学校10/0.4千伏变电站低频磁场的抑制

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Maja Grbić, Aldo Canova, Luca Giaccone, Aleksandar Pavlović, Sergio Grasso
{"title":"学校10/0.4千伏变电站低频磁场的抑制","authors":"Maja Grbić,&nbsp;Aldo Canova,&nbsp;Luca Giaccone,&nbsp;Aleksandar Pavlović,&nbsp;Sergio Grasso","doi":"10.1002/jnm.70015","DOIUrl":null,"url":null,"abstract":"<p>The article is related to mitigation of magnetic field emitted by a 10/0.4 kV substation located in a primary school in Belgrade, Serbia. During the first testing in the classroom located directly above the substation, the measured values of magnetic flux density significantly exceeded the reference level of 40 μT prescribed by Serbian legislation, and it was concluded that the field levels at the transformer rated load could exceed the reference level of 100 μT prescribed by European Council Recommendation 1999/519/EC. For that reason, the 0.4 kV busbars located near the ceiling of the substation were removed and replaced with cables that were placed on the floor of the substation. The testing was repeated and the measured values as well as the values at the rated load were lower than 40 μT. However, above the locations where the cables were connected to the transformer and to the 0.4 kV switchboard, the field levels were still higher than in the rest of the classroom. The focus of this article is to analyze different solutions based on passive shielding for the reduction of magnetic field in these two areas. Seven solutions based on conductive shields with different geometries are analyzed. The substation and the shields are modeled by using appropriate software tools to determine which shield is the most effective. In the case of Solution 7, the lowest field values were obtained. The highest value of magnetic flux density in this case was 6.95 μT at the transformer rated load.</p>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"38 2","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jnm.70015","citationCount":"0","resultStr":"{\"title\":\"Mitigation of Low Frequency Magnetic Field Emitted by 10/0.4 kV Substation in the School\",\"authors\":\"Maja Grbić,&nbsp;Aldo Canova,&nbsp;Luca Giaccone,&nbsp;Aleksandar Pavlović,&nbsp;Sergio Grasso\",\"doi\":\"10.1002/jnm.70015\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The article is related to mitigation of magnetic field emitted by a 10/0.4 kV substation located in a primary school in Belgrade, Serbia. During the first testing in the classroom located directly above the substation, the measured values of magnetic flux density significantly exceeded the reference level of 40 μT prescribed by Serbian legislation, and it was concluded that the field levels at the transformer rated load could exceed the reference level of 100 μT prescribed by European Council Recommendation 1999/519/EC. For that reason, the 0.4 kV busbars located near the ceiling of the substation were removed and replaced with cables that were placed on the floor of the substation. The testing was repeated and the measured values as well as the values at the rated load were lower than 40 μT. However, above the locations where the cables were connected to the transformer and to the 0.4 kV switchboard, the field levels were still higher than in the rest of the classroom. The focus of this article is to analyze different solutions based on passive shielding for the reduction of magnetic field in these two areas. Seven solutions based on conductive shields with different geometries are analyzed. The substation and the shields are modeled by using appropriate software tools to determine which shield is the most effective. In the case of Solution 7, the lowest field values were obtained. The highest value of magnetic flux density in this case was 6.95 μT at the transformer rated load.</p>\",\"PeriodicalId\":50300,\"journal\":{\"name\":\"International Journal of Numerical Modelling-Electronic Networks Devices and Fields\",\"volume\":\"38 2\",\"pages\":\"\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2025-03-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jnm.70015\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Numerical Modelling-Electronic Networks Devices and Fields\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jnm.70015\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jnm.70015","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

摘要

这篇文章是关于塞尔维亚贝尔格莱德一所小学内的10/0.4千伏变电站发出的磁场的减缓。在变电站正上方教室进行的第一次测试中,磁通密度测量值明显超过塞尔维亚立法规定的40 μT的参考水平,并得出结论,变压器额定负荷下的磁场水平可超过欧洲理事会建议1999/519/EC规定的100 μT的参考水平。因此,位于变电站天花板附近的0.4 kV母线被拆除,取而代之的是放置在变电站地板上的电缆。重复试验,测量值和额定负荷下的值均低于40 μT。然而,在电缆连接到变压器和0.4 kV配电板的位置上方,电场水平仍然高于教室其他地方。本文的重点是分析在这两个领域中基于无源屏蔽的不同磁场减小方案。分析了基于不同几何形状导电屏蔽的七种解决方案。使用适当的软件工具对变电站和屏蔽进行建模,以确定哪种屏蔽最有效。在解决方案7的情况下,获得了最低的字段值。在变压器额定负荷下,磁通密度最大值为6.95 μT。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Mitigation of Low Frequency Magnetic Field Emitted by 10/0.4 kV Substation in the School

Mitigation of Low Frequency Magnetic Field Emitted by 10/0.4 kV Substation in the School

The article is related to mitigation of magnetic field emitted by a 10/0.4 kV substation located in a primary school in Belgrade, Serbia. During the first testing in the classroom located directly above the substation, the measured values of magnetic flux density significantly exceeded the reference level of 40 μT prescribed by Serbian legislation, and it was concluded that the field levels at the transformer rated load could exceed the reference level of 100 μT prescribed by European Council Recommendation 1999/519/EC. For that reason, the 0.4 kV busbars located near the ceiling of the substation were removed and replaced with cables that were placed on the floor of the substation. The testing was repeated and the measured values as well as the values at the rated load were lower than 40 μT. However, above the locations where the cables were connected to the transformer and to the 0.4 kV switchboard, the field levels were still higher than in the rest of the classroom. The focus of this article is to analyze different solutions based on passive shielding for the reduction of magnetic field in these two areas. Seven solutions based on conductive shields with different geometries are analyzed. The substation and the shields are modeled by using appropriate software tools to determine which shield is the most effective. In the case of Solution 7, the lowest field values were obtained. The highest value of magnetic flux density in this case was 6.95 μT at the transformer rated load.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
4.60
自引率
6.20%
发文量
101
审稿时长
>12 weeks
期刊介绍: Prediction through modelling forms the basis of engineering design. The computational power at the fingertips of the professional engineer is increasing enormously and techniques for computer simulation are changing rapidly. Engineers need models which relate to their design area and which are adaptable to new design concepts. They also need efficient and friendly ways of presenting, viewing and transmitting the data associated with their models. The International Journal of Numerical Modelling: Electronic Networks, Devices and Fields provides a communication vehicle for numerical modelling methods and data preparation methods associated with electrical and electronic circuits and fields. It concentrates on numerical modelling rather than abstract numerical mathematics. Contributions on numerical modelling will cover the entire subject of electrical and electronic engineering. They will range from electrical distribution networks to integrated circuits on VLSI design, and from static electric and magnetic fields through microwaves to optical design. They will also include the use of electrical networks as a modelling medium.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信