空心電抗器;引流雙導(dǎo)線;感應(yīng)環(huán)流;發(fā)熱;改造建議
    中圖分類號(hào):TM472     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2021)09-0038-05
 
Heating Analysis and Modification Suggestion on Drainage Double
Conductor of 66 kV Dry-Type Air-Core Reactor
 
WANG Hai-mo, NI Yuan, ZHANG Xing, WANG Bin, ZHAO Xue-hua, ZHAO Dong-sen
(Yinchuan Power Supply Company of State Grid Ningxia Electric Power Co., Ltd, Yinchuan 750011, China)
 
    Abstract: This paper analyzed the heating defect of a 66 kV dry-type air-core shunt reactor in a 750 kV substation. The result showed the reason for overheating: the double-drainage wire, the spacer rod, and the wire clip of the double-wire device in the magnetic clearance distance formed a closed-loop. This closed-loop produced large inductive circulating currents and eddy currents in the strong magnetic environment of the reactor. The large inductive circulating currents and eddy currents could create the overheating problem. Hence, this study proposes a suggestion by comparing the feasibility and economy of different suppression measures. This proposal provides a reference for the installation and application of dry-type air-core reactors in the future.
    Key words: dry-type air-core reactor; double-drainage wire; inductive circulating current; heating; modification suggestion
 
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