期刊文献+

输变电设施电磁环境工频电场强度控制限值安全性分析

The Safety Analysis of Controlling Limit for Electromagnetic Environment of the Power Frequency Electric Field Strength of Power Transmission Facilities
下载PDF
导出
摘要 决定电磁环境影响的两大因素是电磁强度和频率,对应交流输变电设施是工频电场强度和工频(50Hz)。电磁环境对人体健康的影响可分为"生物效应"和"健康影响"。根据国际非电离辐射防护委员会(ICNIRP)《限制时变电场、磁场和电磁场曝露的导则(300GHz以下)》说明,对于工频场的基本限值是感应电流密度,上述两者的分界值为100mA·m^(-2)。为避免"健康影响"的发生,保证安全,规定感应电流密度公众曝露控制限值为2mA·m^(-2),相当于工频电场5kV·m^(-1)曝露强度产生的结果,由此得出其安全系数为50。国家标准《电磁环境控制限值》(GB 8702-2014)规定了更为严格的控制限值为4kV·m^(-1)。由此,安全系数大于50,更具安全性。 The influence of electromagnetic environment was mainly determined by two factors,which were the electromagnetic intensity and frequency. The corresponding factors to the AC power transmission facilities were the electric field intensity and frequency( 50 Hz) of power frequency. The impact of electromagnetic environment on human health could be divided into "biological effects"and"health effects". According to the description of Guidelines for Limiting Exposure to Time-Varying Electric,Magnetic,and Electromagnetic Fields( up to 300 GHz) by the International Commission on Non-Ionizing Radiation Protection( ICNIRP),the basic limit of power frequency of the electric field was induced current density,the cutoff value of the mentioned effects was 100 mA·m^(-2). To avoid the occurrence of the "health effects"and ensure safety,the public exposure controlling limit value of induced current density should be 2 mA·m^(-2),which was equivalent to the result produced by the 5 kV·m^(-1) exposure intensity of electric field of power frequency,it followed that the safety factor was 50. The national standard Controlling Limits for Electromagnetic Environment provided a more stringent controlling limit value,which was 4 kV·m^(-1). Thus,the value of the safety factor was greater than 50,which was more safety.
出处 《核安全》 2017年第3期24-29,共6页 Nuclear Safety
基金 国家电网公司科技计划项目 项目编号:SGTYHT/14-JS-188
关键词 电磁环境 控制限值 安全性 electromagnetic environment controlling limit safety
  • 相关文献

参考文献4

二级参考文献30

  • 1张学哲,王计朝.耐热导线的新技术[J].农村电气化,2005(2):37-39. 被引量:9
  • 2张云都,易辉,喻剑辉.我国大截面与耐热导线输电技术的现状及展望[J].高电压技术,2005,31(8):24-26. 被引量:30
  • 3DL/T988-2005高压交流架空送电线路、变电站工频电场和磁场测量方法[S],2005.
  • 4世界卫生组织.制定以健康为基础的电磁场标准的框架[M].杨新村,李毅,吕斌,译.北京:中国电力出版社,2008.
  • 5世界卫生组织.WHO“国际电磁场计划”的评估结论与建议[M].杨新村,李毅,译.北京:中国电力出版社,2008.
  • 6World Health Organization. Extremely low frequency fields: environmental health criteria 238 [R]. Geneva, Switzerland: World Health Organization, 2007.
  • 7World Health Organization. Electromagnetic fields and public health: extremely low frequency fields and cancer, fact sheet No 263[R]. Geneva: World Health Organization, 2001.
  • 8World Health Organization. Electromagnetic fields and public health: exposure to extremely low frequency fields, fact sheet No 322[R]. Geneva: World Health Organization, 2007.
  • 9World Health Organization. Establishing a dialogue on risks from electromagnetic fields [M]. Geneva: World Health Organization, 2002.
  • 10World Health Organization. Model legislation for eleetromag netic fields protection [M]. Geneva: World Health Organization, 2006.

共引文献17

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部