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特高压直流换流站阀厅屏蔽效能及设计要求 被引量:8

Shielding Effectiveness and Design Requirement of UHVDC Converter Valve Hall
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摘要 为了研究特高压直流换流站阀厅的屏蔽效能和设计要求,提出了频率在150 kHz~80 MHz范围内、电场强度≤1 V/m射频干扰强度(120 dB,基准1μV/m对应0 dB)作为邻近换流阀厅外侧的控制指标。结合换流站现场实测数据进行相应的分析及计算,提出阀厅屏蔽设计要求:(1)屏蔽效能目标值取≥20 dB;(2)阀厅屏蔽一般采用直径6 mm、网孔面积200 mm×200 mm的钢筋网;(3)如果墙壁直接采用双层0.6 mm厚镀铝锌压型钢板,每隔30 cm用铆钉连接,两板重合部分宽度>5 cm,则单层板在≤10 MHz范围内的屏蔽效能>40 dB,也可满足要求。 The RF inference no more than 1 V/m caused by the electromagnetic field in the frequency scope of 150 kHz to 80 MHz is considered as the limit specification outside the valve hall.According to the analysis and calculation of the measurement in converter stations,the design requirements for the shielding of valve hall are given as follows:(1) The value of the shielding effectiveness of the valve hall should be larger than 20 dB.(2) The steel wire mesh of wire diameter 6 mm and the side length 200 mm should be used for the shielding.(3) If the sheets are connected every 30 cm with the rivets and the width of the superposition is larger than 5 cm,the shielding effectiveness of single layer sheet achieves 40 dB when the frequency is smaller than 10 MHz.
出处 《高电压技术》 EI CAS CSCD 北大核心 2010年第2期313-317,共5页 High Voltage Engineering
基金 国家电网公司科技项目(SGSC[2005]137)~~
关键词 特高压直流输电 换流站 阀厅 屏蔽效能 射频干扰 电磁场 UHVDC converter valve hall shielding effectiveness RF inference electromagnetic field
作者简介 聂定珍1961-,女,硕士,高工1982年毕业于上海交通大学电机系,获学士学位;1987年毕业于武汉高压研究所,获硕士学位。长期从事直流输电工程技术咨询、系统研究及成套设计、过电压与绝缘配合等方面的研究工作,发表论文30多篇,获中国电力建设科学技术成果一等奖、中国电力科学技术奖二等奖等奖项。近期重点研究超/特高压直流输电技术研究及设计 马为民1966-,男,博士(后),总工1988年毕业于武汉水利电力大学电力系,获学士学位,1993年获得博士学位。长期从事直流输电工程技术工作,发表论文百余篇,多次获得中国电力科学技术奖一等奖等奖项。近期重点研究超/特高压直流输电技术研究及设计E—mail:weimin—ma@sgcc.com.cn
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参考文献12

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二级参考文献23

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