高压交流输电线路电场短期生态效应研究

Research on Short-term Ecological Effect of Electric Field under HV AC Transmission Line

为研究高压交流输电线路电场短期生态效应,对其工频电场特性、短期生态效应及改善措施进行分析,并建立模型,对电场中人体感应电流及人体内部电场强度进行了计算。结果表明高压交流输电线路产生的工频电场强度为4×10~3V/m时,通过人体脚部产生的总感应电流为60μA,远低于人体伤害电流6×10~3～9×10~3μA,人体不会出现刺痛感和不舒服的感觉;人体内部产生的电场强度为0.176×10^(-3)V/m,远低于外加电场强度4×10~3V/m,人体内部产生的电场强度对外加电场强度而言是及其微弱的。

To study the short-term ecological effect of electric field under HV AC transmission line, the characteristics of its power frequency electric field and ecological effect as well as improvement measures are analyzed. Human body induced current and internal electric field strength within the electric field are calculated by building model. The results show that when power frequency electric field strength of HV AC transmission line is 4×10^3 V/m, the total induced current through human feet is 60 μA, which is far lower than the human body damage current about 6-9×10^3 μA, and the feelings of stabbing pain ＆ comfortlessness wouldn＇t come out. The human body internal electric field strength is 0.176×10^-3 V/m, which is much lower than the applied one 4×10^3 V/m, and the internal electric filcd is very feeble to applied electric field.