摘要
车辆停靠在高压输电线路下方时,由于静电感应会产生一定的感应电压,当人触摸该带电体时,由此产生的接触电流对人体具有电击效应。为此,首先利用有限元法计算了输电线路下人体和停靠车辆的感应电压,并在此基础上,引入基于网格分割法的人体模型分析了这种电击效应。计算结果表明,环境场强选定为5kV/m时,其放电能量为0.549mJ,根据ICNIRP设定的参考标准,不会超过人体的疼痛阈值。最后利用理论分析的方法求解其暂态放电能量,当环境场强选定为5kV/m时,其放电能量为0.512mJ,与仿真计算求解结果的误差≤8%,证明了引入基于网格分割法的人体模型进行电击效应分析的有效性。
There is induced voltage on cars parked under high-voltage transmission lines caused by electrostatic induction. People who touched these cars would be shocked by the current as the consequence of potentials difference. Since this effect may affect human health, we calculated induced voltage including car and human body under high-vohage AC transmission lines, and then simulated the electric shock effect by introducing a human model based on mesh segmentation method （MSM）. The results show that, with a given environmental electric field intensity of 5 kV/m, the discharge energy is 0. 549 mJ, which is under the human body painful threshold proposed by the International Commission on Non-ionizing Protection （ICNIRP）. The results are also compared with a theoretic analysis, in which with the same environmental electric field intensity, the discharge energy is 0. 512 mJ, i.e. the difference is within 8%. Thus, the effectiveness of the proposed method of using the human body model based on MSM to simulate electric shocks on human body can be verified.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第12期2876-2881,共6页
High Voltage Engineering
基金
国家自然科学基金(51007055)
上海市教育委员会科研创新项目(12YZ141)
上海高校选拔优秀青年教师科研专项基金(sdl10012
sdl11013)~~
关键词
网格分割法
人体模型
高压交流输电线路
电击效应
暂态电击
稳态电击
放电能量
放电电流
mesh segmentation method
human body model
high voltage AC transmission lines
electric shock effect
transient electric shock
static electric shock
discharge energy
discharge current
