摘要
传统电压传感器在过电压在线监测系统的应用上存在一定局限性,针对这一问题,文章提出了一种非接触式电压传感器,它基于静电感应原理,在电力传输线下方铺设导线感应出电压信号,再通过电压转换矩阵推算出系统电压值。根据电磁暂态仿真软件EMTP进行稳态和暂态过程的仿真结果,从非接触式电压传感器处获取电压信号是可行的。工频实验和雷电冲击电压实验结果表明,非接触式电压传感器工作状态稳定,可以捕捉过电压中的高频信号,能对系统电压实现精确测量。
There are some limits in the traditional voltage sensor which used in the over-voltage on-line monitoring system . Aim at solving these problems, this paper propounds a new type non-contact voltage sensor which is based on the static induction principle. Induction lines that are laid under the aerial conductor are used for getting induction voltage signal, and then we could calculate the system voltage through voltage transformation matrix. The result of EMTP Simulation and experiment shows non-contact voltage sensor is feasible. It works stably and can catch over-voltage signal accurately.
出处
《上海电力》
2008年第4期370-373,共4页
Shanghai Electric Power
基金
武汉大学优秀博士论文培育基金资助
