Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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变电站屏蔽网破损对站内电压的影响

来源:电工电气发布时间:2017-11-17 09:17 浏览次数:4
变电站屏蔽网破损对站内电压的影响
 
吴昊,沈志祺,安帅
(国网上海市电力公司市北供电公司,上海 200072)
 
    摘 要:屏蔽网可以抑制变电站内感应电压,保护站内二次设备的运行安全。为研究屏蔽网破损产生的影响,利用有限元建模研究屏蔽网破损位置和破损大小对变电站感应电压的影响。经过模型建立并计算,仿真结果表明:与变电站侧面屏蔽网破损相比,顶部屏蔽网有破损时,变电站内平均感应电压更大;变电站顶部中央的屏蔽网破损对变电站内感应电压影响最大;顶部破损越大,站内平均感应电压越大;距离缺失的屏蔽网越近,感应电压越高。
    关键词:变电站;屏蔽网;有限元分析;感应电压
    中图分类号:TM631     文献标识码:B     文章编号:1007-3175(2017)11-0022-03
 
Influence of Broken Shielded Network on Instation Voltage in Substation
 
WU Hao, SHEN Zhi-qi, AN Shuai
(Shibei Power Supply Company of State Grid Shanghai Municipal Electric Power Company, Shanghai 200072, China)
 
    Abstract: The shielded network can inhibit the instation induced voltage in substation and protected the secondary equipment safety operation. In order to research on the impacts caused by the broken shielded network, this paper used the finite element modeling to research the impacts of broken location and size of the shielded network on the induced voltage in substation. Via modeling and calculation, the simulation result shows that compared with the broken shielded network at the side of substation, the broken shielded network would make the average instation induced voltage larger and the top central broken shielded network in substation would have the maximum impact on the instation induced voltage. The larger the top shielded network break is, the larger the average instation induced voltage is. The closer the distance of missing shielded network is, the higher voltage could be induced.
    Key words: substation; shielded network; finite element analysis; induced voltage
 
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