750 kV同塔双回高压输电线路电磁环境测量
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摘要
高压输电周边的电场强度、磁感应强度测量对环境安全很关键。以咸阳北上召—阡东镇某750 kV同塔双回高压输电线路为研究对象,考察探头距地高度、合金材质房屋和人等因素,对线路周围电磁环境进行测量,并进行了量化分析。结果表明:人对电场强度的影响远大于其他因素;房屋的合金材质对电场具有屏蔽效应,能够减少其对人体的影响;所有因素对磁感应强度影响不大。将测量结果与GB 8702-2014《电磁环境控制限值》中的指标进行比对,电场强度均小于限值,磁感应强度均远小于限值。
The measurement of electric field intensity and magnetic induction intensity around high voltage transmission is very essential to environmental safety.By taking a 750 kV same-tower double-circuit high voltage transmission line in Xianyang North Shangzhao-Qiandong Town as the research object,investigated are the influences from factors including probe height,alloy material housing and human,for the measurement on the electromagnetic environment around the line,and their quantitative analysis are carried out.The results show that:the influence of human on the electric field intensity is far greater than that of other factors;the alloy material of the housing has shielding effect on electric field,which can reduce its influence on the human body;all factors have little influence on the magnetic induction intensity.By comparing the measured results with GB 8702-2014 Controlling limits for electromagnetic environment,the actual electric field intensity is less than the limit value,and the actual magnetic induction intensity is far less than the limit value.
The measurement of electric field intensity and magnetic induction intensity around high voltage transmission is very essential to environmental safety.By taking a 750 kV same-tower double-circuit high voltage transmission line in Xianyang North Shangzhao-Qiandong Town as the research object,investigated are the influences from factors including probe height,alloy material housing and human,for the measurement on the electromagnetic environment around the line,and their quantitative analysis are carried out.The results show that:the influence of human on the electric field intensity is far greater than that of other factors;the alloy material of the housing has shielding effect on electric field,which can reduce its influence on the human body;all factors have little influence on the magnetic induction intensity.By comparing the measured results with GB 8702-2014 Controlling limits for electromagnetic environment,the actual electric field intensity is less than the limit value,and the actual magnetic induction intensity is far less than the limit value.
引文
[1]刘振亚.特高压交流输电工程电磁环境[M].北京:中国电力出版社, 2008.
[2]邬雄,聂定珍,万保权,等.架空送电线路的电磁环境及其污染影响[J].高电压技术, 2000, 26(5):24-26, 77.
[3]张广洲,邬雄,万保权,等.邻近民房的输电线路电磁环境[J].高电压技术, 2009, 35(4):884-888.
[4]万保权,邬雄,张业茂,等. 750kV单回紧凑型输电线路的电磁环境[J].高电压技术, 2009, 35(3):597-600.
[5]于晓峰.高压输电线路和变电站电磁辐射的防护[J].山东工业技术, 2018(18):196.
[6]毛文利,杨新村,李海平.工频电场、磁场及高压输电线路的电场效应[J].浙江电力, 2016, 35(6):26-29, 52.
[7]电磁环境控制限值:GB 8702-2014[S].
[2]邬雄,聂定珍,万保权,等.架空送电线路的电磁环境及其污染影响[J].高电压技术, 2000, 26(5):24-26, 77.
[3]张广洲,邬雄,万保权,等.邻近民房的输电线路电磁环境[J].高电压技术, 2009, 35(4):884-888.
[4]万保权,邬雄,张业茂,等. 750kV单回紧凑型输电线路的电磁环境[J].高电压技术, 2009, 35(3):597-600.
[5]于晓峰.高压输电线路和变电站电磁辐射的防护[J].山东工业技术, 2018(18):196.
[6]毛文利,杨新村,李海平.工频电场、磁场及高压输电线路的电场效应[J].浙江电力, 2016, 35(6):26-29, 52.
[7]电磁环境控制限值:GB 8702-2014[S].